got my 1st DIY kit and managed to finish successfully, with the help of my mentor Jazzy. Thanks bro and when is our next trip to Jalan Pasar for my next lesson?? 
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My first kit built....:P, Simple 9v regulator
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 Aug 30 2007, 08:04 PM, updated 19y ago
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#1
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Senior Member
727 posts Joined: Sep 2006 
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Yahoo
got my 1st DIY kit and managed to finish successfully, with the help of my mentor Jazzy. Thanks bro and when is our next trip to Jalan Pasar for my next lesson?? Attached thumbnail(s)
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Aug 30 2007, 08:08 PM
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#2
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Senior Member
1,526 posts Joined: Jan 2003 From: Seremban
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What does the thing do,care to explain?
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Aug 30 2007, 08:12 PM
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#3
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727 posts Joined: Sep 2006
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Lol oops sorry, it is a 9v volatage regulater which can be used as a power supply for amp. I also learned how to solder and stuffs from*TangentSoft* damm useful site:http://www.tangentsoft.net/audio/
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Aug 30 2007, 11:39 PM
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#4
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Senior Member
2,753 posts Joined: Jul 2006 From: Metropolitan College(KL) or JB Johor Bahru 
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good job dude, nx target? ppav2?
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Aug 30 2007, 11:56 PM
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#5
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4,234 posts Joined: Nov 2004
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MadZiZ, i suggest you start working with perfboards. They are good practises.
 Jumping into PCB too early will only make you learn alot less than you should. |
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Aug 31 2007, 01:26 AM
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#6
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727 posts Joined: Sep 2006
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Yes got myself a per board too so i can try and then if working then will only transfer to real board
PPAV2.....haiya me only beginner ma. Macam perli je? LOL.  Added on August 31, 2007, 1:26 amOops thanks for the advise though Added on August 31, 2007, 1:28 amDouble Oops....i got also good siffoo maa.......wanna make a club la....P.J. Diy Club>>>:P<<LOL (For noobies around here). This post has been edited by MadZiZ: Aug 31 2007, 01:28 AM |
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Aug 31 2007, 02:17 AM
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#7
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Senior Member
3,980 posts Joined: Oct 2005 From: HeAv3N
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good start!!! kampateh...
i will learn some diy also during my holiday... hope i will have that kind of time  mad, how much u get the clip holder? at jln pasar? |
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Aug 31 2007, 02:26 AM
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#8
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2,491 posts Joined: Jun 2006 From: KL
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yeah, i wanna know how much and where did u get that 'third hand tools'
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Aug 31 2007, 03:24 AM
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#9
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Junior Member
37 posts Joined: Mar 2007 From: -`-starPARQ-`- 
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QUOTE(yeahs4.1 @ Aug 31 2007, 02:26 AM) yeah, i wanna know how much and where did u get that 'third hand tools' jln pasar also got.. around rm10-rm30(big size come with 'KANTA')..  last 2 mth... sorry 'kacau' |
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Aug 31 2007, 03:38 AM
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2,491 posts Joined: Jun 2006 From: KL
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QUOTE(cRuSaDeRiDeR @ Aug 31 2007, 03:24 AM) jln pasar also got.. i know pasar road, but which shop?around rm10-rm30(big size come with 'KANTA').. last 2 mth... sorry 'kacau' |
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Aug 31 2007, 08:20 AM
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Senior Member
3,980 posts Joined: Oct 2005 From: HeAv3N
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QUOTE(cRuSaDeRiDeR @ Aug 31 2007, 03:24 AM) jln pasar also got.. yeah, thanks for the quote around rm10-rm30(big size come with 'KANTA').. last 2 mth... sorry 'kacau'  QUOTE(yeahs4.1 @ Aug 31 2007, 03:38 AM) i know pasar road, but which shop? one by one seachinng lo..you also dammn free ma..  |
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Aug 31 2007, 09:30 AM
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Senior Member
3,448 posts Joined: Jan 2003 From: Sarawak
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that thing almost all the shop ada, u just ask for third hand tool or whatsnot..but sumtimes the apek dunno, so what i did was i print out the pic and show it to them..i know, kinda lame of me, haha!
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Aug 31 2007, 11:27 AM
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727 posts Joined: Sep 2006
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Hey guys almost all the shops have one kind or another from the cheapo to more expensive. Price was like RM10 but mine if not mistaken costs RM18. This one is nicer comes with glass magnifier, others come with plastic. DO walk around........
This one i got from shop on main Jln Pasar near the shop that sells the Flukes and hi end name branded equipment |
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Aug 31 2007, 05:12 PM
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2,491 posts Joined: Jun 2006 From: KL
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QUOTE(yeah_guyz @ Aug 31 2007, 08:20 AM) one by one seachinng lo..you also dammn free ma.. QUOTE(ijan @ Aug 31 2007, 09:30 AM) that thing almost all the shop ada, u just ask for third hand tool or whatsnot..but sumtimes the apek dunno, so what i did was i print out the pic and show it to them..i know, kinda lame of me, haha! that's the problem i got last time, asked but they didnt know.. kinda fed up...maybe will do like ijan, lol |
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Aug 31 2007, 08:29 PM
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Senior Member
1,472 posts Joined: Apr 2005 From: SumwHeRe In MaLaYsIa
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uhuhu..remember once helpin ijan buyin da transformer..as me and the shop doesnt exactly know what the specific model ijan want
i take picture..mms to ijan...wait for reply..wrong..choose another one....mms again.ahahha This post has been edited by amirsubhi: Sep 1 2007, 10:17 AM |
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Aug 31 2007, 11:59 PM
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727 posts Joined: Sep 2006
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Haha lol yeah i remember that method, now got master to show me Jln Pasar
It is his backyard and knows where to get cheaper |
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Sep 1 2007, 10:12 AM
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Senior Member
2,475 posts Joined: Nov 2005 From: kopitiam
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ok now, who's jazzy? i wanna learn sumthing too.
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Sep 1 2007, 10:28 AM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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QUOTE(dgrebel @ Sep 1 2007, 10:12 AM) ok now, who's jazzy? i wanna learn sumthing too. Me need a mentor too! I want to make an 18v Regulated PS........  |
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Sep 1 2007, 10:30 AM
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Senior Member
2,475 posts Joined: Nov 2005 From: kopitiam
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QUOTE(March05 @ Sep 1 2007, 10:28 AM) Me need a mentor too! I want to make an 18v Regulated PS........ hye uncle, remember me.. hehehe... |
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Sep 1 2007, 10:40 AM
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2,171 posts Joined: Mar 2005 From: Subang Jaya
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QUOTE(dgrebel @ Sep 1 2007, 10:30 AM) hye uncle, remember me.. hehehe... Sure dude. Your ram still going on strong in my notebook. Shall we try to get this jazzy to give us some lessons at McD's? |
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Sep 1 2007, 10:50 AM
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Senior Member
2,475 posts Joined: Nov 2005 From: kopitiam
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QUOTE(March05 @ Sep 1 2007, 10:40 AM) Sure dude. Your ram still going on strong in my notebook. cool. i hope so. Shall we try to get this jazzy to give us some lessons at McD's? |
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Sep 1 2007, 11:54 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Guys,
I am having problem replying to individual postings... however.. March05: 18V regulated power supply is not a problem as most PSU (Power Supply Unit) kits are easy to assemble. 18V transformer is also available in Jalan Pasar(JP). How much (max) current do you need? Those who wants to be guided (March05 & dgrebel) especially about kit building, sure I can give a pointer or two. And we can do this weekends or even weekday nites if time permits. Just drop a line here or PM me. |
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Sep 1 2007, 12:23 PM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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QUOTE(jazzy939 @ Sep 1 2007, 11:54 AM) March05: 18V regulated power supply is not a problem as most PSU (Power Supply Unit) kits are easy to assemble. 18V transformer is also available in Jalan Pasar(JP). How much (max) current do you need? I need 2 amps max. But I also need it to be powered from a 12 volt Car Battery.....so it's a little bit more complicated. A transformer is out....I want to make it small and as compact as posible. Currently I'm using one of those notebook adapters (with variable output) bought from Pasar Road, but it's like overkill for my purpose. QUOTE(jazzy939 @ Sep 1 2007, 11:54 AM) Those who wants to be guided (March05 & dgrebel) especially about kit building, sure I can give a pointer or two. And we can do this weekends or even weekday nites if time permits. Just drop a line here or PM me. Really appreciate the offer, hope we can get something going.  |
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Sep 1 2007, 01:04 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Since you're using a notebook adaptor for the purpose, why not use those inverters meant for the car? 12 to 230Vac? then plug in your notebook adaptor... make life simpler... The cheapest I saw in JP is RM65. I got mine, small unit plug straight to the car cigarette lighter (120W max) from Bangkok for RM70. Can't find them here though
Otherwise I am thinking of a DC to DC inverter.. 12 to 18 volts.. too much work So far I have MadZiz calling me now and then, you might want to tag a long with him. QUOTE(March05 @ Sep 1 2007, 12:23 PM) I need 2 amps max. But I also need it to be powered from a 12 volt Car Battery.....so it's a little bit more complicated. A transformer is out....I want to make it small and as compact as posible. Currently I'm using one of those notebook adapters (with variable output) bought from Pasar Road, but it's like overkill for my purpose. Really appreciate the offer, hope we can get something going. |
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Sep 1 2007, 02:10 PM
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727 posts Joined: Sep 2006
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Haha see. Now Jazzy no longer my siffoo but everyone's LOL!!!!
 But knowledge is powerful and should be shared |
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Sep 1 2007, 02:21 PM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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QUOTE(jazzy939 @ Sep 1 2007, 01:04 PM) Since you're using a notebook adaptor for the purpose, why not use those inverters meant for the car? 12 to 230Vac? then plug in your notebook adaptor... make life simpler... The cheapest I saw in JP is RM65. I got mine, small unit plug straight to the car cigarette lighter (120W max) from Bangkok for RM70. Can't find them here though Before I continue further, my apologies to MadZiz for hijacking his thread and his siffoo.Otherwise I am thinking of a DC to DC inverter.. 12 to 18 volts.. too much work So far I have MadZiz calling me now and then, you might want to tag a long with him. I already own a 12VDV to 220VAC power inverter (from LYN), a 220VAC to variable 12VDC-24VDC adapter, and also a 12VDC to variable 15VDC-24VDC adapter! (both of the latter from JP) However, I would obviously prefer to have a small single box dedicated 12VDC to 18VDC adapter if possible. For me, it won't be too much work learning to build a 12VDC - 18VDC inverter - the main thing I guess is to get the components, and the circuit diagram, then if you can tell me which side of the soldering iron to hold, I'm all ears to start..... The idea of the DIY is to keep my itchy fingers busy doing something productive. Otherwise they always get into trouble going where they are not supposed to. And of course, to make some new friends like you & MadZiz. Have met plenty of nice people here in LYN so far! BTW jazzy939, don't go out of the way for me, ok? Just mull over it, and if you think it's not worth the effort, it's fine. |
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Sep 1 2007, 02:24 PM
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Senior Member
907 posts Joined: Nov 2005 
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what are u making?
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Sep 1 2007, 02:37 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Eh? So far only you la MadZiz... class now open for registration.. hahaha
MadZiz, remember the 'newbie' headphone amplifier that I mentioned earlier? I calculated the price for parts and stripboard will not exceed Rm10. Casing are extra.. Good for your next 'toy'.. I know you're itching to do more soldering May be the others are interested in this?Also don't forget the additional parts to complete your 9V regulated power supply.Thought you're going to Rising for the additional parts? Did you enjoy reading the link I gave you? Happy soldering QUOTE(MadZiZ @ Sep 1 2007, 02:10 PM) Haha see. Now Jazzy no longer my siffoo but everyone's LOL!!!! But knowledge is powerful and should be shared Added on September 1, 2007, 2:46 pm Okay. Now I have a clearer picture of what you want! Ok you want to learn basic skills of soldering. Nothing to it. Like MadZiz, after a few minutes with the soldering iron, he's doing fine and itching to solder (almost) anything.. hahaha. Sure .. if you wanna join us.. we're having another meet up this afternoon/evening.. you wanna tag along? Give us a holler. I'll search around for a 12VDC to 18 VDC inverter, unless you have one, let me have a look. Everyone is welcome. Like MadZiz said, knowledge is to be shared and I like sharing what I know... QUOTE(March05 @ Sep 1 2007, 02:21 PM) Before I continue further, my apologies to MadZiz for hijacking his thread and his siffoo. I already own a 12VDV to 220VAC power inverter (from LYN), a 220VAC to variable 12VDC-24VDC adapter, and also a 12VDC to variable 15VDC-24VDC adapter! (both of the latter from JP) However, I would obviously prefer to have a small single box dedicated 12VDC to 18VDC adapter if possible. For me, it won't be too much work learning to build a 12VDC - 18VDC inverter - the main thing I guess is to get the components, and the circuit diagram, then if you can tell me which side of the soldering iron to hold, I'm all ears to start..... The idea of the DIY is to keep my itchy fingers busy doing something productive. Otherwise they always get into trouble going where they are not supposed to. And of course, to make some new friends like you & MadZiz. Have met plenty of nice people here in LYN so far! BTW jazzy939, don't go out of the way for me, ok? Just mull over it, and if you think it's not worth the effort, it's fine.Added on September 1, 2007, 3:00 pmNothing specific actually. MadZiz is learning to solder so, first project is a simple 9V regulated power supply.. which will be used for future projects. March05 wants to build a 12Vdc to 18Vdc inverter. I am trying to buildup the cheapest portable headphone amplifier for my 'trainees' to make before they jump to Cmoy or PIMETA (MAdZiz).. QUOTE(defconkiller @ Sep 1 2007, 02:24 PM) what are u making? This post has been edited by jazzy939: Sep 1 2007, 03:01 PM |
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Sep 1 2007, 03:12 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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My unfinished amp.. initially was trying to make a Cmoy.. but.. I found something easier/better..
This was done using a 'doughnut' board. My first attempt.. I don't like it. Prefer stripboards... This post has been edited by jazzy939: Sep 1 2007, 03:16 PM |
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Sep 1 2007, 08:31 PM
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727 posts Joined: Sep 2006
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Good job la siffoo.....hehe cannot wait for kit by you to make simple headphone amp. Guys lets order.....me no.1 on the list:PPP
1. MadZiZ |
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Sep 1 2007, 08:45 PM
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Senior Member
3,448 posts Joined: Jan 2003 From: Sarawak
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the birth of DIY junkies, yeaaaaa! Welcome to the clubzz
 I can get you guys good OPAMPS if you want, gimme sum lead time, i can supply OPA2227 and OPA2132, and also i haf lots of CHEAP spare of JRC opamps, all are dual opamps, so much easier to make CMOY using them. |
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Sep 1 2007, 08:45 PM
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Senior Member
1,599 posts Joined: Jan 2003 From: Isketambola
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QUOTE(jazzy939 @ Sep 1 2007, 03:12 PM) My unfinished amp.. initially was trying to make a Cmoy.. but.. I found something easier/better.. Ehh... doesn't look any different from a CMoy This was done using a 'doughnut' board. My first attempt.. I don't like it. Prefer stripboards... . Non-inverting opamp gain stageGood start, come read up and contribute in DIY Amp Club |
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Sep 1 2007, 08:57 PM
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4,234 posts Joined: Nov 2004
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Jazzy, that's a cmoy
Buttttttttt then almost everything is derived from a cmoy....T_T |
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Sep 1 2007, 08:58 PM
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727 posts Joined: Sep 2006
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Exactly not only me can benefit but on the whole....anyone that is interested to learn DIY the easy and meant way. LOL
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Sep 1 2007, 09:03 PM
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Senior Member
1,069 posts Joined: Jan 2003 From: Batu Berendam, Melaka
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cool DIY...
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Sep 1 2007, 09:04 PM
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727 posts Joined: Sep 2006
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Yeah yeah kits that will be of use for our SOUND ears lol.
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Sep 1 2007, 09:40 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Thank you ijan.. I may take up the offer (opamps that is!)
Right now I am going into discretes... I have this 'thing' about discretes... not that I don't like opamps.. QUOTE(ijan @ Sep 1 2007, 08:45 PM) the birth of DIY junkies, yeaaaaa! Welcome to the clubzz I can get you guys good OPAMPS if you want, gimme sum lead time, i can supply OPA2227 and OPA2132, and also i haf lots of CHEAP spare of JRC opamps, all are dual opamps, so much easier to make CMOY using them. Added on September 1, 2007, 9:44 pmHonestly it WAS a Cmoy! Then like I said... I was short of OPAMPS which JP(Jalan Pasar) did not have.. Still it is working as I dropped in a 'cheapo' opamp ripped from a soundcard. Now I am working on something else... this 'cmoy' is just to break the ice as I stop this DIY thingy for quite sometime.... QUOTE(Eokboy @ Sep 1 2007, 08:45 PM) Ehh... doesn't look any different from a CMoy . Non-inverting opamp gain stageGood start, come read up and contribute in DIY Amp Club Added on September 1, 2007, 9:46 pmYesw, yes! Its a Cmoy alright.. Very true.. cmoy derivatives..most of them anyway! QUOTE(LittleGhost @ Sep 1 2007, 08:57 PM) Jazzy, that's a cmoy This post has been edited by jazzy939: Sep 1 2007, 09:46 PMButtttttttt then almost everything is derived from a cmoy....T_T |
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Sep 1 2007, 09:50 PM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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Actually part of the reason I'm building the inverter is because I want to use it to power the Cmoy which Eokboy built for me. So maybe Eokboy can give some idea of a suitable 18V PS design?
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Sep 1 2007, 09:54 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Ah! Now I see it... but I thought Cmoy is powered by 2 9Vs? for a +9,0,-9 rail?
Eokboy, how? QUOTE(March05 @ Sep 1 2007, 09:50 PM) Actually part of the reason I'm building the inverter is because I want to use it to power the Cmoy which Eokboy built for me. So maybe Eokboy can give some idea of a suitable 18V PS design? |
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Sep 1 2007, 10:12 PM
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Senior Member
3,448 posts Joined: Jan 2003 From: Sarawak
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u can still power it down to 9V, not many opamps require high voltage application. I made once a simple CMOY powered by a car's electrical system, hooked to an iPOD AUX-ed to the stereo, when the engine's running and the alternator kick in, theres a ringing noise due to the electrical system power ripples superceeding the power in the stereo itself.
By using the inverter>dc psu again u would be able to remove this noise, but they are FAR easier methods of doing werk. A tighter regulated psu can supply clean 12V from the car's electrical. 12v runs fine to power ur stock 18V amp, no problem. |
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Sep 1 2007, 10:26 PM
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Senior Member
1,599 posts Joined: Jan 2003 From: Isketambola
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QUOTE(March05 @ Sep 1 2007, 09:50 PM) Actually part of the reason I'm building the inverter is because I want to use it to power the Cmoy which Eokboy built for me. So maybe Eokboy can give some idea of a suitable 18V PS design? Ehh I thought I built you a Class AB...Oops oh right it is another CMoy derivative too Inverter involves PWM circuit and self-wound transformer, I have no idea how to do this .Much easier is car 12V > 7812 regulator circuit. |
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Sep 1 2007, 10:55 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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7812 regulator should be easy enough to do... RM3.52 listed by Farnell.
Some cabling and a cigarette lighter jack.. you're all set March05! How about it? |
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Sep 1 2007, 11:12 PM
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Senior Member
1,599 posts Joined: Jan 2003 From: Isketambola
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QUOTE(jazzy939 @ Sep 1 2007, 10:55 PM) 7812 regulator should be easy enough to do... RM3.52 listed by Farnell. Aiyark RM3.52 dun wan lar Some cabling and a cigarette lighter jack.. you're all set March05! How about it?  . Go the Jalan Pasar Belakang Mati there RM1 only. |
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Sep 1 2007, 11:28 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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ACtually Farnell is closer to where I am staying.
JP may be cheaper but considering the distance(fuel/toll); Farnell would be cheaper choice! Then again.. I had to pass JP when visiting my mom bi-weekly... JP it is QUOTE(Eokboy @ Sep 1 2007, 11:12 PM) Aiyark RM3.52 dun wan lar . Go the Jalan Pasar Belakang Mati there RM1 only. |
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Sep 1 2007, 11:36 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Just finished this yesterday..
A signal injector. Need it to troubleshoot my JAMO SW 400E subwoofer.. got it for a 'steal' from a seller in lelong.com |
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Sep 1 2007, 11:38 PM
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Senior Member
1,599 posts Joined: Jan 2003 From: Isketambola
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QUOTE(jazzy939 @ Sep 1 2007, 11:28 PM) ACtually Farnell is closer to where I am staying. Parts shopping is an important part of DIY. You need to know which stuff you should get from Farnell and other stuff you can save some bucks and get from Pasar.JP may be cheaper but considering the distance(fuel/toll); Farnell would be cheaper choice! Then again.. I had to pass JP when visiting my mom bi-weekly... JP it is |
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Sep 1 2007, 11:43 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Definitely! First I check Farnell, RS components.. then heads to JP
QUOTE(Eokboy @ Sep 1 2007, 11:38 PM) Parts shopping is an important part of DIY. You need to know which stuff you should get from Farnell and other stuff you can save some bucks and get from Pasar. |
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Sep 2 2007, 03:15 AM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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QUOTE(Eokboy @ Sep 1 2007, 10:26 PM) Ehh I thought I built you a Class AB... I have no idea what you built for me...it just sounds great to my ears. Oops oh right it is another CMoy derivative too QUOTE(jazzy939 @ Sep 1 2007, 10:55 PM) 7812 regulator should be easy enough to do... RM3.52 listed by Farnell. Hang on a minute, I'm looking for 18 volts regulated, not 12 volts. Eokboy's CMoy is one of the devices I'm planning to use with the regulator. However, I do have some other stuff which needs an 18 volt supply.Some cabling and a cigarette lighter jack.. you're all set March05! How about it? |
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Sep 2 2007, 03:50 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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If that is the case, looks like you still need a 12 to 18 volts converter...
QUOTE(March05 @ Sep 2 2007, 03:15 AM) I have no idea what you built for me...it just sounds great to my ears. Hang on a minute, I'm looking for 18 volts regulated, not 12 volts. Eokboy's CMoy is one of the devices I'm planning to use with the regulator. However, I do have some other stuff which needs an 18 volt supply. |
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Sep 2 2007, 04:08 AM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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QUOTE(jazzy939 @ Sep 2 2007, 03:50 AM) If that is the case, looks like you still need a 12 to 18 volts converter... Unfortunately....that is so. Back to the drawing board, I guess. |
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Sep 2 2007, 04:34 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Yes.. looks like it aint it?
Whats your 'requirements' for this converter? small, light and cheap.. <-- myguess sorry can't help it.. its 4.30 am QUOTE(March05 @ Sep 2 2007, 04:08 AM) Unfortunately....that is so. Back to the drawing board, I guess. |
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Sep 2 2007, 07:46 AM
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Senior Member
1,599 posts Joined: Jan 2003 From: Isketambola
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QUOTE(March05 @ Sep 2 2007, 04:08 AM) Unfortunately....that is so. Back to the drawing board, I guess. http://sound.westhost.com/project89.htmThis could help, but I recommend you get those cheap 240V car inverters, then build a TREAD for it. |
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Sep 2 2007, 08:18 AM
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Senior Member
3,448 posts Joined: Jan 2003 From: Sarawak
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or you could build buck-boost capacitor dc-dc voltage double..phew...long name! Or get MAXIM voltage doubler.
Eokboy, the amp u built for march, whats the layout about? ar there any regulation or whatsnot in there? Why must it use EXACTLY 18V? |
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Sep 2 2007, 09:23 AM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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QUOTE(jazzy939 @ Sep 2 2007, 04:34 AM) ....small, light and cheap.. Well, not necessarily cheap.......the main criteria is small and light, first and foremost.QUOTE(ijan @ Sep 2 2007, 08:18 AM) Eokboy, the amp u built for march, whats the layout about? ar there any regulation or whatsnot in there? Why must it use EXACTLY 18V? I don't know if Eokboy remembers, but I asked for the 18v because I wanted it to be able to drive my old inefficient pair of cans. It did it pretty well, using 2x9volt batteries. Also, as I mentioned earlier, I have other devices which require an 18v supply, and thus I'm trying to kill multiple birds with one stone.Hmmm...buck-boost capacitor dc-dc voltage double..phew...long name! Or get MAXIM voltage doubler. - ijan, if this can be designed to fit into a matchbox sized casing (ok, even slightly larger than that), it's worth a try. |
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Sep 2 2007, 01:26 PM
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Senior Member
1,599 posts Joined: Jan 2003 From: Isketambola
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QUOTE(ijan @ Sep 2 2007, 08:18 AM) or you could build buck-boost capacitor dc-dc voltage double..phew...long name! Or get MAXIM voltage doubler. Sijosae Class AB with 2 9V. March05 using it for his Yamaha HP-1 orthodynamics Eokboy, the amp u built for march, whats the layout about? ar there any regulation or whatsnot in there? Why must it use EXACTLY 18V?  |
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Sep 2 2007, 01:37 PM
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Senior Member
3,448 posts Joined: Jan 2003 From: Sarawak
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The maxim dc thingie, sure..its phreaking small, SOIC size, no DIP, hehe!
Then eokboy amp can be run off 12V no problem. The matter of inefficiency doesnt rely much on voltage, but more towards current which the buffered ab amp u haf would sufficiently supply. |
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Sep 2 2007, 03:12 PM
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Senior Member
4,234 posts Joined: Nov 2004
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QUOTE(Eokboy @ Sep 2 2007, 01:26 PM) Sijosae Class AB with 2 9V. March05 using it for his Yamaha HP-1 orthodynamics HOLY SHIT EPIC!!This phones is very old and known to be very high end long ago. I know another member here who owns one, but he says headphones are for sissies. (hint: silon) |
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Sep 2 2007, 07:15 PM
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Senior Member
727 posts Joined: Sep 2006
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I have a friend that has one too, but he likes his headphones. Says that it sounds unique. LOL
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Sep 2 2007, 08:42 PM
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Senior Member
1,599 posts Joined: Jan 2003 From: Isketambola
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QUOTE(ijan @ Sep 2 2007, 01:37 PM) The maxim dc thingie, sure..its phreaking small, SOIC size, no DIP, hehe! Yea...I'm not too hot for voltage doublers Then eokboy amp can be run off 12V no problem. The matter of inefficiency doesnt rely much on voltage, but more towards current which the buffered ab amp u haf would sufficiently supply.  |
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Sep 2 2007, 10:19 PM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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So you guys think there's no point in providing an 18VDC supply for the amp? I might as well just run it straight off a small 12v Sealed Lead Acid battery then.
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Sep 3 2007, 09:55 AM
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Senior Member
2,475 posts Joined: Nov 2005 From: kopitiam
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jazzy . pm me yur hp number.
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Sep 3 2007, 12:41 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Yes. I think so too.
QUOTE(March05 @ Sep 2 2007, 10:19 PM) So you guys think there's no point in providing an 18VDC supply for the amp? I might as well just run it straight off a small 12v Sealed Lead Acid battery then. |
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Sep 3 2007, 05:31 PM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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QUOTE(jazzy939 @ Sep 3 2007, 12:41 PM) Yes. I think so too. Oh well, there goes my DIY project.  And for my other 18v requirements, I'll just link 3x6v SLA batteries in series together. Simple old fashioned solution. Looks like I'll only be able to meet up with you and MadZiZ when we get the iBasso D1, eh? |
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Sep 3 2007, 05:39 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Sometimes 'simple old fashioned' solution is the easiest way to go...
Oh ya.. the iBasso... according to yuheng, it may be coming next week! I can't hardly wait!  QUOTE(March05 @ Sep 3 2007, 05:31 PM) Oh well, there goes my DIY project. And for my other 18v requirements, I'll just link 3x6v SLA batteries in series together. Simple old fashioned solution. Looks like I'll only be able to meet up with you and MadZiZ when we get the iBasso D1, eh? Added on September 3, 2007, 10:59 pmMarch05!Isn't this your lucky day.. errr night oledi.. I made calls to my close friend, also an audio/electronic nut, and guess what, he has a few units of.... 12VDC to 18VDC voltage converter! Assembled, ready to go! He made this for some of his projects. Size: Imagine a 16 sticks of Gudang Garam cigarette box... 1/2 that size It's gonna cost u! PM me for price... QUOTE(March05 @ Sep 3 2007, 05:31 PM) Oh well, there goes my DIY project. And for my other 18v requirements, I'll just link 3x6v SLA batteries in series together. Simple old fashioned solution. Looks like I'll only be able to meet up with you and MadZiZ when we get the iBasso D1, eh? Added on September 3, 2007, 11:08 pmdgrebel, your Ipod/Gmod|Vibe|PK1 combination really rocks! I dare not listen to that PK1 for too long.. like I said earlier... poisonous stuffs! Hope to see u again.. Glad to help you out with your project. QUOTE(dgrebel @ Sep 3 2007, 09:55 AM) jazzy . pm me yur hp number. This post has been edited by jazzy939: Sep 3 2007, 11:08 PM |
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Sep 5 2007, 08:38 AM
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Senior Member
2,475 posts Joined: Nov 2005 From: kopitiam
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hey, don't mention it. i should be thanking u anyway. btw, i've changed the whole circuit and atlast get the desired output. alhamdulillah.
later i upload the pspice simulation. actually i just play around with the resistor at base. and it seems like the resistors at emitter plays no role at all. i wonder why? it suppose to equate as a Thevenin equivalant but nothing seems to differ when i plug in/plug it out from the board. neways , nice knowing ya. i'm going to jalan pasar today. getting transformer and maybe if i'm free this weekend, we can meetup for the voltage regulator tutors (sila tunjuk ajar). |
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Sep 5 2007, 09:06 AM
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Senior Member
727 posts Joined: Sep 2006
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Wah wah wah......Jazzy on demand
LOL. Jazzy when free let's meet up again i think i am almost near 1/2 burn time. |
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Sep 5 2007, 11:55 AM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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QUOTE(jazzy939 @ Sep 3 2007, 05:39 PM) March05!Isn't this your lucky day.. errr night oledi........ I feel like I'm going to my DOOM! It's gonna cost u! PM me for price... Okay will pm you now. |
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Sep 5 2007, 12:17 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Hey I am glad that your project did worked out for you. Like I said earlier.. the initial circuit can further be reconfigured for better/optimum space/components position.. what I did that night was really 'rough'
The base resistor actually controls the 'trigger' base voltage.. still I could not understand why the emitter resistor, R8,kan? Plays no role there.. it's the 'load' for that Q2 transistor. I want to have a look at the circuit again.. may be I missed out something... sudah 'karat' la lama tak buat macam nie.. Surething! Would love to meet up with u and the others (MadZiZ only) for more 'discussion'.. Enjoy your JP shopping! QUOTE(dgrebel @ Sep 5 2007, 08:38 AM) hey, don't mention it. i should be thanking u anyway. btw, i've changed the whole circuit and atlast get the desired output. alhamdulillah. later i upload the pspice simulation. actually i just play around with the resistor at base. and it seems like the resistors at emitter plays no role at all. i wonder why? it suppose to equate as a Thevenin equivalant but nothing seems to differ when i plug in/plug it out from the board. neways , nice knowing ya. i'm going to jalan pasar today. getting transformer and maybe if i'm free this weekend, we can meetup for the voltage regulator tutors (sila tunjuk ajar). Added on September 5, 2007, 12:21 pmNO lah.. only my help needed..Glad to help out someone in need.... This morning first thing I did was to check out on the 'lady'... Definitely sounded better than last night after a 5 hours burn in period.. Took it to the office for further burn in.. should be in position to 'perform ' tonite!  QUOTE(MadZiZ @ Sep 5 2007, 09:06 AM) Wah wah wah......Jazzy on demand This post has been edited by jazzy939: Sep 5 2007, 12:23 PM LOL. Jazzy when free let's meet up again i think i am almost near 1/2 burn time. |
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Sep 5 2007, 03:26 PM
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Senior Member
2,475 posts Joined: Nov 2005 From: kopitiam
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anyway luckily my lab instructor didnt check the VBE or base voltage. coz it's roughly around 0.58V for first stage and 0.705V for second stage amplification. LOL. one is low the other is too high. i still not satisfied of why i get like dat. if only i can buy myself a function generator , oscilloscope and a dual voltage DC source. sheeesh alakazaaammmm...KAPOOF, may money grow on trees!!!!
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Sep 5 2007, 03:43 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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I m baffled too la. We have to look at it again.
Actually you can build a function generator (DIY).. oscilloscope, there is a freeware program that used your soundcard for input.. dual voltage DC source.. well this one also can DIY mah! PS.. Tell me where this money tree is growing k... QUOTE(dgrebel @ Sep 5 2007, 03:26 PM) anyway luckily my lab instructor didnt check the VBE or base voltage. coz it's roughly around 0.58V for first stage and 0.705V for second stage amplification. LOL. one is low the other is too high. i still not satisfied of why i get like dat. if only i can buy myself a function generator , oscilloscope and a dual voltage DC source. sheeesh alakazaaammmm...KAPOOF, may money grow on trees!!!! |
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Sep 5 2007, 03:56 PM
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Senior Member
2,475 posts Joined: Nov 2005 From: kopitiam
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QUOTE(jazzy939 @ Sep 5 2007, 03:43 PM) I m baffled too la. We have to look at it again. pergh i really like DIY sifoo like u. everything can DIY. later i want u to DIY me a wife can ah? hahaha.. just kidding.Actually you can build a function generator (DIY).. oscilloscope, there is a freeware program that used your soundcard for input.. dual voltage DC source.. well this one also can DIY mah! PS.. Tell me where this money tree is growing k... really want to meet u again for your deep knowledge. but now i must struggle for exams first. number 1 priority. will contact u when im free. btw, may i know where u download the simulator that u told me before? |
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Sep 5 2007, 04:32 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Yes.. exam is above everything. Make sure you work hard, make that very very hard to pass your exam k. Good luck and all the best!
I have to go home and check. I'll email you the s/ware. Its not that huge. Be good! QUOTE(dgrebel @ Sep 5 2007, 03:56 PM) pergh i really like DIY sifoo like u. everything can DIY. later i want u to DIY me a wife can ah? hahaha.. just kidding. really want to meet u again for your deep knowledge. but now i must struggle for exams first. number 1 priority. will contact u when im free. btw, may i know where u download the simulator that u told me before? |
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Sep 5 2007, 06:21 PM
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Senior Member
2,475 posts Joined: Nov 2005 From: kopitiam
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QUOTE(jazzy939 @ Sep 5 2007, 04:32 PM) Yes.. exam is above everything. Make sure you work hard, make that very very hard to pass your exam k. Good luck and all the best! oh just in case. ahmadsyafeeq@gmail.com.I have to go home and check. I'll email you the s/ware. Its not that huge. Be good! |
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Sep 5 2007, 07:23 PM
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Senior Member
727 posts Joined: Sep 2006
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Oooh Jazzy our project work??? Jazzy the siffoo in demand:P
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Sep 5 2007, 07:33 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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MadZiZ, the project is on.. hopefully will complete prototype this weekend. Too much distractions already
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Sep 5 2007, 07:52 PM
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Senior Member
727 posts Joined: Sep 2006
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Aiks my siffoo is online? Ahaks ok set this weekend will try and clear some of my scheduled meetings then. Got to find time for the boss
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Sep 6 2007, 08:11 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Yes.. we better. Now we got a new toy to play.. a tubey in the family
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Sep 6 2007, 09:51 AM
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Senior Member
941 posts Joined: Nov 2005
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For the voltage converter IC, i found a replacement for MAXIM chip at Jln Pasar the code is ICL7660 if not mistaken. The drawback of the IC is the output current is low.
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Sep 6 2007, 10:38 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Its a pretty good voltage inverter or doubler. Yup, like you said, the current handling is kind of low.. infact too low ler... thanx for the input! You have any interesting projects to share?
This post has been edited by jazzy939: Sep 6 2007, 10:38 AM |
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Sep 6 2007, 11:23 AM
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Senior Member
2,475 posts Joined: Nov 2005 From: kopitiam
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sifoos. wanna join me for robotics projects? www.cytron.com.my
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Sep 6 2007, 11:39 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Sorry bro.. now obsessed with audio stuffs
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Sep 6 2007, 02:16 PM
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Senior Member
941 posts Joined: Nov 2005
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now working on a CMOY. i got a amp kit based on TDA2005 which i bought years ago, i disable the preamp IC, running line signal straight to the poweramp IC. now thinking of building a preamp circuit for it.
anyone got any suggestion? |
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Sep 6 2007, 02:50 PM
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Senior Member
727 posts Joined: Sep 2006
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Nice work wui23. You should hook up with Jazzy and share ideas. I wanna join too if got session
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Sep 6 2007, 03:30 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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TDA2005! 20Watts bridge amp for car radio...
Yours is the M(bridge) or S(stereo) version? If you disabled the preamp IC, can you not enable it back again? There's many preamp circuits available... its your choice between complexity and cost$ Cmoy can be used as a 'preamp'.. QUOTE(wui223 @ Sep 6 2007, 02:16 PM) now working on a CMOY. i got a amp kit based on TDA2005 which i bought years ago, i disable the preamp IC, running line signal straight to the poweramp IC. now thinking of building a preamp circuit for it. anyone got any suggestion? |
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Sep 6 2007, 03:45 PM
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Senior Member
2,475 posts Joined: Nov 2005 From: kopitiam
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do we need a pre amp? coz it's like so yesterday. nowadays got many good op-amps already to make a bloody good amp.
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Sep 6 2007, 05:58 PM
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Senior Member
727 posts Joined: Sep 2006
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Aiyoo if preamp what for? Since now you can get power amp straight. Hmm hehe actually i dun know what i am talking abt....or do i??? LOL
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Sep 6 2007, 06:08 PM
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Senior Member
941 posts Joined: Nov 2005
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jazzy939: i think is the bridge version, the preamp IC in the kit is AN6551. right now i bypass the signal to the poweramp IC.
i am thinking of using CMOY as preamp, maybe add a diamond buffer at output. no money to buy buffer IC like: BUF634. |
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Sep 7 2007, 02:45 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Just curious,
What are you using your amp for? What will be the inputs/sources driving your power amp. These may have bearing on your pre-amp configuration/design. Still, how did you disable that AN6551? That AN6551 makes a great preamp... QUOTE(wui223 @ Sep 6 2007, 06:08 PM) jazzy939: i think is the bridge version, the preamp IC in the kit is AN6551. right now i bypass the signal to the poweramp IC. This post has been edited by jazzy939: Sep 7 2007, 11:24 AMi am thinking of using CMOY as preamp, maybe add a diamond buffer at output. no money to buy buffer IC like: BUF634. |
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Sep 7 2007, 12:50 PM
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Senior Member
727 posts Joined: Sep 2006
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Haha Jazzy getting too technical for me la. HELP!
LOL!!!! |
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Sep 7 2007, 12:56 PM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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QUOTE(MadZiZ @ Sep 7 2007, 12:50 PM) Haha Jazzy getting too technical for me la. HELP! Yalah, I'm just reading these posts with a dropped jaw....huh? huh? huh? LOL!!!! |
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Sep 7 2007, 01:00 PM
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Senior Member
727 posts Joined: Sep 2006
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Lol bro March05 i agree with you.......i was lost somewhere in page 2 to 3 Hahaha.
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Sep 7 2007, 03:00 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Aik? Whats in page 2-3?
Bro March05, my fren have not reverted with regards to your DC to DC converter.. will see him tomorrow nite anyway, hope you can wait for a 'lil bit longer Sorry guys the conversation can be technical at times.. MadZiZ, what do you want to solder next? You still need to complete your 9V regulator.. 2 diodes and a capacitor to go! This post has been edited by jazzy939: Sep 7 2007, 03:03 PM |
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Sep 7 2007, 05:08 PM
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Senior Member
727 posts Joined: Sep 2006
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Haha now gila beli'ing so project stopped for awhile. Now wait if i get the price i want for the M50 LOL~~~
Bargaining on the price now. |
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Sep 7 2007, 05:49 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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M50? Whoa.. count me in!!
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Sep 7 2007, 05:59 PM
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Senior Member
1,098 posts Joined: Oct 2004
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If you guys are talking about electronics, this is mine
 But, never built an amplifier for audio before  |
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Sep 7 2007, 06:12 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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You're in PIC huh? Serious stuffs!
No difference if you're building an amplifier.. it's the 'same' Care to explain what was that or what does it do? TQ> |
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Sep 7 2007, 06:21 PM
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Senior Member
3,980 posts Joined: Oct 2005 From: HeAv3N
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QUOTE(March05 @ Sep 7 2007, 12:56 PM) Yalah, I'm just reading these posts with a dropped jaw....huh? huh? huh? helloUncle March,how are you the bi-amp serve you nice? |
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Sep 7 2007, 06:36 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Uncle March?
 errr should I call you uncle also ah? LOL just jokin' QUOTE(yeah_guyz @ Sep 7 2007, 06:21 PM) hello This post has been edited by jazzy939: Sep 7 2007, 06:37 PMUncle March,how are you the bi-amp serve you nice? |
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Sep 7 2007, 06:45 PM
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Senior Member
3,980 posts Joined: Oct 2005 From: HeAv3N
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QUOTE(jazzy939 @ Sep 7 2007, 06:36 PM) Uncle March? nope i still young la,22 nia errr should I call you uncle also ah? LOL just jokin' Uncle March05 can be my Dad d, hence i call him UNCLE instead of BRO Uncle March05 - amiable Uncle  This post has been edited by yeah_guyz: Sep 7 2007, 06:46 PM |
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Sep 7 2007, 07:01 PM
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Senior Member
941 posts Joined: Nov 2005
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jazzy939: i use a china brand vdc player as source and driving a pair of speakers. i simply connect the line signal input to the power amp, so the signal didnt go thru the preamp IC.
Is AN6551 a good preamp IC? i dun realize that. |
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Sep 7 2007, 09:42 PM
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Senior Member
1,472 posts Joined: Apr 2005 From: SumwHeRe In MaLaYsIa
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pic..i hate programming language........still remember my "urgh" time during atmel 8051 project assignment
[now currently bz reading CANSAT as my university gonna to have a competition on it] This post has been edited by amirsubhi: Sep 7 2007, 09:43 PM |
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Sep 7 2007, 10:07 PM
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Senior Member
3,448 posts Joined: Jan 2003 From: Sarawak
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i dig my 8085 and 8051 man, scored straight A+ with appreciation from lecturer
that and digital.(but i did kinda did badly on DSP and Control System...) |
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Sep 7 2007, 10:34 PM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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QUOTE(yeah_guyz @ Sep 7 2007, 06:21 PM) the bi-amp serve you nice? Well, I was trying to enrol in jazzy's DIY kindergarten here so that I could eventually learn to bi amp with those two darn sweet sounding tripath amps I bought from you.....but I think it's totally out of my league at the moment...... QUOTE(jazzy939 @ Sep 7 2007, 06:36 PM) Uncle March? Didn't you notice dgrebel already called me uncle in the first page? You can call me anything as long as you let me call you siffoo. errr should I call you uncle also ah?Maybe Baby March ok 'cause that's what I am when it come to DIYing electronic stuff! |
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Sep 7 2007, 11:24 PM
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Senior Member
1,098 posts Joined: Oct 2004
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QUOTE(jazzy939 @ Sep 7 2007, 06:12 PM) You're in PIC huh? Serious stuffs! Some sort of application board with rs232 connectors and a small power monitoring. The smd chip there is a current sensor No difference if you're building an amplifier.. it's the 'same' Care to explain what was that or what does it do? TQ> |
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Sep 8 2007, 12:07 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Ok. but why you need a preamp now?
hey that AN6551 can double as an active filter too!... QUOTE(wui223 @ Sep 7 2007, 07:01 PM) jazzy939: i use a china brand vdc player as source and driving a pair of speakers. i simply connect the line signal input to the power amp, so the signal didnt go thru the preamp IC. Is AN6551 a good preamp IC? i dun realize that. |
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Sep 8 2007, 12:15 AM
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Senior Member
727 posts Joined: Sep 2006
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All these tech talk.....can i ask you guys to talk more in lay men's term
Half the time me dun even understand. Jazzy when our next class?? Me need more knowledge:) |
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Sep 8 2007, 12:31 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Tomorrow got JP session.. will get the balance of your components.. the diodes and caps that you require to proceed. Then some soldering for you to do during the weekend!
I'm getting some components for my phono preamp.. urgent becoz wanna connect my TT to the LD2+.. oh that warm flow of sweet sweet music... what a bliss  QUOTE(MadZiZ @ Sep 8 2007, 12:15 AM) All these tech talk.....can i ask you guys to talk more in lay men's term Half the time me dun even understand. Jazzy when our next class?? Me need more knowledge:)Added on September 8, 2007, 12:34 ammarch05, TT session for the Kelab DIY? Bila boleh free? MadZiZ surely will be there.. he's the class monitor QUOTE(March05 @ Sep 7 2007, 10:34 PM) Well, I was trying to enrol in jazzy's DIY kindergarten here so that I could eventually learn to bi amp with those two darn sweet sounding tripath amps I bought from you.....but I think it's totally out of my league at the moment...... This post has been edited by jazzy939: Sep 8 2007, 12:34 AM Didn't you notice dgrebel already called me uncle in the first page? You can call me anything as long as you let me call you siffoo. Maybe Baby March ok 'cause that's what I am when it come to DIYing electronic stuff! |
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Sep 8 2007, 12:35 AM
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Senior Member
727 posts Joined: Sep 2006
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Waah waah always talking abt the warm glow
Hmm just you wait till i get one too. HEhe then i can join your club |
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Sep 8 2007, 12:47 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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How many club we have already ah? Kelab DIY and WGC? (Warm Glow Club)
QUOTE(MadZiZ @ Sep 8 2007, 12:35 AM) Waah waah always talking abt the warm glow Hmm just you wait till i get one too. HEhe then i can join your club |
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Sep 8 2007, 12:50 AM
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Senior Member
727 posts Joined: Sep 2006
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Hehe wait la....soon i hope to join your WG Club.
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Sep 8 2007, 12:53 AM
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Senior Member
3,980 posts Joined: Oct 2005 From: HeAv3N
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QUOTE(March05 @ Sep 7 2007, 10:34 PM) Well, I was trying to enrol in jazzy's DIY kindergarten here so that I could eventually learn to bi amp with those two darn sweet sounding tripath amps I bought from you.....but I think it's totally out of my league at the moment...... i still waiting a proper review of Tamp Didn't you notice dgrebel already called me uncle in the first page? You can call me anything as long as you let me call you siffoo. Maybe Baby March ok 'cause that's what I am when it come to DIYing electronic stuff! but sadly i cant find it, i am thinkin to get myself a home rig |
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Sep 8 2007, 12:56 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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I think you better! Who else but you..
(poison sudah masuk...) QUOTE(yeah_guyz @ Sep 8 2007, 12:53 AM) i still waiting a proper review of Tamp but sadly i cant find it, i am thinkin to get myself a home rig |
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Sep 8 2007, 01:01 AM
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Senior Member
727 posts Joined: Sep 2006
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So Jazzy how is your new amp???? Do tell....
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Sep 8 2007, 01:13 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Which new amp?
Need to burn in further.. esp. the new/latest addition to the family, LDM+ Its a 'lil tighter and precise than the PA2V2.. Matching can be critical as my Sony EX51.. is a NO-NO with LDM+.. it became 'dark'.... More time needed to burn in.. stay tune! BTW, I have removed the clip, put the KOSS in my Senn HD201 enclosure and voila! an enclosed KOSS KSC75! Damn! I will definitely not sleep tonite.. heck! Its mornin' oledi... QUOTE(MadZiZ @ Sep 8 2007, 01:01 AM) So Jazzy how is your new amp???? Do tell.... This post has been edited by jazzy939: Sep 8 2007, 01:20 AM |
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Sep 8 2007, 01:22 AM
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Senior Member
727 posts Joined: Sep 2006
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Aiyooo hmmm come come help me MOD mine please. LOL
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Sep 8 2007, 01:41 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Errr where/how ler? Got 'spare' Senn?
QUOTE(MadZiZ @ Sep 8 2007, 01:22 AM) Aiyooo hmmm come come help me MOD mine please. LOL |
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Sep 8 2007, 02:00 AM
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Senior Member
727 posts Joined: Sep 2006
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Hehe i can go hunting for it LOL!!! Cannot use any headphone isit? Must be only Senn??? Must find cheap2 ones la.
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Sep 8 2007, 02:03 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Actually as long as it fits the KOSS, shud work! Philips units will be better!
QUOTE(MadZiZ @ Sep 8 2007, 02:00 AM) Hehe i can go hunting for it LOL!!! Cannot use any headphone isit? Must be only Senn??? Must find cheap2 ones la. |
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Sep 8 2007, 02:06 AM
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Senior Member
727 posts Joined: Sep 2006
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Haha ok now me go pancing for one. Wish me luck LOL
Still not sleeping? Me burning my Koss....using all kinds of noises....white, pink....until i donno LOL! |
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Sep 8 2007, 02:25 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Hard to remove this KOSS ler...now even harder coz connected to LDM+
Audio nirvana.. cannot leave so soon mah... QUOTE(MadZiZ @ Sep 8 2007, 02:06 AM) Haha ok now me go pancing for one. Wish me luck LOL Still not sleeping? Me burning my Koss....using all kinds of noises....white, pink....until i donno LOL! |
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Sep 8 2007, 02:44 AM
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Senior Member
3,980 posts Joined: Oct 2005 From: HeAv3N
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 thinking of getting Mini3 pcb board part list http://www.amb.org/audio/mini3/ how much will it cost to build this amp? |
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Sep 8 2007, 02:48 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Quality parts.. rough estimates minus the box cud be around Rm100 plus minus few dollars. u wanna build this? why the mini3?
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Sep 8 2007, 03:02 AM
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Senior Member
3,980 posts Joined: Oct 2005 From: HeAv3N
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QUOTE(jazzy939 @ Sep 8 2007, 02:48 AM) Quality parts.. rough estimates minus the box cud be around Rm100 plus minus few dollars. u wanna build this? why the mini3? quite nice review |
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Sep 8 2007, 04:42 AM
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Senior Member
941 posts Joined: Nov 2005
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i am taking Control System this sem, so far so good. well i am mechanical eng student, thinking of using DSP in my final year project.
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Sep 8 2007, 09:35 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Ok.. now I know whats in your 'mind'
So.. where do 'we' go from here? ie your preamp thingy? Its a personal project,yes? |
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Sep 8 2007, 10:22 AM
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Senior Member
941 posts Joined: Nov 2005
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jazzy939: can help me ask for the price of following items when u visit JP?
IRF513, IRF510, IRF610, NJM4556, BC337, BC327, TLE2426 thanks in advance. if u happen to have gathering at The Mines, pls let me know coz i live nearby only. i know PcWork also but i am not poisoned to headphone coz lack of budget. |
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Sep 8 2007, 11:48 AM
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Senior Member
3,448 posts Joined: Jan 2003 From: Sarawak
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mini cube is a 3 channel cmoy with built in regulator+battery charger..cool!
Anyone wanna build almost anything..i think i haf parts enough to make them, so just drop me a PM. |
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Sep 8 2007, 01:15 PM
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Senior Member
941 posts Joined: Nov 2005
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yeah_guyz: how much is the board for Mini3 include shipping?
maybe we can side order some components from the site also |
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Sep 8 2007, 02:12 PM
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Senior Member
727 posts Joined: Sep 2006
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I want discrete amp....wait i also want tubie amp.....aaarrrrggghhh so many wants, i am going crazy!!!!!
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Sep 8 2007, 07:22 PM
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Senior Member
3,980 posts Joined: Oct 2005 From: HeAv3N
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QUOTE(wui223 @ Sep 8 2007, 01:15 PM) yeah_guyz: how much is the board for Mini3 include shipping? the pcb board selling 10USD at http://www.amb.orgmaybe we can side order some components from the site also postage using Priority Mail http://pe.usps.gov/cpim/ftp/pubs/pub51/pub51.pdf 1st pound 18.50usd 2pound 22.70pound if buy in bulk then will be much cheaper |
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Sep 8 2007, 08:35 PM
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Senior Member
2,475 posts Joined: Nov 2005 From: kopitiam
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hye guys. kalau nak TT electronics bleh. tunggu 22nd september when i get my fluke 189. hehehe.. i'll bring my protoboard and stuffs.
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Sep 8 2007, 08:39 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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I'll make a note! FLUKE eh?
QUOTE(dgrebel @ Sep 8 2007, 08:35 PM) hye guys. kalau nak TT electronics bleh. tunggu 22nd september when i get my fluke 189. hehehe.. i'll bring my protoboard and stuffs. Added on September 8, 2007, 8:40 pmA suggestion. Why don't you bulk this in [bulk] section? QUOTE(yeah_guyz @ Sep 8 2007, 07:22 PM) the pcb board selling 10USD at http://www.amb.org postage using Priority Mail http://pe.usps.gov/cpim/ftp/pubs/pub51/pub51.pdf 1st pound 18.50usd 2pound 22.70pound if buy in bulk then will be much cheaper Added on September 8, 2007, 8:44 pmwui, I only read this after my JP trip ler.. however looking at the items, these are cheap stuffs from sens to few ringgits only. The Mines TT session probably tomorrow nite... watch this thread! QUOTE(wui223 @ Sep 8 2007, 10:22 AM) jazzy939: can help me ask for the price of following items when u visit JP? This post has been edited by jazzy939: Sep 8 2007, 08:44 PMIRF513, IRF510, IRF610, NJM4556, BC337, BC327, TLE2426 thanks in advance. if u happen to have gathering at The Mines, pls let me know coz i live nearby only. i know PcWork also but i am not poisoned to headphone coz lack of budget. |
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Sep 8 2007, 08:54 PM
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Senior Member
3,980 posts Joined: Oct 2005 From: HeAv3N
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QUOTE(jazzy939 @ Sep 8 2007, 08:39 PM) I'll make a note! FLUKE eh? wonder got people want buy onot Added on September 8, 2007, 8:40 pmA suggestion. Why don't you bulk this in [bulk] section? lao..todays i pokkai d after came back from pasar road spend RM150 for cable, plug, heatshink tube(too sad they dont have white colour) |
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Sep 8 2007, 09:13 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Yes, its kinda hard to know, why don't u ask around.. who wants just PM you or something? Just an idea...
I went there(JP) in the morning. Bought just few stuffs to complement current projects. Yes, the heatshrink tube/sleeve don't have in white. Too bad huh? *still burn in the LDM+ and KSC75 QUOTE(yeah_guyz @ Sep 8 2007, 08:54 PM) wonder got people want buy onot This post has been edited by jazzy939: Sep 8 2007, 09:14 PMlao..todays i pokkai d after came back from pasar road spend RM150 for cable, plug, heatshink tube(too sad they dont have white colour) |
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Sep 8 2007, 11:43 PM
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Senior Member
727 posts Joined: Sep 2006
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Burn babe burn......i burning my mylar EB now. Bose i think already enough hehe.
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Sep 8 2007, 11:45 PM
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Senior Member
2,475 posts Joined: Nov 2005 From: kopitiam
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QUOTE(MadZiZ @ Sep 8 2007, 11:43 PM) Burn babe burn......i burning my mylar EB now. Bose i think already enough hehe. wait till u audition my yuin pk1 and the gmod.  next, u won't downgrade it for the cheap looks. |
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Sep 8 2007, 11:49 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Uik? mylar baru nak burn in?
QUOTE(MadZiZ @ Sep 8 2007, 11:43 PM) Burn babe burn......i burning my mylar EB now. Bose i think already enough hehe. Added on September 8, 2007, 11:52 pmdgrebel, we know.. well, I know how great the Yuins and the GMOD iPod, not to mention the Go Vibe 6.. too bad coz I dah sumpah don't want to hear the Yuins again! too poisonous!! QUOTE(dgrebel @ Sep 8 2007, 11:45 PM) wait till u audition my yuin pk1 and the gmod. This post has been edited by jazzy939: Sep 8 2007, 11:52 PM next, u won't downgrade it for the cheap looks. |
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Sep 9 2007, 12:18 AM
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Senior Member
727 posts Joined: Sep 2006
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Yuin hmm what can i say.....nice phone but something not for me:) So affraid today work, tommorrow kaput lol.....j/k (looks so ordinary la).
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Sep 9 2007, 12:25 AM
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Senior Member
2,491 posts Joined: Jun 2006 From: KL
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QUOTE(yeah_guyz @ Sep 8 2007, 08:54 PM) wonder got people want buy onot lao.. i spent rm250++ also not complaining yet.. lao..todays i pokkai d after came back from pasar road spend RM150 for cable, plug, heatshink tube(too sad they dont have white colour) p/s : just made a mini-rca, gonna post some pics up This post has been edited by yeahs4.1: Sep 9 2007, 12:26 AM |
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Sep 9 2007, 12:26 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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MadZiZ,
I've got the 2 diodes and the capacitor for your 9V regulator.. errr masih berminat ka mau solder.. |
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Sep 9 2007, 03:36 AM
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Senior Member
3,980 posts Joined: Oct 2005 From: HeAv3N
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QUOTE(dgrebel @ Sep 8 2007, 11:45 PM) wait till u audition my yuin pk1 and the gmod. hehe, awaiting to that next, u won't downgrade it for the cheap looks. QUOTE(yeahs4.1 @ Sep 9 2007, 12:25 AM) lao.. i spent rm250++ also not complaining yet.. LAo....rich fellow cant compare with poor peoplep/s : just made a mini-rca, gonna post some pics up Jazzy&Madziz is time for you both to test Im716 before Yuin |
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Sep 9 2007, 10:09 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Okie dokie,
I can't wait! I'll consumed some 'anti-venom' before I audition the IM716.. as I mentioned earlier... prevention is DEFINITELY better than cure... LOL Anyway.. I don't think me and MadZiz can be further poisoned... we have set our mind to the M50.. QUOTE(yeah_guyz @ Sep 9 2007, 03:36 AM) Jazzy&Madziz is time for you both to test Im716 before Yuin |
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Sep 9 2007, 11:44 AM
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Senior Member
727 posts Joined: Sep 2006
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Aiyooo IM716 and Yuin???? Sorry la not sold to that idea, yes as Jazzy said we are both fully taken by M50.
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Sep 9 2007, 01:43 PM
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Senior Member
1,098 posts Joined: Oct 2004
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QUOTE(yeah_guyz @ Sep 8 2007, 07:22 PM) the pcb board selling 10USD at http://www.amb.org Y dont just design ur own board and etch it urself?postage using Priority Mail http://pe.usps.gov/cpim/ftp/pubs/pub51/pub51.pdf 1st pound 18.50usd 2pound 22.70pound if buy in bulk then will be much cheaper This post has been edited by neoxz: Sep 9 2007, 01:44 PM |
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Sep 9 2007, 06:33 PM
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Senior Member
3,980 posts Joined: Oct 2005 From: HeAv3N
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QUOTE(neoxz @ Sep 9 2007, 01:43 PM) Y dont just design ur own board and etch it urself? u mean make myself a pcb board?i am not expert in electronic |
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Sep 9 2007, 09:40 PM
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Senior Member
982 posts Joined: May 2005
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guys, any recommendations of part for the power section of the cmoy?I want to use it with wall power supply when im using it at home and battery when im goin out. any websites you can recommend?
ohya, mana cari OPAs ? i cant find them in Pasar road This post has been edited by syyang85: Sep 9 2007, 09:40 PM |
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Sep 9 2007, 10:25 PM
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Senior Member
4,234 posts Joined: Nov 2004
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QUOTE(yeah_guyz @ Sep 9 2007, 06:33 PM) u mean make myself a pcb board? do a bulk LOL.i am not expert in electronic PCB + included battery holder, ferrite beads, and the opamps will do Profit for everyone. |
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Sep 9 2007, 10:45 PM
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Senior Member
3,980 posts Joined: Oct 2005 From: HeAv3N
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QUOTE(syyang85 @ Sep 9 2007, 09:40 PM) guys, any recommendations of part for the power section of the cmoy?I want to use it with wall power supply when im using it at home and battery when im goin out. any websites you can recommend? OPAs refer to opamp? if so you may look for ijanohya, mana cari OPAs ? i cant find them in Pasar road |
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Sep 10 2007, 12:37 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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A small wiring to include a DC IN wiring to your Cmoy power supply. Maybe tangent has it, have you checked?
'High' end opamp where can find in JP... try Farnell, RSComponents or Ijan. QUOTE(syyang85 @ Sep 9 2007, 09:40 PM) guys, any recommendations of part for the power section of the cmoy?I want to use it with wall power supply when im using it at home and battery when im goin out. any websites you can recommend? ohya, mana cari OPAs ? i cant find them in Pasar road |
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Sep 10 2007, 01:02 AM
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Senior Member
1,098 posts Joined: Oct 2004
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QUOTE(yeah_guyz @ Sep 9 2007, 06:33 PM) u mean make myself a pcb board? Quite easy leh.. lol maybe i can sell my self-made pcbs to u guys ... loli am not expert in electronic |
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Sep 10 2007, 02:48 AM
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Senior Member
3,980 posts Joined: Oct 2005 From: HeAv3N
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QUOTE(neoxz @ Sep 10 2007, 01:02 AM) Quite easy leh.. lol maybe i can sell my self-made pcbs to u guys ... lol dont even know how mini3 layout leh |
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Sep 10 2007, 04:57 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Its on the website. I would not say its an easy board to do but surely its a challenge!
Would I do it? Nahhh.. better buy the board! Makes life easier QUOTE(yeah_guyz @ Sep 10 2007, 02:48 AM) dont even know how mini3 layout leh |
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Sep 10 2007, 05:27 AM
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Senior Member
3,980 posts Joined: Oct 2005 From: HeAv3N
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QUOTE(jazzy939 @ Sep 10 2007, 04:57 AM) Its on the website. I would not say its an easy board to do but surely its a challenge! yeah!Would I do it? Nahhh.. better buy the board! Makes life easier that is what in my mind too |
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Sep 10 2007, 05:30 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Great! So, get many people to buy.. spread the shipping cost.. 'cheaper'!
QUOTE(yeah_guyz @ Sep 10 2007, 05:27 AM) yeah! that is what in my mind too |
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Sep 10 2007, 07:25 AM
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Senior Member
941 posts Joined: Nov 2005
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PCB is not hard to fabricate, but if u want good quality like the one produced by factory, that is not DIYable.
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Sep 10 2007, 02:30 PM
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Senior Member
1,098 posts Joined: Oct 2004
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QUOTE(jazzy939 @ Sep 10 2007, 04:57 AM) Its on the website. I would not say its an easy board to do but surely its a challenge! But if buy, there's no more joy of diy di Would I do it? Nahhh.. better buy the board! Makes life easier |
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Sep 10 2007, 02:33 PM
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Senior Member
727 posts Joined: Sep 2006
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Lol buy buy buy......don't miss out on this opportunity LOL!!!!
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Sep 10 2007, 02:50 PM
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Senior Member
1,065 posts Joined: Sep 2005
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Ijan oh Ijan. where are you?
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Sep 10 2007, 06:03 PM
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Senior Member
3,448 posts Joined: Jan 2003 From: Sarawak
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ahh..looking for me?
Neways, PCB diy punya will never be up to par with pro board with glass epoxy+silks creening and track pre-coating bla bla.. at USD10 was it for the mini cubed..its a good price (u can get cheaper if u make in bulk from the local store)..however, shipping for the mini cubed is a PHREAKING PIA!! I can make DIY mini cubed, but single sided, anything else is wire jumpered, and maybe the option of DIP sockets..hmmm...but it wont be nice looking. |
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Sep 10 2007, 07:40 PM
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Senior Member
982 posts Joined: May 2005
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Ijan oh Ijan, I wan buy OPA from you. how much u sell?
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Sep 10 2007, 11:49 PM
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Senior Member
1,098 posts Joined: Oct 2004
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QUOTE(ijan @ Sep 10 2007, 06:03 PM) ahh..looking for me? Can diy double side also ma..Neways, PCB diy punya will never be up to par with pro board with glass epoxy+silks creening and track pre-coating bla bla.. at USD10 was it for the mini cubed..its a good price (u can get cheaper if u make in bulk from the local store)..however, shipping for the mini cubed is a PHREAKING PIA!! I can make DIY mini cubed, but single sided, anything else is wire jumpered, and maybe the option of DIP sockets..hmmm...but it wont be nice looking. |
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Sep 11 2007, 12:06 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Single sided, simpler but 'messy':P
Double-sided.. needs s/ware assistance to do the layout:D QUOTE(neoxz @ Sep 10 2007, 11:49 PM) Can diy double side also ma.. |
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Sep 11 2007, 12:13 AM
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Senior Member
727 posts Joined: Sep 2006
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I would imagine it harder as you must really plan well before attempting such feats. LOL. But the challange might be interesting.....NOT:P
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Sep 11 2007, 06:01 AM
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Senior Member
941 posts Joined: Nov 2005
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actually, we can ask UKM to fabricate PCB and their price is cheaper compared to other company. i am not sure about the actual price as i heard this matter from my lecturer.
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Sep 11 2007, 07:12 AM
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Senior Member
3,448 posts Joined: Jan 2003 From: Sarawak
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double sided diy is based on ur material, but via connection between surfaces are almost impossible to DIY since u need perfect precision to align bottom n surface plane and not to mention via connection...aiyo..
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Sep 11 2007, 07:39 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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surely there must be a MOQ(minimum order quantity)?
CAn you verify this? TQ QUOTE(wui223 @ Sep 11 2007, 06:01 AM) actually, we can ask UKM to fabricate PCB and their price is cheaper compared to other company. i am not sure about the actual price as i heard this matter from my lecturer. This post has been edited by jazzy939: Sep 11 2007, 09:30 AM |
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Sep 11 2007, 09:03 AM
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Junior Member
305 posts Joined: Oct 2004
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Hi everyone. I usually just browse through what other people wrote in here. But I think I can share some knowledge here.
DIY double sided is possible and can be good enough if correct method is used. I did quite a number of double sided board using FR4 boards and acid bought from Pasar road. For alignment I usually used few reference points on the board. I would drill these 3 points and insert tiny pins into them. Using these pins, now you can align both side of the tracks. I used laser printer method where I would print my PCB design on a piece of glossy photo paper bought from Lowyat (careful of which type) and then iron these photo papers on the FR4 boards. After making sure they stick well to the FR4 boards, wash them with water (plus a little bit of soap powder). Then wash them with acid. The area without the black ink would be washed away by the acid. After all unwanted copper is washed away, use a sand paper to clean the board. Then start drilling using small drill bits for vias. Then use wrapping wires something like AWG30 thickness as your vias. Then you get yourself a cheap way of making home made PCB. I will post some pictures later if you guys want to see some samples. Another way is sending them China. I don't know how much is UKM charging as I never used them before. There's a company in Jalan Klang Lama (cannot remember the name) that also provides the service but not pretty good. If send to China, for some boards size of approximately 7 cm x 7 cm double layer with silkscreen is about USD55 for 10 boards. Shipping is about USD20. If you can get few guys to share the shipping, it will be cheaper. |
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Sep 11 2007, 09:22 AM
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Senior Member
941 posts Joined: Nov 2005
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i use the toner transfer method before, result quite good but need experience to handle the process. sometime need trimming if transfer not perfect.
i usually use photo resist board nowadays but expensive. another good way is use press n' peel paper, they are available at jln pasar now, i know a shop got sell them. but again this special paper imported and expensive but result is very good. PCB fabrication company usually charge quite expensive and need minimum order. if bulk buy definetly will go for their service as the quality is impressive. just the matter of money, depends on how much u willing to pay and how good u want it to be. |
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Sep 11 2007, 09:24 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Hi CE,
Thank you for the info. I personally have not done any double sided board but it is not impossible, just require a little planning and work. Let's see those pictures.. might get some people interested! You know what they say, a picture says a thousand words.. The China board maker, how's the quality of the workmanship? Thanks again. QUOTE(contagiouseddie @ Sep 11 2007, 09:03 AM) Hi everyone. I usually just browse through what other people wrote in here. But I think I can share some knowledge here. DIY double sided is possible and can be good enough if correct method is used. I did quite a number of double sided board using FR4 boards and acid bought from Pasar road. For alignment I usually used few reference points on the board. I would drill these 3 points and insert tiny pins into them. Using these pins, now you can align both side of the tracks. I used laser printer method where I would print my PCB design on a piece of glossy photo paper bought from Lowyat (careful of which type) and then iron these photo papers on the FR4 boards. After making sure they stick well to the FR4 boards, wash them with water (plus a little bit of soap powder). Then wash them with acid. The area without the black ink would be washed away by the acid. After all unwanted copper is washed away, use a sand paper to clean the board. Then start drilling using small drill bits for vias. Then use wrapping wires something like AWG30 thickness as your vias. Then you get yourself a cheap way of making home made PCB. I will post some pictures later if you guys want to see some samples. Another way is sending them China. I don't know how much is UKM charging as I never used them before. There's a company in Jalan Klang Lama (cannot remember the name) that also provides the service but not pretty good. If send to China, for some boards size of approximately 7 cm x 7 cm double layer with silkscreen is about USD55 for 10 boards. Shipping is about USD20. If you can get few guys to share the shipping, it will be cheaper. Added on September 11, 2007, 9:29 amhi wui. i use the toner transfer too. i guess it takes practice to make things 'perfect' I have NOT tried the photo resist board. seems 'simpler', only the cost is keeping it away.. what's press n feel? do you mind revealing the shop.. guess I will be in JP again this weekend agreed. you get what you pay for, most of the time! QUOTE(wui223 @ Sep 11 2007, 09:22 AM) i use the toner transfer method before, result quite good but need experience to handle the process. sometime need trimming if transfer not perfect. This post has been edited by jazzy939: Sep 11 2007, 09:29 AMi usually use photo resist board nowadays but expensive. another good way is use press n' peel paper, they are available at jln pasar now, i know a shop got sell them. but again this special paper imported and expensive but result is very good. PCB fabrication company usually charge quite expensive and need minimum order. if bulk buy definetly will go for their service as the quality is impressive. just the matter of money, depends on how much u willing to pay and how good u want it to be. |
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Sep 11 2007, 09:33 AM
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Junior Member
305 posts Joined: Oct 2004
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The pictures are not with me now. At night will post it up although I have some of the boards with me now.
I never had any problem with the China boards. The are great in quality and fast, about 7 working days. I order up to 6 layer board before and the quality is just fine. I saw the Mini Cubed schematic and PCB. IMHO, I think it will be ok for a home brewed PCB. I tried down to 10 mil tracks before using home brewed PCB. For audio circuits, it's best to make the tracks fat whenever possible. Press and Peel used to be only available from their website. Used to be USD 40 for 20 piece. Now it went down to USD 33. I think if I'm not mistaken I saw them in Maplin or Nixie (or both I guess) in Pasar Road. One question for everyone, which shop usually you guys go in Pasar Road? This post has been edited by contagiouseddie: Sep 11 2007, 09:38 AM |
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Sep 11 2007, 09:45 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Ok, will wait for you pixs tonite!
Agreed, the Mini cube board can be 'brewed' at home.. As far as JP shops are concerned.. I hv a few fav shops. Normally I'll hit Maplin and Nixie. Next would be Darson(upstairs) for the 'normal' stuffs.. Meter Trading as back up and the last shop on the left towards the end of JP(can't remember the name ).QUOTE(contagiouseddie @ Sep 11 2007, 09:33 AM) The pictures are not with me now. At night will post it up although I have some of the boards with me now. This post has been edited by jazzy939: Sep 11 2007, 11:20 AMI never had any problem with the China boards. The are great in quality and fast, about 7 working days. I order up to 6 layer board before and the quality is just fine. I saw the Mini Cubed schematic and PCB. IMHO, I think it will be ok for a home brewed PCB. I tried down to 10 mil tracks before using home brewed PCB. For audio circuits, it's best to make the tracks fat whenever possible. One question for everyone, which shop usually you guys go in Pasar Road? |
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Sep 11 2007, 11:18 AM
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Senior Member
727 posts Joined: Sep 2006
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Believe me....i have walked with Jazzy. Man do you need to charge your battery to max if not sure pancit LOL!!! He owns that JP area.
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Sep 11 2007, 11:21 AM
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Senior Member
1,098 posts Joined: Oct 2004
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QUOTE(ijan @ Sep 11 2007, 07:12 AM) double sided diy is based on ur material, but via connection between surfaces are almost impossible to DIY since u need perfect precision to align bottom n surface plane and not to mention via connection...aiyo.. yup, like mentioned above, you do not need any precision tools to align. I too did a few. and added some colour. This post has been edited by neoxz: Sep 11 2007, 11:31 AM |
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Sep 11 2007, 11:23 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Can we see some of your 'work'?
QUOTE(neoxz @ Sep 11 2007, 11:21 AM) yup, like mentioned above, you do not need any precision tools to align. I too did a few. and added some colour. |
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Sep 11 2007, 11:32 AM
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Senior Member
727 posts Joined: Sep 2006
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Yes yes yes please show us your master works!!!!
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Sep 11 2007, 11:34 AM
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1,098 posts Joined: Oct 2004
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QUOTE(jazzy939 @ Sep 11 2007, 11:23 AM) Can we see some of your 'work'? QUOTE(MadZiZ @ Sep 11 2007, 11:32 AM) Yes yes yes please show us your master works!!!! Posted above di ma...now searching for my drawn layout using dxp... dunno can find boh This post has been edited by neoxz: Sep 11 2007, 11:37 AM |
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Sep 11 2007, 11:42 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Nice work there, neoxz!
QUOTE(neoxz @ Sep 11 2007, 11:34 AM) Posted above di ma...now searching for my drawn layout using dxp... dunno can find boh |
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Sep 11 2007, 11:44 AM
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Senior Member
1,098 posts Joined: Oct 2004
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Nah.. just take it down for now....
Added on September 11, 2007, 11:48 am QUOTE(contagiouseddie @ Sep 11 2007, 09:03 AM) Hi everyone. I usually just browse through what other people wrote in here. But I think I can share some knowledge here. I just use normal A4 paper and shine my uv light. Of course, i prefer to use single sided. Saves time and money... and easier to troubleshootDIY double sided is possible and can be good enough if correct method is used. I did quite a number of double sided board using FR4 boards and acid bought from Pasar road. For alignment I usually used few reference points on the board. I would drill these 3 points and insert tiny pins into them. Using these pins, now you can align both side of the tracks. I used laser printer method where I would print my PCB design on a piece of glossy photo paper bought from Lowyat (careful of which type) and then iron these photo papers on the FR4 boards. After making sure they stick well to the FR4 boards, wash them with water (plus a little bit of soap powder). Then wash them with acid. The area without the black ink would be washed away by the acid. After all unwanted copper is washed away, use a sand paper to clean the board. Then start drilling using small drill bits for vias. Then use wrapping wires something like AWG30 thickness as your vias. Then you get yourself a cheap way of making home made PCB. I will post some pictures later if you guys want to see some samples. Another way is sending them China. I don't know how much is UKM charging as I never used them before. There's a company in Jalan Klang Lama (cannot remember the name) that also provides the service but not pretty good. If send to China, for some boards size of approximately 7 cm x 7 cm double layer with silkscreen is about USD55 for 10 boards. Shipping is about USD20. If you can get few guys to share the shipping, it will be cheaper. This post has been edited by neoxz: Sep 11 2007, 12:19 PM |
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Sep 11 2007, 11:48 AM
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Junior Member
305 posts Joined: Oct 2004
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QUOTE(neoxz @ Sep 11 2007, 11:21 AM) yup, like mentioned above, you do not need any precision tools to align. I too did a few. and added some colour. Hi Neo,That's a parallel port programmer for PIC right? How you get that green solder-mask for the board on the left? |
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Sep 11 2007, 11:50 AM
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Senior Member
1,098 posts Joined: Oct 2004
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QUOTE(contagiouseddie @ Sep 11 2007, 11:48 AM) Hi Neo, Pmed you the answer That's a parallel port programmer for PIC right? How you get that green solder-mask for the board on the left? |
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Sep 11 2007, 12:24 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Aik? answer in private.. don't wanna share with us, huh?
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Sep 11 2007, 12:30 PM
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Senior Member
1,098 posts Joined: Oct 2004
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QUOTE(jazzy939 @ Sep 11 2007, 12:24 PM) Aik? answer in private.. don't wanna share with us, huh? Hahaha.. edited This post has been edited by neoxz: Sep 11 2007, 12:49 PM |
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Sep 11 2007, 03:20 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Aik! It was there and then was gone! (edited)
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Sep 11 2007, 05:39 PM
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Senior Member
3,980 posts Joined: Oct 2005 From: HeAv3N
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QUOTE(ijan @ Sep 10 2007, 06:03 PM) ahh..looking for me? sorry for noob question, apa tu mini cubed?Neways, PCB diy punya will never be up to par with pro board with glass epoxy+silks creening and track pre-coating bla bla.. at USD10 was it for the mini cubed..its a good price (u can get cheaper if u make in bulk from the local store)..however, shipping for the mini cubed is a PHREAKING PIA!! I can make DIY mini cubed, but single sided, anything else is wire jumpered, and maybe the option of DIP sockets..hmmm...but it wont be nice looking. quote from headwize » Click to show Spoiler - click again to hide... « wow, diy pcb board, please come up with some pic making of pcb process |
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Sep 11 2007, 05:58 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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see post #167.
except there's no pictures.. QUOTE(yeah_guyz @ Sep 11 2007, 05:39 PM) sorry for noob question, apa tu mini cubed? wow, diy pcb board, please come up with some pic making of pcb process |
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Sep 11 2007, 06:03 PM
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Senior Member
6,489 posts Joined: Mar 2005 From: Serdang
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very power. start making me hand itchy wanna built one tomahawk...
=P |
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Sep 11 2007, 06:07 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Go PcWork, GO!
Make that Tomahawk! This will only make your life more satisfying... {poison words} QUOTE(PcWork @ Sep 11 2007, 06:03 PM) very power. start making me hand itchy wanna built one tomahawk... =P |
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Sep 11 2007, 06:18 PM
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Senior Member
1,098 posts Joined: Oct 2004
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There... some 1 has the schematic di... wanna make pcb?
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Sep 11 2007, 06:21 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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are you volunteering to make the PCB?
QUOTE(neoxz @ Sep 11 2007, 06:18 PM) There... some 1 has the schematic di... wanna make pcb? |
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Sep 11 2007, 06:34 PM
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Senior Member
3,448 posts Joined: Jan 2003 From: Sarawak
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wanna try to make pcb too, afaik the only thing closest to pcb i haf ever made was design and testing, production is skipped, only theoretical..gotta go and get stuffs tomorrow!
Sifu PCB-maker, tq tq! |
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Sep 11 2007, 06:37 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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I thought you're an 'old hand' at this!
Then again, it is never too late to start anything.. go bro..! QUOTE(ijan @ Sep 11 2007, 06:34 PM) wanna try to make pcb too, afaik the only thing closest to pcb i haf ever made was design and testing, production is skipped, only theoretical..gotta go and get stuffs tomorrow! Sifu PCB-maker, tq tq! |
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Sep 11 2007, 06:43 PM
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Senior Member
3,448 posts Joined: Jan 2003 From: Sarawak
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no, i was never in the process of making PCB board physically..i design and test..thats all, haha! So now want to start..
» Click to show Spoiler - click again to hide... « |
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Sep 11 2007, 06:52 PM
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Senior Member
6,489 posts Joined: Mar 2005 From: Serdang
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QUOTE(jazzy939 @ Sep 11 2007, 06:07 PM) Go PcWork, GO! no worry. after i get that done, i will come back to poison you with modded HP890 + DIYed Toma?Make that Tomahawk! This will only make your life more satisfying... {poison words} |
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Sep 11 2007, 06:57 PM
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Senior Member
1,098 posts Joined: Oct 2004
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QUOTE(jazzy939 @ Sep 11 2007, 06:21 PM) are you volunteering to make the PCB? can also.... but wat's the input to c+, 15 volts? if not then how the 7812 gonna work? Maybe wanna test it on a breadboard 1st before designing the pcb... any 1 of u guys wanna help? My location's in Pg.Added on September 11, 2007, 6:59 pmNvm, just saw it's from the adapter... Added on September 11, 2007, 7:19 pmhelp on testing the circuit 1st on breadboard 1st to confirm if it's working This post has been edited by neoxz: Sep 11 2007, 07:19 PM |
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Sep 11 2007, 07:39 PM
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Senior Member
3,980 posts Joined: Oct 2005 From: HeAv3N
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QUOTE(ijan @ Sep 11 2007, 06:43 PM) no, i was never in the process of making PCB board physically..i design and test..thats all, haha! So now want to start.. go ahead and make Mini3 pcb board , i will be your 1st customer» Click to show Spoiler - click again to hide... « make sure the quality is like what u said Neways, PCB diy punya will never be up to par with pro board with glass epoxy+silks creening and track pre-coating bla bla.. |
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Sep 11 2007, 07:41 PM
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Senior Member
1,098 posts Joined: Oct 2004
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QUOTE(yeah_guyz @ Sep 11 2007, 07:39 PM) go ahead and make Mini3 pcb board , i will be your 1st customer Using uv glass epoxy make sure the quality is like what u said Neways, PCB diy punya will never be up to par with pro board with glass epoxy+silks creening and track pre-coating bla bla.. with special coating... hahaha. sure 1st customer? dont ffk ya |
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Sep 11 2007, 07:46 PM
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Senior Member
3,980 posts Joined: Oct 2005 From: HeAv3N
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QUOTE(jazzy939 @ Sep 11 2007, 05:58 PM) see post #167. u means this?except there's no pictures.. QUOTE Thanks, amb. That's going to be a big help, not only in sourcing the parts and dealing with potential grounding issues, but also in the look of the finished product. I think the absence of visible nuts and washers on the facade will give the amp a real pro look. Thanks, too, for the resistor advice. If I can't turn up the easy-to-do resistor option I'll have a go at your resistors in parallel idea or dougigs's SMD. SMD soldering looks hard to do - I was amazed by the size of the Pimeta op-amp. I wonder if my eyesight is up to it. too techincal, cant understand |
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Sep 11 2007, 08:16 PM
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Senior Member
3,448 posts Joined: Jan 2003 From: Sarawak
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haha, wat a u ppl, u guys can dream la
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Sep 11 2007, 08:29 PM
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Junior Member
305 posts Joined: Oct 2004
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Here's double layer home brewed PCBs.
Attached thumbnail(s) 
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Sep 11 2007, 08:38 PM
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Senior Member
3,448 posts Joined: Jan 2003 From: Sarawak
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Heres a 10 min werk in Cadence on a simple 78XX voltage regulator with the tab bolted to the plane as heatsinks. Comments?
COuld haf been smaller and more organized..but rusty Cadence.. This post has been edited by ijan: Sep 11 2007, 08:40 PM |
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Sep 11 2007, 08:57 PM
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Senior Member
3,980 posts Joined: Oct 2005 From: HeAv3N
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QUOTE(neoxz @ Sep 11 2007, 07:41 PM) Using uv glass epoxy hehe, let's see how the work 1st with special coating... hahaha. sure 1st customer? dont ffk ya i can even help you can handle the bulk (for sure i get my self free pcb )QUOTE(ijan @ Sep 11 2007, 08:38 PM) Heres a 10 min werk in Cadence on a simple 78XX voltage regulator with the tab bolted to the plane as heatsinks. Comments? ijan!!! it's time for open a new threadCOuld haf been smaller and more organized..but rusty Cadence.. DIY PCB theard, how to diy pcb, procedure, what material if not this theard looks like rojak thread |
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Sep 11 2007, 09:00 PM
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Senior Member
3,448 posts Joined: Jan 2003 From: Sarawak
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no la, the others should host the thred id efer one was opened since i dun haf much knowledge on pcb building..still looking for my cadence manual...
wanna make my first PCB project, my 16A 24V-DC super regulated PSU... This post has been edited by ijan: Sep 11 2007, 09:17 PM |
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Sep 11 2007, 09:35 PM
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Senior Member
1,098 posts Joined: Oct 2004
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QUOTE(ijan @ Sep 11 2007, 09:00 PM) no la, the others should host the thred id efer one was opened since i dun haf much knowledge on pcb building..still looking for my cadence manual... Yeah... make a new thread for it, i would agree.. 16A, that would be expensive wanna make my first PCB project, my 16A 24V-DC super regulated PSU... I design my pcbs using Protel DXP. much nicer This post has been edited by neoxz: Sep 11 2007, 09:39 PM |
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Sep 11 2007, 09:50 PM
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Senior Member
3,980 posts Joined: Oct 2005 From: HeAv3N
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QUOTE(neoxz @ Sep 11 2007, 09:35 PM) Yeah... make a new thread for it, i would agree.. 16A, that would be expensive since you are the 1st one who said go ahead diy pcbI design my pcbs using Protel DXP. much nicer so you are also the one open a new thread |
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Sep 11 2007, 09:51 PM
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Senior Member
1,098 posts Joined: Oct 2004
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QUOTE(yeah_guyz @ Sep 11 2007, 09:50 PM) since you are the 1st one who said go ahead diy pcb hahha.. okies... but let me get the pcb of the mini3 out 1st... give me 2-3 weeks.. then i can post pcbs concerning audiophiles. so you are also the one open a new thread This post has been edited by neoxz: Sep 11 2007, 09:53 PM |
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Sep 11 2007, 09:54 PM
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Senior Member
3,448 posts Joined: Jan 2003 From: Sarawak
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------ edit -------
This post has been edited by ijan: Sep 11 2007, 10:12 PM |
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Sep 12 2007, 12:02 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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I can't wait to be poisoned (again)
QUOTE(PcWork @ Sep 11 2007, 06:52 PM) no worry. after i get that done, i will come back to poison you with modded HP890 + DIYed Toma? Added on September 12, 2007, 12:06 amNo lah.. this one: "DIY double sided is possible and can be good enough if correct method is used. I did quite a number of double sided board using FR4 boards and acid bought from Pasar road. For alignment I usually used few reference points on the board. I would drill these 3 points and insert tiny pins into them. Using these pins, now you can align both side of the tracks. I used laser printer method where I would print my PCB design on a piece of glossy photo paper bought from Lowyat (careful of which type) and then iron these photo papers on the FR4 boards. After making sure they stick well to the FR4 boards, wash them with water (plus a little bit of soap powder). Then wash them with acid. The area without the black ink would be washed away by the acid. After all unwanted copper is washed away, use a sand paper to clean the board. Then start drilling using small drill bits for vias. Then use wrapping wires something like AWG30 thickness as your vias." QUOTE(yeah_guyz @ Sep 11 2007, 07:46 PM) u means this? too techincal, cant understand Added on September 12, 2007, 12:08 amI wish I could but you're too far up north ler.... QUOTE(neoxz @ Sep 11 2007, 06:57 PM) can also.... but wat's the input to c+, 15 volts? if not then how the 7812 gonna work? Maybe wanna test it on a breadboard 1st before designing the pcb... any 1 of u guys wanna help? My location's in Pg. This post has been edited by jazzy939: Sep 12 2007, 12:08 AMAdded on September 11, 2007, 7:19 pmhelp on testing the circuit 1st on breadboard 1st to confirm if it's working |
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Sep 12 2007, 09:29 AM
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Senior Member
727 posts Joined: Sep 2006
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Biggest poison = PCWork. LoL!!!!! Naughty PCWork!!!
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Sep 13 2007, 12:51 AM
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Senior Member
3,448 posts Joined: Jan 2003 From: Sarawak
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 See what happens tomorrow then... |
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Sep 13 2007, 12:56 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Wahhh u bagi PCB without part lists and component placement
This post has been edited by jazzy939: Sep 13 2007, 12:58 AM |
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Sep 13 2007, 01:19 AM
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Senior Member
727 posts Joined: Sep 2006
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he dowan reveal his secrets kot??? LOL kidding only ma.....
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Sep 13 2007, 02:55 AM
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Senior Member
1,098 posts Joined: Oct 2004
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QUOTE(ijan @ Sep 13 2007, 12:51 AM) See what happens tomorrow then... |
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Sep 13 2007, 04:38 AM
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Senior Member
3,980 posts Joined: Oct 2005 From: HeAv3N
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QUOTE(neoxz @ Sep 13 2007, 02:55 AM) Wat board is that? dont you see that?ijan Cmoy Cmoy is a headphone amp |
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Sep 13 2007, 07:18 AM
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Senior Member
3,448 posts Joined: Jan 2003 From: Sarawak
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that is like prototype, i dun think its good..i was rushing it so i can print it out at office and try to make one tonight (my home laser printer is rosak..demmit).
Nets are thin, they could haf been bigger, layout is not optimized, they could haf been shorter..much more can be done, item footsize could haf been more accurate, prototype nyiaa 20mils track, see matte paper+toner transfer+laminating machine can do the werk or not.. |
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Sep 13 2007, 07:58 AM
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Senior Member
4,234 posts Joined: Nov 2004
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ijan, what software did you used for the job? Thanks!
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Sep 13 2007, 09:38 AM
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Senior Member
3,448 posts Joined: Jan 2003 From: Sarawak
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Cadence Orcad Layout..i haf yet to learn the crook and nook and its far from perfect..i thin sum other sifu here pakai protel made much much better board design..
My home laser cannot print black..but nanti hantam try print yellow toner..hehe! |
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Sep 13 2007, 09:53 AM
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Junior Member
63 posts Joined: Nov 2004
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Sorry for barging in on the discussion but I need some help from you guys.
I need to pick a 12-bit DAC to be used wih a microproc (Motorola 68k) so that I could output a sinusoidal, triangular and staircase from the said microproc to an oscillosope. I think that I've got the other areas (i.e power supply [transformer, diode diamond bridge, 7812 and etc]switches,amplifier [ua741 with feedback and etc]) covered but I need help choosing a suitable DAC (i.e easily available, cheap, and reliable). I would truly appreciate it if you guys helped me I |
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Sep 13 2007, 01:33 PM
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Senior Member
727 posts Joined: Sep 2006
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Come on guys lets hear your knowledgable wisdoms.
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Sep 13 2007, 01:42 PM
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Senior Member
8,046 posts Joined: Jan 2003
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QUOTE(ijan @ Sep 13 2007, 07:18 AM) Nets are thin, they could haf been bigger, layout is not optimized, they could haf been shorter..much more can be done, item footsize could haf been more accurate, prototype nyiaa Damn right its not optimized. Tracks should be at least 50mils and above, solder pads should be much bigger for obvious reasons. 20mils track, see matte paper+toner transfer+laminating machine can do the werk or not..This post has been edited by bsl555: Sep 14 2007, 01:44 PM |
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Sep 13 2007, 01:44 PM
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Senior Member
727 posts Joined: Sep 2006
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Waah bro bsl555 to the rescue
Good work la bro |
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Sep 13 2007, 03:54 PM
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Senior Member
941 posts Joined: Nov 2005
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how u guys dispose the ferritic chloride solution after etching? i use sodium bicarbonate(baking soda powder) to neutralize it and dispose.
anyway can get ammonium persulphate at local? it is better than the ferritic chloride bcoz it won leave stain on clothes. i have a few clothes got those yellow stain which is very bad looking. |
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Sep 13 2007, 05:34 PM
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Senior Member
1,098 posts Joined: Oct 2004
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So some1's on the mini3 di.. ?
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Sep 14 2007, 12:10 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Same here.
I have no idea where to get ammonium persulfate(spelt with an F)... yes, ferric chloride will stain your clothes! wear protective clothing when handling such a fluid... QUOTE(wui223 @ Sep 13 2007, 03:54 PM) how u guys dispose the ferritic chloride solution after etching? i use sodium bicarbonate(baking soda powder) to neutralize it and dispose. anyway can get ammonium persulphate at local? it is better than the ferritic chloride bcoz it won leave stain on clothes. i have a few clothes got those yellow stain which is very bad looking. Added on September 14, 2007, 12:10 amI think so! QUOTE(neoxz @ Sep 13 2007, 05:34 PM) So some1's on the mini3 di.. ? This post has been edited by jazzy939: Sep 14 2007, 12:15 AM |
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Sep 14 2007, 05:53 AM
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Senior Member
727 posts Joined: Sep 2006
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Techies.........why make it so not understandable???
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Sep 14 2007, 09:32 AM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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QUOTE(MadZiZ @ Sep 14 2007, 05:53 AM) Techies.........why make it so not understandable??? Whoa, this is swinging from electronics to chemistry lessons.....now my jaw has really dropped off my face. |
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Sep 14 2007, 09:43 AM
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727 posts Joined: Sep 2006
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Chemistry isit? I thought they were talking Par Le Franceeeee
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Sep 14 2007, 05:11 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Aloo guys.. this is 'nothing' ler...
maybe a 'lil bit techy but, there's no other way.. |
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Sep 14 2007, 05:24 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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dgrebel,
The PSU project that you wanted to do. This is my Bench PSU, 0-30VDC, 3A Max for my DIY power supply needs. You want to do the same, smaller or bigger scale than this? |
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Sep 14 2007, 07:00 PM
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Senior Member
3,448 posts Joined: Jan 2003 From: Sarawak
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ur bench psu, the board u buat urself too ka? what is the IC at the center of the board? linear regulated bench psu ka?
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Sep 14 2007, 07:42 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Nahh.. board ready made. Cheaper!(easier also)
The IC, LM723 is a voltage regulator, yes it is used as a linear regulated bench psu. QUOTE(ijan @ Sep 14 2007, 07:00 PM) ur bench psu, the board u buat urself too ka? what is the IC at the center of the board? linear regulated bench psu ka? |
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Sep 14 2007, 07:47 PM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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QUOTE(jazzy939 @ Sep 14 2007, 05:24 PM) dgrebel, Hey_hey_hey! I wanna learn to do something like that too! Is that from a standard DIY kit?The PSU project that you wanted to do. This is my Bench PSU, 0-30VDC, 3A Max for my DIY power supply needs. You want to do the same, smaller or bigger scale than this? |
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Sep 14 2007, 07:55 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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yes. starts form a 'basic kit'. the panel meter, switches, neon indicator, bind/plug posts, circuit board risers, metal box are own add ons/enhancements
I almost went overboard initially of wanting to install a digital display! Probably my next PSU will have it. Variable voltage, variable current variation... March05, 'anyone' with some time, effort and interest can do this... I think the whole lot cost me the most, RM60! It's a 'steal'... You wanna join dgrebel to build one? QUOTE(March05 @ Sep 14 2007, 07:47 PM) Hey_hey_hey! I wanna learn to do something like that too! Is that from a standard DIY kit? This post has been edited by jazzy939: Sep 14 2007, 07:59 PM |
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Sep 14 2007, 08:17 PM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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QUOTE(jazzy939 @ Sep 14 2007, 07:55 PM) .....I almost went overboard initially of wanting to install a digital display! Heehee, dual digital displays for voltage and current output respectively was on the tip of my tongue....can do or not? I'm looking for a PSU with variable output control accurate to around 0.1 volts and 10 milliamps....analog readouts may not cut it.But I got to go through kindergarten first, so ya, I'll join dgrebel on this one. |
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Sep 14 2007, 09:58 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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That would be my flagship bench PSU!
Looks like we have the same thing on our mind.. _+.1 volts accuracy is not a major issue.. I am still working/looking for the best design for 10mA current resolution. At this level, you have to go digital.. more likely LCD display But we have to take little steps at a time ya... Me and dgrebel might meetup at JP tomorrow afternoon for his PSU parts shopping... you're welcome to join. QUOTE(March05 @ Sep 14 2007, 08:17 PM) Heehee, dual digital displays for voltage and current output respectively was on the tip of my tongue....can do or not? I'm looking for a PSU with variable output control accurate to around 0.1 volts and 10 milliamps....analog readouts may not cut it. This post has been edited by jazzy939: Sep 14 2007, 09:59 PMBut I got to go through kindergarten first, so ya, I'll join dgrebel on this one. |
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Sep 14 2007, 10:44 PM
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Senior Member
1,098 posts Joined: Oct 2004
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QUOTE(jazzy939 @ Sep 14 2007, 12:10 AM) Same here. So i no need do di ?I have no idea where to get ammonium persulfate(spelt with an F)... yes, ferric chloride will stain your clothes! wear protective clothing when handling such a fluid... Added on September 14, 2007, 12:10 amI think so! |
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Sep 14 2007, 10:53 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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errr I hv the idea that someone is looking into that mini3 pcb.. was it u? hv to read thethread again..
QUOTE(neoxz @ Sep 14 2007, 10:44 PM) So i no need do di ? |
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Sep 14 2007, 11:00 PM
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Senior Member
1,098 posts Joined: Oct 2004
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QUOTE(jazzy939 @ Sep 14 2007, 10:53 PM) errr I hv the idea that someone is looking into that mini3 pcb.. was it u? hv to read thethread again.. Lol... if some 1 else's doing it, then i guess it's not necessary for me to do. |
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Sep 14 2007, 11:07 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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why don't you do it also? the more the merrier?
I am sure, well, at least yeah_guyz would be interested... QUOTE(neoxz @ Sep 14 2007, 11:00 PM) Lol... if some 1 else's doing it, then i guess it's not necessary for me to do. |
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Sep 14 2007, 11:55 PM
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Senior Member
8,046 posts Joined: Jan 2003
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QUOTE(jazzy939 @ Sep 14 2007, 07:55 PM) yes. starts form a 'basic kit'. the panel meter, switches, neon indicator, bind/plug posts, circuit board risers, metal box are own add ons/enhancements I built a basic one donkey decades ago but the regulator was the primitive metal can uA723. The circuit hasn't changed since (comparing to yours) except that your regulator chip is DIL package. Mine was very basic 2Amp tranny..no meter, no frills..just the terminals, power switch in front, packed in a small chassis..no heat sink at the back. Not amazingly..its still working today.I almost went overboard initially of wanting to install a digital display! Probably my next PSU will have it. Variable voltage, variable current variation... I think there's used dual tracking PSU's on the market going for a good price..and I see on coming over the hill soon. |
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Sep 15 2007, 12:14 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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bro bsl555,
looks like you're an old hand at kit building too! there are other things to talk about besides vinyls eh? QUOTE(bsl555 @ Sep 14 2007, 11:55 PM) I built a basic one donkey decades ago but the regulator was the primitive metal can uA723. The circuit hasn't changed since (comparing to yours) except that your regulator chip is DIL package. Mine was very basic 2Amp tranny..no meter, no frills..just the terminals, power switch in front, packed in a small chassis..no heat sink at the back. Not amazingly..its still working today. I think there's used dual tracking PSU's on the market going for a good price..and I see on coming over the hill soon. |
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Sep 15 2007, 12:19 AM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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QUOTE(jazzy939 @ Sep 14 2007, 09:58 PM) Me and dgrebel might meetup at JP tomorrow afternoon for his PSU parts shopping... you're welcome to join. Me and bsl555 have a lunch appointment So if we chat too much, I might not be able to make it to JP......I'll pm you my hp no. in a little while. I should still have dgrebel's. Will see if I can join you folks too. It's going to be a busy Saturday! bsl555 is our resident DIY sifu in usj.com lah. |
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Sep 15 2007, 12:32 AM
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Senior Member
8,046 posts Joined: Jan 2003
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QUOTE(jazzy939 @ Sep 15 2007, 12:14 AM) bro bsl555, Oh well..been there..done that.. but somewhat in & out over the years..(there were points of time where finance don't allow continuance...I suppose many face the same predicament one time or other) just that I'm paying more attention to detail to get the best ever from playing vinyl..utilizing every bit of whatever skill or knowledge acquired over the years...nevertheless I'm still learning new things too!..THAT keeps me SANE!. I already have a stack of records with lots of music I don't think I can find on cd..so they'll serve for music I fancy. looks like you're an old hand at kit building too! there are other things to talk about besides vinyls eh? QUOTE(March05 @ Sep 15 2007, 12:19 AM) bsl555 is our resident DIY sifu in usj.com lah. No lah!..  This post has been edited by bsl555: Sep 15 2007, 12:34 AM |
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Sep 15 2007, 12:49 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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No worries bro March, u have a good one with bsl555. Whatever dgrebel is getting, I just double it
Hmm.. maybe bsl555 can be a consulting sifu here too? QUOTE(March05 @ Sep 15 2007, 12:19 AM) Me and bsl555 have a lunch appointment This post has been edited by jazzy939: Sep 15 2007, 12:50 AM So if we chat too much, I might not be able to make it to JP......I'll pm you my hp no. in a little while. I should still have dgrebel's. Will see if I can join you folks too. It's going to be a busy Saturday! bsl555 is our resident DIY sifu in usj.com lah. |
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Sep 15 2007, 11:32 AM
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Senior Member
727 posts Joined: Sep 2006
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Battle of the siffoo's LOL!!!! Come come.........
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Sep 15 2007, 11:52 AM
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Senior Member
8,046 posts Joined: Jan 2003
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QUOTE(MadZiZ @ Sep 15 2007, 11:32 AM) Battle of the siffoo's LOL!!!! Come come......... No battle!  Just sharing experiences.. BTW..me NO sifu!..many flers here better than me. Thanks!. |
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Sep 15 2007, 03:06 PM
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Senior Member
727 posts Joined: Sep 2006
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Lol me kidding only ma.....just the more C-Fu.....the more knowledge to be tapped
That would benefit this hobby |
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Sep 15 2007, 10:20 PM
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Senior Member
3,448 posts Joined: Jan 2003 From: Sarawak
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neways, on the idea of the high power high precision benchmark psu with adjustable current+voltage, might i suggest OPA549T for all your need?
http://focus.ti.com/lit/ds/symlink/opa549.pdf See page 12 and 13, PROGRAMMABLE POWER SUPPLY A programmable source/sink power supply can easily be built using the OPA549. Both the output voltage and output current are user-controlled. See Figure 10 for a circuit using potentiometers to adjust the output voltage and current while Figure 11 uses DACs. An LED connected to the E/S pin through a logic gate indicates if the OPA549 is in thermal shutdown. This post has been edited by ijan: Sep 15 2007, 10:20 PM |
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Sep 15 2007, 10:27 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Thanks for the ifo ijan. Will definitely look into it!
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Sep 15 2007, 11:26 PM
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Senior Member
3,448 posts Joined: Jan 2003 From: Sarawak
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-- edit -- wrong thread.
This post has been edited by ijan: Sep 16 2007, 12:31 AM |
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Sep 23 2007, 11:00 PM
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Senior Member
1,339 posts Joined: Oct 2005
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Guys, what's your next project? I think I'm going to start to DIY and modding stuff after Raya. Maybe we can do it together. I'm planning to start with an external PSU. then the DAC, the Amp, etc.
Gonna need a new soldering iron and stuff though.. All my irons are rusty.. long time no use.. heheh... |
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Sep 23 2007, 11:04 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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I dunno about the others, but already started on my own portable amp. This would be a whole lot cheaper than a Cmoy. 100% discrete (no opamp). yesterday completed the circuit board. time to install the components and test it.
You definitely need a new set of stuffs. What level of electronic hobbyist/kit builder are you?Anyway, welcome to the club! QUOTE(grandspy @ Sep 23 2007, 11:00 PM) Guys, what's your next project? I think I'm going to start to DIY and modding stuff after Raya. Maybe we can do it together. I'm planning to start with an external PSU. then the DAC, the Amp, etc. This post has been edited by jazzy939: Sep 23 2007, 11:09 PMGonna need a new soldering iron and stuff though.. All my irons are rusty.. long time no use.. heheh... |
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Sep 23 2007, 11:13 PM
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Senior Member
1,339 posts Joined: Oct 2005
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QUOTE(jazzy939 @ Sep 23 2007, 11:04 PM) You definitely need a new set of stuffs. What level of electronic hobbyist/kit builder are you?Anyway, welcome to the club! What level I am? I'm still struggling to differentiate a capacitor and a resistor.  |
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Sep 23 2007, 11:18 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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U have to work on that! HAHAHA !
I hope you meant that as a joke... So far we have MadZiZ and dgrebel as far as beginners are concerned. The other are probably experienced/advanced. QUOTE(grandspy @ Sep 23 2007, 11:13 PM) What level I am? I'm still struggling to differentiate a capacitor and a resistor. |
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Sep 23 2007, 11:49 PM
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Senior Member
3,448 posts Joined: Jan 2003 From: Sarawak
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care to share schematics jazzy?
if its propeity, no problem here |
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Sep 24 2007, 12:04 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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I will as soon as I have completed the whole 'kit'.
MadZiZ was actually pushing me for this one. A beginners amp to start before jumping into cmoy and the works. The keyword here is cheap,simple but quality. Discrete amps are abundance on the Net. Just some modification to suit one application. Thanks for the interest ijan, will definitely want you to look into it for improvements.. QUOTE(ijan @ Sep 23 2007, 11:49 PM) care to share schematics jazzy? if its propeity, no problem here |
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Sep 24 2007, 12:22 AM
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Senior Member
8,046 posts Joined: Jan 2003
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Its one of the oldest adjustable PSU circuit.. cheap and simple to build.
http://www.zen22142.zen.co.uk/Circuits/Power/723psu.htm http://www.electronics-lab.com/projects/power/032/index.html |
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Sep 24 2007, 12:29 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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The second circuit is more simpler..
QUOTE(bsl555 @ Sep 24 2007, 12:22 AM) Its one of the oldest adjustable PSU circuit.. cheap and simple to build. http://www.zen22142.zen.co.uk/Circuits/Power/723psu.htm http://www.electronics-lab.com/projects/power/032/index.html |
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Sep 24 2007, 12:35 AM
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Senior Member
727 posts Joined: Sep 2006
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I am lost!!! Hahah....dun understand need someone to show me then sure can do.
Otherwise amp mite blow up if attempt without guidance LOL |
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Sep 24 2007, 12:40 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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You can either 'blowup' the transistor or speakers(if connected) but no danger of the thing blowing up in the face
We'll take it one day at a time ya! BTW, looks like our discrete amp is coming up.. slowly but surely QUOTE(MadZiZ @ Sep 24 2007, 12:35 AM) I am lost!!! Hahah....dun understand need someone to show me then sure can do. Otherwise amp mite blow up if attempt without guidance LOL |
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Sep 24 2007, 01:06 AM
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Senior Member
8,046 posts Joined: Jan 2003
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QUOTE(MadZiZ @ Sep 24 2007, 12:35 AM) I am lost!!! Hahah....dun understand need someone to show me then sure can do. Actually one method of learning is someone knowledgeble (like Jazzy?) to sit beside you (with kit and all) guiding you step by step in the construction..along with developing skill in soldering, identifying the parts and pertinent safety precautions... Errrrrr!....don't look at me... Otherwise amp mite blow up if attempt without guidance LOL This post has been edited by bsl555: Sep 24 2007, 01:18 AM |
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Sep 24 2007, 02:18 PM
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Senior Member
1,339 posts Joined: Oct 2005
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Which Toroidal Transformer should I get?
1. Multicomp for RM68.00 or 2. Nuvotem for RM96.00 ? Both are 30VA, 2 x 12V hmm... |
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Sep 24 2007, 02:23 PM
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Senior Member
8,046 posts Joined: Jan 2003
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QUOTE(grandspy @ Sep 24 2007, 02:18 PM) Which Toroidal Transformer should I get? You should go for at least 80 to 120VA transformer.. trust me!..it costs only a fraction more..1. Multicomp for RM68.00 or 2. Nuvotem for RM96.00 ? Both are 30VA, 2 x 12V hmm... Moreover, you can parallel the two 12V windings to obtain maximum current delivery. BTW, you'd have to know the precaution when mounting a toroidal tranny..its not like as simply mounting the ordinary E-core transformer with 2 bolts. Essentially, the toroidal must NOT have contact with the base of chassis (there's a rubber insulator at bottom and the center bolt (not tightened too hard either) should NOT be too near or have contact with the top or cover of chassis. This post has been edited by bsl555: Sep 24 2007, 02:37 PM |
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Sep 24 2007, 02:25 PM
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Senior Member
2,475 posts Joined: Nov 2005 From: kopitiam
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yeah im a noob. but at soldering oni. hahaha.. now not a soldering noob anymore.
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Sep 24 2007, 02:54 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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dgrebel,
congrats! now you can solder to your heart content! (just like MadZiZ) Whats the progress on your PSU? Is it working already? QUOTE(dgrebel @ Sep 24 2007, 02:25 PM) yeah im a noob. but at soldering oni. hahaha.. now not a soldering noob anymore. |
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Sep 24 2007, 02:57 PM
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Senior Member
8,046 posts Joined: Jan 2003
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QUOTE(dgrebel @ Sep 24 2007, 02:25 PM) yeah im a noob. but at soldering oni. hahaha.. now not a soldering noob anymore. Some advice. Please beware that fumes from soldering is poisonous and breathing them in can cause problems. Do soldering where there's good ventilation. Hakko have got fume extractor for the purpose..but there's alternative brands at cheaper price can be found. |
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Sep 24 2007, 03:00 PM
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Senior Member
1,339 posts Joined: Oct 2005
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QUOTE(bsl555 @ Sep 24 2007, 02:23 PM) You should go for at least 80 to 120VA transformer.. trust me!..it costs only a fraction more.. 120VA? That's too much! Moreover, you can parallel the two 12V windings to obtain maximum current delivery. BTW, you'd have to know the precaution when mounting a toroidal tranny..its not like as simply mounting the ordinary E-core transformer with 2 bolts. Essentially, the toroidal must NOT have contact with the base of chassis (there's a rubber insulator at bottom and the center bolt (not tightened too hard either) should NOT be too near or have contact with the top or cover of chassis. I only need them to feed my X-DAC. For the Lab, I already have this:
Anyway, thanks for the installation tips QUOTE(dgrebel @ Sep 24 2007, 02:25 PM) yeah im a noob. but at soldering oni. hahaha.. now not a soldering noob anymore. Bro, it took me months to master the art of soldering. You not need only to know how to solder eletronic components onto PCB, but how to solder 2 pcs of wires together, two pcs of different wires, wire to connector (1001 types of connectors), etc. Also, need to know the types of solders, soldering irons, etc. |
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Sep 24 2007, 03:09 PM
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Senior Member
8,046 posts Joined: Jan 2003
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QUOTE(grandspy @ Sep 24 2007, 03:00 PM) 120VA? That's too much! Me have been using a 80VA model for years, now its powering 2 out of 3 MF X-series component. I've observed the 80VA quite effortless and hardly any heat. BTW..your X-DAC should be fed with AC voltage input..not DC I presume,. I only need them to feed my X-DAC. |
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Sep 24 2007, 03:33 PM
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Senior Member
1,339 posts Joined: Oct 2005
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QUOTE(bsl555 @ Sep 24 2007, 03:09 PM) Me have been using a 80VA model for years, now its powering 2 out of 3 MF X-series component. I've observed the 80VA quite effortless and hardly any heat. BTW..your X-DAC should be fed with AC voltage input..not DC I presume,. Hmm... 80VA huh? I though 30VA is more that enough as the current rating for my X-DAC is only 500mA. 30VA will give out max 1.25A. Yes, it's a 12VAC input. So output from the tranny will go directly to X-DAC power jack. |
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Sep 24 2007, 05:09 PM
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Senior Member
2,475 posts Joined: Nov 2005 From: kopitiam
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QUOTE(jazzy939 @ Sep 24 2007, 02:54 PM) dgrebel, give me some time on the weekend. now, on studying mode.congrats! now you can solder to your heart content! (just like MadZiZ) Whats the progress on your PSU? Is it working already? |
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Sep 24 2007, 08:58 PM
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Senior Member
3,448 posts Joined: Jan 2003 From: Sarawak
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there is no error in having bigger va in psu, just size+weight, if u can opt to haf that, go uncle bsl way. 120VA..thats heavy...
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Sep 24 2007, 09:18 PM
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Senior Member
8,046 posts Joined: Jan 2003
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QUOTE(ijan @ Sep 24 2007, 08:58 PM) 120VA..thats heavy... No lah.. only 1.2kg.. I used a similar one (18V type) to replace a burnt out tranny in a budget JBL HT amplifier. |
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Sep 24 2007, 09:38 PM
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Junior Member
142 posts Joined: Feb 2005 From: kl
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QUOTE(grandspy @ Sep 23 2007, 11:00 PM) Guys, what's your next project? I think I'm going to start to DIY and modding stuff after Raya. Maybe we can do it together. I'm planning to start with an external PSU. then the DAC, the Amp, etc. hi guys,an old e&e student here. can i join u guys 4 the so called diy n modding stuff. study e&e but my tech skill are low. Gonna need a new soldering iron and stuff though.. All my irons are rusty.. long time no use.. heheh... blown my 20 bux soldering iron last 2 most working on a project for my electronic manufacturing corse. my college lab tech adviseson buying a high power/wattae iron for soldering. whats r u guys opinion on this. |
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Sep 24 2007, 09:42 PM
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Senior Member
3,448 posts Joined: Jan 2003 From: Sarawak
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buy GOOD BRANDED sufficient power, soldering iron. Hakko DASH 25W are GREAT for serious starters! IMHO la..
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Sep 24 2007, 09:48 PM
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Junior Member
142 posts Joined: Feb 2005 From: kl
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QUOTE(ijan @ Sep 24 2007, 09:42 PM) buy GOOD BRANDED sufficient power, soldering iron. Hakko DASH 25W are GREAT for serious starters! IMHO la.. dash eh, 1 shop at jln psr recomend me mach 1. sumore saidhakko r cheaper nowdays. |
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Sep 24 2007, 10:26 PM
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Senior Member
3,448 posts Joined: Jan 2003 From: Sarawak
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cheaper meh, the prices are increasing actually from the last last time i bought mine. Mach-1 is better, but its more than twice the price of DASH..if ur going to Mach, ur better off getting hakko 936 solder station, good perfomance for the price (around twice the price of Mach series).
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Sep 24 2007, 11:15 PM
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Senior Member
8,046 posts Joined: Jan 2003
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Hakko Dash is good enough for most purposes lah.
I've been using Hakko 1st generation gun type for more than a decade till todate...just being prudent and it suffices nearly all my work.. |
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Sep 24 2007, 11:32 PM
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Senior Member
3,448 posts Joined: Jan 2003 From: Sarawak
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was proposing that, rather than he go and get Mach series, better get Dash, i haf been using dash for the past 4 years and the tips are still 90% good.
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Sep 24 2007, 11:36 PM
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Senior Member
4,234 posts Joined: Nov 2004
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QUOTE(bsl555 @ Sep 24 2007, 02:57 PM) Some advice. Please beware that fumes from soldering is poisonous and breathing them in can cause problems. how much is the Hakko Fume Extractor?Do soldering where there's good ventilation. Hakko have got fume extractor for the purpose..but there's alternative brands at cheaper price can be found. Couldnt find any list price |
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Sep 25 2007, 12:09 AM
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Senior Member
727 posts Joined: Sep 2006
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Finally can connect to the internet....
Yahoo. Waah topic has transformed since i was last here lol. Any soldering iron if well taken care of should last a long time....that is how i feel. Practice when not in use just turn it off. But if you have more funds do invest in a good soldering iron.......remember you pay peanuts you get monkeys. LOL |
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Sep 25 2007, 09:24 AM
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Senior Member
2,475 posts Joined: Nov 2005 From: kopitiam
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QUOTE(kai_rel @ Sep 24 2007, 09:38 PM) hi guys,an old e&e student here. can i join u guys 4 the so called diy n modding stuff. study e&e but my tech skill are low. same. i'm an e&e student too. start from zero. still in the process of learning. but i got some theoretical knowledge as a backup.blown my 20 bux soldering iron last 2 most working on a project for my electronic manufacturing corse. my college lab tech adviseson buying a high power/wattae iron for soldering. whats r u guys opinion on this. empire23's hakko 951 soldering station with multiple tips will cost around rm1.3k at melectron jalan pasar. bargain for cheaper price if paying with cash. This post has been edited by dgrebel: Sep 25 2007, 09:25 AM |
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Sep 25 2007, 01:11 PM
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Senior Member
1,339 posts Joined: Oct 2005
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Anybody interested in this?
6.5 Bench DMM for USD988 only 
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Sep 25 2007, 01:13 PM
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Senior Member
2,475 posts Joined: Nov 2005 From: kopitiam
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QUOTE(grandspy @ Sep 25 2007, 01:11 PM) Anybody interested in this? can it light up an led? 6.5 Bench DMM for USD988 only
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Sep 25 2007, 01:29 PM
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Senior Member
8,046 posts Joined: Jan 2003
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Wah!..you fellas drooling for hi-end gear ah?.. People buy these kind of equipment bearing in mind the use would be fully maximized and the capital outlay will payback in the form of revenue generated from own business in future..otherwise..a mid-priced Sanwa (Fluke too expensive here) would suffice most purpose and intent.
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Sep 25 2007, 01:35 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Hahaha. The wise one has spoken!
BTW, my 'i forgot the brand' DMM already served the basics (volt,ohm and capacitance measurements). I don't need no 6 digit super duper expensive gadget doing the same thing.. unless I am given one, heck, YES! QUOTE(bsl555 @ Sep 25 2007, 01:29 PM) Wah!..you fellas drooling for hi-end gear ah?.. People buy these kind of equipment bearing in mind the use would be fully maximized and the capital outlay will payback in the form of revenue generated from own business in future..otherwise..a mid-priced Sanwa (Fluke too expensive here) would suffice most purpose and intent. |
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Sep 25 2007, 01:41 PM
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Senior Member
8,046 posts Joined: Jan 2003
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QUOTE(jazzy939 @ Sep 25 2007, 01:35 PM) Hahaha. The wise one has spoken! Indeed you're a very practical and prudent fellow too!..also very wise!.. Not to worry..we shall all develop wisdom and prudence as time goes on..bitten here, kena sini sana!..we'll all learn from mistakes..time & again. To others.. take it in your own stride and buy on a "need to" basis.. Thinking of paying out RM1.3k just for a soldering station when with the same money (considering one is just starting off the hobby).. there's LOTS of other tools...in fact very neccessary ones, one can buy for the same amount of $$. Just a fair suggestion.. Hakko soldering iron = RM80 Assortment of pliers, cutters, screwdrivers, wire stripper other hand tools = perhaps RM250-300 (Proskit?) Sanwa CD series digital meter = RM500+..damn good one already. Hakko Solder sucker = RM25 I'd suggest with Proskit hand tools..(for affordable price, easily available and huge range). Please pick the more expensive range which are better quality..(suggested stainless steel models). Tools are NOT meant to be abused. Learn to use the RIGHT TOOL for the right job..no compromise here..and your work shall be towards excellence and the tool will last for ages!.. despite people can say Ahhhh..Proskit..cheap & lousy!.. I think their actual skill or handywork is probably LOUSY!. Never blame the tool..blame the user!.. At Pasar Rd..look out for Vessel (Japan made) screwdrivers..they're priced ok..and EXCELLENT!.. I've had these for 20 years now..still perfect.. Jazzy's suggestion of a DIY 0-30V 2amp DC Power supply.. perhaps somewhere RM180 or less?..soup to nuts.. Should there be spare change..I'd like to suggest one also get, say a clerical office table with drawers to store all the tools and work bits. An electronic work bench should also be lined with an anti static mat. I think office tables can easily be got from used office furniture dealers to save cost. Don't do your electronic works on your existing computer table..too cluttered. Invest in a cheap vice clamp too, and install it on the table..it'll come in very handy. This post has been edited by bsl555: Sep 25 2007, 02:06 PM |
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Sep 25 2007, 07:33 PM
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Senior Member
3,448 posts Joined: Jan 2003 From: Sarawak
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truee truee, however, up until now..
DASH 25W - RM90 Solder Stand - RM10 Sanwa CD800A - RM180 Pliers+Cutters+Tweezer - RM40 Solder Sucker - RM10 That was then..haha! 936 Hakko - RM410 Hakko Sucker - RM25 Fluke 111 - FREE (curi from office) Pliers+Cutters+Tweezer - RM40 Power suplly and all, i just make one when i need one. Also i mount a 9cm dc fan on a bent out wire hanger and it works as my fume extractor extremely well 9though ulgee). No more hangovers from solder fumes tats sad.. |
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Sep 25 2007, 07:38 PM
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Senior Member
2,205 posts Joined: Jan 2003
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Wah sai... need so extreme bor?
Anyway I bought RM20 china-made with tiny tip, with RM5 no brand sucker and RM4 metal stand. LOL.... cut wires using fingernail clips... hahahaha... |
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Sep 25 2007, 07:59 PM
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Senior Member
8,046 posts Joined: Jan 2003
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QUOTE(kapitan @ Sep 25 2007, 07:38 PM) Anyway I bought RM20 china-made with tiny tip, with RM5 no brand sucker and RM4 metal stand. LOL.... cut wires using fingernail clips... hahahaha... I think (for beginners or whatever)..spend on a reputable quality soldering iron and stand with wet sponge counts most...the rest entirely up to you. Continuosly develop and improve one's soldering skills to perfection..then move on to better equipment IF very neccessary and want to continue the hobby to higher levels. |
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Sep 25 2007, 08:34 PM
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Senior Member
727 posts Joined: Sep 2006
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I totally agree with you bro....all you need is what is said above. The rest is not really needed. Oh yeah a digital multimeter too would be helpful.....other than this that about it
And loads of patience and skills (steady hands). |
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Sep 25 2007, 09:44 PM
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Senior Member
2,475 posts Joined: Nov 2005 From: kopitiam
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shy to post mine.
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Sep 25 2007, 10:18 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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I truely agree!
I started with a 'cheapo' RM6 made in china iron but save up to buy an ANTEX, made in england 25 watt iron that last me for quite sometime until my 'lil brother picks up the hobby and damage that iron. The ANTEX is still available in JP going for RM55, which I think is a good buy. Yes.. developing the right and proper skills is important and will take time. Quoting the wise one, "use proper tool for the specific job". Do it right the first time, every time and ALL the time. Above all, SAFETY FIRST! Enuff said... QUOTE(bsl555 @ Sep 25 2007, 07:59 PM) I think (for beginners or whatever)..spend on a reputable quality soldering iron and stand with wet sponge counts most...the rest entirely up to you. Continuosly develop and improve one's soldering skills to perfection..then move on to better equipment IF very neccessary and want to continue the hobby to higher levels. |
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Sep 26 2007, 12:08 AM
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Senior Member
727 posts Joined: Sep 2006
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Totally agree with the sifu's
Great minds think alike bros |
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Sep 26 2007, 12:14 AM
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Senior Member
1,324 posts Joined: Jan 2003 From: Kepong
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I really hate removing SOIC. Impossible for me.
I tried for almost an hour without success. In the end, I just get a screwdriver and peel all the legs broken, then use a sucker to suck out everything thats left. Soldering it is a lot easier by using blue tag to make it stick to the board and then solder one side, remove tag and solder the other end. *Shit, Im Kapitan anyway... loggin from my bro pc... This post has been edited by Darren: Sep 26 2007, 12:14 AM |
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Sep 26 2007, 12:25 AM
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Senior Member
727 posts Joined: Sep 2006
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Kapitan in disguise LOL!!!! Notty notty
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Sep 26 2007, 01:19 AM
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Senior Member
2,475 posts Joined: Nov 2005 From: kopitiam
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QUOTE(Darren @ Sep 26 2007, 12:14 AM) I really hate removing SOIC. Impossible for me. aah la.. if theres a custom card board with holes of the size of the connection at the pcb, my soldering work shall be more neat. lol.I tried for almost an hour without success. In the end, I just get a screwdriver and peel all the legs broken, then use a sucker to suck out everything thats left. Soldering it is a lot easier by using blue tag to make it stick to the board and then solder one side, remove tag and solder the other end. *Shit, Im Kapitan anyway... loggin from my bro pc... |
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Sep 26 2007, 01:57 AM
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Senior Member
727 posts Joined: Sep 2006
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dgrebel.....keep on with practise and you will later master the skill. Tak caya ask your sifu Jazzy:P Patience pays bro
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Oct 2 2007, 07:46 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Is this thread dead or what?
Just a 'survey' here. How many newbies here interested to build a portable headphone amp that cost around RM20?Maybe less. It'll be a value for money/highest bang for buck device.. Just to help spread the hobby.. This post has been edited by jazzy939: Oct 2 2007, 07:47 PM |
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Oct 2 2007, 07:49 PM
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Senior Member
2,475 posts Joined: Nov 2005 From: kopitiam
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QUOTE(jazzy939 @ Oct 2 2007, 07:46 PM) Is this thread dead or what? eh.. totally! the one u printed and show to me at McD rite? anything after my last exam this sunday.Just a 'survey' here. How many newbies here interested to build a portable headphone amp that cost around RM20?Maybe less. It'll be a value for money/highest bang for buck device.. Just to help spread the hobby.. |
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Oct 2 2007, 08:02 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Yup! Thats the one!
Okdokie., good luck in your exam dude! QUOTE(dgrebel @ Oct 2 2007, 07:49 PM) eh.. totally! the one u printed and show to me at McD rite? anything after my last exam this sunday. |
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Oct 2 2007, 08:38 PM
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Senior Member
2,475 posts Joined: Nov 2005 From: kopitiam
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QUOTE(jazzy939 @ Oct 2 2007, 08:02 PM) Yup! Thats the one! May your prayers be with me. amin!Okdokie., good luck in your exam dude! |
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Oct 2 2007, 09:22 PM
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Senior Member
727 posts Joined: Sep 2006
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Inshallah you will do fine.......dgrebel
Break a leg...."good luck" |
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Oct 2 2007, 09:29 PM
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Senior Member
3,448 posts Joined: Jan 2003 From: Sarawak
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In regards to other thread here which i cannot directly interfere..but sicne questions were asked..
» Click to show Spoiler - click again to hide... « |
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Oct 2 2007, 10:13 PM
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Senior Member
2,475 posts Joined: Nov 2005 From: kopitiam
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QUOTE(ijan @ Oct 2 2007, 09:29 PM) In regards to other thread here which i cannot directly interfere..but sicne questions were asked.. i understand the part about hysterisis and eddy current. and many other losses considering the material itself. ok, now, trying to interprete and implement it within the audiophile knowledge. lol.» Click to show Spoiler - click again to hide... « |
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Oct 3 2007, 06:19 AM
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Senior Member
727 posts Joined: Sep 2006
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What language are you guys speaking???? Lol.....j'king
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Oct 8 2007, 12:17 AM
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Senior Member
1,339 posts Joined: Oct 2005
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QUOTE(jazzy939 @ Oct 2 2007, 07:46 PM) Is this thread dead or what? So how many newbies have enrolled in your class? Seriously this is an opportunity not to be missed!Just a 'survey' here. How many newbies here interested to build a portable headphone amp that cost around RM20?Maybe less. It'll be a value for money/highest bang for buck device.. Just to help spread the hobby.. |
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Oct 8 2007, 04:59 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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only two...
QUOTE(grandspy @ Oct 8 2007, 12:17 AM) So how many newbies have enrolled in your class? Seriously this is an opportunity not to be missed! This post has been edited by jazzy939: Oct 8 2007, 05:00 AM |
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Oct 8 2007, 10:05 AM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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QUOTE(jazzy939 @ Oct 8 2007, 04:59 AM) only two... You left me out....I enrolled, but always ponteng class. Not yet started on my first project (PSU) somemore. |
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Oct 8 2007, 10:34 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Alamak! see what happened when you ponteng class? HAHAHA..
OK, its THREE! QUOTE(March05 @ Oct 8 2007, 10:05 AM) You left me out....I enrolled, but always ponteng class. Not yet started on my first project (PSU) somemore. |
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Oct 8 2007, 12:04 PM
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Senior Member
727 posts Joined: Sep 2006
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Come la and join his class.....the more the merrier ma:P Just as long as every week.....someone else belanja minum lor. Cannot always be the same person.
Who the 3 in class??? |
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Oct 13 2007, 11:38 PM
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Senior Member
546 posts Joined: Jan 2003 From: Penang, Malaysia
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QUOTE(MadZiZ @ Oct 8 2007, 01:04 PM) Come la and join his class.....the more the merrier ma:P Just as long as every week.....someone else belanja minum lor. Cannot always be the same person. Formal classes or informal ones? Who the 3 in class???Too bad i'm way up in the north In fact a DIY speaker set bought some time ago still lying dusting in my closet. No time to assemble yet. Well the main thing i think is to find someone with same kind of avid interest to start the ball rolling Anyone u guys know in the northern region DIY fans? Thanks! |
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Oct 14 2007, 09:44 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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It was never intended as a formal class.Formal class must pay formal fees
It is just a sit down at the 'mamak' for a TT session and talk about the DIY progress and related electronics stuffs..Thats about it.. done purely for the fun of the hobby. |
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Oct 14 2007, 05:53 PM
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Senior Member
546 posts Joined: Jan 2003 From: Penang, Malaysia
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QUOTE(jazzy939 @ Oct 14 2007, 10:44 AM) It was never intended as a formal class.Formal class must pay formal fees That's exactly the kind of gang I'm looking for! It is just a sit down at the 'mamak' for a TT session and talk about the DIY progress and related electronics stuffs..Thats about it.. done purely for the fun of the hobby. Any of u all planning to move to the north in any near future..hehe |
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Oct 15 2007, 12:30 AM
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Senior Member
3,448 posts Joined: Jan 2003 From: Sarawak
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im alone down here where im at..haha!
FYI..theres no MAMAK stall where i am, hehe! |
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Oct 15 2007, 02:03 PM
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Senior Member
727 posts Joined: Sep 2006
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Haha dun try steal my teacher from KL please. LOL
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Oct 15 2007, 02:38 PM
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Senior Member
546 posts Joined: Jan 2003 From: Penang, Malaysia
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QUOTE(MadZiZ @ Oct 15 2007, 03:03 PM) Haha dun try steal my teacher from KL please. LOL Ok ok my bad:P Got chance can meet up. Kopi 'o my treat |
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Oct 15 2007, 05:58 PM
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Senior Member
1,339 posts Joined: Oct 2005
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QUOTE(jazzy939 @ Oct 14 2007, 09:44 AM) It was never intended as a formal class.Formal class must pay formal fees So when is the next class? It is just a sit down at the 'mamak' for a TT session and talk about the DIY progress and related electronics stuffs..Thats about it.. done purely for the fun of the hobby. QUOTE(ijan @ Oct 15 2007, 12:30 AM) im alone down here where im at..haha! True. There's no mamak stall in Sarawak.. only starbucks, SFC and coffee beans. Such a high class city FYI..theres no MAMAK stall where i am, hehe! |
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Oct 15 2007, 09:20 PM
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Senior Member
727 posts Joined: Sep 2006
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skma sure if your in P.J. area sure just give Jazzy and i a shout. Should be always free to go for coffee at mamak.....we here in KL not so upclass like in Sarawak
LOL. Sure my sifu willing to chat and teach.....rite sifu??? |
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Oct 15 2007, 10:28 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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sure thing we're all in it just for the fun of it... dun we all?
and sharing is fun too..! |
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Oct 16 2007, 01:50 PM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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How about a class when the iBasso arrives? yuheng indicates quite likely this weekend can COD, so maybe on Sunday in Sunway?
Meanwhile, I'll try to finish my PSU project over the next couple of days so sifu jazzy can check and criticize my handiwork........ I still can't figure out what this smilie means. |
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Oct 16 2007, 06:17 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Sounds like a terribly good proposal! I second the motion!
ahhh the iBasso... lama sangat tunggu.. sekarang dah 'sejuk' dah.... Yeah.. what does this actually mean?  QUOTE(March05 @ Oct 16 2007, 01:50 PM) How about a class when the iBasso arrives? yuheng indicates quite likely this weekend can COD, so maybe on Sunday in Sunway? This post has been edited by jazzy939: Oct 16 2007, 06:18 PM Meanwhile, I'll try to finish my PSU project over the next couple of days so sifu jazzy can check and criticize my handiwork........ I still can't figure out what this smilie means. |
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Oct 16 2007, 07:43 PM
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Senior Member
2,753 posts Joined: Jul 2006 From: Metropolitan College(KL) or JB Johor Bahru
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QUOTE(March05 @ Oct 16 2007, 01:50 PM) How about a class when the iBasso arrives? yuheng indicates quite likely this weekend can COD, so maybe on Sunday in Sunway? i m just waiting custom reaction now Meanwhile, I'll try to finish my PSU project over the next couple of days so sifu jazzy can check and criticize my handiwork........ I still can't figure out what this smilie means.should be able to COD this weekend , i would think it is like :i canot listen, i dont care |
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Oct 16 2007, 08:07 PM
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Senior Member
546 posts Joined: Jan 2003 From: Penang, Malaysia
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QUOTE(March05 @ Oct 16 2007, 02:50 PM) I still can't figure out what this smilie It means the headphones are booming with delightful sounds means. |
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Oct 16 2007, 08:30 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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What about...
I can't hear you.. I am wearing/listening to my super-duper headphones.. make that noise cancelling! QUOTE(skma @ Oct 16 2007, 08:07 PM) It means the headphones are booming with delightful sounds This post has been edited by jazzy939: Oct 16 2007, 08:31 PM |
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Oct 17 2007, 01:17 AM
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Senior Member
727 posts Joined: Sep 2006
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Haha yes me too i prefer listening to noise canceling headphones like my Bose QC2......
After recabled by PCWork.....wow impressive |
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Oct 17 2007, 02:39 AM
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Senior Member
5,211 posts Joined: Feb 2005 From: Konohana
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QUOTE(MadZiZ @ Oct 17 2007, 01:17 AM) Haha yes me too i prefer listening to noise canceling headphones like my Bose QC2...... Lolz, but I agree though After recabled by PCWork.....wow impressive |
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Oct 17 2007, 10:25 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Fresh item required here..
About 15 years ago, I built this 'stereo FM transmitter' so that I can play my Discman in the car.. The KIT was bought in Australia ("DIICK SMITH") and costs AUD40. Definitely sounded better than the normal current FM transmitter for the iPod/DAP. Never had a case for it .. Just found it while cleaning up the house for Raya.. should be still working, will test later.Edit: Had to spell "DIICK" coz when spelled with single "I" only asterisks shown.. sensorship huh? Here is the pix.. This post has been edited by jazzy939: Oct 17 2007, 10:27 AM |
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Oct 17 2007, 04:44 PM
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Senior Member
727 posts Joined: Sep 2006
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Wow impressive....what else can you find when cleaning? Haha got spare amp??? LOL. If got i wanna buy lol
Haha. |
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Oct 17 2007, 07:59 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Spare amp like 'spare tyre' in the car? Sorry, don't have ler... only have backup amp
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Oct 17 2007, 09:35 PM
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Senior Member
1,339 posts Joined: Oct 2005
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QUOTE(jazzy939 @ Oct 17 2007, 10:25 AM) Fresh item required here.. Nice one Jazzy!About 15 years ago, I built this 'stereo FM transmitter' so that I can play my Discman in the car.. The KIT was bought in Australia ("DIICK SMITH") and costs AUD40. Definitely sounded better than the normal current FM transmitter for the iPod/DAP. Never had a case for it .. Just found it while cleaning up the house for Raya.. should be still working, will test later.Edit: Had to spell "DIICK" coz when spelled with single "I" only asterisks shown.. sensorship huh? Here is the pix.. BTW, I'll start my DIY PSU project next week. Right now finalising the materials |
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Oct 17 2007, 09:59 PM
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Senior Member
3,448 posts Joined: Jan 2003 From: Sarawak
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makes me wonder...how senior is uncle jazzy? back 15 years ago, i wonder how was the diy community around..toob toob toob i guess..
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Oct 17 2007, 10:37 PM
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Senior Member
8,046 posts Joined: Jan 2003
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QUOTE(ijan @ Oct 17 2007, 09:59 PM) i wonder how was the diy community around..toob toob toob i guess.. 15 years ago was certainly not toobs, toobs..they were already dead meat.And no telling what sort of diy community.. mana ada internet at that time to brag or discuss things?..perhaps to each his own. |
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Oct 17 2007, 10:48 PM
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Senior Member
3,448 posts Joined: Jan 2003 From: Sarawak
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ya...true also..no internet...god bless internet!
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Oct 17 2007, 11:45 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Alooo , me uncle? bsl555 is uncle la.. me still 'bro'
Like 'unka' bsl mentioned.. where got internet? where got communities like this.. you're on your own... and I started really young... in the 'cradle' hahahahaha..  QUOTE(ijan @ Oct 17 2007, 09:59 PM) makes me wonder...how senior is uncle jazzy? back 15 years ago, i wonder how was the diy community around..toob toob toob i guess.. |
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Oct 18 2007, 12:01 AM
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Senior Member
1,599 posts Joined: Jan 2003 From: Isketambola
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QUOTE(bsl555 @ Oct 17 2007, 10:37 PM) 15 years ago was certainly not toobs, toobs..they were already dead meat. And no telling what sort of diy community.. mana ada internet at that time to brag or discuss things?..perhaps to each his own. QUOTE(ijan @ Oct 17 2007, 10:48 PM) ya...true also..no internet...god bless internet! If I had internet 15 years ago, I would post pics of my awesome Lego contraptions.I'd love to post them now. Damn small children other than myself. |
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Oct 18 2007, 12:03 AM
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Senior Member
4,234 posts Joined: Nov 2004
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QUOTE(ijan @ Oct 17 2007, 10:48 PM) ya...true also..no internet...god bless internet! you should go over to amb's personal page. Man that guy's awesome. Started this whole diy thing since high school. He's not exactly young now either, so i suspect he's as old as Jazzy or perhaps even march himself. |
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Oct 18 2007, 12:08 AM
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Senior Member
727 posts Joined: Sep 2006
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Waah that is old ma....lol no offense to you oldies out there
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Oct 18 2007, 12:39 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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None taken... you're gettin'old too
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Oct 18 2007, 12:54 AM
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Senior Member
727 posts Joined: Sep 2006
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Haha thanks for the reminder LOL
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Oct 19 2007, 03:46 PM
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Senior Member
546 posts Joined: Jan 2003 From: Penang, Malaysia
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Wow the DIY gang all oldies one ah? Me also quite old already
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Oct 19 2007, 07:12 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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What do you mean 'oldies'? Sounds like an 'old hits'..
We're SENIORS.. k QUOTE(skma @ Oct 19 2007, 03:46 PM) Wow the DIY gang all oldies one ah? Me also quite old already |
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Oct 19 2007, 07:25 PM
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Senior Member
8,046 posts Joined: Jan 2003
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Oh well, seniors will have acquired lots of experience..been there..done that. Of course there's some who have just started out.. no problem..acquiring knowledge is never ending.
Dunno lah!..some think as if Low Yat Net is for young people only?.. certainly not!...Grandpa can be forum member too mar!..as long as PC savvy!.. My eldest brother started surfing internet only when he retired!.. |
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Oct 20 2007, 02:47 AM
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Senior Member
727 posts Joined: Sep 2006
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No discrimination of age la.....hehe i personally appreciate the much experienced advices because i know they have been through the in's and out's and have gathered knowledge that some younger ones can't or haven't ascertained yet. Age is just a number ma. By the way bsl555....much appreciated for your effort in trying to help me with you know what problem la
I owe you one |
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Oct 20 2007, 02:58 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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.. and some of the experiences,the youngsters MAY never get...
QUOTE(MadZiZ @ Oct 20 2007, 02:47 AM) No discrimination of age la.....hehe i personally appreciate the much experienced advices because i know they have been through the in's and out's and have gathered knowledge that some younger ones can't or haven't ascertained yet. Age is just a number ma. By the way bsl555....much appreciated for your effort in trying to help me with you know what problem la I owe you one |
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Oct 20 2007, 03:01 AM
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Senior Member
727 posts Joined: Sep 2006
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Yeah yeah that i have to admit:P LOL
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Oct 20 2007, 09:59 AM
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Senior Member
546 posts Joined: Jan 2003 From: Penang, Malaysia
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QUOTE(jazzy939 @ Oct 19 2007, 08:12 PM) What do you mean 'oldies'? Sounds like an 'old hits'.. Okdokey wrong term. We're seniors We're SENIORS.. k |
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Oct 20 2007, 10:41 AM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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QUOTE(skma @ Oct 20 2007, 09:59 AM) We're seniors Seniors? Not much better......go to the bank, join the senior citizens counter, you'll get what I mean. All those ppl looking with pity on you......However, I wouldn't mind being called an evergreen (old, but always a hit). No problem with telling it like it is. |
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Oct 20 2007, 10:57 AM
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Senior Member
727 posts Joined: Sep 2006
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Seniors.....glamour name aka ala "Old Tai's" la. Hihi LOL
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Oct 20 2007, 10:59 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Just completed another PSU, this time for a GoVibe6, 24V unit.
  Have modified the RED LED to GREEN LED to match the GV6 This post has been edited by jazzy939: Oct 20 2007, 11:01 PM |
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Oct 20 2007, 11:03 PM
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Senior Member
8,046 posts Joined: Jan 2003
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You should have got a bridge rectifier block rather than 4 diodes.
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Oct 20 2007, 11:12 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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I know! But it was raining heavily.. malas nak pergi Jalan Pasar.. have to settle with 4 diodes
I thought have few bridge rectifiers lying around, tapi sudah habis... QUOTE(bsl555 @ Oct 20 2007, 11:03 PM) You should have got a bridge rectifier block rather than 4 diodes. This post has been edited by jazzy939: Oct 20 2007, 11:25 PM |
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Oct 20 2007, 11:30 PM
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Senior Member
4,234 posts Joined: Nov 2004
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still have some more board space, why not put bypass ceramics on your diodes? Stock up some moar capacitance and caps for lower ESR and better ripple suppression
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Oct 20 2007, 11:59 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Yep agree but the requirements is not that 'strict'...
I'll talk to the end user if he wants an 'enhanced' version QUOTE(LittleGhost @ Oct 20 2007, 11:30 PM) still have some more board space, why not put bypass ceramics on your diodes? Stock up some moar capacitance and caps for lower ESR and better ripple suppression |
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Oct 21 2007, 12:04 AM
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Senior Member
8,046 posts Joined: Jan 2003
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QUOTE(jazzy939 @ Oct 20 2007, 11:12 PM) I know! But it was raining heavily.. malas nak pergi Jalan Pasar.. have to settle with 4 diodes Actually you can more or less get one for "free" from busted PC PSU's. I thought have few bridge rectifiers lying around, tapi sudah habis... E.K.K. tranny?.. Electric Kena Kelentong!??? This post has been edited by bsl555: Oct 21 2007, 12:05 AM |
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Oct 21 2007, 12:08 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Don't have busted PC PSU
Hahaha.. funny EKK.. This post has been edited by jazzy939: Oct 21 2007, 12:08 AM |
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Oct 21 2007, 12:12 AM
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Senior Member
8,046 posts Joined: Jan 2003
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QUOTE(jazzy939 @ Oct 21 2007, 12:08 AM) Don't have busted PC PSU Computer shop..sure got some lying around lah.. afterall its more expensive to repair than new one.. comes in useful for parts once a while.Hahaha.. funny EKK.. |
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Oct 21 2007, 12:13 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Thanks for the 'tip'..
Thats why you're the 'senior' mahh. |
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Oct 21 2007, 12:27 AM
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Senior Member
8,046 posts Joined: Jan 2003
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Hehehe..this is tip of iceberg.. I got access to HUGE HUGE industrial PSU's.. many are discarded items.. mind boggling trannys, caps and rectifiers..just too lazy to acquire them. My family will scream seeing too many JUNK in the home.
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Oct 21 2007, 12:31 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Whoa.. sitting on a 'gold mine' huh?
Same here.. 'too much junk' is what the missus is complaining... That's why I had to 'throw' the MISSION.. QUOTE(bsl555 @ Oct 21 2007, 12:27 AM) Hehehe..this is tip of iceberg.. I got access to HUGE HUGE industrial PSU's.. many are discarded items.. mind boggling trannys, caps and rectifiers..just too lazy to acquire them. My family will scream seeing too many JUNK in the home. |
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Oct 21 2007, 01:01 AM
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Senior Member
8,046 posts Joined: Jan 2003
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Come to think of it..I think I need to buy a proper dual tracking PSU..soon!.
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Oct 21 2007, 01:03 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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'Buy'? hmmm how much would an average one costs?
QUOTE(bsl555 @ Oct 21 2007, 01:01 AM) Come to think of it..I think I need to buy a proper dual tracking PSU..soon!. |
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Oct 21 2007, 01:05 AM
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Senior Member
8,046 posts Joined: Jan 2003
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QUOTE(jazzy939 @ Oct 21 2007, 01:03 AM) 'Buy'? hmmm how much would an average one costs? About RM800+ (dealer pricing)..a good one made by Instek..which I've got jalan to get. It costs more outside. |
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Oct 21 2007, 01:22 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Instek eh? I am definitely NOT familiar with the name.. will find out
RM800+ is a good price.. saw some in Jalan Pasar, can't remember the names though.. 4 digits pricing.. saw one at Nixie.. RM1200. QUOTE(bsl555 @ Oct 21 2007, 01:05 AM) About RM800+ (dealer pricing)..a good one made by Instek..which I've got jalan to get. It costs more outside. |
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Oct 21 2007, 01:27 AM
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Senior Member
8,046 posts Joined: Jan 2003
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QUOTE(jazzy939 @ Oct 21 2007, 01:22 AM) Instek eh? I am definitely NOT familiar with the name.. will find out Instek is quite a good brand..which also OEM for others. Instek or its variants are frequently sold to local factories. Of course Tektronix, Agilent, HP or Fluke will be sought after by American factories..support own countryman's produce mah!.. RM800+ is a good price.. saw some in Jalan Pasar, can't remember the names though.. 4 digits pricing.. saw one at Nixie.. RM1200. Nixie ones are all China made.. a bit dodgy there. Price can discount one!.. |
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Oct 21 2007, 02:10 AM
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Senior Member
1,339 posts Joined: Oct 2005
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I've got 2 Instek GW series (discontinued) power supplies. After 5 years, they're still running strong.
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Oct 21 2007, 02:15 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Good for you!
After this can masuk 'old school' stuffs thread QUOTE(grandspy @ Oct 21 2007, 02:10 AM) I've got 2 Instek GW series (discontinued) power supplies. After 5 years, they're still running strong. |
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Oct 21 2007, 02:25 AM
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Senior Member
8,046 posts Joined: Jan 2003
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Benchtop PSU's seldom fail, unless its frequently abused, improper use and short circuited for whatever reason.
People here don't look after company equipment.. why?.. attitudes.. people seldom change!..period. The distributor once demoed to me hooking up to a HUGE resistor load at its maximum current for couple of minutes..It withstood the test without a hitch. This post has been edited by bsl555: Oct 21 2007, 02:36 AM |
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Oct 21 2007, 05:23 AM
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Senior Member
727 posts Joined: Sep 2006
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These are the big PSU??? Like the one near your left speakers isit bsl555?
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Oct 21 2007, 12:35 PM
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Senior Member
1,339 posts Joined: Oct 2005
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QUOTE(jazzy939 @ Oct 21 2007, 02:15 AM) Good for you! Whoa... only 5 years sudah kira 'old stuff' ka? After this can masuk 'old school' stuffs thread |
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Oct 21 2007, 12:42 PM
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Senior Member
8,046 posts Joined: Jan 2003
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QUOTE(MadZiZ @ Oct 21 2007, 05:23 AM) These are the big PSU??? Like the one near your left speakers isit bsl555? Thats a AVR..5KVA capacity..was actually for office PC's..but its been tweaked and modded. I can't do without it..its so neccessary for my purpose. |
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Oct 21 2007, 12:49 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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No, you gotta wait another 5 years.. hahahaha
QUOTE(grandspy @ Oct 21 2007, 12:35 PM) Whoa... only 5 years sudah kira 'old stuff' ka? |
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Oct 21 2007, 04:45 PM
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Senior Member
727 posts Joined: Sep 2006
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Haha patience is a virtue la.....
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Oct 21 2007, 08:53 PM
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Senior Member
8,046 posts Joined: Jan 2003
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QUOTE(MadZiZ @ Oct 21 2007, 04:45 PM) Haha patience is a virtue la..... Never mind..you're still young and can develop or exercise your patience. Say, if you ask me where I stand from political viewpoint... my patience run out long time ago.. virtue or not doesn't matter!  |
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Oct 22 2007, 01:02 AM
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Senior Member
727 posts Joined: Sep 2006
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Shhhhh i have that same opinion too believe me. Disgruntled is the word. But i was refering to our DIY and audiophile hobby LOL
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Oct 22 2007, 10:28 AM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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QUOTE(MadZiZ @ Oct 22 2007, 01:02 AM) But i was refering to our DIY and audiophile hobby LOL I think there is no such thing as patience when it comes to hobbies. It is only when you can unstick the activity from a fanatical hobby level and get back to `facing reality' status, that patience can exist. |
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Oct 24 2007, 08:57 PM
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Senior Member
727 posts Joined: Sep 2006
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LOL you have a point there but how we are regulated is by $$$$'s and this is usually when we hit 'facing reality'.......of go out of budget
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Oct 25 2007, 04:27 AM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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QUOTE(MadZiZ @ Oct 24 2007, 08:57 PM) LOL you have a point there but how we are regulated is by $$$$'s and this is usually when we hit 'facing reality'.......of go out of budget Right, in retrospect, we acquire patience when our wallets run out of juice. I see very little patience in this forum. That tells me there are plenty of well heeled forumers here. |
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Oct 25 2007, 09:15 AM
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Senior Member
727 posts Joined: Sep 2006
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Lol...i would have to agree or realization hits them that you can enhance the hobby to a new level. Likewise, i moved out from headphones nirana to hifi nirvana because i wanted to share my love for music with my wife. It is not so when she has one headphone on and i have one too, why be so aloof when sharing is caring
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Oct 25 2007, 10:16 AM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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QUOTE(MadZiZ @ Oct 25 2007, 09:15 AM) Likewise, i moved out from headphones nirana to hifi nirvana because i wanted to share my love for music with my wife. Unfortunately, a lot of budding audiophiles here have not yet had the benefit of our experience. Hence, they still listen to music in isolation.... But we (hitched ones) have advanced to the higher plane of musical nirvana in unisonance. This is double the enjoyment for the price of one. BTW back to your thread topic, what DIY project are you working on now? My PSU is almost done. I'll need jazzy to check it out next week before I attempt to power it up. And where is dear dgrebel? Stuck in the midst of exams ah? poor chap. |
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Oct 25 2007, 11:03 AM
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Senior Member
727 posts Joined: Sep 2006
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Yes Jazzy also did one PSU last week, saw it while i was at his house
He should be back from his trip by today i think? But next week is surely on Added on October 25, 2007, 8:05 pmEarth to Jazzy??? Earth to Jazzy??? Where are you???? LOL This post has been edited by MadZiZ: Oct 25 2007, 08:05 PM |
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Oct 25 2007, 08:34 PM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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QUOTE(MadZiZ @ Oct 25 2007, 11:03 AM) Earth to Jazzy??? Earth to Jazzy??? Where are you???? LOL Didn't you hear? He went to take over our Angkasawan's place in the ISS. He will be running an experiment on how to prevent cold solder joints in a gravity free environment. |
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Oct 25 2007, 09:17 PM
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Senior Member
2,865 posts Joined: Jan 2003
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QUOTE(MadZiZ @ Oct 25 2007, 11:03 AM) Yes Jazzy also did one PSU last week, saw it while i was at his house aik...Jc outstation ka? no wonder la...waiting for my PSU ...kekeke.. He should be back from his trip by today i think? But next week is surely on Added on October 25, 2007, 8:05 pmEarth to Jazzy??? Earth to Jazzy??? Where are you???? LOL I also send him a package..dunno got people collect on his behalf or not.. |
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Oct 26 2007, 12:08 AM
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Senior Member
727 posts Joined: Sep 2006
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Him that one i donno la we have to wait till he returns LOL.
He now enjoying himself, lol shopping i can imagine |
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Oct 27 2007, 09:07 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Hehehe.. I like it!
Only if its true! Ok.. what do we wanna do here/next? Two PSUs to look at. MArch05 & dgrebel.. MadZiZ still have a little bit more on the 9V PSU. I think the transformer and AC rectification part. Amplifiers. Anyone wanna do that? QUOTE(March05 @ Oct 25 2007, 08:34 PM) Didn't you hear? He went to take over our Angkasawan's place in the ISS. He will be running an experiment on how to prevent cold solder joints in a gravity free environment. This post has been edited by jazzy939: Oct 27 2007, 09:08 AM |
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Oct 27 2007, 10:39 AM
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Senior Member
727 posts Joined: Sep 2006
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Yea Jazzy is finally back from space huh? LOL
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Oct 28 2007, 01:41 AM
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Junior Member
469 posts Joined: Aug 2005 From: Indigo Aurora Nutrition 
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hi guys,
I'm building a PPAv2 now, to all power supply expert here, which power supply should work well with PPAv2? I'm trying to build 1 which is inexpensive? how much would a STEPS cost?? my budget is well in the range of <RM100 thanks |
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Oct 28 2007, 03:31 AM
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Senior Member
2,475 posts Joined: Nov 2005 From: kopitiam
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anything after 10th november. coz i have to ready for my chess tournament. and still need to buy a driller and a casing.
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Oct 28 2007, 09:36 AM
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Senior Member
4,234 posts Joined: Nov 2004
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QUOTE(Enferno @ Oct 28 2007, 01:41 AM) hi guys, <Rm100 you'll get a good TREAD i assume. Just stock up on huge caps. The only difference between the TREAD and STEPS is the pre line choke filter anyway.I'm building a PPAv2 now, to all power supply expert here, which power supply should work well with PPAv2? I'm trying to build 1 which is inexpensive? how much would a STEPS cost?? my budget is well in the range of <RM100 thanks |
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Oct 28 2007, 12:33 PM
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Senior Member
3,448 posts Joined: Jan 2003 From: Sarawak
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..that will only help in speedy ac spike in the electrical line. And also, STEPS has a small line conditioner at the input, the capacitors at LIFE-EARTH and NEUTRAL-EARTH.
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Oct 28 2007, 12:41 PM
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Senior Member
8,046 posts Joined: Jan 2003
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QUOTE(ijan @ Oct 28 2007, 12:33 PM) ..that will only help in speedy ac spike in the electrical line. And also, STEPS has a small line conditioner at the input, the capacitors at LIFE-EARTH and NEUTRAL-EARTH. Easier method, just buy an IEC mains socket with built-in mains noise suppression filters. Not good to clutter the amplification board or anything associated with AC noise suppression circuitry.Manufacturers use various methods of isolating AC noise by shielding or sectioning them off and well away from the main amplification stages. |
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Oct 28 2007, 01:11 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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IEC socket with mains suppression filter. Yep, I'll go with that too!
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Oct 28 2007, 01:15 PM
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Senior Member
8,046 posts Joined: Jan 2003
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QUOTE(jazzy939 @ Oct 28 2007, 01:11 PM) IEC socket with mains suppression filter. Yep, I'll go with that too! But NOT good with CD players...have to use with caution..as it affects the resultant sound ...so some seem to say... |
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Oct 28 2007, 01:18 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Yes. I have heard that too! Have NOT seen any upmarket CDP with that type of IEC sockets...
QUOTE(bsl555 @ Oct 28 2007, 01:15 PM) But NOT good with CD players...have to use with caution..as it affects the resultant sound ...so some seem to say... |
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Nov 3 2007, 10:57 AM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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I'm looking for a portable USB multimeter which can display and log realtime parameters such as voltage and current. Any suggestions? Is it possible to DIY one?
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Nov 3 2007, 11:21 AM
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Senior Member
941 posts Joined: Nov 2005
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QUOTE(jazzy939 @ Oct 28 2007, 01:11 PM) IEC socket with mains suppression filter. Yep, I'll go with that too! I found those socket at JP, around RM40 each.QUOTE(bsl555 @ Oct 28 2007, 01:15 PM) But NOT good with CD players...have to use with caution..as it affects the resultant sound ...so some seem to say... How would the filter affect the sound of CDP? |
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Nov 3 2007, 12:27 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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This must have something to do with the iBasso 'problem' huh?
QUOTE(March05 @ Nov 3 2007, 10:57 AM) I'm looking for a portable USB multimeter which can display and log realtime parameters such as voltage and current. Any suggestions? Is it possible to DIY one? |
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Nov 3 2007, 06:15 PM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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QUOTE(jazzy939 @ Nov 3 2007, 12:27 PM) This must have something to do with the iBasso 'problem' huh? I've got some equipment where I need to monitor the load on the motors over a run of six-seven hours. Don't want to sit and watch the voltmeter and ampmeter for irregularities. If I can log it in the pc, then I can just call up the statistics and easily see any deviations from norm.I reckon I can also use it with the completed PSU kit. Who says I got a problem with my iBasso?  |
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Nov 3 2007, 09:36 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Ok, you need a data logger. Let me see what I can do but no promises k..
How's the iBasso coming along? My iBasso I let it 'go' QUOTE(March05 @ Nov 3 2007, 06:15 PM) I've got some equipment where I need to monitor the load on the motors over a run of six-seven hours. Don't want to sit and watch the voltmeter and ampmeter for irregularities. If I can log it in the pc, then I can just call up the statistics and easily see any deviations from norm. I reckon I can also use it with the completed PSU kit. Who says I got a problem with my iBasso? |
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Nov 3 2007, 10:09 PM
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Senior Member
2,475 posts Joined: Nov 2005 From: kopitiam
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data logger? hehe.. fluke 189 la... but sadly, it doesnt use usb, but the old parallel port
btw, jazzy, it can measure capacitance la.. i'm just new to it.. baru2 baca skali tengok eh boleh pulak. huhu.. This post has been edited by dgrebel: Nov 3 2007, 10:10 PM |
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Nov 3 2007, 10:11 PM
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Senior Member
1,339 posts Joined: Oct 2005
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QUOTE(March05 @ Nov 3 2007, 10:57 AM) I'm looking for a portable USB multimeter which can display and log realtime parameters such as voltage and current. Any suggestions? Is it possible to DIY one? Try Agilent U1252A DMM. |
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Nov 3 2007, 11:11 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Hmm great DMM having a base price of USD429 depending on options.. .
QUOTE(grandspy @ Nov 3 2007, 10:11 PM) Try Agilent U1252A DMM. Added on November 3, 2007, 11:13 pmold parallel port? hahaha boleh kira 'old skool' stuffs this one! what can measure capacitance? the fluke 189? well it better! My 'elcheapo' also can do it QUOTE(dgrebel @ Nov 3 2007, 10:09 PM) data logger? hehe.. fluke 189 la... but sadly, it doesnt use usb, but the old parallel port This post has been edited by jazzy939: Nov 3 2007, 11:13 PMbtw, jazzy, it can measure capacitance la.. i'm just new to it.. baru2 baca skali tengok eh boleh pulak. huhu.. |
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Nov 3 2007, 11:39 PM
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Senior Member
1,339 posts Joined: Oct 2005
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QUOTE(jazzy939 @ Nov 3 2007, 11:11 PM) Hmm great DMM having a base price of USD429 depending on options.. . Let's do bulk purchase. The price should go much lower |
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Nov 4 2007, 02:02 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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yeah right! how low would it get? RM400? HAHAHAHA
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Nov 10 2007, 11:32 AM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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I saw a `data logging' DMM at JP yesterday, going for the handsome price of RM229. It includes an RS232 cable and software! I also checked out a Sanwa PC500....RM600 for the DMM, software plus USB cable add ~RM700 more. Fluke ah...shop people take one look at me and tell me I can't afford it.
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Nov 10 2007, 02:10 PM
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Senior Member
8,046 posts Joined: Jan 2003
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Sanwa multimeter is certainly good enough for general purpose or for casual DIY..no need to waste money on Fluke which is sold at unrealistic prices in Malaysia. One of the reasons its selling well here because of US factories specifying own country brand test equipment...little or no compromise in that aspect.
My 1st Sanwa analog meter was puchased at RM45 during "our" time and that model is still current..now at somewhere RM110 or so. I've replaced mine 3 times if I can remember..simply because the battery was neglected and the contact points seriously corroded. I still rely on the analog meter for my diagnostic purposes though. Ok..thats it for today.. will be busy modding a new Rotel RQ-970BX phono stage.. stock design is shi* sounding!.. This post has been edited by bsl555: Nov 10 2007, 02:12 PM |
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Nov 10 2007, 07:09 PM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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QUOTE(bsl555 @ Nov 10 2007, 02:10 PM) My 1st Sanwa analog meter was puchased at RM45 during "our" time and that model is still current.. I had a few of those too, and found that like you, somehow the batteries always leaked, corroding the terminals and internal parts, leading to an early retirement.......I think because I always forgot to turn the knob back to the "off" position after use. This Sanwa model is ubiquitous in JP, and there are also plenty of cheap imitation Sanwas to be found in every corner there. However, since there is no analog multimeter which will work with a pc, I guess a DMM is my only option. |
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Nov 10 2007, 10:39 PM
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Senior Member
8,046 posts Joined: Jan 2003
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I'd never want to buy or use a Sanwa knock-off.. its so crude and the accuracy is questionable.
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Nov 11 2007, 12:27 PM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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QUOTE(bsl555 @ Nov 10 2007, 02:10 PM) Ok..thats it for today.. will be busy modding a new Rotel RQ-970BX phono stage.. stock design is shi* sounding!.. Since you and jazzy have inspired me to pick up my soldering iron again, I have been hunting for something to mod too. Looks like I've found my next project. My 14 year old DAC! It has been suffering the jitters lately, and as I now have to iBasso to replace it, I thought maybe worth opening it up to see what's causing the trouble..... No prizes for guessing which component's the culprit. What are my upgrade options, if any? |
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Nov 11 2007, 01:38 PM
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Senior Member
941 posts Joined: Nov 2005
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March05: can sell this DAC to me? i am interested if u can offer me a price that i could afford.
i havent got myself a DAC yet, i miss the yulong DAC bulk order. so now funds up for my first DAC in my life. |
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Nov 11 2007, 06:54 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Whoa! DAC-In-A-Box! Whaddaya know!
This is great development! Will look forward to see this DAC next TT Session This can masuk 'old school' stuffs thread also Don't take too long, eh Bro March.. Upgrade wise you better talk to 'unka' bsl.. I am still new in this DAC business QUOTE(March05 @ Nov 11 2007, 12:27 PM) Since you and jazzy have inspired me to pick up my soldering iron again, I have been hunting for something to mod too. Looks like I've found my next project. My 14 year old DAC! It has been suffering the jitters lately, and as I now have to iBasso to replace it, I thought maybe worth opening it up to see what's causing the trouble..... This post has been edited by jazzy939: Nov 11 2007, 06:55 PMNo prizes for guessing which component's the culprit. What are my upgrade options, if any? |
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Nov 11 2007, 07:12 PM
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Senior Member
941 posts Joined: Nov 2005
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No no dont upgrade the DAC, sell to me is a wise choice...serious man
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Nov 11 2007, 07:21 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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wui, why don't you PM him and beg on your knees for it.. might get it for 'free'
Bro March is a very kind and generous fella.. QUOTE(wui223 @ Nov 11 2007, 07:12 PM) No no dont upgrade the DAC, sell to me is a wise choice...serious man |
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Nov 11 2007, 09:27 PM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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wui223, I feel s.o.b. bad about this...my Audio Alchemy DITB is not going to be for sale. It's part of my history now......this little fella introduced me to digital sound nearly 15 years ago. It didn't quite succeed in luring me away from vinyl, but I still have a fondness for it.
In anycase, I'm sure any new fangled DAC will be better value for money. Patience. jazzy, your eyes are real sharp...I didn't think anyone would recognise the board, especially since I tried to hide the words in my photo. So far I've targeted the following items to change: 1. The spoilt capacitor, of course. Maybe all of them anyway. 2. THe OP275GP to a OPA2132 (need some suggestions here!) 3. The clock module. 4. The external PSU. Should I go toroidal? bsl555, am I heading the right direction? Was thinking of popping over to see you one of these days to take a look at the Linn (if it's still with you). |
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Nov 11 2007, 10:08 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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March,
'alchemist'+'box' will lead to that thing! Those who know, will know! Definitely after 15 years.. time to replace ALL the caps. Can't help you with the opamps.. I'm still experimenting on that. Clock, this one have to get bsl.. he's the 'oldhand' on clocking.. Toroidal will definitely give it the 'oomph' factor. I would make it sing again then upgrade the PSU. definitely the final ultimate improvement. QUOTE(March05 @ Nov 11 2007, 09:27 PM) jazzy, your eyes are real sharp...I didn't think anyone would recognise the board, especially since I tried to hide the words in my photo. So far I've targeted the following items to change: 1. The spoilt capacitor, of course. Maybe all of them anyway. 2. THe OP275GP to a OPA2132 (need some suggestions here!) 3. The clock module. 4. The external PSU. Should I go toroidal? bsl555, am I heading the right direction? Was thinking of popping over to see you one of these days to take a look at the Linn (if it's still with you). |
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Nov 11 2007, 10:55 PM
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Senior Member
1,339 posts Joined: Oct 2005
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Audio Alchemy DITB! WOW!! Never thought that I ever going to see one again. Nice one
Guess what, I'm upgrading my DAC too. But the first thing that I did was I replaced the Opamps, since they're the easiest to do. Now I'm waiting for my Toroidal transformer along with other components to arrive, for the external PSU. Next would be to replace all the capacitors (and maybe some resistors and diodes while I'm at it). I intend to go crazy on this one The clock module needs to be upgraded but I'm not so sure how am I going to go about it. Might probably go for the Burson low jitter clock.. I don't know...Let's see who can finish it first hahaha... |
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Nov 12 2007, 09:53 PM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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QUOTE(grandspy @ Nov 11 2007, 10:55 PM) Let's see who can finish it first hahaha... I'm always a slow coach...so you sure to win lah.What DAC is yours? Looks like we're going to have quite a variety of DACs at our next TT session. |
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Nov 14 2007, 12:05 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Wanna call it a DAC TT Session?
Bro March, how's the DAC coming a long? |
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Nov 14 2007, 12:41 AM
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Senior Member
8,046 posts Joined: Jan 2003
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Sigh! Sigh!.. My SuxMax was down 2 days for no apparent reason and missed your discussion on the AA DAC.
OK.. March05.. depends what kind of sound quality you're looking to relish!. That DAC on its own has its own qualities of very open and forward presentation but may quite limited by the use of run of the mill capacitors and op-amp at low cost. Its comparable with PCM58 DAC design in its heyday. Looking at it, the PSU can be beefed up and opamp replaced to something better. Reclocking would be a problem as space within that box may not permit piggybacking another module. Its not easy to find Wima caps (replacing two thirds of those yellow caps), but the electrolytics in the PSU section can be replaced with Panasonic FC's. I suppose that's as far it can be achieved..provided the parts are obtainable easily. Should my suggestion be implemented, I think it can face up the new PCM58 DAC you fellas are contemplating to buy. But if it can be re-clocked.. IT'LL BEAT THE PCM58DAC to heaven!...trust me!. Made in 1993..old skool?..Nahh!.. not qualified yet!.. Personally, I prefer Analog Devices, Philips DACs and certain PCM Burr Brown DAC's.. sorry! PCM58, PCM56, PCM54 or the latest PCM17xx series (mostly designed for low cost objectives) NOT included. The PCM63 is the only one I feel worthy being the most OUTSTANDING among all the BurrBrown DAC's. Crystal DACs?.. I lunn away far far!.. They make Marantz NOT sounding like a Marantz anymore.. I sometimes feel they're making things to suit low cost and just don't make things like they used to do.. sigh! The real good stuff have all but disappeared.. Yep.. go download and listen to more mp3's lah!.. BTW..the Linn may be going back to the owner by end of this week..now awaiting to install a Linn Lingo inside. Better be fast to pop over.. before it disappears for good...leaving me pictorial memories for me to drool thereafter!.. This post has been edited by bsl555: Nov 14 2007, 01:02 AM |
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Nov 14 2007, 11:13 AM
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Senior Member
1,339 posts Joined: Oct 2005
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March, it's an X DAC
bsl555, IF there is enough space, how would you go about improving the clocking? |
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Nov 14 2007, 11:57 AM
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Senior Member
941 posts Joined: Nov 2005
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my USB DAC in progress, but run out of ferrite beads, anyone can help? now still designing the PCB,using PCM2702 as main chip, basically is something like Alien DAC.
hope can finish and bring to next TT session. |
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Nov 14 2007, 12:07 PM
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Senior Member
8,046 posts Joined: Jan 2003
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QUOTE(grandspy @ Nov 14 2007, 11:13 AM) March, it's an X DAC X-DAC have 18bit BurrBrown DAC and HDCD digital filter. Except for the HDCD feature, it's a budget DAC that's no better than the good old Marantz CD63Mk2 (stock and Un-modded).bsl555, IF there is enough space, how would you go about improving the clocking? Install a low jitter clocking module lah..it improves most stock DAC by miles. Commercial ones from LC Audio or Trichord will cost more than the current value of a used DAC. There's DIY ones featured in some diy forums..at a fraction of the price but involves your own hard labor to build one up from scratch and knowing the circuitry to fit one in...sometimes easy, sometimes mind boggling...which I nearly bungled one up inside my own CDP due to component values which had to be altered. |
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Nov 15 2007, 12:39 AM
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Senior Member
1,339 posts Joined: Oct 2005
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Look what just arrived today!!
  Now what I need is some kind of enclosure, IEC power inlet, power cable, and time to actually fix 'em up. That settles the power part. |
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Nov 15 2007, 12:44 AM
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Senior Member
1,339 posts Joined: Oct 2005
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QUOTE(bsl555 @ Nov 14 2007, 12:07 PM) X-DAC have 18bit BurrBrown DAC and HDCD digital filter. Except for the HDCD feature, it's a budget DAC that's no better than the good old Marantz CD63Mk2 (stock and Un-modded). Install a low jitter clocking module lah..it improves most stock DAC by miles. Commercial ones from LC Audio or Trichord will cost more than the current value of a used DAC. There's DIY ones featured in some diy forums..at a fraction of the price but involves your own hard labor to build one up from scratch and knowing the circuitry to fit one in...sometimes easy, sometimes mind boggling...which I nearly bungled one up inside my own CDP due to component values which had to be altered. I guess getting a clocking module is the best bet. Cost is not really a concern as I intent to keep this DAC for a long long time. |
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Nov 15 2007, 03:09 AM
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Senior Member
941 posts Joined: Nov 2005
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grandspy: what is clocking module?
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Nov 15 2007, 09:54 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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grandspy,
great looking toroidals.. for your DAC? How much does each cost? |
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Nov 15 2007, 11:22 AM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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QUOTE(bsl555 @ Nov 14 2007, 12:41 AM) BTW..the Linn may be going back to the owner by end of this week..now awaiting to install a Linn Lingo inside. Better be fast to pop over.. before it disappears for good...leaving me pictorial memories for me to drool thereafter!.. bsl555, don't want to impose on you too much....please let me know when would be a suitable time to `drop by'. I'll bring along some of my fav vinyls to see how the upgraded Linn performs so I can compare with mine (to see how bad mine is! ). Saturday morning ok?I've got the schematics for the AA DITB....maybe you can help me about the reclocking part.....sounds like something totally alien to me at the moment. I thought very easy lah; can just pop over to JP and pick up a replacement crystal. |
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Nov 15 2007, 11:56 PM
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Senior Member
8,046 posts Joined: Jan 2003
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QUOTE(March05 @ Nov 15 2007, 11:22 AM) bsl555, don't want to impose on you too much....please let me know when would be a suitable time to `drop by'. I'll bring along some of my fav vinyls to see how the upgraded Linn performs so I can compare with mine (to see how bad mine is! You've got my phone number..gimme a call on that day. ). Saturday morning ok?I've got the schematics for the AA DITB....maybe you can help me about the reclocking part.....sounds like something totally alien to me at the moment. I thought very easy lah; can just pop over to JP and pick up a replacement crystal. If it was that easy as to change just the crystal..I'd do it on a million and one CDP's and everyone would have a super duper CDP. BTW, the JP crystals are run of the mill stuff..good enough for repair purposes only. Can't ask too much for 50 sen a pop isn't it?.. |
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Nov 16 2007, 12:15 AM
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Senior Member
941 posts Joined: Nov 2005
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the JP crystal i got is RM1.20, still consider cheap la, any better quality one floating around in KL?
when will u guys meet up for the DAC crystal module mod? i mean bsl555 and march05. pls let me know if can let me attend ur meeting. the TT session is still not confirmed yet coz involve many people, so i guess i would like to meet u guys in small groups if possible. |
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Nov 16 2007, 12:30 AM
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Senior Member
8,046 posts Joined: Jan 2003
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QUOTE(wui223 @ Nov 16 2007, 12:15 AM) the JP crystal i got is RM1.20, still consider cheap la, any better quality one floating around in KL? No lah.. as I said those JP ones are cheap and very nasty..but just usable for repair or project purposes.The best is 10ppm or less for CDP or DAC but I was given one piece thats 100ppm at best and its now inside my own CDP. Those can cost up to RM100 or more a pop...due to custom manufacture and marketing hype. I know there's a local Jap factory making them but its not for retail and open market unless you buy in the thousands for mass manufacture. I think mine were product samples..courtesy of an engineer friend. I think I once straight swapped the one in the CDP and it didn't raise my skirt..till I installed the DIY reclocking module..it made my CDP sound at least TWICE its price point. |
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Nov 16 2007, 04:14 AM
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Senior Member
941 posts Joined: Nov 2005
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can show us what is the DIY clocking module?
i am looking for the lens of CDP-101, possible to get here? |
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Nov 16 2007, 08:57 AM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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bsl555, do you mean that even the expensive modules that you mentioned earlier such as LC Audio or Trichord, will still need to be further modded before fitting into the DAC? If there is no space in the enclosure to piggyback the reclocking module, can it be put outside the casing without affecting the performance?
I guess I'll be taking it real slow on my project...don't have much time to spend on it. First thing to replace will be the caps in the PSU section since one of them is kaput anyway. This is the easiest part and just within my current soldering kungfu. At least the DITB can be put back into action again. |
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Nov 16 2007, 09:29 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Bro March,
Where do you source your caps? JP? Farnell? Once you get the DITB singing, lets have a 'session' eh QUOTE(March05 @ Nov 16 2007, 08:57 AM) I guess I'll be taking it real slow on my project...don't have much time to spend on it. First thing to replace will be the caps in the PSU section since one of them is kaput anyway. This is the easiest part and just within my current soldering kungfu. At least the DITB can be put back into action again. |
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Nov 16 2007, 09:44 AM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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QUOTE(jazzy939 @ Nov 16 2007, 09:29 AM) Bro March, Donno lah. Well, bsl555 has recommended Panasonic FCs....so where can I get these? I'm a total novice at sourcing for the better components. My only shopping experience is browsing in JP shops. Where do you source your caps? JP? Farnell? If I can get the caps quickly, the DITB should be singing in time for the next TT session. (fingers crossed) |
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Nov 16 2007, 09:45 AM
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Senior Member
8,046 posts Joined: Jan 2003
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QUOTE(March05 @ Nov 16 2007, 08:57 AM) First thing to replace will be the caps in the PSU section since one of them is kaput anyway. This is the easiest part and just within my current soldering kungfu. Take note its a double sided board and you may need more skill than may be required. Ill offer to hep you do that remove that cap easily with my de-doldering station and re-solder the new part with Kester solder that's meant for multi layer boards and smaller throughholes.BTW, some values of Panasonic FC's are ready stock at RS in Glenmarie..weekdays only and much nearer to us than JP. This post has been edited by bsl555: Nov 16 2007, 09:48 AM |
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Nov 16 2007, 09:57 AM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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Much thanks for the offer, bsl555....I'll pop over to RS this afternoon and see whether I can get them. Then tomorrow you can swap them for me.
In the meantime, my soldering ability is demoted until further notice. Added on November 16, 2007, 11:52 amJust checked online...RS seems to be out of stock of these caps. Farnell on the other hand has something in stock: http://my.farnell.com/jsp/search/browse.js...requestid=26033 Part Number ECA1VM221 bsl, does this look like the correct replacement part? Original is nichicon 220uF, 16v, 85deg, H9425. This post has been edited by March05: Nov 16 2007, 11:52 AM |
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Nov 16 2007, 06:05 PM
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Senior Member
1,339 posts Joined: Oct 2005
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QUOTE(wui223 @ Nov 15 2007, 03:09 AM) grandspy: what is clocking module? I think you already know by now I'm considering this one.. QUOTE(jazzy939 @ Nov 15 2007, 09:54 AM) grandspy, great looking toroidals.. for your DAC? How much does each cost? yeah, for my DAC. I paid RM96+ for it. |
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Nov 17 2007, 09:28 AM
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Senior Member
8,046 posts Joined: Jan 2003
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QUOTE(March05 @ Nov 16 2007, 09:57 AM) bsl, does this look like the correct replacement part? Original is nichicon 220uF, 16v, 85deg, H9425. You sure its 220uF?.. it looks more like 2200uF to me..which meanwhile I have stock of these, not FC's but generic ELNA which will serve the purpose. |
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Nov 17 2007, 10:28 AM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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QUOTE(bsl555 @ Nov 17 2007, 09:28 AM) You sure its 220uF?.. it looks more like 2200uF to me.. It's 220uF alright....anyway will tell you the latest developments when I come over to your place. The DAC's problems are secondary. Main item on the agenda is the Lingo/LP12 session!Is it ok to come by at 11.00 am? I'm ready and bursting..... |
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Nov 17 2007, 03:29 PM
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Senior Member
8,046 posts Joined: Jan 2003
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I've found the documentation on modding the DAC..which involves replacing the opamp, all DC caps and the voltage regulators, of course entirely the PSU too. I agree all these mods can lift the sonics by a huge margin. It'll not sound like the stock version anymore for sure thereon. I'm confident it has the potential to be on par or better than the bulk PCM58 DAC in some departments. Re-clocking is possible if the whole board is housed in another casing, discarding the original box. If a new chassis is intended, a whole new PSU can also be plonked into it.
The problem is.. THE COST!..depending how far you wanna go. |
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Nov 17 2007, 06:52 PM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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QUOTE(bsl555 @ Nov 17 2007, 03:29 PM) The problem is.. THE COST!..depending how far you wanna go. First of all, bsl555, thanks for another 3 hours of sonic bliss earlier this afternoon! As far as the Audio Alchemy DAC-in-the-Box is concerned, I think my current plan is to go as far as is possible without changing the casing. That means, per your excellent suggestions, a new external PSU, followed by most of the caps, v. regulators and the opamp to be changed. It's a pity that the most important upgrade - the reclocking module will have to be left out at this point. Main reason being that I would like this unit to still remain visually identifiable as the DITB. If we go all the way, there will be practically nothing left of the original DAC....in which case I might as well put my money in a new modern DAC. And I don't even have a decent CD transport to go with this.  Not to mention that I have to budget another RM1K++ for the mouth watering Hercules II upgrade for my LP12 now...after having tasted the Lingo/LP12 sound. Mmmm, I forsee a new tonearm/MC pickup upgrade after that......$$$$$$ fly fly. |
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Nov 18 2007, 10:02 AM
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Senior Member
8,046 posts Joined: Jan 2003
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QUOTE(March05 @ Nov 17 2007, 06:52 PM) First of all, bsl555, thanks for another 3 hours of sonic bliss earlier this afternoon! You're absolutely welcome.. anyway, consider yourself lucky to listen to the rig as its already gone back to the owner at nightfall..no more of it for now. Not to mention that I have to budget another RM1K++ for the mouth watering Hercules II upgrade for my LP12 now...after having tasted the Lingo/LP12 sound. Mmmm, I forsee a new tonearm/MC pickup upgrade after that......$$$$$$ fly fly. Yes..the Hercules upgrade would be the best improvement and justice to your LP12 compared to the expensive and less reliable Vahalla. A new tonearm + cartridge and you're set..sonic bliss in your own home. Sadly I can't afford your rig.. unless I was living in UK. Wah..from discussing DIY PSU to Linn.. not bad ya!.. |
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Nov 18 2007, 11:13 AM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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QUOTE(bsl555 @ Nov 18 2007, 10:02 AM) .....consider yourself lucky to listen to the rig as its already gone back to the owner at nightfall.. the Linn....gone? Lucky me!!! bsl555, you don't need the Linn lah. Your rig already thrashes a lot of Linn based setups. Wah..from discussing DIY PSU to Linn.. not bad ya!.. Back to the DIY thread....I guess after seeing you do that initial magic on the DITB, I realise I would have murdered it if I had attempted to touch those caps myself...close shave there! So I think it's best to leave this project in your expect hands. That means I may have to go to the next DIY TT session with empty hands unless someone can suggest something for me to do which lies more within my true apprentice status..... |
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Nov 18 2007, 11:33 AM
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Senior Member
8,046 posts Joined: Jan 2003
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QUOTE(March05 @ Nov 18 2007, 11:13 AM) the Linn....gone? Lucky me!!! bsl555, you don't need the Linn lah. Your rig already thrashes a lot of Linn based setups. Question: are you getting the capacitors for me to install or I proceed to order some next week as I may be going to RS to order some more parts for upcoming projects and modding jobs. Sidetrack a bit: No lah..my rig is just modest and entirely different tonality or presentation from a fully specified Linn like the one you auditioned yesterday. I'm seriously considering the Hercules contol board also, but some serious mods have to be implemented for it to flawlessly function. Damning matter is the PRICE + shipping!.. got to find some $$ somewhere. IN order of priorty to have good TT sound.. 1)the turntable itself, 2) the arm 3) lastly the cartridge and phono stage. You can install the best cartridge in the world on a cheap TT and it'll NOT do justice in any manner. My TT is superbly tuned and there's 2 more steps to go....one already on the way, the other one in serious consideration and caught between the Hercules option. Like that, NO-ONE can afford my TT if I decide to sell away. Jeez!.. go higher end..NO END!..  This post has been edited by bsl555: Nov 18 2007, 11:52 AM |
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Nov 18 2007, 01:45 PM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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I've got the 6 pieces of 220uF Panasonic FCs from Farnell due to arrive tomorrow. I'll bring them over to you to check whether they're the right ones ASAP. Other items, I think it'll be simpler if you got them for me....the learning curve on sourcing components is a bit too much for me right now.
I'll pm you about the Hercules thingy. |
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Nov 18 2007, 07:07 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Bro March,
You have forgotten your PSU meh? QUOTE(March05 @ Nov 18 2007, 11:13 AM) That means I may have to go to the next DIY TT session with empty hands unless someone can suggest something for me to do which lies more within my true apprentice status..... |
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Nov 18 2007, 08:05 PM
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Senior Member
2,171 posts Joined: Mar 2005 From: Subang Jaya
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QUOTE(jazzy939 @ Nov 18 2007, 07:07 PM) Bro March, Oh ya, sifu jazzy939, thanks for your expert support too, and the timely reminder. When I look at her (my PSU, I mean), sitting so pretty on my table (her neons shining lovingly into my eyes), my heart swells with pride... You have forgotten your PSU meh? Ok, I show her off at the TT this Saturday!!!!  Got Ms PSU 2007 contest ah? |
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Nov 18 2007, 08:51 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Whoa.. so passionate about your PSU eh?
Miss PSU 2007.. sounds like a great idea! QUOTE(March05 @ Nov 18 2007, 08:05 PM) Oh ya, sifu jazzy939, thanks for your expert support too, and the timely reminder. When I look at her (my PSU, I mean), sitting so pretty on my table (her neons shining lovingly into my eyes), my heart swells with pride... Ok, I show her off at the TT this Saturday!!!! Got Ms PSU 2007 contest ah? |
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Nov 18 2007, 08:56 PM
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Senior Member
8,046 posts Joined: Jan 2003
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QUOTE(jazzy939 @ Nov 18 2007, 08:51 PM) Miss PSU 2007.. sounds like a great idea! Miss or Ms?.. never mind..when PSU is mated with something else.. it becomes Madam... |
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Nov 18 2007, 09:31 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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NOT Mrs.?
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Nov 18 2007, 09:43 PM
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Senior Member
8,046 posts Joined: Jan 2003
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QUOTE(jazzy939 @ Nov 18 2007, 09:31 PM) NOT Mrs.? memang cocok!.. (Indon twang!?)... depend how you'd pronounce it... |
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Nov 18 2007, 09:44 PM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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I get the drift..
Memang cocok banget! ekekeke QUOTE(bsl555 @ Nov 18 2007, 09:43 PM) memang cocok!.. (Indon twang!?)... depend how you'd pronounce it... |
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Nov 23 2007, 10:24 PM
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Senior Member
1,339 posts Joined: Oct 2005
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I don't get it..
back to topic: Darn it!! I've not made any progress at all... someone please motivate me.. |
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Dec 2 2007, 02:40 AM
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Senior Member
8,186 posts Joined: May 2005 From: Beaumont, Baile Ath Cliath, EIRE.
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Guys,
Other than Farnell and RS Components, where else can we get electronic stuffs online? Is it much more 'cheaper'? Thanks! |
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Dec 2 2007, 08:03 PM
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Senior Member
727 posts Joined: Sep 2006
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I think in M'sia those are the 2 most reliable ones
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Dec 2 2007, 09:50 PM
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Senior Member
8,046 posts Joined: Jan 2003
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QUOTE(MadZiZ @ Dec 2 2007, 08:03 PM) I think in M'sia those are the 2 most reliable ones Reliable but NOT well stocked. They had much more some years ago..the essential or desired items I need most seem to have disappeared or not in stock. |
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