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 My first kit built....:P, Simple 9v regulator

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March05
post Sep 1 2007, 10:28 AM

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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........ sweat.gif

March05
post Sep 1 2007, 10:40 AM

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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. biggrin.gif

Shall we try to get this jazzy to give us some lessons at McD's?

March05
post Sep 1 2007, 12:23 PM

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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. rclxms.gif rclxms.gif


March05
post Sep 1 2007, 02:21 PM

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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 biggrin.gif
Otherwise I am thinking of a DC to DC inverter.. 12 to 18 volts.. too much work tongue.gif
So far I have MadZiz calling me now and then, you might want to tag a long with him.
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) biggrin.gif
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. laugh.gif

And of course, to make some new friends like you & MadZiz. biggrin.gif 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.



March05
post Sep 1 2007, 09:50 PM

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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?
March05
post Sep 2 2007, 03:15 AM

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QUOTE(Eokboy @ Sep 1 2007, 10:26 PM)
Ehh I thought I built you a Class AB...
Oops oh right it is another CMoy derivative too  laugh.gif
I have no idea what you built for me...it just sounds great to my ears. rclxms.gif rclxms.gif

QUOTE(jazzy939 @ Sep 1 2007, 10:55 PM)
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?
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.


March05
post Sep 2 2007, 04:08 AM

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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...  doh.gif
Unfortunately....that is so. Back to the drawing board, I guess.

March05
post Sep 2 2007, 09:23 AM

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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.
March05
post Sep 2 2007, 10:19 PM

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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.
March05
post Sep 3 2007, 05:31 PM

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QUOTE(jazzy939 @ Sep 3 2007, 12:41 PM)
Yes. I think so too.
Oh well, there goes my DIY project. cry.gif

And for my other 18v requirements, I'll just link 3x6v SLA batteries in series together. Simple old fashioned solution. biggrin.gif

Looks like I'll only be able to meet up with you and MadZiZ when we get the iBasso D1, eh?

March05
post Sep 5 2007, 11:55 AM

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QUOTE(jazzy939 @ Sep 3 2007, 05:39 PM)
March05!Isn't this your lucky day.. errr night oledi........
It's gonna cost u! PM me for price...
I feel like I'm going to my DOOM! laugh.gif

Okay will pm you now.

March05
post Sep 7 2007, 12:56 PM

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QUOTE(MadZiZ @ Sep 7 2007, 12:50 PM)
Haha Jazzy getting too technical for me la. HELP! tongue.gif LOL!!!!
Yalah, I'm just reading these posts with a dropped jaw....huh? huh? huh?

March05
post Sep 7 2007, 10:34 PM

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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...... sweat.gif

QUOTE(jazzy939 @ Sep 7 2007, 06:36 PM)
Uncle March?  shocking.gif  errr should I call you uncle also ah?
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!
March05
post Sep 14 2007, 09:32 AM

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QUOTE(MadZiZ @ Sep 14 2007, 05:53 AM)
Techies.........why make it so not understandable??? tongue.gif
Whoa, this is swinging from electronics to chemistry lessons.....now my jaw has really dropped off my face.


March05
post Sep 14 2007, 07:47 PM

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QUOTE(jazzy939 @ Sep 14 2007, 05:24 PM)
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? biggrin.gif
Hey_hey_hey! I wanna learn to do something like that too! Is that from a standard DIY kit?

March05
post Sep 14 2007, 08:17 PM

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QUOTE(jazzy939 @ Sep 14 2007, 07:55 PM)
.....I almost went overboard initially of wanting to install a digital display! tongue.gif
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. thumbup.gif

March05
post Sep 15 2007, 12:19 AM

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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 tomorrow today to look over the tonearm he got for me... drool.gif 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.

March05
post Oct 8 2007, 10:05 AM

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QUOTE(jazzy939 @ Oct 8 2007, 04:59 AM)
only two... tongue.gif
You left me out....I enrolled, but always ponteng class. Not yet started on my first project (PSU) somemore. sweat.gif

March05
post Oct 16 2007, 01:50 PM

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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? brows.gif

Meanwhile, I'll try to finish my PSU project over the next couple of days so sifu jazzy can check and criticize my handiwork........ sweat.gif

I still can't figure out what this smilie cool.gif means.
March05
post Oct 20 2007, 10:41 AM

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QUOTE(skma @ Oct 20 2007, 09:59 AM)
We're seniors biggrin.gif
Seniors? Not much better......go to the bank, join the senior citizens counter, you'll get what I mean. sad.gif 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. whistling.gif




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