ok now, who's jazzy? i wanna learn sumthing too.
My first kit built....:P, Simple 9v regulator
My first kit built....:P, Simple 9v regulator
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Sep 1 2007, 10:12 AM
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#1
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Senior Member
2,475 posts Joined: Nov 2005 From: kopitiam |
ok now, who's jazzy? i wanna learn sumthing too.
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Sep 1 2007, 10:30 AM
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#2
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2,475 posts Joined: Nov 2005 From: kopitiam |
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Sep 1 2007, 10:50 AM
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#3
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2,475 posts Joined: Nov 2005 From: kopitiam |
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Sep 3 2007, 09:55 AM
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#4
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2,475 posts Joined: Nov 2005 From: kopitiam |
jazzy . pm me yur hp number.
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Sep 5 2007, 08:38 AM
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#5
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2,475 posts Joined: Nov 2005 From: kopitiam |
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, 03:26 PM
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#6
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2,475 posts Joined: Nov 2005 From: kopitiam |
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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#7
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2,475 posts Joined: Nov 2005 From: kopitiam |
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, 06:21 PM
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#8
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2,475 posts Joined: Nov 2005 From: kopitiam |
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Sep 6 2007, 11:23 AM
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#9
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2,475 posts Joined: Nov 2005 From: kopitiam |
sifoos. wanna join me for robotics projects? www.cytron.com.my
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Sep 6 2007, 03:45 PM
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#10
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2,475 posts Joined: Nov 2005 From: kopitiam |
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 8 2007, 08:35 PM
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#11
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2,475 posts Joined: Nov 2005 From: kopitiam |
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, 11:45 PM
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#12
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2,475 posts Joined: Nov 2005 From: kopitiam |
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Sep 24 2007, 02:25 PM
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#13
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2,475 posts Joined: Nov 2005 From: kopitiam |
yeah im a noob. but at soldering oni. hahaha.. now not a soldering noob anymore.
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Sep 24 2007, 05:09 PM
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#14
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2,475 posts Joined: Nov 2005 From: kopitiam |
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Sep 25 2007, 09:24 AM
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#15
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2,475 posts Joined: Nov 2005 From: kopitiam |
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, 01:13 PM
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#16
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2,475 posts Joined: Nov 2005 From: kopitiam |
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Sep 25 2007, 09:44 PM
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#17
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2,475 posts Joined: Nov 2005 From: kopitiam |
shy to post mine.
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Sep 26 2007, 01:19 AM
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#18
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2,475 posts Joined: Nov 2005 From: kopitiam |
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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Oct 2 2007, 07:49 PM
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#19
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2,475 posts Joined: Nov 2005 From: kopitiam |
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, 08:38 PM
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#20
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2,475 posts Joined: Nov 2005 From: kopitiam |
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