Help a dummy, save a life. PSU recycling... - diyAudio
Go Back   Home > Forums > Amplifiers > Power Supplies
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 14th May 2007, 12:02 AM   #1
rja is offline rja  United Kingdom
diyAudio Member
Join Date: Jun 2006
Default Help a dummy, save a life. PSU recycling...

Hi all,

I'm in the final stages of designing a rather basic USB -> I2S -> DAC, to turn my PC into a source. As this is a learning experiment, and being done on veroboard(yes! I know, I know...), I'm looking to do it on the cheap. If I prove to myself that I can make something that works, then I'll look at making a dedicated PCB from the schematics used for the prototype.

Aaaaanyway, because I'm doing it on the cheap, I'm hoping to recycle a PSU from my old CD player, at least for the prototype. Figured I've got it kicking around anyway, and it was silent in the CD player... but I don't know anything about it!

Have plugged it into the mains and measured the output voltages. There are seven wires coming from the secondary side - brown grey grey, and brown grey grey grey.


The measurements I get, using the B wires as negative on my multimeter are and the individual G wires on the positive side:-


All measurements were taken without any load - I know this will affect the output, but what kind of voltages can I expect after DC rectification? Is it a straight conversion, or will I see less/more voltage?

Will I be able to use 19 as -19, and 20 as +20, and then regulate them to -12v and +12v for my power supply? I can then tap the 12v supply for any lower voltages I require, by using lower valued regulators?

Cheers for any help - I'm somewhat capable with a soldering iron, but I've never designed a PSU before. And I'm a little stumped by the number of outputs on this one - spot the amateur!


  Reply With Quote


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Recycling old Capacitors keantoken Parts 0 21st April 2008 07:19 AM
Recycling Bozak drivers Ray Collins Multi-Way 0 7th April 2007 12:01 AM
This little thing might save your life! jamesjung21 Tubes / Valves 6 24th September 2004 10:56 AM
Recycling parts DIY_Peter Solid State 16 20th May 2003 02:11 PM
Recycling Parts is it possible TomJ Parts 13 22nd February 2003 08:32 PM

New To Site? Need Help?

All times are GMT. The time now is 04:37 AM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2