PC Power Supply for DIY

[Dale Einarson]

Hey I have a bit of optimism in this one.

In keeping with the 5$ principal
*        You could make BIG BIG filters: An "I" filter with a voltage clamping ( attached at the load) diode could do the trick, but you wouldn't get much voltage out of it!  75% maybe... 

*       You could make an oscillator with typical ttl/cmos to drive a transistor to drive a diode voltagedoubler  BUT this uses a lot more current! but 1A is a lot if you aren't driving speakers etc..


THE FAN:
        You could replace it with a quieter fan.  :)

This is only if you like to use salvage.

Cheers
Dale Einarson
einarson at cafe.net
feel free to email me for more info I have some schematics you might like.


>Never use a switcher for audio unles you really know what's going on. Besides the noise (100's of mv), most switchers require a minimum load of 15% of the max. rated, or else they go out of regulation.

>> I can get an old IBM PC for $10.  Is the power supply useful for powering a
>> synth DIY project?  I would think so.  Would I have to keep the noisy fan?
>> 
>   I wouldn't use one.  PC power supplies typically are good for only 
>+5V, as most everything in a computer is run on that.  So the ratings on 
>a PC power supply are something like this:  +5V @ 1.5A  +12V @ 0.4A
>-12V @ 0.1A.