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ATX PSU mods
- 10-17-2005
- Alan Peake
October 17, 2005, 8:25 am

Hi all,
Have been looking at the article in SC re converting AT power supplies
to 13.8V bench supply. Has anyone done this with an ATX supply? In
addition to being able to get 13.8V @ 20A, I'd also like to modify one
to give around 28V @ whatever current it can produce - preferrably >15A
Alan

Re: ATX PSU mods
On Mon, 17 Oct 2005 18:25:54 +1000, Alan Peake
composed:

I can't see that an ATX PSU would be any different, except that you'd
need to either short the PS_ON pin to ground permanently, or install
an SPST switch to switch the PSU on and off.
-- Franc Zabkar
Please remove one 'i' from my address when replying by email.

Re: ATX PSU mods
finger to keyboard and composed:

The case button is momentary, but the motherboard's PS_ON output is
not.
See http://www.pavouk.comp.cz/hw/en_atxps.html
When I power up a new system for the first time, I use a jumper wire
between the PS_ON and Ground pins. The only load connected to the PSU
at this time is an expendable HD.

-- Franc Zabkar
Please remove one 'i' from my address when replying by email.
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