Author Topic: ATX PSU to bench-top power supply conversion (yet another)  (Read 1644 times)

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Offline made2hack

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ATX PSU to bench-top power supply conversion (yet another)
« on: July 24, 2017, 10:47:02 am »
Hello all,
My ATX PSU to bench-top power supply conversion.
Enjoy!


Offline joseph nicholas

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Re: ATX PSU to bench-top power supply conversion (yet another)
« Reply #1 on: July 24, 2017, 01:33:49 pm »
I have at least 10 of these ATX/AT power supplies laying around and not one of them needs a dummy resistor to power up. 
 

Offline made2hack

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Re: ATX PSU to bench-top power supply conversion (yet another)
« Reply #2 on: July 25, 2017, 08:53:57 am »
Do they have fans installed? Maybe the fans act as loads?

Offline joseph nicholas

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Re: ATX PSU to bench-top power supply conversion (yet another)
« Reply #3 on: July 25, 2017, 09:56:17 am »
Yes they all have fans.  All atx/at computer power supplies have fans.  And when I disconnect the fans they all come on and supply power without any load whatsoerver.
 

Offline Specmaster

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Re: ATX PSU to bench-top power supply conversion (yet another)
« Reply #4 on: July 25, 2017, 10:10:24 am »
Yes, its correct, I have them with and without a fan and they will switch on OK.
Who let Murphy in?

Brymen-Fluke-Solartron-HP-Thurlby-Heathkit-Thander-Tek-Extech-Black Star-GW-Advance-Avo-Kyoritsu-Amprobe-ITT-Robin-TTi
 

Offline made2hack

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Re: ATX PSU to bench-top power supply conversion (yet another)
« Reply #5 on: July 25, 2017, 05:04:37 pm »
To be honest, the original PSU I hacked (the black one I disassembly) I built around 2 years ago. I cannot remember at the time why I added the load resistors and just kept them for the updated one.


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