ATX connector

[AudioFreak]

Originally posted by MaXiZ
is this an "ok" schematic?
http://www.mitedu.freeserve.co.uk/Ci...er/1230psu.htm

For providing power, that circuit should probably be adequate even if not ideal. The whole point though is that you absolutely need the circuits that handle 5VSB, PS_ON and PWR_OK or you will never even be able to start the computer (and jerry-rigging those pins to "trick" the motherboard isn't really an acceptable solution).

[MaXiZ]

What's 5vsb exactly?

jerry-rigging those pins to "trick" the motherboard isn't really an acceptable solution

???????????????

[AudioFreak]

5VSB is the 5V line that appears on it's own pin on the ATX connector. The 5VSB line has +5V on it at all times when the power supply is plugged into the wall even if the computer is turned off.

Jerry-rigging. I mean you actually need the logic to handle this not just to jumper these lines to the voltages the motherboard would expect when things are ok.

[MaXiZ]

I'll make some experiments.
At max i'll lose a cup+motherboard with a volue of 20€!

I mean you actually need the logic to handle this not just to jumper these lines to the voltages the motherboard would expect when things are ok.

Why not? If i supply EXACTLY +12.00V,+5,00V and +3,3V at right current...

[AudioFreak]

I think you need to read the official ATX12V 2.2 specs all the way through a couple of times so you can fully understand what those control lines do and the logic required for them.

http://www.formfactors.org/developer...public_br2.pdf

[AndrewT]

Hi AudioF,
thanks for the ATX pdf.