ATX power supply control

Can any one tell me how to effect a simple on/off control of a standard ATX type power supply to use it on bench or for other projects? How does motherboard control this function? Thanks

Reply to
ee_design
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Connect the purple/green wires.

Adam

Reply to
Adam Stouffer

Unless it's from DELL.. same connector, different wires..

Reply to
pbdelete

Pin 14 usually green gets grounded. Mike Dell has another idea about pin number but it is still the green

Reply to
gfretwell

yeah it's green and black that you hook together, for details of which pins check a motherboard manual, green will be labeled ______ pwr_on or something like that

and black will be "gnd"

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Bye.
   Jasen
Reply to
jasen

Also to get regulation, it needs about 1 amp load on the 5 volt line. A 5 ohm 15 watt resistor can do that. And if you want more voltage use multiple supplies, which you can connect in series with the condition that you open up the case and insulate the ground connection from the case ground. All but the first supply need modified this way. Then you can have available many amps depending on the supply used. Tie the 5 volt is series and you can get on 2 supplies 10 volt at 20 amps easy. More supplies of same unit just ups the voltage with same avail current. Be aware the the 12 and 5 volt share the same ground still. JTT

Reply to
James Thompson

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