----------- The computers with the power supplies that connect to the motherboard with a single connector can be shut down by a signal from the motherboard created by the operating system. I believe that they can also be turned on by a signal from the operating system. --------------
That's an ATX power supply. The one's with the two mobo connectors are "AT" power supplies with an independent switch. All you need to switch (turn on/off) an ATX PS is a mobo for one. You just connect the power connector, then momentarily short the (usually labeled) "PWR" pins in the mobo front panel connector pin-outs. Sometimes it's labeled "power", or "switch", etc. Another way is there are also ATX PS testers for as low as $10. It's not good to power up any PS for more than a few seconds because there's no load on it. A PS tester has a dummy load it applies to the PS so it can remain on for a couple of minutes or so, but no longer than that. If this is a one-time thing only and you only want to see if it powers up and you have no mobo, then on the main ATX to mobo power connector you can short a ground (black wire) to the green (PS-ON) wire. http://www.orpheuscomputing.com/downloads2/ATX-pinout.rtf -Clint God Bless Clint Hamilton, Owner http://OrpheusComputing.com ----- Original Message ----- From: <[EMAIL PROTECTED]> The computers with the power supplies that connect to the motherboard with a single connector can be shut down by a signal from the motherboard created by the operating system. I believe that they can also be turned on by a signal from the operating system. I want to test a power supply independent of the mother board. What type of signal is required to turn the power supply on and keep it on? On what line in the connector is the signal sent? Some power supplies have a separate two wire connector that might be used for this purpose. Is there somewhere that I can download this information? Maybe in a PDF file that contains schematics? Wally ============= PCWorks Mailing List ================= Don't see your post? Check our posting guidelines & make sure you've followed proper posting procedures, http://pcworkers.com/rules.htm Contact list owner <[EMAIL PROTECTED]> Unsubscribing and other changes: http://pcworkers.com =====================================================
