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Unread 28-11-2005, 10:33
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Tristan Lall Tristan Lall is offline
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Re: Alternative to limit switches?

Quote:
Originally Posted by KenWittlief
An example is the power switch in most PCs. The switch is back by the power supply, but the on/off button is on the front panel, connected by a long push rod.
Ken, I think you're trapped back in the days of the AT form factor (or before)! Modern PCs (i.e. nearly anything within the last eight years) use an electrical connection directly to the motherboard, with a momentary switch. Cross two pins (one is connected to 5VSB, if I remember correctly), and the motherboard instructs the power supply to turn fully on.

There is a second switch on the back of most power supplies, but I don't think that that's the one to which you were referring; it just interrupts the power completely (preventing the motherboard from receiving standby power).

Last edited by Tristan Lall : 28-11-2005 at 10:36.