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Starting the cabinet all at once. It works! And here's how...

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SirPeale:

I'd appreciate it.

rsoandrew:

Now I understand.

I think a normally closed timed open (NCTO) relay would work. Of course I looked around on-line and didn't find anything. I guess knowing what you need and finding it are two different things.

So I had two other thoughts. You could build a circuit like this one:
 http://www.aaroncake.net/circuits/relaytim.htm

Or buy a few normally closed relays and cascade enough of them to give you the delay you need when the power kicks in before the one that controls the circuit for the momentary contact switch finally opens. With this type of circuit, the cheaper relay is probably better. Now this assumes your PS won't complain about having the "switch" depressed when it gets power. Otherwise, you'll have to build the circuit.

Stormy151:

I'm not sure if I understand what you want to do- but they DO make time delay relays. IIRC, they are fairly expensive for such a small part.  The ones I've seen are pretty good size- they have a knob on the top for adjusting how long it stays open/closed, all kinds of time intervals are availiable, and you can set some to delay when the relay is triggered, or when it's released.

Here's a link to some I found on Mouser's site: http://www.mouser.com/?handler=data.listcategory&N=388&Ne=300



_Iz-:


--- Quote from: Peale on May 15, 2004, 09:34:07 am ---
--- Quote from: rsoandrew on May 15, 2004, 07:56:56 am ---If I didn't understand your problem, please post again and give a few more details.
--- End quote ---

You sure didn't.

I'm trying to get everything to power on at once.  I tried rigging a power supply to be 'on' all the time, but the motherboard didn't like the PS being wired that way.  It threw the PWR_GOOD timing all off, and wouldn't boot.

So a relay that simply just bridges the connection of the power pins is what I'm looking for.  When power is applied, it just momentarily bridges the contact between the pins - but doesn't stay on.

The motherboard does not supprt resume after power off, so that's not an option.  And I'm not mounting any additional buttons.

--- End quote ---


I don't get why you don't hook the powerbutton to the motherboard pins, and plug the computer into the control outlet of the "smart" powerstrips and everything else into the switched sockets of the same powerstrip?

SirPeale:


--- Quote from: _Iz- on May 16, 2004, 03:22:29 am ---I don't get why you don't hook the powerbutton to the motherboard pins, and plug the computer into the control outlet of the "smart" powerstrips and everything else into the switched sockets of the same powerstrip?
--- End quote ---

I'm looking to turn it on via the original cab switch.  I've attached an image how the cabinet is wired.  No, I won't deviate from this wiring.  It simply can not be this hard to get an ATX power supply.



As for a timed relay, especially one that is normally closed, that would turn on the computer, then turn it off again four seconds later.

What I'm looking for is a device to momentarily bridge the gap between the pins when power is applied.  It does this once, and only once, upon application of power.  It will, of course, repeat this when the cab is powered on again for the next time.

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