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Putting a toggle switch and a momentary switch in a series for power-up? - Page 2

post #11 of 32
Thread Starter 
Yeah, I realized the problem with that diagram after I posted it but couldn't edit it since the servers went down.

This is how I revised it:

d7992ccfdf7d224487e9b164dede81e0.png

The HDD activity LED will go to a reset switch, not pictured. Honestly I have no idea if that's even a logical idea though, trying to diagram thoughts as I have them.

What I'm trying to do is wire the LED to completely depend on the position of the toggle switch. ie, it goes off if the toggle switch goes off even if the computer's on. I would LOVE it if I could wire it so the LED turns on when the toggle switch is flicked on even if the rest of the computer isn't, but I suppose that'd need a battery and a resistor and as far as that goes that's a bit over my head for now.
Edited by Supacasey - 1/17/11 at 4:32pm
    
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post #12 of 32
The power led needs to be on its own and not connected to the other switches/circuit, its turned on or of by completing the circuit with the switches, the led in momentry switch powered by the molex, it will light when the system is on but is it a 12v led?.

Edit - it is a 12v led.
Edited by Darren9 - 1/17/11 at 4:35pm
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post #13 of 32
Thread Starter 
Quote:
Originally Posted by Darren9;12047032 
The power led needs to be on its own and not connected to the other switches/circuit, its turned on or of by completing the circuit with the switches, the led in momentry switch powered by the molex, it will light when the system is on but is it a 12v led?.

Edit - it is a 12v led.

I'm aware that the power LED will turn on when the computer is on, but I also want to have control of it through the toggle switch. That's why I incorporated it into the switch circuit.
    
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post #14 of 32
Quote:
Originally Posted by Supacasey;12047117 
I'm aware that the power LED will turn on when the computer is on, but I also want to have control of it through the toggle switch. That's why I incorporated it into the switch circuit.

The trouble is the toggle switch is combined with the momentry switch, current only flows when the toggle is on and the momentry is depressed for a moment, and leds in that circuit will only be on for that moment. I don't think you can do what you want with the switches you have. The power switch circuit needs to be momentry, you can't combine it with a continually on circuit - if its active for more than a few seconds you activate the reset.
Edited by Darren9 - 1/17/11 at 4:59pm
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post #15 of 32
Thread Starter 
Well, this would work, right (I realize that the toggle switch is now somewhat superfluous now but stay with me =S)?

3a89836b738b5641026b4460580cb55d.png

And so would this?

83e98a97a2d55ead3237e606fcbecbc5.png

Unless there's some basic principal to electrical engineering that I'm not grasping, I'm not sure why the both together wouldn't...

No wait... Okay, that kind of backfired, I sort of see why it wouldn't now, hold on... Hehe
Edited by Supacasey - 1/17/11 at 5:19pm
    
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post #16 of 32
You can grab the 5v standby power from the ATX connector on your PSU if you want a LED lit up when the computer is off (but still plugged in). It will be dim since your switch has a 12v LED in it.

To make the LED in your switch turn on when the switch is thrown, connect ACC and power.

You probably will need a transistor to make the thing work without blowing itself up if you want the switch to light up when the computer is off/on or to light up to full brightness.

PowerSwitchWiring.png

You can use a relay in place of the transistor/mosfet.
post #17 of 32
Thread Starter 
Holy crap, 70% of that went over my head but it gives me hope!

But yeah, I see what you're saying now Darren, the toggle switch would have to be capable of controlling two circuits like the momentary can to handle what I was trying to get at. But I don't suppose I'd get away with this? =S

4b1592d466f1d9d448a4187348a6e343.png
Edited by Supacasey - 1/17/11 at 5:38pm
    
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post #18 of 32
As a riff on the previous answer, you could do the following:
Grab current from the 5vSB circuit either from the 24pin, or from the USB headers, run that to the toggle switch. Use the switch to turn on the LED and a transistor which is wired between the power button and the connector. So when the toggle is on, the transistor allows the current to pass through making the button live. You could use a relay instead of the transistor if you wanted.
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post #19 of 32
Thread Starter 
Sounds like progress, but I've only got VERY limited electrical wiring knowledge, so most of that is over my head.
    
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post #20 of 32
1 sec i messed up..
Edited by The Fryer - 1/17/11 at 6:06pm
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