View Full Version : PSU Relay?
Çhrist0ph
01-01-2004, 12:52 AM
I am planning on using an 80 watt pelt (MCW50-T) to cool my ti 4200. My PSU does not meet the power requirements(7.5 a on the +12v rail) for the tec so im planning to use a seperate powersupply. How can I make this PSU turn on to power the pelt when I turn on my computer?
NitroRat
01-01-2004, 10:08 AM
read this thread
http://www.xtremesystems.org/forums/showthread.php?s=&threadid=25493
Çhrist0ph
01-02-2004, 05:10 PM
Can that relay switch turn on normal computer PSU's? Or is it only compatible with Samlex and Meanwell dedicated PSU's?
NitroRat
01-02-2004, 05:14 PM
Don't need that to do that, just jump a couple of wires and it will turn on you pwr sup. Most need a load on the 5 volt line to turn them on . There are a couple of post that give you the details to do it , do a search to find them.
Çhrist0ph
01-02-2004, 05:18 PM
any links to those posts would be awesome
NitroRat
01-02-2004, 06:16 PM
try searching the forums...
Çhrist0ph
01-02-2004, 07:14 PM
i tried but im not extactly sure what im looking for
sandman
01-02-2004, 09:15 PM
If it's just a normal PC power supply, take a waire and jumper the green wire to any black wire on the ATX motherboard connector.
You'll want to load the 5v line though
Çhrist0ph
01-02-2004, 09:28 PM
The PSU im hoping to power the MCW50-T says it outputs a MAX of 6 amps on the 12volt rail. Swiftech's website tells me thats the power that the MCW50-T draws(6amps on 12v). Will this PSU be able to handle it? Or should I get a PSU that puts out a little bit more? The MCW50-T and maybe a few fans is all that would be running off it.
Hi
for 2 x psu's to boot together..
Its easy just get a regular 12v relay of a car etc
(splice not cut) the wire to pin 14 of the atx plug of the slave power supply (psu 2)
put the wire from the slave power supply end of the atx pin 14 to the live in (pin no: 30) side of the relay
then run a com (Earth) to (pin no : 87) on the relay...
Run a com (Earth) wire to (pin no : 85) on the relay...
then finally (splice not cut) a 12v live of the master psu ( PSU 1) atx no: 10 (yellow) wire then run this as the switch live to the relay (pin no : 86) on the switch side of the relay...
make sure you have a load on the 5v side of the psu 2 jobs a gooden..
i run 2 x psu like this and a relay for my peltiers as i run a twin phasechange system and need to hold it all off till i get the boot temps from my compressors...
press your power button up they fire :D