power supply

[computerman]

ok if i just want to power up CC lights or any of those types that use the MOLEX plug will it work if i dont plug the power supply into a motherboard? i'm not doing this for a comptuer but i want to use those lights

[linlin]

If it is AT PSU then it will power on with a switch. If it is an ATX PSU you will need to mod a little bit. Heres a guide from the one and only ramsinks.

Ramsinks PSUTESTER (http://www.ramsinks.com/psutester.aspx)

[zeLupin]

aha! it wont work unless you jump the 1 green cable on the 20 pin connector with any random black cable there.

The green cable is PS-ON basiclly once that cable recieves a completion in the circuit it will turn the psu on. the black cable is the cable needed for completion.

basiclly just stick a paperclip in there and you're set. it'd be better to add a switch between those two if you want to close it occasionally UNLESS the psu already has one.

[computerman]

so if its an AT it'll work even if i dont do anything to it?

[zeLupin]

yep

[computerman]

ok i understand.... cut the green wire n a black one n just wire them up to a switch and thats it right? all i'm gonna do is power up like 2 cc lights and maybe if i can figure it out my MP3 wire for the charger wich says output +5Vdc so do i basicly just get the same wire n just get a molex connector thing and put the two wires in it and plug it in?

[linlin]

I once had an AT PSU that needed to be plugged into the mobo to work, but it had a seperate switch plug that came out of the psu. Had 3 wires.

Purple. Black. Green. Cant remember which ones you connect. Assuming green/black like the ATX?

Anyways you probally dont have a PSU wit that anyways. Posted purely for the sake of information.

[computerman]

hmm i cant find any AT psu only ATX
i have an old one from an Emachine maybe i'll just put the switch on it

[linlin]

Yup, pretty straight forward.

You can even just touch the green wire to the PSU case if you wanted to :P

[computerman]

ok i cant stop postin lol umm this is going into a lil project me and my friend r doing and well i'm just gonna power up CC lights forget about the MP3 player may i'll add it later... anyways is there a way i could instead of using a PSU just but a molex thingy and wire it up to battery\s instead of having the power cord?

[linlin]

Unless you want to use a car battery or another large wet battery. The CC inverthers draw too much power and the batterys would run out in like 30 seconds.

[computerman]

oh damn kinda hoping i could do that oh well i guesss i'll cut my old psu and plug it into the wall

[anode]

Originally posted by linlin@Aug 2 2004, 04:01 PM
Unless you want to use a car battery or another large wet battery. The CC inverthers draw too much power and the batterys would run out in like 30 seconds.
30 seconds seems a little exagerated, but you make the point.
(granted going from DC to AC is not very effiecient. )