Electronics Power supply without a computer

is it possible to get a power supply running without attaching it to a motherboard? i have a spare i want to play with but i dont feel like taking my pc apart everytime i decide to test it

 

Connect the green pin to one of the black ground pins on the ATX connector. A paperclip, a jumper wire, whatever.

A note: I noticed my SF/TTGI power supply acts flaky when there's no load on it. Specifically, you turn it on and the voltages drop within seconds to zero. Fixed by throwing an old broken CD drive on one of the molex connectors.

 

ive seen some at work that do the same thing, weird but for the most part most will work ( i think its pin 4 to pin 6 on the top row from the left)

good luck with that, during the summer i connected 4 120 fans to an old psu and used it as a ghetto fan.

 

Where did you get all fans???

 

haha, it's 4 120mm fans, i think. not 4,120

 

Sounds like an idea for afrotechmods..


But yes, just ground the green pin. Those testers you buy, all they do is ground that pin and use a resistor to simulate load.

-scoob8000

 

Stupied me

 

Why dont u use an old ATpsu, they are switched on by a switch instead of be ing swith on by motherboard. I use one for testing my rewiring, soldering etc. . And when u connect a old cdromplayer(with a headphone connector) u have a CDplayer...

 

Yeah, under the clip on the plug with the most wire holes that plugs into your motherboard, holding the clip up, horizontally, connect the 4th and 6th pin holes by bending a paperclip and sticking it in to the holes. Make sure to take the rubber coating off the wire first... mm, and don't do the wrong pins. you won't be around to say oops.

 

I Have also seen this problem. We had an order for around 150 dumb terminals (Cel 2.4 + Mobo + RAM) which were switching off after 5 seconds.

To fix this we wired up a resistor pack:
1 X 5.6 Ohm 10W
1 X 6.8 Ohm 10W (Total: 12.4 Ohm 10W)

This was soldered to a molex plug on the 5V line and fixed the prob.

But, yeah and old HDD or CD Rom will have the same effect.

Cheers

 

might try this, could be my new fans in the summer

 

its not ghetto enough
if you had, perhaps, a hamster in a cage powering the fans...

 

I use an Y-split with a 80mm fan on and loose wires so i can
connect it to anything.
The first time i tested this thing i used
the fan to see if there where any problems on the wire.
I think the fan should solve these problems to.

 

The Antec PSU tester uses a 5.4 ohm load on the 5V line to ensure voltage regulation is working accurately. A couple of 10 ohm 5W resistors in parallel, or a 4.7R or 5.6R 10W, will do the trick nicely for a permanent setup.

 

What lines do you need to load? Is it just 5v or do I need to load 12v and 3.3v as well?

Also, what current should I be drawing on the lines?

_C