Making a atx12v power supply to test for short

[macattack600]

possible?

[macattack600]

Re: Making a atx12v power supply to test for short

possible?

Actually I am wondering what I can run from the ground to positive end of something 12v

I want to push 12v through a pair of transistors but I need something on the positive end that draws power to feel the board get hot in a location

So, atx -12v rail to -transistor. atx-ground to ground on board.
I think ? and ground wire to something heavy 12v this idea work? The board uses transistors to turn 16v into 12v, there is a short to ground on the board.

[stj]

Re: Making a atx12v power supply to test for short

so you want to blow the short or make it smoke?
that's going to do more damage.
anyway, most psu's wont let you do that, you need to use a bank of caps that you charge and then connect to the short.

then you will blow *something* but probably not what is shorted.

what you really need is a low-ohms meter, there used to be circuits to build an audio tone version using an lm3909 that will find shorts usually.

[macattack600]

Re: Making a atx12v power supply to test for short

possible?

so you want to blow the short or make it smoke?
that's going to do more damage.
anyway, most psu's wont let you do that, you need to use a bank of caps that you charge and then connect to the short.

then you will blow *something* but probably not what is shorted.

what you really need is a low-ohms meter, there used to be circuits to build an audio tone version using an lm3909 that will find shorts usually.

I accomplished this I ran them to a strip of leds and turned the power supply on with tweezers