Re: [CAD_CAM_EDM_DRO] Computer Power Supply

pappyfrance wrote:

>I have a compaq computer power supply I salvaged and want to use.
>However I can't figure it out. I know you need to keep a load on the
>5V line to get it turn on and to output the other voltages. I found
>the gray wire to ground does the trick, the fan comes on and the
>other voltages are there. However as soon as I apply a load it kicks
>out and I have to shut it off wait a couple of seconds and turn it
>back on. The load is 12V .22A so it can't be that. I have put
>various resitances across the 5V from 0 - 450K ohms. Same result.
>Any ideas.
>
>
>Part No 286008-001 Model PS-4151-6CF
>Output
>5V 17A
>3.3V 6A
>12V 4A
>5VSB 0.02A
>-12V 1A.
>
>165W Max Output
>
>

The 3.3 V makes it look like an ATX supply. Are you loading the 3.3 V too?
If you put a 5 Ohm 10 W resistor across the 5 V, and maybe a 5 - 10 Ohm
resistor of 5 - 10 W rating on the 3.3 V, it should work, unless the .22 A
load on the 12 V is too little. You might need more load on the +12 V.

Jon