Micro P4ATX 200W (3 Screw SFX) Switching Power Supply
AC INPUT: 115/230 Vac~ 8/4A
60/50Hz DC OUTPUT :
COLOR : BROWN RED WHITE YELLOW BLUE PURPLE BLACK GREEN ORANGE DC : +3.3V +5V -5V +12V -12V
+5V-SB COM PS-ON PW-OK OUTPUT : 11.5/18.7A 16/13A 0.3A 11A 0.3A
2.0A RETURN REMOTE P.G.
(3.3V and 5V Max Output 120W, Peak Surge Max Output 208W)
Hello all, I'm having some trouble turning the above label power supply on. I.E. I'd like it to run outside of the computer. I'll be using this power supply to run a CNC engraver. The motors are three(3) 6vdc unipolar. I read elsewhere that I have to supply a small load across one of the red and com leads. Such as an old cdrom or 25ohm resistor. I really don't want to use the cdrom drive as it will increase the weight of my unit and I'm sure one of you guys are quite capable of creating a load that would be necessary to make this work.
The site below and accompanying text is the controller unit that drives the motors
I do have an older style AT box that will come on with the switch, but it seems to power down as soon as my three motors are running in unison. The fella at the site indicated below used 10ohm/10watt power resistors. How exactly he set them up is beyond me. He called them power limiters. I was assuming that the current draw from three motors running simultaneously (6vdc unipolar) would cause the power supply to shut down???????
Any help or a crude schematic would be extremely helpful.
Peace Neil