How to build a $20 47A power supply

[BrianG]

http://www.rc-monster.com/forum/showthread.php?t=3962

Whether those PS units will work or not depends on how much current is available on the 12v line. The power rating is for the 12v, 3.3v, and 5v rails combined, so the 12v rail by itself will be somewhat lower. There should be a label on the case somewhere that states the current for each rail.

[florianz]

Hi guys,

I finally got the server p/s like pictued above. The question is, how to get power.
With an old servo plug I got at least the fans running, running slowly.

But no power yet. Then I tried to connect some of the pins to the big plugs. And hey, I got some volts:


The fans are completely on now,and pretty loud too.

Detailed view on the pins

like that, I get the power finally on.

but what is what, here some pics




so I think, the top three are minus/ground, the lower three contacts are plus.

I got my degree on the MIT, still I need your help
I think I am on the right track. So I can solder three plus/minus cables? in total?

When I am right, I just got a very powerful p/s for just USD 3,47, not quite expensive for about 1000 watts...

Of course I will replace that bloody screw.

Thanks a lot for your input!

florian

[florianz]

Hi there,

got it finished. I have changed the fans, the new ones are very quiet. soldered some wires, cleaned inside, not that much to do.



Sufficient charging power for three chargers. costs: less then 15 usd in total.
florian