How to build a $20 47A power supply

[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

[Nard Cox]

I like it :)

http://cgi.ebay.co.uk/ws/eBayISAPI.d...=STRK:MEWAX:IT

reckon that will be any good to convert?

[whitrzac]

I had a diff. server supply(53amp max) loaded with 45ish amps, took 7 chargers to do it, but it was still putting out a stable 12.22v

[Gee]

Originally Posted by brushlessboy16

Will do Alien, Progress pics. Got them Wired up, and all the startup wiring done so the thing actually arms...
Great guide for the HP #194989 and HP #280127 can be found here:

CLICK ME
Have yet to put a load on it, or plug it in yet, need connectors to go to my load of choice (700watt amp and dual 8in subs)

They are complete

Thanks Ben for pics with these type of supplies. I got similar ones just have Compaq on them instead of HP. I had just taken some pictures and was going to post them to see if anyone could help. Nice job and thanks for sharing Everyone.

There should a good selection of used power supplies hitting ebay shortly.

[radioman193]

Nothen like usen "500Watt" to produce "50Watt"..... LOL

[nitrostarter]

Got my HP sserver p/s the other day. Just soldered it up. It works great on my sound system in the shop.

[snellemin]

Pics of the powered sound system?

[snellemin]

Charging a 4s @32A with the Powerlab + 20 dollar PSU. 8awg wires were at 121F during charging.

[nitrostarter]

Originally Posted by snellemin

Pics of the powered sound system?

Nothing special, just a cheap sony radio/speaker combo, 250w amp and a 8" sub.

[RC toy]

If connecting two power supplies in series is so dangerous, how the hell maxamps did that???

[RacerMike42]

like RC Toy mentioned above I am surprised no one has mentioned this has gotta be the same power supply that Max Amps is selling for $80,
http://www.maxamps.com/Power-Supply-12V.htm

Thanks to the thread starter for posting this, I had been browsing around looking for a new power supply and came across this thread. I picked one up off of ebay for $15 + $12 shipping
Had I not seen this I was about to buy the Max Amps one.

[brainanator]

there was a thread when the maxamps PS came out pointing out that they were the same thing ;)

[RacerMike42]

Cool, well I am glad I found out just in time. I got my ebay PS today, cant wait to get it hooked up ;)