COnverting Server Power Supply - EMERSON
I was able to get a couple of these power supplies and would like to convert them.
This thread has been very helping but I still need a little more help to get it to work fully.
The power supplies are: rated at +12.v ---- 55.0A MAX
at +3.3Vco -- 0.2A MAX
EMERSON Module 7001484-J000 or
These were removed from IBM X-Servers.
I have attached a image of the connections 8 signals top /bottom
01 02 03 04 05 06 07 08 P-P-P-P-P-P-P-P-P <--Top
09 10 11 12 13 14 15 16 p-p-p-p-p-p-p-p-p <--Bottom
if I short 07 and 15 the fan starts but as soon as I place any real load 2amp
or more the power supply shutsdowns. I do get a reading from the power pins between 12.2 - 12.4
when I try to get readings of these pins these are teh readings:
01 02 03 04 05 06 07 08
G 4.2 G G 4.8 G G G G = reading 0.0 V
09 10 11 12 13 14 15 16
0.2 G 0.2 G 0.1 4.6 4.6 4.6
Electricity is not my thing, understand the basics
ANy help or suggestions on what to try or how I can determine the pins would be greatly appreciated.
Some computer power supplies require a sizable load on the 5 volt line for proper operation.
I use 3 or 4 10 Ohm, 10 Watt resistors, all in parallel connected across the 5 volt line -- between the red and black wires. Hope this helps..
You mite want to go to www.wikihow.com/convert-a-com...b-power-supply pretty good article , should be all you need .
thanks, that site focuses on ATX power supplies I am trying to convert a server power supply. seems to be just enough diferrent.
Does anyone know ow to test the pins and what pins based on voltage I should try to jump?
I seem to be missing a third one to keep the load.
there are some good threads here for the HP server PSU's
Hi, I also have one of these PSUs here and no idea about the pinout.
Is there something new you have found out pluto_26?
A better place to look.
This thread may be more informative to your questions
I've figured it out. Top row, pin 1 and 2 and you will have stable 12V output.
I've just tested it with 2 chargers, each 150W, no problems so far.
Many greetings from Germany
"Top row, pin 1 and 2"...do you short them together?
Connect with a resisitor?
Find 12V across the pair?
I finally got the stones up to try shorting upper pins 1 and 2 together, and sure enough, the LED labeled DC turns on (on the back), the fan turns on (very low) and there is +12V on the large copper pin, on the topside of the connector. Ground is at the large copper pin on the underside of the connector.
Right now I am charging four 3S batteries in parallel, at 12A with no apparent problems.
I think I'll put a small switch between pins 1 and 2, to use as an off/on switch.
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