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HP DL380 power supply conversion

by jsaffer, published

HP DL380 power supply conversion by jsaffer Aug 27, 2012
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7222Views 773Downloads Found in R/C Vehicles

Summary

Recycle an old HP DL380 G2 server power supply into a bench/hobby power supply.

Instructions

After modifying your recycled power supply to be always on, just print, wire up female bullet jacks, and you have a tidy looking 12V 32A power supply. Hold the 4mm bullet females in with set screws or hot glue.
My 4mm connectors had an outside dimension of 5mm w/ a 5.5mm shoulder.
I've created an additional version for people with 4.75mm connectors without a shoulder(much more common)
4mm M/F sets are available at any online or local R/C hobby store
Both version have an outer lip that should retain the outer edge of any 4mm connector.
Keep wire length to a minimum to avoid fan contact.

Fits HP DL380 Generation 2(ESP113) possibly others.
Mod info
http://www.rcgroups.com/forums/showthread.php?t=358340

For a stand to hold your battery charger on this power supply http://www.thingiverse.com/thing:29298

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I think I will mod an on/off switch into this and a pot (per the schematic) to control the fan speed.

Wanted to see if you did anything to reduce the noise of the fan. Currently, I put two 1/2 watt 47 ohm resisters in parallel with the red lead on the fan. I found that if the value is too high, the power supply will not detect the fan and will not power up. This seems to cut the fan speed by half.

No, I've never attempted to do anything to limit the fan noise.

Thought I would share this too.

PIN# FUNCTION DESCRIPTION
1-8,37-44 RTN Power and Signal Return
9 SPARE Spare position (No connection) (This shows FRU LED on the design Doc)
10, 12, 14, 16, 18,20,22, +12V + 12V Output
24,26,28,30,32,34,36
11 RS RTN Remote Sense Return
13 +12VRS + 12V Remote Sense
15 PSON# Power-On Enable Input
1
7 HB Hard Boot Input
19 12LS 12V Load Share Bus
21 DCOK +12V Output OK Signal
23 PS KILL Power Supply Fast Shutdown Input
25,27 29 5VSB +5V Standby Output
31 -12V -12V Output
33 FANV Power Supply Fan Voltage Input
35 PRESENT# Power Supply Present Signal

Can you recommend a source and part number for the female connectors? Great thing, just ordered 4 of these PSUs and can't wait to print out!!

The new revision I uploaded should work with almost any 4mm female sleeve.

The polymax 4mm I have on hand would fit the new version pretty well.

In the end source whatever you can locally, you can just glue or/and screw the backside, the front side will still look clean.

If you don't have anything locally, it looks like the 4mm venom (VNR1632)connectors at http://amainhobbies.comamainhobbies.com would work.

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