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Old Jul 02, 2010, 04:59 PM
30 RC's and counting
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Quote:
Originally Posted by himagain View Post
WARNING........ If you make a 24v ps out of two of them make sure that the two cases don't touch each other or you will short them out...... Boooooom
Thank you for that information.
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Old Jul 02, 2010, 06:35 PM
30 RC's and counting
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Atlanta, GA
Joined Mar 2005
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Man, I don't think that could have been any easier.

One PS says 11.97V, other says 12.00V.

Here's a picture of the first one I did.
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Old Jul 09, 2010, 06:15 PM
KB3VOJ
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re

Here is my final product. Works great. Anyone turn these into a 24V supply yet?
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Old Jul 11, 2010, 12:05 AM
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Is that liquid tape?
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Old Jul 11, 2010, 01:09 PM
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No, it was a type of electrically safe silicone that they sold me at the electronics store to cover the circuit board. I just waited till if fully cured to turn on as I thought if any moisture was still present might cause an issue. Works great though.

I have been following the 24V PS posts, but most seem to think it is a very bad idea to float the ground on the second PS in series. Just wondering if anyone has taken this HP PS yet and tried it. I have a second one sitting around and if I can do it safely, I would love to have the extra power to charge more 6S5000 packs simultaneously on my 3010B 1000W charger that can handle a 25V supply.
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Old Jul 11, 2010, 02:16 PM
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Haralson County GA. USA
Joined Oct 2004
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If you have read the Threads(post) then you know it will work and the possiblle dangers. Any power supplies can be used in series if you prevent them from sahring a common ground. On the other hand a metal case without a true earth ground can become electricaly hot and deliver a most unwanted shock.

Charles
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Old Aug 01, 2010, 09:12 PM
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Wellington, NZ
Joined Aug 2006
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Quote:
Originally Posted by himagain View Post
Hi Guys

Ive managed to get one of these power supplies powered up and working ok.

Its rated at 32A and I've had it running at 20A without it getting warm at all

Heres the solution ,

- Simply connect the 3 pins in the photo to ground. There are 4 grounds/negs, these are the ends of both sides of the boards.

- The 12+ is the long middle section on the top

- Connect all 4 grounds together and this is your negative

- Cover the pcb with "Magic Plastic" to prevent any shorts

And your done

Any questions give me a shout

Enjoy

David
Thanks, David. I think I can get one of these so your info will be invaluable.

Lindsay.
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Old Sep 14, 2010, 02:06 PM
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Thank you for posting this, I just came across 20 or so of these getting tossed at work.

I love it when we retire servers.
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Old Feb 23, 2011, 10:04 PM
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United States, LA, Monroe
Joined Mar 2009
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Here's how I did mine. I wanted the wires soldered going into the case to minimize being pressed on in my storage box.




I've since covered with non-conductive silicone to seal the open blades.

I tested and get 12.2v under no load. Dropped to 11.7 under load charging 22.4volt battery at 11 amps (drawing 247 watts)
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Old Feb 28, 2011, 01:31 AM
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Quote:
Originally Posted by Rogman88 View Post
Here's how I did mine. I wanted the wires soldered going into the case to minimize being pressed on in my storage box.




I've since covered with non-conductive silicone to seal the open blades.

I tested and get 12.2v under no load. Dropped to 11.7 under load charging 22.4volt battery at 11 amps (drawing 247 watts)

Hi there

Mine doesnt lose its voltage under load at all. Looking at your picture it looks like you didnt common up all the negatives (top and bottom)

This might be help

David
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Old Apr 08, 2011, 09:44 AM
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How the hell are you guys figuring out which pins to jumper/short/link???
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Old Apr 08, 2011, 09:51 AM
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Most take the easy way out and use ones which have already been hacked.

Thread here has a lot posted. Please note that the Thread is a reference thread with only proven how tos to be posted in it.

http://www.rcgroups.com/forums/showthread.php?t=1292514

charles
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Old Apr 08, 2011, 02:46 PM
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United Kingdom, South York
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Quote:
Originally Posted by Richardmid1 View Post
How the hell are you guys figuring out which pins to jumper/short/link???

Richard.... Magic

I worked this one out from a pinout I found on the HP server site. Just a matter of understanding what the pins are, having a go at it and a little bit of luck

Enjoy

David
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Old May 11, 2011, 05:01 AM
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Czech Republic, Hlavní město Praha, Prague
Joined Oct 2010
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I have 4 these units, any idea if they can be connected in series easily?
DC ungrounding preferred.
I did not looked inside yet, is there any pot for voltage adjustment?
Thanks.
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Old May 16, 2011, 12:38 AM
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Joined May 2011
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2 Server PS ESP 113 in serie

Here my solution for 2 ESP 113 in serie (not yet completed...)

Fix the power supply with plastic bolts, so you isolate the ground to the case.

The AC ground (110/230V) you can connect with the case...
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