Xandrios,
Red(+)/Black(-) go to the fan on the left
Orange(+)/Grey(-) go the fan on the right

I hooked them into a series by connecting the red and grey. Before I closed it up, I plugged it in to test. The fans only spin for a second and then stop. Then after about 8 seconds, the lights change as shown in the photo. I haven't checked but I'm assuming it isn't providing power.

I'm guessing I did something noobish here. I know I didn't follow your exact instructions, but the fans are still in a series as far as I can tell. Do I need to use a different 12V power source than the one it was originally on?

Originally Posted by xandrios

There will be 4 power wires that come from the fan combo unit. Red+ and Black- from one fan. Orange+ and Grey- from the second fan.. To wire the fans in series just connect the Orange and Black wires together. Then connect the Red wire to the 12VDC output. And connect the Grey wire to DC ground.. The PDF that you included also contains this information..

Did anybody find out how to limit the current on the DSP120 406424-001 / 226519-501 so that it doesnt shutdown because of overload? There are many potentiometers in it but wich one is it?

Thanks

Originally Posted by Kerbob

Xandrios,
Red(+)/Black(-) go to the fan on the left
Orange(+)/Grey(-) go the fan on the right

I hooked them into a series by connecting the red and grey. Before I closed it up, I plugged it in to test. The fans only spin for a second and then stop. Then after about 8 seconds, the lights change as shown in the photo. I haven't checked but I'm assuming it isn't providing power.

I'm guessing I did something noobish here. I know I didn't follow your exact instructions, but the fans are still in a series as far as I can tell. Do I need to use a different 12V power source than the one it was originally on?

Now you need to connect the fans directly to the main 12V DC output..You can get to the wires more easily at the other end of that wiring harness.. So the Orange wire will now go to the main +12V DC output. Check the Black wire to see if it is already grounded.. If it isn't then you need to connect the Black wire to DC ground.

Originally Posted by fastfastfast

Did anybody find out how to limit the current on the DSP120 406424-001 / 226519-501 so that it doesnt shutdown because of overload? There are many potentiometers in it but wich one is it?

Thanks

Did you check here: Lots of good stuff.

http://translate.google.com/translat...26prmd%3Dimvns

Thanks xandrios, I know that site
They have built an excellent conversion kit, but they have no information about all those trimmers inside (but the one with the silicone dot). There are many more! What else could these be used for if not for voltage trimming and overcurrent protection? Is there a way to find out?
have a nice evening

Xandrios,
That worked! It's half as loud but still not as quiet as I was hoping. Still worth the effort of the simple mod in my opinion. I wish there was a way to make it temp controlled and have it shut off completely when not needed. It looks like it has a temp sensor but, as you know, I'm no electrical person. With the total cost of this 1100 Watt power supply project at only $50, I really shouldn't complain.

Thanks again for your help!

Originally Posted by xandrios

Now you need to connect the fans directly to the main 12V DC output..You can get to the wires more easily at the other end of that wiring harness.. So the Orange wire will now go to the main +12V DC output. Check the Black wire to see if it is already grounded.. If it isn't then you need to connect the Black wire to DC ground.

So I was ordering several Dell AA23300 power supplies from eBay and the picture label they showed was that of a typical AA23300. The units that came in look exactly like the AA23300 but the label is different as is the number CN-0UG634. Has anyone come across this unit before and anything I should be aware of. Looks like no problem isolating the board ground to the chassie ground. While it is apart if anyone wants any additional internal pictures let me know.

hi folks,

i´m looking for a quiet psu (no fan at all or a really quiet one) that is happy to deliver a cuntinous 20amps at 13V minimum. got some server psu´s here but they are all loud as hell. so do you have any idea of a quiet one? i know there are some "fanless" ones around, maybe they can do 20amps with no fan or with a big and slow one attached to it?

any suggestions? thank you guys!

See my blog.
I have some fanless supplies that deliver just short of that.
17 amps at 13.4 if the POT is turned up from 12 volt or another of the same 210 watt supply but it can do over 14 volts (13.5 turned up all the way, I forget actual max volts) and 15 amps.

Rick

thanks for your reply rick but i´m in need of about 22amps at a stable 13(to 15)volts for a ham radio transceiver, thats also why it should be quiet. also i need to get it here in germany (postage from the us would hurt i think) so i thought about another server psu to get off ebay

Originally Posted by xandrios

Delta DPS-835AB, Artesyn 7001138-Y000, IBM x3650 3655 835W PSU Enable Pins.

Connect pin 3 to pin 4 to power up.

Slightly smaller than the DPS-600PB but has 20A more current.

The Artesyn model has a highly efficient electrical and thermal design.

It runs very cool for its small size. Great choice for portable use.

This PSU will not have the best voltage regulation if you use the connectors.

You need to solder the DC power wires/cables directly to the mainboard.

Voltage regulation will be near perfect once this is done.

A 5k pot between pin 17 and ground will adjust output voltage.

The fan will ramp up automatically with load.

Will also run without the fan so all fan mods will work.

The best way to find this PS is to search "IBM 835w power supply".

Is it difficult to lift the DC ground on this unit?

Not really difficult. You must drill out each of the 2 screw holes in the DC end of the PC board and isolate them top and bottom with non-conductive washers. The holes are plated through the board. Instead of drilling them you could use non-conductive screws and a washer under the board.

So I read a lot (but not all) of this thread and a few other threads. Is the Compaq HP ESP114 Series 12V 55A Power Supply still a good choice if size isn't a concern but noise is? I would plan to put two of them in series. I saw that the output can be floated... Or are there more recently "discovered" supplies that are easier to work with (use normal power plugs, etc) that are equally quiet?

...

Hey guys
I was wondering if anyone could help me get these supplies running for my battery charging station.
I have two I bought ,both for a HP Proliant DL580 G5 ..power supplies part numbers 440785-001 and 441830-001 HSTNS-PD11
I have converted a bunch of pc ones,but I am not at all familiar with these.
Are the pinouts gonna be the same as the one xandrios posted for the g3?
what do I need to do to have it fire up and stay reliable .
Any info would help.
I know just enough to be dangerous!.
here is a pic of them

John
Great Thread