Need help psu moddings

[Nebulous]

Hiya guyz, need some help here. I have a peltier chiller.These are Peltier chiller cores pulled from medical laser chillers. Each unit uses 10, 55 watt Marlow industries peltiers.

Power requirements @ 12v dc are somewhere between 450-550 watts. You can however run these at a much lower voltage depending on your needs. No matter how you cut it you probably wont be able to run this thing off a single ATX PSU. You could use multiple ATX PSUs or just find something on eBay.

Performance:
According to the manufacturers specs the chiller can take 210 watts of heat down to ambient, 135 watts 10c below ambient or 95 watts 20c below ambient.

Airflow:
The fans very quiet Papst 12v 94 CFM. http://www.alliedelec.com/cart/part...tNumber=6004100

I have 2-500w Powmax psu's and the rails are:
5v @ 30a
12v @ 25a

I need a minimum of 50amps @ 12v DC to run my chiller. I was told i can run them both so it would be 12V DC @ 50amps.

What I'd like to know is how to run both psu's to get the 12v at 50 amps. I'm really rusty at the paralelle/series circuitry soldering. I haven't done this type of thing in over 25 years.:ROTF:

Can anybody help me with a color coded wiring diagram? Any help is greatly appreciated!! :D

This are pics of the chiller:

http://members.speedguide.net/lt73/core1.jpg
http://members.speedguide.net/lt73/core2.jpg

[Nebulous]

Anybody?:confused:

[Ruantic]

THIS (http://www.procooling.com/articles/html/sharing_the_load_between_psu_s.php) might help you...

[Hell-Fire]

Also check out this Thread about hooking 2 psu's together:

http://www.xtremesystems.org/forums/showthread.php?s=&threadid=16923

[Nebulous]

Tanx guyz :(

Ruantic, that diagram and the way the guy explaind it, i have no idea what he was talkin about.

Hëll ‡ Fîrë, yeah, I already saw that.

Appreciate the help tho.

[TheWeaseL]

Ok, this might not be a big help, but if I remember correctly, if you wire in series, you'll get 50 amps, 25 + 25, whereas if you run in parallel, you'll get 24v @ 25 amps...

[Ruantic]

Originally posted by TheWeaseL
Ok, this might not be a big help, but if I remember correctly, if you wire in series, you'll get 50 amps, 25 + 25, whereas if you run in parallel, you'll get 24v @ 25 amps...


Actually its completely opposite, series would be Voltage1+ Voltage2 Paralell would supply the increased current at same voltage....


Ruantic, that diagram and the way the guy explaind it, i have no idea what he was talkin about.

basically just build the circuit, and connect it, if thats what you need....