PSU for 126 w peltier

[ookabooka]

I really don't want to have to spend a lot of money on the PSU, even though it will be the most expensive part of the cooling system. Would it be possible to get a 400W or so computer powersupply and use that? my 300 W provides 12v at 10 amps. Thats kinda low, the peltier can take 16v at 24 amps. What would be the best and cheapest powersupply for a 226w peltier?

[MyEpoxDied]

http://becooling.safeshopper.com/26/159.htm?417

That is pretty cheap, or you could get some at psu's and put them together.

[Since87]

Originally posted by ookabooka
What would be the best and cheapest powersupply for a 226w peltier?

Powering it with more than 12V will just waste power.

At 12V it will draw about 19 Amps. Any supply rated for 12V and 21+ Amps would work. If you find a supply that doesn't come with a fan, you will need to provide air cooling.

Look at Ebay:
Power Supply (http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1384333195)

[daleorama]

Try a Powmaxx 400 watt PSU. It isn't so hot for overclocking because it's 3.3 and 5 volt rails are about as strong as a 300 watt, but the 12 volt rail can deliver 25 amp. It's cheaper than most other 400 watters. Look on pricewatch or ebay.

[kchip]

Are you saying this PSU ( http://www.buypcdirect.com/product.asp?pf_id=PM400W ) will work for 226w Pelt? Its only $20. So I could use a Molex plug , and plug into a 12V line ?

[Since87]

Yes, it should be possible to make that supply work.

I wouldn't use the molex connectors though. I doubt they are rated for that much current.

I would cut off a Molex Connector and solder the +12V and Ground wires directly to the pelt leads. If you need longer lead length, solder 16 gauge wire or heavier to the PSU wires and then connect the 16 gauge wires to the pelt.

[DrMac]

Are you sure of the 16V@24amps? That's 384W!

[Since87]

Originally posted by DrMac
Are you sure of the 16V@24amps? That's 384W!

The specs I've seen for 226 Watt pelts are:
Vmax = 15.2 Volts
Imax = 24 Amps

I doubt that anyone can actually benefit from running these pelts above 12V though. You would have to have phenomenal watercooling to get better CPU temperatures at 15V than at 12V.

[kchip]

Thanks for the tips. For $30 shipped , its wortha try.