I am also trying to figure this out. I have an Abit Vp6 and I will be using 2, 80W peltiers. Here is the specs for one:
Potted Peltier rated @ 80W 8A 14.4V. Comes with Molex Connector ready to use on any power supply with a rating of 12V and 8A or more. PLEASE NOTE: IF THIS DEVICE IS USED WITH A POWER SUPPLY RATED UNDER 8A, FAILURE OR DAMAGE MAY OCCUR WITH THE POWER SUPPLY AND OR OTHER COMPONENETS! !! POTTED=EDGES SEALED WITH EPOXY FOR MOISTURE PROTECTION
My question is whether or not there is a Switching Power Supply on the market that will provide the ideal load for two of these Peltiers. In your case you just need to power one if I'm not mistaken. I just dont understand the power requirements in terms of Watts,Volts, or Amps. It says it's a 14.4Volt. Does this mean I can't go over 14.4v or do I want more? Same goes for the Wattage and the Amps, although it does state that I need over 8. But I need to know; How much over 8amps?
To top this off I will need to power two Peltiers and I'm not sure If I have to double the specs for a Switching Power Supply or not. So if someone could tell us how to choose a power supply based on the specs of the Pelt then in the future no matter what TEC we get we can determine what it needs to run at optimal load.
For example: Do I find a Switching Power Supply that is 20% over the total wattage of the pelt? While also being 20% more amps than required? While also providing 20% more voltage?(my use of 20% is completely arbitrary since I have no clue as to what the power supply needs to be.)
In response to bdf24's post, I have heard everyone say that you should'nt power pelts on the same psu as everything else. What if you have a 550W psu? Does that not put out enough amps? Is that the problem?
I know a lot of people have this same question because I see it all over the board. To the person that can answer these many questions....my deepest gratitude.
Some of the problems may occur with the amprage. But your main problem may be at bootup. When you post your pc is sucking lots of power. board, cpu, drives. Then throw a few peltiers in there. Which really suck alot of power. This could cause your system not to even start up. I dont think a 500w psu is going to have any troubles coping with two 80w peltiers though.
Although I did have troubles here and there running a 50w peltier on a 250w psu from time to time. My voltages would jump around alot. Mainly my 12v. Most of the time it would hover just under 12v. Which from time to time would cause the system to kick back out to the desktop while gaming. I have a V5 5500 AGP and they suck alot of power as well. But your psu is over two times the size. Just give it a try and see what happens.
And being rated at 14.4v's means they will run at top performance at that voltage. Which means if you run them at 12v's you wont get full use out of them. But you can run them at 12v's.