Originally Posted by Krow
I don't think you should. You may not know this but there is the 12706 on the TEC. This is how many couples there are in the TEC, followed by the amount of current the TEC can take at maximum voltage. In this case 6A at probably 15.6V. If you run at 15V, you're going to need much more than 2A on a PSU.
Thank you for the advice, but as usual, my "stubborn" ...search for the truth has right of way!Well, I just did it
... and here's what happened: the 15V dropped to 11V3 and the 2A increased to 3A.
At first I was surprised that the switching PS can take it, but after only half an hour it got very hot. A bit longer and it would burn out.
Luckily I have a heavy transformer (use for those HALOGEN lamps) lying around, able to deliver 11V at 3A to the TEC unit.Back to my senses:
But, finally I came to realize that you were right: the higher the voltage the more Amps are required and that blows the whole project out of proportions.
In other words there's isn't much gained with increasing its power.
So, I reconnected everything back to the original power configuration. In addition to that, I poked 1000 holes into the PS casing to allow plenty ventilation.
The last days it got pretty warm, because its plastic casing was totally closed.Edited by jjj333 - 9/25/13 at 5:19pm