How About This To Power A Peltier / Tec

[lebe0024]

13.5 W 20 A 19.95!

MPJA (http://www.mpja.com/product.asp?product=12788+TR)



OOPS nevermind. It's AC to AC. CRAP

[ssjwizard]

that looks like it would actualy work pretty good.

[mfpmax]

I've got a better one...

Its about 30-40 pounds, and used to power a 1000watt audio amplifier...

[strokeside]

The transformar gives out AC current, you need DC, so you could just put a rectifying bridge after ti and it should work fine.

[Since87]

The rectifier alone would give you "DC" current with an enormous amount of ripple on it. The manufacturers say that TEC's shouldn't see more than 10% 60Hz ripple. A rectifier alone would give you 100% ripple. You would need enormous filter capacitors, to filter the output of that tranformer down to 10% ripple. These caps are expensive. See this thread. (http://forum.oc-forums.com/vb/showthread.php?threadid=122907)

The second problem is that the output voltage rating on that transformer is 13.5 Vac RMS. The peak voltage of the output sine wave will be at 19 V. A rectified and filtered DC voltage produced with that transformer will be around 18V. If you are powering a 172W 24V TEC with this system, 18V is not a bad operating point. You definitely don't want to use this with a 226 Watt TEC though.

A switching supply is the way to go for this.

[{PMS}fishy]

How about this one for you?

http://www.mpja.com/product.asp?product=14116+PS