Tiny PWM controller for TEC.. Need some.

[NotSoCoolJ]

I was actually thinking of just a single can arrangement. You know, I was thinking of making it look like an old Coke machine. Just enough room for one can. I was also planning on direct contact with the can and TEC, possibly using some water in the bottom of the fridge maybe a half inch deep. I want to be able to cool a can quickly. 15 minutes is a long time when your thirsty.

Your comments about the TEC in general make me think I've got the wrong idea totally when it comes to power requirements. I was under the impression that if I used more voltage the amps would be lower. It seems these are current driven devices though.

That means I can spend a lot less on the power supply then.

This is the module that I had in mind.
http://www.allelectronics.com/make-a...OOLER/-/1.html
Do you think a 50watt would get it done?
Ebay is nice and all but I hate buying things there. It always feels like a gamble.
I do have 3 defunct power supply units here and one that works but I don't trust it with my equipment since it is a cheap Coolmax. I have already raided some of the parts like the X2's and some capacitors, but they all still have the transistors intact. My wife hates the fact that I wont throw out old broken computer parts. Every time I recycle a part I make sure she knows

So I thinking of a parts list. Just to get something down. If you see any problems or omissions let me know.

PS. 12v-5amp. Any ideas where I could get these for cheap? I suppose I could build them but with only a radio shack available here It could get fairly costly quick.
N-MOSFET. The EG ones look good enough for 1.50 a piece. I could pull them out of the PS I have here but that would require work.
Thermistors. http://www.goldmine-elec-products.co...p?number=G2005
With these the resistance goes up when the temp goes down. Will that work?
Clock Hmm. Maybe I'm dense but I don't see what the difference in a 555 vs a 556 in this application. This is all new to me. Will I need a dual timer?
That PWM fan controller is starting to look tasty. I have a bad Motherboard here with fan control. Maybe I can recycle them.
Various resisters and capacitors I have on hand. I even have a few cermet pots lying around here somewhere. Probably the wrong range but we shall see.
I have a true RMS meter with a K-type. So temp calibration shouldn't be a problem.
The schematic you linked. looks fairly easy compared to this whole getup I'm trying to get into. It should be small too.