Peltier powering

[tft]

I think I'm asking a question that has been asked a thousnad times before, but I looked on the main site and found only one article on it, and all it said was to basically get a new powersupply. Now, I know that you NEED a new PS to power the peltier, I was wondering if I could use one of the many old power supplies (AT) I have around to do this. I thought you might be able to modify the PS somehow and get enough current to power the peltier. I haven't bought one yet (a peltier) because I'm still trying to get my info straight on the subject. But when I get one, I'm getting a big one, like 200w or so.
If this can be done, or if anyone has done it, please let me know!
Thanks

 

[Hawkeye4242]

I used an old AT for my pelts on a Cel366...got it to 550. The downside is, NOISE! ,there isn't a very sano way to mount one, unless you fab something to screw it to the inside of the case, and the "resistor" (i think it was actually a diode) location differs from PS to PS. I plan on powering my three 72W and one 156W pelt with a DLS-45 from Iota engineering. It is supposed to be used to charge batteries on RV's....14.8VDC/45A continuous. Note: when buying a PS, always check the duty cycle (continuous, half-time, etc), continuous is the only number that matters in this application. I got mine drop-shipped from the factory, but they screwed up and sent me a second one from the retailer...(shhhh). Thought about diode-ORing them for 100% redundancy. Hope that helps a little.

 

[Silver]

I think I'm asking a question that has been asked a thousnad times before, but I looked on the main site and found only one article on it, and all it said was to basically get a new powersupply. Now, I know that you NEED a new PS to power the peltier, I was wondering if I could use one of the many old power supplies (AT) I have around to do this. I thought you might be able to modify the PS somehow and get enough current to power the peltier. I haven't bought one yet (a peltier) because I'm still trying to get my info straight on the subject. But when I get one, I'm getting a big one, like 200w or so.
If this can be done, or if anyone has done it, please let me know!
Thanks

Yes, at psu's can wired together in series or parallel I know there is an article on doing it. Link anyone?

 

[Diggrr]

Here's what your looking for. Pay close attention to the power resistor on the 5 volt line, the ohms are not as particular as having the high wattage one is. My dually supply has 2 ohm 25 watt resistors, so they barely get warm as they have heatsinks for cases.

If you can't fit them inside a case, you can dress them up somewhat to make them far better looking than the psu case allows. Here's a pic of mine in a custom case of cast aluminum, but a project/electrical box would be comperable.

Have fun man!

 

[Silver]

That's real purty diggr.

 

[Diggrr]

Thanks Silver. Now I just wish my machinist/friend would finish my new waterblock and coldplate, so I finally use it for my pelts!
I have one of those car jumper/air compressor combo thingies that I charge with it so it doesn't go to waste hanging around.

 

[Silver]

Got my cold plate in today. Am waiting on the pelt. Sent a note over to swift as two weeks is coming up. Site says one week before shipment. They send a note saying something to the effect that like the site said 1-2 weeks. Hmmmm, supposed to be reputable outfit so I'll hang and see.

 

[tft]

Thanks for the info guys.
Thanks for the link Diggrr, that's a really good article