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#1
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Another Peltier question...
Hey guys I have another question about peltiers, more about powering
them actually. I am looking for a fairly small power supply to run my peltier off of, the peltier specs can be found he https://home.comcast.net/~edmonchau/...pic/dt12-8.pdf I have found this power supply: http://cgi.ebay.com/ws/eBayISAPI.dll...55427 82&rd=1 it looks like a pretty decent item for my usage. Is there any reason I couldn't use this with my peltier? Or if anyone has any ideas for a small power supply to use I need to hook up 2 peltiers to the power supply. I was thinking of just hardwiring this power supply, possibly just opening my PSU and soldering some wire to the AC plug connectors? TIA -Chris |
#3
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OK then which one of these would you suggest?
http://www.kepcopower.com/rkwo-mod.htm I can get a enclosure for the top so it is not open frame. I know very little about voltages and such, I would like to learn more if you could possibly suggest a good place/way to learn? Like I said I am going to run the two peltiers off the same power supply. However they both will NOT be running at 100% I am going to turn them down so they cool, not freeze. |
#4
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On Tue, 13 Jul 2004 20:29:13 -0600,
wrote: OK then which one of these would you suggest? http://www.kepcopower.com/rkwo-mod.htm I can get a enclosure for the top so it is not open frame. I know very little about voltages and such, I would like to learn more if you could possibly suggest a good place/way to learn? Like I said I am going to run the two peltiers off the same power supply. However they both will NOT be running at 100% I am going to turn them down so they cool, not freeze. Their power supplies (at least those on page you linked) max out at 150W. Running a pair of the peltiers you linked will require a larger (than 150W) power supply. I'd suggest something with at least 14A output. You write that you will turn them down, but with what method? It's conceivable that if you reduced current enough, a single PS like you first linked would work. The power supply itself will only allow adjustment down to 13.5V, so taking that 13.5V you can see how much current is needed from the graph on the pletier spec sheet. Using that graph you could determine how high the voltage could go and stay within any given power supply's spec, but I can't predict how much cooling you'd need for your application. There are a number of variables that only you can consider. Things like the allowable size for this power supply, assuming it "must" fit inside the system case rather than being external. If you could settle for an external PSU, and @ 12V, you would certainly have more power than needed with this: http://www.mpja.com/productview.asp?product=13549+PS . but you'd definitely want to fab a cover for it, to isolate the input power. I don't often run across ~ 15V power supplies, at least not though channels where they'd be reasonably priced (affordable). Here's more examples of 12V supplies that're a bit more finished for inside-case use, http://store.yahoo.com/davidandkarma/meansp12vol2.html http://www.mpja.com/productview.asp?product=15078+PS http://www.excess-solutions.com/POWERSUP.HTM (search page for "ES3096") Well, there was one 15V that looked promising on ebay but I have no idea if it would fit in your case: http://cgi.ebay.com/ws/eBayISAPI.dll...7391 685&rd=1 |
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