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Old 8th June, 2005, 09:52 AM
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Put an end to this arguement

I'm not going to bias the wording here. I have a pelt rated at 24V and xxamount of amps. Now, can I run this pelt off the 12V rail of a PSU, will it function safely that is. Though dramatically underpowered, will it still cool quite well?

(I'm in an arguement with my friend on whether or not these are right or wrong)
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Old 8th June, 2005, 10:40 AM
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I would doubt it. It may work to some degree but it would perform terribly.
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Old 8th June, 2005, 05:23 PM
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The amount of power you can move with the peltier is a function of the amount of power you put into it. However, if I remember correctly, it is an inverse-square type relationship, meaning that cutting the input current in half (which is the likely result of cutting the voltage in half) will result in a 4-fold decrease in cooling.

So, the answer to the first part of the question is, yes, it will continue to function. The answer to the second part of the question is, 'it depends'. The reason is because it all depends on the heat load. If the thing is barely keeping up with the load now, reducing the voltage isn't going to help, and will probably make it a lot worse.
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Old 8th June, 2005, 07:53 PM
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thanks guys. always on my side here, even if ya don't know it
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