I have a thermoelectric cooler that doesn't cool all too well, Is there a way to modify it to reach lower temperatures?
by 
davoomac
ANSWERS: 1
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TE cooler, or Peltier elements, are quite limited both in cooling power and in maximum temperature difference that can be achieved. To achieve lower temperatures, usually a few Peltiers are stacked, the cold end is well isolated, and the warm end gets a big heat sink (with fan, if need be). For a given TE cooler, two things will maximise the performance and thus minimize the cold side temperature: 1) get the warm side as effectively cooled as possible (heat sink) 2) use the precise drive current computed for the setup (ambient temperature and heat conductivity) to drive the Peltier. Both lower and higher (!) current will get the cold side warmer! Some ugly details and formulas: http://www.elecdesign.com/Articles/Index.cfm?AD=1&ArticleID=6325 http://www.overclockers.com/tips45/
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