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Why diode is not demon of Maxwell?

  1. Sep 23, 2010 #1
    Diode should conduct electrons in one direction only.
    Why doesn`t it produce power at ambient temperature or any temp.?
     
  2. jcsd
  3. Sep 23, 2010 #2

    DaveC426913

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    Gold Member

    It merely conducts electrons (that are already present and under and electrical potential); it does not emit them.
     
  4. Sep 23, 2010 #3
    imagine it were an led
    As the electrons and holes recombine at the junction they emit light.
    the conduction electrons and holes have to be created somewhere.
     
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