Regenerative Enery Dumping Circuit

Discussion in 'Homework Help' started by bari, Sep 18, 2011.

  1. bari

    Thread Starter New Member

    Sep 18, 2011
    1
    0
    In the following circuit if there is a voltage created by the motor rotation then the BJT must be short circuited and excessive energy must be dissipated over 33 ohm. But something is wrong and i cannot activate BJT. I will really appreciate your help. ( I guess the problem is about the values of the resistances but i cannot find a way out.)
    [​IMG][​IMG]
     
  2. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    The circuit to drive the BJT is wrong.

    Post the whole circuit please.
     
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