BJT Differential pair question

Discussion in 'Homework Help' started by uofmx12, Sep 28, 2011.

  1. uofmx12

    Thread Starter Member

    Mar 8, 2011
    55
    0
    [​IMG]

    Nodes C and D have slightly different voltages(I measured). What is a real-world explanation for this?
     
  2. t_n_k

    AAC Fanatic!

    Mar 6, 2009
    5,448
    782
    Resistor tolerances, mismatch in the BJT characteristics (e.g. β), difference in temperature at either Q1 or Q2 die......
     
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