Common Base Amplifier

Discussion in 'Homework Help' started by jegues, Apr 9, 2011.

  1. jegues

    Thread Starter Well-Known Member

    Sep 13, 2010
    735
    43
    Can someone make sure if I'm doing this right? Am I able to solve for re somehow? Or can I just neglect it due to it being so small?

    Also, I have no clue if I did the part where I have to calculate the peak voltage of the source and at the output? Am I doing this correctly?:confused:

    Thanks again!

    See figure(s) attached for problem statement as well as my attempt.
     
  2. t_n_k

    AAC Fanatic!

    Mar 6, 2009
    5,448
    782
    I would have assumed re≈25/Ie(mA)=25/.25=100Ω.

    This would mean with vbe=10mV that ie=100uA meaning vsig=1100*100uA=110mV

    With a gain of 5000/1100=4.545

    this gives vo=500mV
     
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