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Homework Help: Simple question about KVL Equation in a BJT Circuit

  1. Sep 17, 2011 #1
    1. The problem statement, all variables and given/known data

    I am trying to find the KVL equation for this BJT in order to find Ib.
    http://www.ece.auckland.ac.nz/oasis/a/att/qtatt/2028/2/261/IM010 [Broken]

    2. Relevant equations

    3. The attempt at a solution

    My current equation looks like this.
    Vcc - IcRc - IbRb - Vbe = 0

    I am not entirely sure if this is correct.
    Last edited by a moderator: May 5, 2017
  2. jcsd
  3. Sep 17, 2011 #2

    rude man

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    1. Is the drop across Rc really just IcRc? (Hint: you're close, but no cigars).
    2. More importantly, what is the relationship between Ib and Ic for a BJT?
  4. Sep 17, 2011 #3
    I just thought about it.
    The base current and collector current equals to the emitter current.

    So, the drop across the Rc is actually IeRc?
  5. Sep 17, 2011 #4

    rude man

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    Yes. Add the IbRc term to your original equation, don't use Ie.

    Now for part 2?
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