Help with circuit calculation

Discussion in 'Homework Help' started by asamlich, Jun 7, 2011.

  1. asamlich

    Thread Starter New Member

    Jun 7, 2011
    1
    0
    Hello, I have the following circuit, http://imageshack.us/photo/my-images/30/help2c.png/

    I want to write Uut(t) as an expression of U(t),

    Uut(t) =(h21 + 1)*IB2* ((r6*RL)/R6 + RL)

    Ugs = U(t)

    Now I want to express IB2 as a function of Ugs. As seen gm*Ugs is current out from the node, but Im not sure how much current will go through, RD,R4 and R5 to get IB2.
     
  2. t_n_k

    AAC Fanatic!

    Mar 6, 2009
    5,448
    782
    Here's one possible approach ....
     
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