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Homework Help: Signal at output using transfer characteristic

  1. May 18, 2014 #1
    1. The problem statement, all variables and given/known data
    Find the output signal for an amplifier with transfer characteristic:
    vO = 10-10-11e40*vi
    output bias of 5V
    input bias of 0.673 V
    and an input signal of 1 mV superimposed on the bias

    2. Relevant equations
    vO = bias out + signal out
    vI = bias in + signal in

    3. The attempt at a solution
    I plug in .673+0.001=0.674 for vi (signal in) and get 4.888 for vO. I then take 4.888-5= -0.112 V for signal out. Book answer is -.204 V...
  2. jcsd
  3. May 19, 2014 #2


    User Avatar

    Staff: Mentor

    Did you check to determine what output the amplifier's equation gives for input of 0.67300 volts?
  4. May 19, 2014 #3
    Thank you, I needed to include more digits when solving for the input bias.
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