Evaluating an inverting op-amp circuit

Discussion in 'Homework Help' started by Pepjag, Nov 21, 2012.

  1. Pepjag

    Thread Starter New Member

    Nov 21, 2012
    I need some help evaluating an inverting op-amp circuit that has a bridge circuit at the input side. I have only had half a lecture on op-amps and my textbook does not help at all. First, I have to obtain the Thevenin equivalent at the a and b terminals and use that equivalent to obtain an expression for G=Vo/Vs. Then, I have to evaluate G for R1=R4=100 Ohms, R2=R3=101 Ohms and Rf = 100k Ohms. The only thing I pretty much knew how to do is get the equivalent resistance but everything else is completely baffling me. If I can get help getting the expression for G, I think I can finish the problem but any assistance will be appreciated. The circuit is attached.
  2. Jony130

    AAC Fanatic!

    Feb 17, 2009