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How to calculate R Values for op amp circuit

  1. Jul 6, 2011 #1
    282e2ao.jpg

    I need help calculating the R values for this circuit from the following article:

    AN HIGH RESOLUTION RESISTIVE PROBE FOR NONLINEAR ANALYSIS OF TWO-PHASE FLOWS
    L. Cantelli, A. Fichera, A. Pagano


    This is only a section of the circuit, there is more but I'm only interested in this part of it. I want to rectify a sinusoid and also to maintain a gain of 1. Has anyone come across something like this? There is an instrumentation amplifier before this but I'm not dealing with that in my project.

    Thanks.
     
    Last edited: Jul 6, 2011
  2. jcsd
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