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Homework Help: Alternating Current Circuits

  1. Sep 25, 2013 #1
    1. The problem statement, all variables and given/known data
    part 1. at what frequencies will the circuit act as a differentiator?
    part 2. interchanging R and C of figure D produces a low pass filter. At what frequencies will v_out/v_in = .95?
    part 3. at what frequencies will the RC circuit of problem 18 act as an integrator?
    part 4. design a low-pass filter that has v_out/v_in =0.5 at 5kHz
    part 5. for the cicuit that you designed in problem 20, at what frequencies will v_out/v_in equal .01 and .99?

    2. Relevant equations

    3. The attempt at a solution
    I have completed part 1 but I am having issues in understanding where to begin for the other parts of this problem. I have attached my work and as well the circuit. any help would be greatly appreciated! thanks pf!

    Attached Files:

    • pf.jpg
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  2. jcsd
  3. Sep 27, 2013 #2


    User Avatar

    Staff: Mentor

    For part 2, you analyze the low pass filter as a potential divider, not overlooking the j term in capacitive reactance.

    v(o) / (in) = vC / ( vR + vC ) = 0.95
  4. Oct 1, 2013 #3
    Thank you nascentoxygen!
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