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Homework Help: Lower and upper cutoff frequencies

  1. Nov 22, 2008 #1
    1. The problem statement, all variables and given/known data

    i have values of input signal frequencies and relevent voltage gains(Av) of a amplifire.and i want to find upper and lower cutoff frequencies by drawing a graph.can someone tell me how to find upper and lower cutoff frequencies with following values.

    here is values


    Attached Files:

  2. jcsd
  3. Nov 22, 2008 #2
    the cutoff frequency is the -3 db point (squareroot of 1/2 of the passband voltage). Take the highest point and assume that is the zero gain point and go down -3 db. You'll have to Interpolate between some values.
  4. Nov 22, 2008 #3
    can you please explain this with given values? i mean with gains given.thanks
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