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Cut-Off Frequency

  1. May 28, 2012 #1
    How do I work out the cut-off (corner) frequency of a Low Pass Filter?

    I know the equation is fc = 1/(2∏(fn)RC)

    but I have 2 op-amps in the filter both with different fn's, R's and C's

    is it simply calculate each part separately and add the 2 values together?

    Cheers
     
  2. jcsd
  3. May 28, 2012 #2
    Show as the circuit diagram
     
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