sallen-key-filter

Discussion in 'General Electronics Chat' started by nuflia, Jan 26, 2011.

  1. nuflia

    Thread Starter New Member

    Nov 18, 2010
    10
    0
    any one could give me an idea how this circuit works,, and what means by Q in the filter , the circuit is sallen-key filter
     
  2. nigelwright7557

    Senior Member

    May 10, 2008
    487
    71
    Sallen and Key is usually a low pass filter or a high pass filter.

    The resistors and capacitors make a potential divider varying with frequency.

    There is a peak before the -6db point in the filter response and how peaky this is varies with Q.
     
    Last edited: Jan 26, 2011
  3. Jaguarjoe

    Active Member

    Apr 7, 2010
    770
    90
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