Low-pass filter

Discussion in 'General Electronics Chat' started by Robert Harvey, Oct 24, 2007.

  1. Robert Harvey

    Thread Starter New Member

    Oct 24, 2007
    1
    0
    A low-pass filter with a roll-off rate of 60bB/decade is needed. The best combination is:
    1 a 2pole filter followed by another 2-pole
    2 two single-pole filters in series
    3 a 2-pole filter followed by a 1-pole
    4 none
     
  2. Mazaag

    Senior Member

    Oct 23, 2004
    255
    0
    Each pole contributes a roll-off rate of 20dB/dec.... so I would imagine you need a total or 3 poles....ie: choice 3
     
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