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Active Filter: Butterworth 18dB Lowpass

(3st order, 18 dB/octave, Lowpass)

3st order Butterworth Highpass

R=4.7k-10 kOhm
Ca=2.000/(2*pi*Fc*R)
Cb=0.500/(2*pi*Fc*R)
Cc=1.000/(2*pi*Fc*R)

Units: R [Ohm], Cx [F], Fc [Hz]

Contributor: Joakim Ögren
Source: ?

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Document last modified: 2002-01-10