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Active Filter: Butterworth
(2nd order, 12 dB/octave, Lowpass)

2nd order Butterworth Lowpass

R=4.7k-10 kOhm
Ca=1.414/(2*pi*Fc*R)
Cb=0.7071/(2*pi*Fc*R)

Contributor: Joakim Ögren
Source: ?
Please send any comments to Joakim Ögren.