Active Filter: Butterworth
(3st order, 18 dB/octave, Highpass)

3rd order Butterworth Highpass

C=4.7n-10nF
Ra=0.500/(2*pi*Fc*C)
Rb=2.000/(2*pi*Fc*C)
Rc=1.000/(2*pi*Fc*C)

Units: Rx [Ohm], C [F], Fc [Hz]

Contributor: Joakim Ögren

Source: ?

Please send any comments to Joakim Ögren.