Butterworth 18dB Highpass

From HwB

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

Cir ActiveFilter3H.png

C=4.7n-10nF

<math>Ra=\frac {0.500}{2\pi \times Fc \times C}</math>

<math>Rb=\frac {2.000}{2\pi \times Fc \times C}</math>

<math>Rc=\frac {1.000}{2\pi \times Fc \times C}</math>

Units: Rx [Ω], C [F], Fc [Hz]

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