Butterworth 24dB Highpass

(4th order, 24 dB/octave, Highpass)

C=4.7n-10nF

<math>Ra=\frac {0.9239}{2\pi \times Fc \times C}</math>

<math>Rb=\frac {1.0824}{2\pi \times Fc \times C}</math>

<math>Rc=\frac {0.3827}{2\pi \times Fc \times C}</math>

<math>Rd=\frac {2.6130}{2\pi \times Fc \times C}</math>

Units: Rx [Ω], C [F], Fc [Hz]

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