Butterworth 24dB Highpass

From HwB

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

Image:cir_ActiveFilter4H.png

C=4.7n-10nF

Ra=\frac {0.9239}{2\pi \times Fc \times C}

Rb=\frac {1.0824}{2\pi \times Fc \times C}

Rc=\frac {0.3827}{2\pi \times Fc \times C}

Rd=\frac {2.6130}{2\pi \times Fc \times C}

Units: Rx [Ω], C [F], Fc [Hz]

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