The Hardware Book

(Romina) #1

PRELIMINARY BETA. NOT FOR REDISTRIBUTION.


The Hardware Book is freely distributable but is copyrighted to Joakim Ögren. It may not be modified and re-distributed without the authors permission.


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Chapter 5: Circuit Menu Active Filter: Butterworth 18dB Lowpass

Active Filter: Butterworth


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


R=4.7k-10 kOhm
Ca=2.000/(2*pi*Fc*R)
Cb=0.500/(2*pi*Fc*R)
Cc=1.000/(2*pi*Fc*R)
Units: R [Ohm], Cx [F], Fc [Hz]
Contributor: Joakim Ögren
Source:?
Please send any comments to Joakim Ögren.
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