Published:2009/6/29 4:35:00 Author:May | From:SeekIC
Circuit NotesConstant gain, constant Q, variable frequency filter which provides simultaneous low-pass, bandpass, and high-pass outputs.With the component values shown, center frequency will be 235 Hz and 23.5 Hz for high and low logic inputs respectively, Q=100, and gain=100.
fn=center frequency =1/2πRC
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