TUNABLE_ACTIVE_FILTER

Published:2009/6/29 23:01:00 Author:May | From:SeekIC

Circuit NotesThe high-pass and low-pass outputs cov-ering the range of 300 Hz to 3000 Hz have been summed in the fourth op amp to provide a notchoutput. The potentiometers must have a re-verse log taper. Fixed-frequency active filter center frequency is1 kHz, with a Q of 50.



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