VARIABLE_Q_FILTER_FOR_400_Hz

Published:2009/6/16 2:39:00 Author:May | From:SeekIC

A bootstrapped twin T notch filter in this circuit can yield an effective Q of up to 10. RS adjusts the feedback, hence the Q. Values of C1 and C2 can be changed to alter the frequency. RF is a fine-tune null control.



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