1_kHz_STATE_VARIABLE_BANDPASS

Published:2009/7/2 23:39:00 Author:May | From:SeekIC

With three 741 opamps or equivalent, circuit gain is Q (reciprocal of damping). Frequency is changed by changing 10K coupling resistors between opamps while keeping their values equal. Increasing resistors 10 times increases frequency 10 times. High-pass output is obtained from first opamp and low pass from second opamp.-D.Lancaster, Active-Filter Cookbook, Howard W. Sams,Indianapolis, IN, 1975, p 156-159.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Basic_Circuit/1_kHz_STATE_VARIABLE_BANDPASS.html

Print this Page | Comments | Reading(3)