10_kHz_VOLTAGE_TUNED_

Published:2009/7/2 5:14:00 Author:May | From:SeekIC

High-Q circuit using Optical Electronies 9831 opamp has sharp resonance, as required for analysis of spectrum of incoming signal. Reverse-biased silicon junctions senre as voltage variable capacitors for sweeping center frequency over 3: 1 range. Values shown for three resistors in twin-T network give cenW frequency of 10 kHz.- Voltage Tuned High-Q Filter, Optical Electronics, Tucson, AZ, Application Tip 10207.



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