RESISTANCE_CONTROLLED_DIGITAL_OSCILLATOR

Published:2009/7/5 22:55:00 Author:May | From:SeekIC

This very simple, low cost oscillator, is built with two CMOS buffer inverters, two capacitors and a variable resistance. The circuit can work with voltages ranging from 4 V up to 18 V. If C1 = C2, the frequency of oscillation, (ignoring the output and input impedance) is given by: The graph in Fig. B shows how the output frequency varies with resistance when C1=C2=100 pF and C1=C2=2000 pF.



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