PULSE_WIDTH_CONTROL

Published:2009/7/2 0:24:00 Author:May | From:SeekIC

DC input voltage controls width of rectangular output pulse of opamp operating as free-running multivibrator, by injecting additional current into phase-inverting input of opamp. This current serves to increase one timing period and decrease the other. Circuit also provides similarly controllable sawtooth output (at pin 2). Output circuit uses diode bridge and zener for symmetrically clamping output voltage limits of amplifier when this feature is required.-G. B. Clayton, Experiments with Operational Amplifiers, Wire-less World, May 1973, p 241-242.



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