MISSING_PULSE_DETECTOR

Published:2009/7/15 3:32:00 Author:Jessie | From:SeekIC

Timing cycle of 555 timer is continuously reset by input pulse train. Change in input frequency or missing pulse allows completion of timing cycle, producing change in output level. Component values should be chosen so time delay is slightly longer than normal time between pulses.- Signetics Analog Data Manual, Signetics, Sunnyvale, GA, 1977, p 723.



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