Extended On Time Timer Circuit


Posted on Apr 24, 2012

Half of a Motorola MG14538B dual, precision, retriggerable mono stable multivibrator is used to form an extended on-time timer circuit. That type of circuit can be used as a switch debouncer. Such circuits are often used in digital circuitry, where each and every bounce of a switch contact is seen as a separate digital input.


Extended On Time Timer Circuit
Click here to download the full size of the above Circuit.

The delay on time (established by CI and Rl) is easily set using the formula, C1 Rv = T, where Cj is in microfarads, R} is in megohms, and is in seconds.




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