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Last Updated on: Tuesday, June 01, 2021 03:06 PM

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More  Delay Circuits

LONG PERIOD COMPUTER WATCH DOG TIMER


This circuit uses a simple 4060 IC oscillator/timer that is reset periodically by a computer. Should the computer fail to send a pulse, the output changes state. The time can easily be set from seconds to hours.
 

Click on Circuit Below to view PDF of Schematic

5 Minute Watchdog Timer designed by Dave Johnson, P.E. (Dec 26, 1998)

More  Delay Circuits

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