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Circuits designed by David Johnson, P.E.
Last Updated on: Tuesday, April 01, 2014 04:30 AM

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More  Alarm Circuits   Piezoelectric Circuits

Motion Alarm  
 
Using a piezoelectric device, this circuit will activate a beeper whenever the circuit is moved.  It could be used as an earthquake alarm.

Click on Drawing Below to view PDF version of Schematic

Circuit Motion Alarm designed by David A. Johnson, P.E. (July 31, 2005)

More  Alarm Circuits   Piezoelectric Circuits

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