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DiscoverCircuits.com  --   Dave's Circuits
Circuits designed by David Johnson, P.E.

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Last Updated on:  06/17/2009 03:30:21 PM

Alarm Circuits   Piezeoelectric Circuits

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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.

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

Alarm Circuits     Piezeoelectric Circuits
Master Schematic Category List - David A. Johnson, P.E.
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