Electronic Circuits and electronic circuits, electronic schematics plus an extensive resource for hobbyists, inventors and engineers

DiscoverCircuits.com, has 26,000+ electronic circuits
or schematics carefully cross-referenced into 500+ categories.   As a vital resource for engineers, hobbyists, inventors & consultants, the site's collection of information will help you find quick solutions to electronic design problems.

   

Web www.discovercircuits.com
HOME Schematics Discover Forum Hobby Corner Dave's Circuits Electronic Resources Book Corner Contact Info

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

Master Category List - Dave's Circuits
 Last Updated on: Friday, July 18, 2008 11:34 AM


Alarm Circuits   Piezeoelectric 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

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.
 

Copyright  2002 - 2008 David A. Johnson & Associates.  All Rights Reserved to the contents & graphics of Discovercircuits.com
Linking is welcomed but COPYING any content or graphics to your server is expressly prohibited.