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: Sunday, July 27, 2008 07:41 PM


Alarm Circuits
WATER SEEPAGE ALARM
This simple circuit sounds a beeper when its electrodes detect water. It is powered by a single 1.5v N cell. A small 1.5v button battery will also work.

Click on Drawing Below to view PDF version of Schematic

Circuit Water Seepage Alarm designed by David A. Johnson, P.E. (June 11, 2000)

Alarm 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.