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

DiscoverCircuits.com, has 30,000+ electronic circuits, cross-referenced
into 500+ categories.    We have searched the web to help you find quick design ideas.
We make every effort to link to material posted by the designer. 
Please let us if you would like us to link to or post your design.
HOME Schematics Discover Forum Hobby Corner Dave's Circuits Electronic Resources Contact Info
Imagineering Ezine    Discover Solar Energy Dave Johnson & Associates Faraday Touch Switches

 

Circuits designed by David Johnson, P.E.
Last Updated on: Friday, March 23, 2012 06:00 AM

Master Category List - Dave's Circuits

The contents & graphics of Discovercircuits.com are copyright protected.
LINKING to Dave's circuits is permitted but DO NOT COPY any files to your WEB SITE server

 

More  Light Dependant Resistors Circuits

Dark Activated 12v Power Supply Switch
Using an inexpensive phototransistor, this circuit switches 12v to 24v power to a load, whenever the sun goes down.

Click on Drawing Below to view PDF version of Schematic

Circuit 6V to 24V DC Day / Night Switch Circuit designed by David A. Johnson, P.E. (June 30, 2006)

More  Light Dependant Resistors Circuits

Find Dave's Circuits by Category
eMail David A. Johnson, P.E. about this circuit
 
HOME Schematics Discover Forum Hobby Corner Dave's Circuits Electronic Resources Contact Info

 

 About Us   |  Advertise on DiscoverCircuits.com   |   Report Broken Links  |    Link to DiscoverCircuits.com  |    Privacy Policy

Copyright  2002 - 2012 David A. Johnson & Associates.  All Rights reserved. 
 Linking is welcomed but COPYING any content or graphics to your web site is expressly prohibited.