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

DiscoverCircuits.com has links to 45,000+ electronic circuits, cross-referenced
into 500+ categories.    We have searched the web to help you find quick design ideas.

HOME Schematics Hobby Corner Dave's Circuits Electronic Resources Contact Info
Imagineering Ezine    Discover Solar Energy Dave Johnson & Associates Faraday Touch Switches
Welcome to DiscoverCircuits.com - online since 2002

See Media Kit for
Advertising Opportunities

Attention Designers:  Please alert us by eMail if we have linked to sites
where your original material has been copied without your permission.
We will change to the LINK to your site.  
Thank you.

 

Hobby Circuits designed by Dave Johnson

Last Updated on: Tuesday, October 24, 2017 03:04 PM


Text & Graphics Copyright David A. Johnson, PE  --  ALL Rights Reserved.
LINKING to Dave's circuits is permitted but COPYING CONTENT to your WEB SITE server IS NOT!



AC Power Control Circuits
 
Circuits Designed by David Johnson, P.E. :

AC Power Line High/Low Voltage Tester

AC Power Loss Alarm

Bi-Directional Charge Coupled Powers MOSFET Relay

Charge Coupled Bi-Directional Power MOSFET Relay

Detects Low Voltage 120VAC Power Line 

LED Strings powered by AC Line

Low Voltage 120vAC Power Line Alarm

Power Line Alarm

Solid State Relay Requires Only 50ua Drive Current

SSR Requires Ultra Low Control Current

Under/Over Voltage Alarm on AC Line
120 VAC Low Voltage Alarm

50ua Current Drives Solid State Relay Requires Only

AC Line Powered LED Flasher

AC Line Under/Over Voltage Alarm


 

Hobby Circuits by Category

eMail:
  David A. Johnson, P.E. about these circuits

 


 


Imagineering Ezine    Discover Solar Energy Dave Johnson & Associates Faraday Touch Switches



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


Discovercircuits.com endeavors to credit original designers.   Please alert us by eMail so we can
delete links to material that have been copied without your permission
.   Thank you.


Copyright of all original material on this website is the property
of David A. Johnson, P.E. (Dave Johnson & Associates ) unless otherwise noted.  

Linking is ALLOWED but COPYING any content or graphics to your web site is EXPRESSLY PROHIBITED.
All material is provided "as is" without guarantees or warranty of any kind, either expressed or implied.