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

DiscoverCircuits.com, has 45,000+ 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 original material posted by the designer. 
Please let us if you would like us to link to or post your design.

HOME Schematics Index 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: Thursday, November 30, 2017 10:29 AM

List of Dave's Circuit Designs

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


Automotive Related Circuits


 
Circuits Designed by Dave Johnson, P.E. :

Auxiliary 12v Automotive Style LED Light Makes Table Lamp

Beeper indicates Check Engine

Car Ignition 12v Switch

Check Engine Beeper

Fake Car Alarm Light

Flashing Light to simulate Car Alarm

Indicates Automotive Electrical Voltage

Logic Controlled 12v DC Motor with Automatic Brake

RFID Smart Key Detector

Table Lamp with Auxiliary 12v Automotive Style LED Light

Wireless RFID Smart Key Detector

12v DC Motor with Logic Controlled Automatic Brake

Alarm Beeps when the “Check Engine” Light Turns On

Automotive Electrical Voltage Indicator


 

Dave's Circuits

Hobby Circuits

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

 


HOME Schematics Index Hobby Corner Dave's Circuits Electronic Resources Contact Info
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


Copyright  January, 1998 - November, 2017     David A. Johnson & Associates.  All Rights reserved. 


 Linking is ALLOWED but COPYING any content or graphics to your web site is EXPRESSLY PROHIBITED.