Circuit - Automotive Electronic Circuits Designed by David A. Johnson, P.E.


	DiscoverCircuits.com, has 27,000+ electronic circuits. The electronic schematics are 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 design ideas to electronic design problems.

Web	www.discovercircuits.com

HOME

Schematics

Discover Forum

Hobby Corner

Dave's Circuits

Electronic Resources

Book Corner

Contact Info

Discover Solar Energy

Imagineering Ezine

Dave Johnson & Associates

Automotive Circuits
Designed by David A. Johnson, P.E.
Last Updated on: Thursday, January 01, 2009 06:56 AM

Master Category List - Dave's Circuits

125KHz Wireless Smart Key Detector
This circuit will turn on an indicator light whenever it detects a smart car key containing an RFID chip. (added 7/06)

Automotive 12v Electrical System Voltage Indicator
This battery powered unit is designed to quickly aid troubleshooting of 12v electrical systems in a car. Three LEDs proved a visual indication of a +12v, ground or an open circuit voltage level.

Automotive Electrical Voltage Indicator
This circuit will indicate if an automotive electrical circuit has zero volts or 12 volts present. (added 7/06)

Check Engine Beeper
When wired into a car’s indicator light panel, this circuit will turn on a loud beeper when the “check engine” light turns on. (added 7/06)

Fake Car Alarm Light
Whenever the car’s ignition is turned off, this circuit activates a flashing LED, which can be positioned to appear as an active alarm system. (added 7/06)

Voltage Indicator
When troubleshooting the 12v electrical system of an automobile, it is nice to have a simple voltage indicator tool instead of a voltmeter. This electronic circuit, hobby circuit is powered by two AA or even two N cells, which will provide enough energy for years of service. The circuit has only two leads...

More Automotive Circuits

Master Category List - Dave's Circuits