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Circuits designed by David Johnson, P.E.
Last Updated on: Friday, December 29, 2017 02:53 AM

List of Dave's Circuit Designs

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Automotive Related Circuits

 
Circuits Designed by Dave Johnson, P.E. :

125khz Wireless Smart Key Detector

Alarm Beeps when the “Check Engine” Light Turns On

Automotive Electrical Voltage Indicator

Beeper indicates Check Engine

Check Engine Beeper

Fake Car Alarm Light

Logic Controlled 12v DC Motor with Automatic Brake

Table Lamp with Auxiliary 12v Automotive Style LED Light

 

Dave's Circuits

Hobby Circuits

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

 

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

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

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