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Hobby Circuits designed by Dave Johnson

Last Updated on: Friday, December 29, 2017 04:29 PM

List of Hobby 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!




Transmitter Circuits
Circuits Designed by David Johnson, P.E. :

175Khz Inductive Pulse Transmitter

3Khz Filter + Audio Amplifier

Inductive Pulse Receiver (175Khz)

Infrared Remote Extender Circuit

Locate a Plastic Pipe

Transmitter for Line Powered Xenon Flash

TV-VCR Light Source 40Khz Repeater

Xenon Flash Transmitter-AIR Transparency Monitor


 

Hobby Circuits by Category

Dave's Circuits

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

 


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


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