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Hobby Circuits designed by Dave Johnson

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

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!



Audio Amplifier Circuits 
Amplifier -- Main Page          Math Functions -- Main Page
 
Circuits Designed by David Johnson, P.E. :
3Khz Filter + Audio Amplifier

3Khz Low Pass Filter Plus Audio Amp

Audio Amp + 3Khz Filter

Band Drummerís Microphone Switch

Boost Infrared TV/VCR Remote Signal

DVD Recorder + TV Camera Make Cheap Data Logger

Improve the quality of standard TV images

Infrared TV/VCR Remote Booster

Low Pass Filter, 3Khz, with an Audio Amp

Microphone On/Off Switch Circuit is Pop Free

IR TV/VCR Remote Booster

Pop Free Microphone On/Off Switch Circuit

Remote Range Extender TV/VCR

Remote TV Camera Power

TV /VCR Remote Range Extender Circuit

Video Signal Edge Enhancements

300v Peak to Peak Signal Generator

 


 

Hobby Circuits by Category

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



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