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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!

High Frequency Amplifier Circuits
Amplifier -- Main Page          Math Functions -- Main Page
Circuits Designed by David Johnson, P.E. :
10Mhz to 20Mhz Light Receiver

120VAC Under Voltage Tester

20Mhz VCSEL 3mw Laser Test Circuit

2Mhz Broad Band Optical Fiber Receiver

3mw Laser Test-20Mhz VCSEL

50/60Hz Sync Generator-Fully Isolated

50Mhz Broad Band Optical Fiber Receiver Version A

5Mhz Broad Band  Optical Fiber Receiver

Broad Band 2Mhz Optical Fiber Receiver

Broad Band 50Mhz Optical Fiber Receiver Version A

Brownout Voltage Tester

Characteristics of CMOS Logic Inverter Amplifiers

CMOS Logic Inverter Amplifier Characteristics

FET Input High Speed Light Detector

Form Push-Pull Driver using N-Ch & P-Ch Transistors 

High Speed Light Detector from FET Input

Laser Light Detyector-10Mhz to 20Mhz

Light Receiver-10MHz to 20MHz

N-Ch & P-Ch Transistor Form Push-Pull Driver

Optical Fiber Receiver-5Mhz Broad Band

Tester for Brown Out Voltage

Wide Band Zero Cross Detector


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



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

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