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Hobby Circuits designed by Dave Johnson

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

Text & Graphics Copyright David A. Johnson, PE  --  ALL Rights Reserved.
LINKING to Dave's circuits is permitted but COPYING CONTENT to your WEB SITE server IS NOT!

FreeSpace (Light Beam) Communication Circuits
Circuits Designed by David Johnson, P.E. :

Fluorescent Lamp Intensity Modulator

High Ambient Light Immunity Light Detector

High Speed Light Detector from FET Input

Laser Light Detyector-10Mhz to 20Mhz

Light Detector with High Ambient Light Immunity

Light Detectors with Ambient Light Compensation

Light Receiver 30Khz Amp

Light Receiver-10MHz to 20MHz

Light to Frequency Converter

Light, LED/Laser, Output Intensity Meter

Line-Powered Xenon Flash Transmitter

Low Power 100khz Light Receiver

Low Power 40KHz Light Detector

Nitrogen Spark Generator

Pulsed LED Test Circuit

RFID Test Circuit

Simple Circuit Nitrogen Spark Generator

Tester for Pulsed LEDs

Transmitter for Line Powered Xenon Flash

Voltage to Frequency Converter + 1us LED Pulse Driver

Xenon Flash Receiver-AIR Transparency Monitor

Xenon Flash Transmitter-AIR Transparency Monitor

100Khz Low Power Light Receiver

10mhz to 20mhz Laser Light Detector

10Mhz to 20Mhz Light Receiver

1us LED Pulse Driver + Voltage to Frequency Converter

30Khz Light Receiver Amp

40Khz Light Detector with High Ambient Light Immunity

40KHz Light Detector with Sunlight Immunity

5w Fluorescent Lamp Intensity Modulator

AIR Transparency Monitor, Xenon Flash Receiver

AIR Transparency Monitor, Xenon Flash Transmitter

AIR Transparency Monitor-Pg2

Ambient Light Dectector with Compensation

FET Input High Speed Light Detector

Five-Watt Fluorescent Lamp Intensity Modulator


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



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