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

IR TV/VCR Remote Booster

Light/Dark Activated Motion Detector

Micro Power 40Khz Burst Laser Diode Driver

Operation of Cascode Light Receivers

Optical Filter using Color Film Negative

Optical RFID Test Circuit

Piezoelectric Tap Switch

Reflected Infrared Light Switch

Remote Extender Circuit

Remote Range Extender TV/VCR

Replace a Pushbutton Switch with this Infrared Safety Switch

Scare Off Pigeons

Shadow Activated Motion Detector

Short Range Reflective Object Sensor

Solar Powered Infrared 1W Security Camera Illuminator

TV /VCR Remote Range Extender Circuit

TV-VCR Light Source 40Khz Repeater

Use Color Film Negative to Make an Optical Filter

Voltage to Frequency Converter + 1us LED Pulse Driver

125khz Wireless Smart Key Detector

1us LED Pulse Driver + Voltage to Frequency Converter

20Mhz VCSEL 3mw Laser Test Circuit

3mw Laser Test-20Mhz VCSEL

40Khz Burst Laser Diode Driver

40khz TV-VCR Light Source Repeater

Boost Infrared TV/VCR Remote Signal

Color Film Makes Optical Filter

Detects Shadow Activated Motion

Finger Touch Activated Switch

Infrared Reflected Light Switch

Infrared Remote Extender Circuit

Infrared Safety Switch

Infrared TV/VCR Remote Booster

Hobby Circuits by Category

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


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

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