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Hobby Circuits designed by Dave Johnson

Last Updated on: Tuesday, June 01, 2021 03:22 PM

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

Infrared Remote Extender Circuit

IR TV/VCR Remote Booster

Operation of Cascode Light Receivers

Optical Filter using Color Film Negative

Reflected Infrared Light Switch

Remote Range Extender TV/VCR

Replace a Pushbutton Switch with this Infrared Safety Switch

Scare Off Pigeons

Shadow Activated Motion Detector

TV-VCR Light Source 40Khz Repeater

Use Color Film Negative to Make an Optical Filter

1us LED Pulse Driver + Voltage to Frequency Converter

3mw Laser Test-20Mhz VCSEL

40Khz Burst Laser Diode Driver

Boost Infrared TV/VCR Remote Signal

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Dave's Circuits

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