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Hobby Circuits designed by Dave Johnson

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

Text & Graphics Copyright David A. Johnson, PE  --  ALL Rights Reserved.
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Lamp / Lighting Control Circuits
Circuits designed by David Johnson, P.E. :

Increased power for LED Flasher

Inrush Current Limiter for a Incandescent Lamp 

LED Driver-Wireless

LED Flasher needs only 1.5 VOLTS

LED Flasher that is Battery Free

LED Flasher Universal 3v

LED Flasher-Wig/Wag

LED Flasher-Wireless Circuit

LED Lighthouse Flasher for HO Model Train

Light to Frequency Converter

Lighthouse LED  Flasher

Line Powered High Intensity LED Flasher

Low Current Flashing LED Power Indicator

Low Power LED Flasher

Low Power Sequential Flasher using 10 LEDs

Model Airplane Wing Tip Flasher

Model Train Lighthouse Flasher Revisited

Modified LED Night Light

Momentary Touch Activated Switch

One-Watt White LED Night Light

Optical Filter using Color Film Negative

Ramping Lamp Driver

Reduced Power Sequential LED Flasher

Revisited-Model Train Lighthouse Flasher

Shop Safety Light


Three Volt Universal LED Flasher

Three-Volt Low Battery Voltage Flasher

Three-Volt Powered Super Bright LED Flasher

Transmitter for Line Powered Xenon Flash

Universal Flasher using a Latching Relay

White LED Array that is Lined Powered

12 Volt Lite/Dark Lamp Switch

14v LED AuxiliaryLamp with a 60 Watt Lamp

1W White LED Night Light

3 Minute LED Closet Light

3v Powered Super Bright LED Flasher

3v Universal LED Flasher

Battery-Powered LED Flashing Advertising #2

Capacitance Touch Switch

Classic Linear 5v Supply using 6.3VAC Transformer


Controlled Up/Down Ramping Light

Controller for a 9v Powered Xenon Photoflash

Dark Activated 12v Power Supply Switch

Detect Short Xenon Lamp Flashes

Detects Xenon Lamp Flash

Drive a LED with an Intensity Ramping Mode

Flashing High-Power LED

Flashing LED Advertising Badge #1

Fluorescent Lamp Intensity Modulator

Fluorescent Lamp Night Light Needs Only 1 Watt


HO Model Train Lighthouse Flasher

HO Train Lighthouse Flasher Revisited

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