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Circuits designed by David Johnson, P.E.
Last Updated on: Friday, December 29, 2017 02:53 AM


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

High Intensity Line Powered LED Flasher

High Power Flashing LED

High Power LED Flasher

Incandescent Lamp Inrush Current Limiter

LED Flashing Badge #1

LED Flashing Badge #2

Light/Dark 12V Switch

Lighthouse LED Flasher

Line Powered White LED Array

Line-Powered Xenon Flash Transmitter

Low Battery Voltage Flasher

Low Power Universal LED Flasher

Night Light from White LED

Pushbutton Controlled Up/Down Ramping Light

Ramping LED Driver

Restaurant Table Service Request Flasher

Shooting Range Flasher

Simple Circuit for White LED Night Light

Sound Triggered Night Light

Super Bright 3v Powered LED Flasher

Table_Service_Request_Flasher

Ten-LED Sequential Flasher using Low Powr

Three-Minute Closet Light

Touch Activated Switch

Ultra Low Current 3v LED Flasher #5

Universal LED Flasher

Universal-3v-LED-Flasher

Up/Down Ramping Light Pushbutton Control

Version a of 1.5v LED Flasher

Wig/Wag LED Flasher

Wireless LED Flasher

Xenon Lamp Flash Detector Amplifier

Xenon Photoflash Controller

1 Watt Fluorescent Lamp Night Light 

1.5v LED Flasher Version A

1.5V Touch Activated Switch

10 LED Sequential Flasher using Low Powr

12v Light/Dark Lamp Switch

12v Touch Switch Exciter Circuit

3 Volt Low Battery Voltage Flasher

3-Minute Closet Light

3-Minute Closet Light #2

5w Fluorescent Lamp Intensity Modulator

60 Watt Lamp with Auxiliary 14v LED Lamp

6V to 24V DC Day/Night Switch

9v Powered Xenon Photoflash Controller

Advertising Badge #1 with Flashing LED

Advertising Badge #2 with Flashing LED

Amplifier for a Xenon Lamp Flash Detector

Battery Free LED Flasher

Closet Light with Automatic 3-Minute Timeout

Computer Controlled PWM Circuit

Convert Solar Powered Light to Flasher

Five-Watt Fluorescent Lamp Intensity Modulator

Flashing LED Power Indicator

Freeze Alarm


Dave's Circuits

Hobby Circuits

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