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Circuits designed by David Johnson, P.E.
Last Updated on: Saturday, December 30, 2017 06:28 AM

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Light Emitting Diode (LED) Circuits
Master Category List   --  Dave's Circuits

Circuits Designed by Dave Johnson, P.E. :

Lighthouse LED Flasher

Line Powered White LED Array

Low Power Universal LED Flasher

Miniature Lighthouse Light Simulator

Modified 4 D Cell LED Lantern

Modified Colman Lantern3

Night Light from White LED

Nine-Volt Battery Voltage Monitor

On/off Pushbutton Switch with 30 Minute Timeout

One-Line Telephone Line Status Indicator

Pot Controlled Variable LED Intensity Circuit

Power Supply-24 Volts AC to 24 Volts DC

Pulsed LED Test Circuit

Pushbutton Controlled Up/Down Ramping Light

Ramping LED Driver

Remote LED Indicator Light

Simple Circuit for White LED Night Light

Solar Fireflies In Jar Light

Solar Mason Jar Light

Solar Powered Flood Light using NiMH Cells

Solar Powered Infrared 1W Security Camera Illuminator

Solar Powered Lighthouse

Sound Triggered Night Light

Super Bright 3v Powered LED Flasher

Table Lamp with Auxiliary 12v Automotive Style LED Light

Ten-LED Sequential Flasher using Low Powr

Three-Minute Closet Light

Ultra Low Current 3v LED Flasher #6

Universal LED Flasher


Up/Down Ramping Light Pushbutton Control

Version a of 1.5v LED Flasher

Voltage to Frequency Converter + 1us LED Pulse Driver

Well Pump Flasher & Beeper

White LED is Powered By One Nimh Cell

White LED Lifetime Tests

White LEDs powered by 24V

Wig/Wag LED Flasher

Wireless LED Flasher

0.5v Negative Supply

1 Line Telephone Line Status Indicator

1.5v LED Flasher Version A

10 LED Sequential Flasher using Low Powr

20 LED Night Light

3-Minute Closet Light

3-Minute Closet Light #2

3v Battery Powered White LED Driver

8 Solar Cell LED Light

9v Battery Voltage Monitor

AC Power Loss Alarm

Active AC Power Line Indicator

Advertising Badge #1 with Flashing LED

Advertising Badge #2 with Flashing LED

AIR Transparency Monitor, Xenon Flash Transmitter

Battery Charge Current Indicator

Battery Free LED Flasher

Bidirectional Solid State Relay

Closet Light with Automatic 3-Minute Timeout

Computer Controlled PWM Circuit

Convert Solar Powered Light to Flasher

Current Indicator for Battery Chargers

Does Power Line have 120 VAC or 240 VAC?

Either Indicates 120 VAC or 240 VAC

Fake TV Camera Flasher

Flameless LED Candle Power Boost

Flashing LED Power Indicator

High Intensity Line Powered LED Flasher

High Power Flashing LED

High Power LED Flasher

Illuminated Banister

Improved Solar LED Spot Light

IR Remote LED Indicator Light

LED Driver using Constant Current

LED Flashing Badge #1

LED Flashing Badge #2

LED Pilot Light powered by AC Line

Dave's Circuits

Hobby Circuits

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

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

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Copyright  January, 1998 - December, 2017     David A. Johnson & Associates.  All Rights reserved. 

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