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Hobby Circuits designed by Dave Johnson

Last Updated on: Saturday, December 30, 2017 04:08 AM


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

 
Circuits Designed by David Johnson, P.E. :

LED Camping Lantern with Dimmer

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

LED Lighthouse Flasher for HO Model Train

LED_Flameless_Candle_Power_Boost

LED_Light_8_Solar_Cell

LED_Light_for_Tool_Shed

Light_Pathway_1w_Solar_Cob_LED

Lighthouse_Solar_Powered

Line Powered High Intensity LED Flasher

Line Status Indicator for 1 Telephone Line

Low Current Flashing LED Power Indicator

Low Pass Filter, 3Khz, with an Audio Amp

Low Power LED Flasher

Low Power Sequential Flasher using 10 LEDs

Mason_Jar_Solar_Light

Model Airplane Wing Tip Flasher

Model Train Lighthouse Flasher Revisited

Modified LED Night Light

Negative 0.5 Volt Supply

Night_Light_with_20_LED

One Nimh Cell powers White LED

One-Watt White LED Night Light

Plus & Minus DC Power Supply

PV Solar Cell Test Fixture

Radio Tower Lamp Monitor

Ramping Lamp Driver

Reduced Power Sequential LED Flasher

Revisited-Model Train Lighthouse Flasher

Shop Safety Light

Simple Circuit Negative Supply Circuit

Solar Modified Colman Lantern

Solid State Relay that is Bidirectional

Tester for Pulsed LEDs

Three Volt Universal LED Flasher

Three-Volt Low Battery Voltage Flasher

Three-Volt Powered Super Bright LED Flasher

Transmit to a Remote LED Indictor Light

TV_Fake_Camera_Flasher

Ultra Low Power LED Flasher

Voltage Monitor for a 9v Battery

White LED Array that is Lined Powered

White LED Driver powered by a 3v Battery

White LED Night Light

White_LED_Lifetime_Tests

120 VAC / 240 VAC Indicator

12v_To_24v_Solar_Battery_Charger

1-Nimh Cell powers White LED

1us LED Pulse Driver + Voltage to Frequency Converter

1W White LED Night Light

24 Volts AC to 24 Volts DC Power Supply

24V DC Powered Beeper with 4 Separate Inputs

3 Minute LED Closet Light

30 LED Night Light

3v Powered Super Bright LED Flasher

3v Universal LED Flasher

4 to 20ma Current Loop Senses Temperature

4_D-Cell_LED_Lantern_Modified

AC Line Powered LED Flasher

AC Line Powered LED Pilot Light

Auxiliary 12v Automotive Style LED Light Makes Table Lamp

Circuit Indicates Battery Charge Current

Circuit indicates Battery Charging Current

Classic Linear 5v Supply using 6.3VAC Transformer

CMOS IC Flashes LED

Colman_Lantern3_Modified

Computer, Long Period, Watch Dog Timer

Constant Current Drives LEDs

Constant Current LED Driver

Control Variable LED Intensity

Controlled Up/Down Ramping Light

Drive a LED with an Intensity Ramping Mode

Fireflies_In_Jar_Solar_Light

Flashing High-Power LED

Flashing LED Advertising Badge #1

Flashing Light to simulate Car Alarm

Generate 0.5v Negative Supply

High-Power_Flashing_LED

HO Model Train Lighthouse Flasher

HO Train Lighthouse Flasher Revisited

Hot AC Power Line Indicator

Illuminated_Banister

Increased power for LED Flasher

Indicates 120 VAC or 240 VAC

Indicates Battery Charge Current

Inductive Pulse Receiver (175Khz)

LED Array powered by 24 VAC


Hobby Circuits by Category

Dave's Circuits

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



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