"led"-tagged Public Circuits

traffic Light PUBLIC

by nkeck | updated February 11, 2015

555   led   light   logic   not   traffic  

Dark activated LED PUBLIC

This circuit uses 2 NPN Transistors and an LDR to create a automatic on for an LED in this case. It has very good response, and low power consumption in light.

by joiseystud | updated January 17, 2014

led   photoresistor  

GDB LED circuit PUBLIC

Eight Gravity Development Board LED's to make cool artistic displays or output engineering data.

by SolX2010 | updated January 12, 2014

gdb   gravity-development-board   led   sol-x   solar-system-express  

8-LED color oscillator PUBLIC

by hbs22 | updated December 16, 2013

555   led   logic-gate  

555Timer PUBLIC

by St0rmingBr4in | updated September 01, 2013

555   led   ne555   simple  

Simple near-UV led circuit PUBLIC

This diagram represents an LED array powered by two "C" batteries in series with a resistor to control current flow. All of the hardware needed to build this circuit can be purchased at Radioshack for...

by Elfrotardo | updated August 07, 2013

c-battery   led   led-array   near-uv   parallel-led   ultra-violet   uv  

led1 PUBLIC

Basic polarization circuit

by nliebeaux | updated July 19, 2013

led   ohms-law   qed123  

Reverse Joule Thief Light PUBLIC

A novel circuit to charge a Li-ion battery from a 2v Solar cell

by qs | updated July 14, 2013

joule-thief   led   lighting  

LA001DC-firestarter PUBLIC

An array of prefab 4.5v L.E.D. modules (with their resistors removed), chained together for use with 12VDC supply.

by asp | updated July 02, 2013

12vdc   array   danger   fire   hackemup   led  

28x 5050 6.5k LED AC MAIN PUBLIC

by glococo | updated June 14, 2013

led   led-array  

12-60V Constant Current LED Driver + PWM Dimmer PUBLIC

by serisman | updated June 07, 2013

555   constant-current   led   led-driver   led-string   pwm  

PWM LED Dimmer - 12V 8A (96W) PUBLIC

Reverse Engineered PWM LED Dimmer from eBay 12V 8A (96W) 96W12V-TM1-1 http://www.ebay.com/itm/251257623888

by serisman | updated June 06, 2013

555   dimmer   led   lm358   pwm  

Simple LED PUBLIC

by Owning_Phoenix | updated June 01, 2013

led  

Auto Off LED PUBLIC

by skillethelper1 | updated May 11, 2013

led  

Led Flasher PUBLIC

This is a circuit which uses an npn and pnp transistor to briefly flash an LED every few seconds

by shagas | updated May 06, 2013

flasher   led   led-flasher   npn   pnp   timed   transistor  

IR presence detector (e.g. for model railway trains) PUBLIC

Provides a presence detector for model railway trains and similar moving things, providing an input to Arduino microcontrollers.

by rickb | updated April 27, 2013

arduino   led   model-railway   phototransistor  

Directional IR presence detector PUBLIC

Provides a presence detector for model railway trains and similar moving things, providing an input to Arduino microcontrollers.

by rickb | updated April 23, 2013

arduino   led   model-railway   phototransistor  

LED multi string linear constant current sink 01 PUBLIC

DC Sweep doesn't simulate properly in CL for all values of R7. Time Domain simulation shows erroneous current spike at startup. See below.

by signality | updated April 15, 2013

constant-current-sink   constant-current-source   led   led-array   led-string  

LED multi string linear constant current sink 03 PUBLIC

This slightly simplified version of: LED multi string linear constant current sink 01 simulates fine in DC Sweep and Time Domain.

by signality | updated April 15, 2013

constant-current-sink   constant-current-source   led   led-array   led-string  

LED multi string linear constant current sink 02 PUBLIC

An attempt to get the time domain sim of: LED multi string linear constant current sink 01 to work properly. It doesn't. Time Domain simulation still shows erroneous current spikes at startup.

by signality | updated April 15, 2013

constant-current-sink   constant-current-source   current-sink   led   led-array   led-string