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Light-emitting diode - Wikipedia


A light-emitting diode (LED) is a two-lead semiconductor light source. It is a p–n junction diode, which emits light when activated. When a suitable voltage is ...

How Light Emitting Diodes Work | HowStuffWorks


Light emitting diodes form the numbers on digital clocks, send data from remote controls and light up traffic signals. Find out how LEDs work.

Light Emitting Diodes - HyperPhysics


Light can be produced and/or controlled electronically in a number of ways. In light emitting diodes (LEDs), light is produced by a solid state process called ...

What is light-emitting diode (LED)? - Definition from WhatIs.com


A light-emitting diode (LED) is a semiconductor device that emits visible light when an electric current passes through it.

LED Lights - How it Works - History - Edison Tech Center


Introduction: The LED is a light source which uses semiconductors and electroluminescence to create light. There are two major kinds of light emitting diodes: ...

Learn About LED Bulbs | ENERGY STAR


Why should I choose ENERGY STAR certified LED lighting products? What are LEDs? LEDs, or lightemitting diodes, are semiconductor devices that produce ...

Light-Emitting Diodes (LEDs) - learn.sparkfun.com


The positive side of the LED is called the “anode” and is marked by having a longer “lead,” or leg. The other, negative side of the LED is called the “cathode.

Light-Emitting Diodes: E. Fred Schubert: 9780521865388: Amazon ...


'Light-Emitting Diodes is an excellent examination of the physics and technology of semiconductor LEDs. The narration is simple and direct, and the book is well ...

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Nov 18, 2012 ... Light Emitting Diode (LED) ... How Diodes Work? (English ... LED Tutorial: Light a 10W LED from 12V - Simple & Cheap - Duration: 12:14.