Light-emitting diode - Wikipedia
In electrical engineering, a light-emitting diode (LED) is a semiconductor device that emits light when current flows through it. Electrons in the semiconductor recombine with electron holes, …
LED | Definition, Light, & Facts | Britannica
Nov 25, 2025 · An LED (light-emitting diode) is a semiconductor device that emits infrared or visible light when charged with an electric current.
Light Emitting Diode (LED): What is it & How Does it Work?
Feb 24, 2012 · This page is about Solid State Light or Light Emitting Diode or LED including the introduction of the working principle of LED. The features of LED are also mentioned in this …
Learn About LED Lighting - ENERGY STAR
When designed well, LED lighting is more efficient, versatile, and lasts longer. LEDs are “directional” light sources, which means they emit light in a specific direction, unlike …
Light Emitting Diode (LED): Principle, Advantages, and Uses
Jun 10, 2025 · A light-emitting diode (LED) is a small electronic device that emits light when an electric current flows through it. LED works by passing electricity through a semiconductor, …
La diode LED : cours et principe de fonctionnement
Une LED est une diode qui émet de la lumière quand elle polarisée en direct. Elle est maintenant très utilisée pour l'éclairage en remplacement des lampes à incandescence et depuis 1975 …
LED - Light Emitting Diode: Basics, Types and Characteristics
Sep 20, 2024 · In this article, we have seen about basics of LED and few important characteristics of LED. In the next tutorial, we will see How an LED works and the construction of an LED.
How Light Emitting Diodes Work | HowStuffWorks
Several companies have begun selling LED light bulbs designed to compete with incandescent and compact fluorescents that promise to deliver long lives of bright light and amazing energy …
Qu'est-ce qu'une LED: Types et applications - Greenice
Donc, pour comprendre ce qu'est une LED, nous devons incorporer le terme électroluminescence, qui peut sembler imposant mais qui contient une simplicité incroyable: …
Les notions de base de l'éclairage LED - LITED
Mar 24, 2025 · Dans cet article, nous allons explorer les concepts fondamentaux de l’éclairage LED, afin de vous aider à mieux comprendre ses avantages et son fonctionnement.