About 29,800,000 results
Open links in new tab
  1. 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, thereby …

  2. 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.

  3. 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 incandescent and CFL, which …

  4. LED - Light Emitting Diode: Basics, Types and Characteristics

    Sep 20, 2024 · LED or Light Emitting Diode is a very common source of light. An article about Basics of LED, Characteristics of LED and different Types of LED.

  5. 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 article.

  6. 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, which releases …

  7. LED Lighting - Department of Energy

    The light-emitting diode (LED) is today's most energy-efficient and rapidly developing lighting technology. Quality LED light bulbs last longer, are more durable, and offer comparable or better light …

  8. What is an LED? | All About LEDs | Adafruit Learning System

    Feb 11, 2013 · In fact, the first two letters of LED stand for Light Emitting. A really nice thing about LEDs is that they are very simple. Unlike some chips that have dozens of pins with names and special …

  9. Wat betekent led en hoe werkt led verlichting? - led advies

    Wat betekent led en hoe werkt led verlichting? Led is een afkorting voor Light Emitting Diode, in het Nederlands lichtemitterende diode. Dit is een zuinige lamp, die gebruik maakt van elektriciteit om …

  10. LED (Light-emitting diode) explained - Soldered Electronics

    Thus, an LED is polarized and will only emit light if it’s connected correctly. For it to work properly, the current must go from anode to cathode. The anode must be connected to the positive end and the …