About 21,800,000 results
Open links in new tab
  1. Opportunity Louisiana | Louisiana Economic Development - LED

    Military-related spending is powering Louisiana’s economy—driving more than $17 billion in annual activity, supporting over 117,000 jobs, and propelling a surge of growth and investment across the …

  2. 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 …

  3. Learn About LED Lighting - ENERGY STAR

    LED stands for light emitting diode. LED lighting products produce light up to 90% more efficiently than incandescent light bulbs. How do they work? An electrical current passes through a microchip, which …

  4. 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 …

  5. 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.

  6. Light Emitting Diode (LED): What is it & How Does it Work?

    Feb 24, 2012 · What is a Light Emitting Diode (LED)? A Light Emitting Diode (LED) is a special type of PN junction diode. The light emitting diode is specially doped and made of a special type of …

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

    Sep 20, 2024 · As mentioned in the introduction, an LED is a semiconductor light source. It consists of a PN Junction Diode and when voltage is applied to the LED, electrons and holes recombine in the PN …

  8. What is LED Lighting: Definition, Working Principle and Components

    Jun 3, 2025 · Unlike traditional incandescent bulbs or fluorescent lamps, an LED is a semiconductor device that emits light when electrical current passes through it in the forward direction.

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

    The first question that might pop into your mind is, what is exactly an LED? A regular diode is a semiconductor device that works as a one-way switch for electrical current. It allows current in only …

  10. What is LED ( Light Emitting Diodes ) | LED Lighting Supply

    Dec 3, 2019 · How does an LED work? The P-N junction is the basis of the LED’s functioning. The LED has an anode and a cathode separated by a crystal of semiconductor material. By adding impurities …