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- 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 releasing energy in the form of photons
- 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 illuminates the tiny light sources we call LEDs and the result is visible light
- LED | Definition, Light, Facts | Britannica
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): Principle, Advantages, and Uses
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 energy in the form of light
- LED Basics - Department of Energy
LED lighting technology now offers the highest luminous efficacies (and efficiencies) of any light-source technology, and low prices have resulted in significant adoption
- What is an LED? | All About LEDs | Adafruit Learning System
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 uses, LEDs have only two wires One wire is the anode (positive) and another is the cathode (negative)
- Introduction to LEDs - Lighting Design Lab
LED illumination is achieved when a semiconductor crystal is excited so that it directly produces visible light in a desired wavelength range (color) LED units are small, typically 5mm (T 1-3 4)
- What is LED ( Light Emitting Diodes ) | LED Lighting Supply
LED dates back to the early 1900s when a British physicist discovered silicon carbide crystals could produce light when electric currents were touched In 1962, GE scientist Nick Holonyak developed the first visible light LED diode
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