Light-emitting diode - Wikipedia
LEDs are transducers of electricity into light. They operate in reverse of photodiodes, which convert light into electricity. Electroluminescence from a solid state diode was discovered in …
LED | Definition, Light, & Facts | Britannica
Jul 9, 2025 · An LED (light-emitting diode) is a semiconductor device that emits infrared or visible light when charged with an electric current.
Amazon.com: Led Lights
Amazon.com: led lightsCheck each product page for other buying options. Price and other details may vary based on product size and color.
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 …
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, …
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 …
LED - Light Emitting Diode: Construction, Types & Applications
LED is a short form of Light Emitting Diode. It is a type of diode that emits light when a current pass through it. In other words, LED is a special type of diode that converts electrical energy …
LEDs: What Are They? (Definition, Types, and Uses)
Jan 1, 2025 · A LED or light-emitting diode is an electrical component that produces light when current passes through it. LEDs are semiconductor devices, light is produced when the …
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 an LED? - SparkFun Education
LEDs, or light-emitting diodes, are a particular type of diode that converts electrical energy into light. Essentially, they are tiny light bulbs that can be used in an electrical circuit.