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LED lamp - Wikipedia
Learn about the development, features and uses of LED lamps, which are electric lights that produce light using light-emitting diodes. Compare LED lamps with incandescent, fluorescent and metal-halide lamps in terms of efficiency, …
History of the LED - Wikipedia
It was the first intelligent LED display, and was a revolution in digital display technology, replacing the Nixie tube and becoming the basis for later LED displays. [27] In the 1970s, commercially …
Light-emitting diode - Simple English Wikipedia, the …
Learn about LEDs, semiconductor devices that produce light from electricity. Find out how they work, what colors they can make, and how they are used in …
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What is LED? - Definition, Working, Properties, Uses, …
A light-emitting diode (LED) is a semiconductor device that emits light when an electric current flows through it. Based on the semiconductor material used …
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LED – Wikipedia
LED (engl. light-emitting diode) eli loistediodi [1], valodiodi [2] [a], hohtodiodi tai ledi on puolijohdekomponentti, joka säteilee valoa, kun sen läpi johdetaan sähkövirta. LEDit, kuten …
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What Is an LED? - How-To Geek
Aug 11, 2022 · LED stands for "Light-Emitting Diode." The word "diode" is a key component here, because a diode is a semiconductor that only allows electricity to flow in one direction. To make an LED, manufacturers take two materials …
LED | Definition, Light, & Facts | Britannica
Jan 22, 2025 · LED, in electronics, a semiconductor device that emits infrared or visible light when charged with an electric current. LED displays began to be used for consumer electronic devices starting in 1968, when Hewlett-Packard (HP) …
How Light Emitting Diodes Work | HowStuffWorks
Technically, they're LED-backlit LCD TVs. Instead of fluorescent tubes, LEDs shine light from behind the screen, illuminating the pixels to create an image. Due to the small size and low power consumption of LEDs, LED-backlit TVs are far …
Light-emitting diode physics - Wikipedia
Learn how LEDs produce light by electroluminescence and how the wavelength depends on the semiconductor materials. Find out how the refractive index, optical coatings and die shape …
LED - Light Emitting Diode: Basics, Types and …
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.
Light Emitting Diode (LED): Principle, Advantages, and Uses
Dec 3, 2024 · 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 , …
How LED Light Bulbs Work - HowStuffWorks
An LED is what's called a "solid-state lighting" technology, or SSL. Basically, instead of emitting light from a vacuum (as in an incandescent bulb) or a gas (as in a CFL), an SSL emits light …
Who Invented LED or the Light Emitting Diode? - ThoughtCo
Feb 14, 2021 · In 1962, Nick Holonyack, a consulting engineer for General Electric, invented the first visible light LED. It was a red LED and Holonyack had used gallium arsenide phosphide …
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 …
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 …
LED circuit - Wikipedia
Learn about the basic circuit, power source, and current limiting methods for LEDs. Find out how to calculate the resistor value, the forward voltage, and the efficiency of LED drivers.
Light Emitting Diode or the LED Tutorial - Basic Electronics …
The “Light Emitting Diode” or LED as it is more commonly called, is basically just a specialised type of diode as they have very similar electrical characteristics to a PN junction diode. This …
Do You Know What LED Stands For? - Lifewire
Sep 11, 2020 · LEDs are everywhere, but are you sure you know what LED stands for? Find out the meaning of LED, a bit of its history, and where LEDs are used.
Electric light - Wikipedia
An electric light, lamp, or light bulb is an electrical component that produces light.It is the most common form of artificial lighting.Lamps usually have a base made of ceramic, metal, glass, or …
Light Emitting Diodes - Engineering LibreTexts
At room temperature, the voltage across an LED was measured to be 1.67 V. What is the band gap of this semiconductor, and what wavelength of light is emitted? Why are most LEDs made …
