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Definition of "LED" |
Light-Emitting Diode: A semiconductor device that emits light (usually visible or infrared) when forward-biased. The application note, "Driving LEDs in Battery-Operated Applications: Controlling Brightness Power Efficiently" has a good explanation of how LEDs work, especially with regard to current vs. LED brightness and schemes for matching brightness when driving multiple LEDs. / [Light-Emitting Diode] A semiconductor device that emits incoherent optical radiation when biased in the forward direction. Terms used with LEDs. / Light Emitting Diode, Pulkovo Airport, law enforcement desk, light emitting diode / A light emitting diode is a two-lead semiconductor light source. It is a p–n junction diode, which emits light when activated. When a suitable voltage is applied to the leads, electrons are able to recombine with electron holes within the device, releasing energy in the form of photons. This effect is called electroluminescence, and the color of the light (corresponding to the energy of the photon) is determined by the energy band gap of the semiconductor. / Light emitting diode is a semiconductor light source. LEDs are used as indicator lamps in many devices and are increasingly used for general lighting. / A light-emitting diode (LED) is a two-lead semiconductor light source. It is a pn-junction diode, which emits light when activated. When a suitable voltage is applied to the leads, electrons are able to recombine with electron holes within the device, releasing energy in the form of photons. This effect is called electroluminescence, and the color of the light (corresponding to the energy of the photon) is determined by the energy band gap of the semiconductor. / A logic level is one of several states that a digital signal can possess, expressed as a DC voltage with respect to electrical ground. Usually, the term refers to binary logic in which two levels, or states, can exist: logic 1 and logic 0. / abbreviation for "light emitting diode." |
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