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- Light-emitting_diode abstract "A light-emitting diode (LED) is a two-lead semiconductor light source that resembles a basic pn-junction diode, except that an LED also emits light. When an LED's anode lead has a voltage that is more positive than its cathode lead by at least the LED's forward voltage drop, current flows. Electrons are able to recombine with 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.An LED is often small in area (less than 1 mm2), and integrated optical components may be used to shape its radiation pattern.Appearing as practical electronic components in 1962, the earliest LEDs emitted low-intensity infrared light.Infrared LEDs are still frequently used as transmitting elements in remote-control circuits, such as those in remote controls for a wide variety of consumer electronics.The first visible-light LEDs were also of low intensity, and limited to red. Modern LEDs are available across the visible, ultraviolet, and infrared wavelengths, with very high brightness.Early LEDs were often used as indicator lamps for electronic devices, replacing small incandescent bulbs. They were soon packaged into numeric readouts in the form of seven-segment displays, and were commonly seen in digital clocks.Recent developments in LEDs permit them to be used in environmental and task lighting. LEDs have many advantages over incandescent light sources including lower energy consumption, longer lifetime, improved physical robustness, smaller size, and faster switching. Light-emitting diodes are now used in applications as diverse as aviation lighting, automotive headlamps, advertising, general lighting, traffic signals, and camera flashes.However, LEDs powerful enough for room lighting are still relatively expensive, and require more precise current and heat management than compact fluorescent lamp sources of comparable output.LEDs have allowed new text, video displays, and sensors to be developed, while their high switching rates are also useful in advanced communications technology.".
- Light-emitting_diode individualisedGnd "4125154-4".
- Light-emitting_diode thumbnail RBG-LED.jpg?width=300.
- Light-emitting_diode wikiPageExternalLink ?id=AHyMBJ_LMykC&printsec=frontcover.
- Light-emitting_diode wikiPageExternalLink 3293513.pdf.
- Light-emitting_diode wikiPageID "18290".
- Light-emitting_diode wikiPageRevisionID "605483831".
- Light-emitting_diode caption "Blue, pure green, and red LEDs in 5mm diffused cases".
- Light-emitting_diode firstProduced "1968".
- Light-emitting_diode gnd "4125154".
- Light-emitting_diode hasPhotoCollection Light-emitting_diode.
- Light-emitting_diode invented Oleg_Losev.
- Light-emitting_diode invented "James R. Biard".
- Light-emitting_diode invented "Nick Holonyak".
- Light-emitting_diode name "Light-emitting diode".
- Light-emitting_diode pins "anode and cathode".
- Light-emitting_diode symbol "110".
- Light-emitting_diode typ "s".
- Light-emitting_diode type Optoelectronics.
- Light-emitting_diode type Passivity_(engineering).
- Light-emitting_diode workingPrinciple Electroluminescence.
- Light-emitting_diode subject Category:Light-emitting_diodes.
- Light-emitting_diode subject Category:Lighting.
- Light-emitting_diode subject Category:Optical_diodes.
- Light-emitting_diode subject Category:Signage.
- Light-emitting_diode type Agent.
- Light-emitting_diode type Agent.
- Light-emitting_diode type Thing.
- Light-emitting_diode comment "A light-emitting diode (LED) is a two-lead semiconductor light source that resembles a basic pn-junction diode, except that an LED also emits light. When an LED's anode lead has a voltage that is more positive than its cathode lead by at least the LED's forward voltage drop, current flows. Electrons are able to recombine with holes within the device, releasing energy in the form of photons.".
- Light-emitting_diode label "Dioda elektroluminescencyjna".
- Light-emitting_diode label "Diode électroluminescente".
- Light-emitting_diode label "Diodo emissor de luz".
- Light-emitting_diode label "LED".
- Light-emitting_diode label "Led".
- Light-emitting_diode label "Led".
- Light-emitting_diode label "Leuchtdiode".
- Light-emitting_diode label "Light-emitting diode".
- Light-emitting_diode label "Светодиод".
- Light-emitting_diode label "صمام ثنائي باعث للضوء".
- Light-emitting_diode label "発光ダイオード".
- Light-emitting_diode label "發光二極管".
- Light-emitting_diode sameAs LED.
- Light-emitting_diode sameAs Leuchtdiode.
- Light-emitting_diode sameAs Δίοδος_Εκπομπής_Φωτός.
- Light-emitting_diode sameAs Led.
- Light-emitting_diode sameAs LED.
- Light-emitting_diode sameAs Diode_électroluminescente.
- Light-emitting_diode sameAs Diode_pancaran_cahaya.
- Light-emitting_diode sameAs LED.
- Light-emitting_diode sameAs 発光ダイオード.
- Light-emitting_diode sameAs 발광_다이오드.
- Light-emitting_diode sameAs Led.
- Light-emitting_diode sameAs Dioda_elektroluminescencyjna.
- Light-emitting_diode sameAs Diodo_emissor_de_luz.
- Light-emitting_diode sameAs m.04myn.
- Light-emitting_diode sameAs Q25504.
- Light-emitting_diode sameAs Q25504.
- Light-emitting_diode wasDerivedFrom Light-emitting_diode?oldid=605483831.
- Light-emitting_diode depiction RBG-LED.jpg.
- Light-emitting_diode isPrimaryTopicOf Light-emitting_diode.
