LED - translation to English
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LED - translation to English

SEMICONDUCTOR AND SOLID STATE LIGHT SOURCE
Light emitting diode; Light Emitting Diode; Light Emitting Diodes; LEDs; LED (Light-emitting diode); Light-emitting diodes; Light-Emitting Diode; Light emitting diodes; Superbright LED; Light-Emitting Diodes; Blue LED; HB LED; L.E.D.; RGB LED; LED diodes; LED diode; XM LED; Light emitter; SMD LEDs; LEDs SMD; Miniature light-emitting diode; Droop (LED); Light-emiting diode; L.E.D. Light; L.E.D. lights; Full-color led; LED; LED cover; Led cover; White light-emitting diode; White LED; Tunable White-Light-Emitting Nanocrystals; Bidirectional LED; Semiconductor radiant diode; Applications of light-emitting diodes; RGB lighting
  • Lumileds]])
  • X-Ray of a 1970s 8-digit LED calculator display
  • [[Blue]] LEDs
  • mains voltage]]
  • Illustration of [[Haitz's law]], showing improvement in light output per LED over time, with a logarithmic scale on the vertical axis
  • 210px
  • Parts of a conventional LED. The flat bottom surfaces of the anvil and post embedded inside the epoxy act as anchors, to prevent the conductors from being forcefully pulled out via mechanical strain or vibration.
  • LED costume for stage performers
  • [[Daytime running light]] LEDs of an automobile
  • Close-up of an led with the voltage being increased and decreased to show a detailed view of its operation.
  • Simple LED circuit with resistor for current limiting
  • LED for miners, to increase visibility inside mines
  •  Los Angeles [[Vincent Thomas Bridge]] illuminated with blue LEDs
  • 21 × 86 mm}} display. Center: Close-up of LEDs in ambient light. Bottom: LEDs in their own red light.
  • RGB-SMD-LED
  • RGB LED
  • Red and green LED traffic signals
  • A 1962 Texas Instruments SNX-100 GaAs LED contained in a TO-18 transistor metal case
  • Round]]'s original experiment from 1907.
  • surface mount LED]]s in most common sizes. They can be much smaller than a traditional 5{{nbsp}}mm lamp type LED, shown on the upper left corner.
  • surface mount LED]]
  • 1978}}), which uses plastic lenses to increase the visible digit size
  • LEDs are produced in a variety of shapes and sizes. The color of the plastic lens is often the same as the actual color of light emitted, but not always. For instance, purple plastic is often used for infrared LEDs, and most blue devices have colorless housings. Modern high-power LEDs such as those used for lighting and backlighting are generally found in [[surface-mount technology]] (SMT) packages (not shown).
  • Very small (1.6×1.6×0.35{{nbsp}}mm) red, green, and blue surface mount miniature LED package with gold [[wire bonding]] details.
  • Stokes-shifted]] light emitted by the Ce<sup>3+</sup>:YAG phosphor, which emits at roughly 500–700 nm

LED         
light emitting diode, electronic circuit that gives off light at a uniform frequency then an electrical current passes through it
mettre sur la liste noir      
black list
guidé         
led, guided

Definition

Led
·Impf & ·p.p. of Lead.
II. Led ·Impf & ·p.p. of Lead.

Wikipedia

Light-emitting diode

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, releasing energy in the form of photons. The color of the light (corresponding to the energy of the photons) is determined by the energy required for electrons to cross the band gap of the semiconductor. White light is obtained by using multiple semiconductors or a layer of light-emitting phosphor on the semiconductor device.

Appearing as practical electronic components in 1962, the earliest LEDs emitted low-intensity infrared (IR) light. Infrared LEDs are used in remote-control circuits, such as those used with a wide variety of consumer electronics. The first visible-light LEDs were of low intensity and limited to red. Early LEDs were often used as indicator lamps, replacing small incandescent bulbs, and in seven-segment displays. Later developments produced LEDs available in visible, ultraviolet (UV), and infrared wavelengths, with high, low, or intermediate light output, for instance white LEDs suitable for room and outdoor area lighting. LEDs have also given rise to new types of displays and sensors, while their high switching rates are useful in advanced communications technology with applications as diverse as aviation lighting, fairy lights, automotive headlamps, advertising, general lighting, traffic signals, camera flashes, lighted wallpaper, horticultural grow lights, and medical devices.

LEDs have many advantages over incandescent light sources, including lower power consumption, longer lifetime, improved physical robustness, smaller size, and faster switching. In exchange for these generally favorable attributes, disadvantages of LEDs include electrical limitations to low voltage and generally to DC (not AC) power, inability to provide steady illumination from a pulsing DC or an AC electrical supply source, and lesser maximum operating temperature and storage temperature. In contrast to LEDs, incandescent lamps can be made to intrinsically run at virtually any supply voltage, can utilize either AC or DC current interchangeably, and will provide steady illumination when powered by AC or pulsing DC even at a frequency as low as 50 Hz. LEDs usually need electronic support components to function, while an incandescent bulb can and usually does operate directly from an unregulated DC or AC power source.

As a transducer of electricity into light, LEDs operate in reverse of photodiodes.

Examples of use of LED
1. Que le soleil brille et les bâtiments scandent des couleurs vives, bande verticale par bande verticale, projecteur LED par projecteur LED.
2. Led Zeppelin, le come–back! – Le groupe Led Zeppelin remonte sur sc';ne ŕ Londres pour la premi';re fois depuis 27 ans.
3. Car Led Zeppelin n‘a pas fait que reconquérir ses fans.
4. La neige virevolte dans un jeu d‘éclairage par LED en rotation.
5. Panoplie 06 En camping (5/6). Albertine Bourget Vendredi 28 juillet 2006 LED.