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  2. GU24 lamp fitting - Wikipedia

    en.wikipedia.org/wiki/GU24_lamp_fitting

    The design was initiated by the U.S. EPA and the Lighting Research Center in 2004, in order to facilitate the deployment of compact fluorescent light bulbs with replaceable ballasts. [1] The GU24 fitting is compliant with a 2008 ruling by the California Energy Commission under Title 24 (California Building Standards Code) to require high ...

  3. LED tube - Wikipedia

    en.wikipedia.org/wiki/LED_tube

    LED tube is a type of LED lamp used in fluorescent tube luminaires with G5 and G13 bases to replace traditional fluorescent tubes. [1] As compared to fluorescent tubes, the most important advantages of LED tubes are energy efficiency and long service life. LED tubes are sometimes also referred to as ‘LED fluorescent tubes’.

  4. Phosphorescent organic light-emitting diode - Wikipedia

    en.wikipedia.org/wiki/Phosphorescent_organic...

    Phosphorescent organic light-emitting diodes (PHOLED) are a type of organic light-emitting diode (OLED) that use the principle of phosphorescence to obtain higher internal efficiencies than fluorescent OLEDs. This technology is currently under development by many industrial and academic research groups.

  5. File:Fluorescent Light.svg - Wikipedia

    en.wikipedia.org/wiki/File:Fluorescent_Light.svg

    This work has been released into the public domain by its author, Inkwina.This applies worldwide. In some countries this may not be legally possible; if so: Inkwina grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

  6. Light-emitting diode physics - Wikipedia

    en.wikipedia.org/wiki/Light-emitting_diode_physics

    Since these materials have a high index of refraction, [note 1] design features of the devices such as special optical coatings and die shape are required to efficiently emit light. A LED is a long-lived light source, but certain mechanisms can cause slow loss of efficiency of the device or sudden failure.

  7. LED circuit - Wikipedia

    en.wikipedia.org/wiki/LED_circuit

    Simple LED (Light Emitting Diode) circuit diagram. In electronics, an LED circuit or LED driver is an electrical circuit used to power a light-emitting diode (LED). The circuit must provide sufficient current to light the LED at the required brightness, but must limit the current to prevent damaging the LED.

  8. Light-emitting diode - Wikipedia

    en.wikipedia.org/wiki/Light-emitting_diode

    Very small (1.6×1.6×0.35 mm) red, green, and blue surface mount miniature LED package with gold wire bonding details. These are mostly single-die LEDs used as indicators, and they come in various sizes from 1.8 mm to 10 mm, through-hole and surface mount packages. [47] Typical current ratings range from around 1 mA to above 20 mA.

  9. Fluorescent lamp - Wikipedia

    en.wikipedia.org/wiki/Fluorescent_lamp

    A fluorescent lamp, or fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. An electric current in the gas excites mercury vapor, to produce ultraviolet and make a phosphor coating in the lamp glow.