Stories about: solid state devices

How LEDs Work Light emitting diodes, or most commonly known as LEDs, are solid-state electronic devices used to produce light. Practically LEDs are a special type of diodes encased into tiny transparent plastic bulbs, which emit light when powered. Unlike traditional light bulbs and fluorescent tubes, LEDs do not use metal filamen...	9 April 2008 10:48 GMT

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How LEDs Work