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About Light Emitting Diodes (LED)
Light emitting diodes (LED) are PN junction devices that give off light radiation when biased in the forward direction. Most light emitting diodes function in the near infrared and visible ranges, though there are now UV LEDs. Light emitting diodes are a reliable means of indication compared to light sources such as incandescent and neon lamps. LEDs are solid-state devices requiring little power and generating little heat. Because their heat generation is low and because they do not rely on a deteriorating material to generate light, LEDs have long operating lifetimes. One of the alternatives, incandescent bulbs, consumes much more power, generate a great deal of heat, and rely on a filament that deteriorates with use. Neon bulbs, on the other hand, rely on excited plasma, which, along with its electrodes, can deteriorate over time.
Engineering Web: Light Emitting Diodes LED - Machine Design
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Lighting the 21st century | Machine Design Light-emitting diodes have been around for years as indicator lights. |
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Lights, Lamps & LEDs | Machine Design LED Stack Lights LED-based stack light lamps give visual indication of machine status from anywhere on a factory or office floor. |
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Lighting up the night | Machine Design Light-emitting diodes, or LEDs, are starting to move into traditional lighting areas now dominated by incandescent and fluorescent lights. |
