LIGHT-EMITTING DIODES (LEDs)


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LIGHT-EMITTING DIODES (LEDs)
LIGHT-EMITTING DIODES (LEDs)131. Light-emitting diodes (LEDs)‚ÄÉrepresent a major new area of development in the evolution of artificial illumination. Formerly reserved for low-power signaling, they are steadily gaining power and whiteness to take their place as a source of conventional lighting. An LED is a semiconductor diode that gives off light when voltage is applied so as to electrically bias the p-n junction (refer to Div. 6, Sec. 6 and Sec. 11 for details of how this works) in the forward direction. Conventional diodes, such as those made from silicon or germanium, do not radiate in this process, but some materials …
Citation
Terrell Croft; Frederic P. Hartwell; Wilford I. Summers: American Electricians' Handbook, Sixteenth Edition. LIGHT-EMITTING DIODES (LEDs), Chapter (McGraw-Hill Professional, 2013), AccessEngineering Export