Thursday, November 29, 2012

How light bulb glows?

An LED lamp uses light emitting diode as the source which comes under solid state devices.It offers long life and energy efficiency with low cost than those of fluorescent and incandescent lamps.



The chassis of the bulb is made of ceramic and houses the electronic ballast. Ceramic is used for its insulating and heat dissipative properties. The LED bulb is housed inside a phosphor coated glass dome.Remote phosphor is used to provide constant wavelength and enhance light output.  This also enables the LED to emit only a single colored light throughout its lifetime while also reducing glare at the same time.







Courtesy:engineersgarage.com


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