LED Bulb Luminous Principle

- Jul 27, 2017 -

Light Emitting diode bulbs, both structurally and in principle, are fundamentally different from traditional incandescent lamps, which are commonly used components in electronic circuits, which are semiconductor pn junctions, plus electrode lead and Shell made, diode has PN junction two electrodes, so called diode, diode has one-way conductivity, diode of a lot of kinds, common has detection tube, rectifier tube, regulator, switch tube, damping diode, light-emitting tube, photoelectric tube and so on.

Light-emitting diodes are usually made of gallium arsenide, gallium phosphide and other semiconductor materials, it shines through the positive current, the luminous color depends on the material used, can emit red, yellow, green and infrared light, light-emitting diode generally with transparent plastic package, tube feet long for the positive, pin short for the negative, some light-emitting diode has three pins, according to the pin voltage situation can emit two of colors of light.


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