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LEDs (light-emitting diode) are semiconductor diodes, electronic devices that permit current to flow in only one direction. The diode is formed by bringing two slightly different materials together to form a PN junction. In a PN junction, the P side contains excess positive charge ("holes," indicating the absence of electrons) while the N side contains excess negative charge (electrons).
When a forward voltage is applied to the semiconducting element forming the PN junction (heretofore referred to as the junction), electrons move from the N area toward the P area and holes move toward the N area. Near the junction, the electrons and holes combine. As this occurs, energy is released in the form of light that is emitted by the LED.
Bundle includes:
2 pcs RED
2 pcs GREEN
2 pcs BLUE
2 pcs YELLOW
2 pcs WHITE
This seller has been a member since: Nov. 24, 2015
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Total Classifieds: 1021
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