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Thursday, 17 November 2011

PNP Transistor

A transistor in which an N-type semiconductor is sandwiched between tow P-type semiconductors, is known as PNP transistor. (Shown in Figure)
In the p-region, majority carriers are holes or protons, and in the n-region, majority carriers are electrons.

Symbol of PNP Transistor
As conventional current flows in the transistors, so charge carriers start moving from emitter and they are collected at collector.




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