The PNP transistor turns on when there is no current at the base of the transistor. In PNP transistor they are two differences between both P, that is doping and the size of both p is different.Ī transistor in which there is one n-type semiconductor that is doped by two p-type semiconductors from both sides is called PNP transistor. Thee are two types of transistors NPN and PNP transistor.
The emitter emits the charges and these charges are collected by the collector. The transistor has three regions that are emitter, base, collector. In a transistor, one semiconductor is sandwiched from both sides by another semiconductor. With the help of diodes, amplification of the signal is not possible and that is the reason we use transistors. Semiconductors are basically used in manufacturing two devices that are diodes and transistors.
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