1 Answer
A PNP transistor is simply called a "PNP" transistor, where "PNP" stands for the arrangement of semiconductor materials used in it: **P** type (positive) material, **N** type (negative) material, and **P** type (positive) material again.
In this type of transistor, current flows from the **collector** to the **emitter**, and the transistor is "on" when a small current flows from the **base** to the **emitter**. The PNP transistor is often used in applications where you need to switch or amplify signals, just like the NPN transistor, but with opposite polarity.
To put it simply, the current direction is reversed compared to an NPN transistor. In an NPN transistor, current flows from the emitter to the collector, but in a PNP transistor, current flows in the opposite direction (from the collector to the emitter).
In this type of transistor, current flows from the **collector** to the **emitter**, and the transistor is "on" when a small current flows from the **base** to the **emitter**. The PNP transistor is often used in applications where you need to switch or amplify signals, just like the NPN transistor, but with opposite polarity.
To put it simply, the current direction is reversed compared to an NPN transistor. In an NPN transistor, current flows from the emitter to the collector, but in a PNP transistor, current flows in the opposite direction (from the collector to the emitter).