What is a Transistor? Describe two types of the transistor with the help of diagrams. | web4study

What is a Transistor? Describe two types of the transistor with the help of diagrams.

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TRANSISTORS:

A transistor is a three pieces semi-conductor having a thin central layer of one type of semiconductor, sandwiched between two relatively thick pieces of the other type. It is used as an amplifier.

Type of Transistors:

There are two types of transistors. (i) NPN transistors (ii) PNP transistors

(i) NPN transistors:

NPN transistors have a thin piece of p-type material sandwiched between two thick pieces of n-type.

NPN transistors

(ii) PNP transistors:

PNP transistors consist of a thin piece of n-type material in between two thick pieces of p-Type

PNP transistors

The central part in each is called ‘base’ and the pieces at either side are called emitter (e) and the collector (c)


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