What Is a Transistor?
A transistor can be described as a device made from semiconductor and is meant to amplify and switch electronic signals. It is manufactured by making use of a piece of solid semiconductor material. The necessary feature about transistor is that it must have minimum of three terminals to make a connection with an external circuit. There is a wide use of transistor in various fields. Before taking a look at the details describing the use of transistor, let us go through little info on transistor’s working.
Transistor works in such a manner that a current is applied at one end consisting of one pair of terminals; it brings changes in the current flowing through another pair of terminals at other end. Since, the controlled power can be much more than the controlling power, there takes place the amplification of a signal. Info to know about transistor is that there are some transistors which are packaged individually however; normally the transistors are embedded in integrated circuits.
One gets an idea about the importance of transistor from the fact that nowadays, the use of transistor is almost there in every electronic device. It won’t be inappropriate to say about transistor that it has become the fundamental building block of modern electronic devices, and its presence is everywhere in modern electronic systems.
The transistor considered as the main component in almost all walks of modern electronics, and is termed as one of the greatest inventions of modern times.
The importance of transistor in today's life resides on its capability to be mass produced using a highly automated process which is possible due to semiconductor device fabrication. It has resulted in making lower cost transistors. Moreover it can perform multiple functions as transistor can act as an amplifier by controlling its output in proportion to the input signal. Or, it can also be used as a switch in high power applications as well as low power application like logic gates.