3 All About Transistor Family
3.1 Introduction
In the field of Integrated circuits (IC), the world famous observation acknowledged
as Moore’s law, and it states that amount of components per IC leading to lowest
manufacturing cost every year. These days this law is used to designate high speed
processing devices in the field of electronics and computation [32–34] (Fig. 1).
4 Quick Overview of the Technology with Terminology
4.1 Transistor’s Working Principle
Current or voltage between two terminals is controlled by slight quantity of current
or voltage through the third one. Transistors are being classified as (i) BJT and
(ii) FET.
(i) Bipolar Junction Transistor (BJT) is a current variable device that controls the
amount of current passing through the Emitter to the Collector terminals in
proportion to the amount of applied biasing voltage on the base terminal. On
the basis of type of majority charge carriers involved it can be further classified as NPN and PNP type transistors [35].
(ii) Field Effect Transistor (FET) is a three terminal device in which current
conduction takes place through “channel” sandwiched between Source &
Drain terminals and width of channel varies as a function of applied gate
Fig. 1 Classification of transistor family
Materials for Electrical Detection of Water Pollutants
111
3.1 Introduction
In the field of Integrated circuits (IC), the world famous observation acknowledged
as Moore’s law, and it states that amount of components per IC leading to lowest
manufacturing cost every year. These days this law is used to designate high speed
processing devices in the field of electronics and computation [32–34] (Fig. 1).
4 Quick Overview of the Technology with Terminology
4.1 Transistor’s Working Principle
Current or voltage between two terminals is controlled by slight quantity of current
or voltage through the third one. Transistors are being classified as (i) BJT and
(ii) FET.
(i) Bipolar Junction Transistor (BJT) is a current variable device that controls the
amount of current passing through the Emitter to the Collector terminals in
proportion to the amount of applied biasing voltage on the base terminal. On
the basis of type of majority charge carriers involved it can be further classified as NPN and PNP type transistors [35].
(ii) Field Effect Transistor (FET) is a three terminal device in which current
conduction takes place through “channel” sandwiched between Source &
Drain terminals and width of channel varies as a function of applied gate
Fig. 1 Classification of transistor family
Materials for Electrical Detection of Water Pollutants
111