DEFINE TRANSISTOR IN CHEMISTRY FULL
Learn More: What Is MOSFET | Basic, Working Principle MOSFET Full Explanation This region is formed due to the attraction of holes in the base region and electrons in the emitter region, finally it creates an internal electric field and the value will be around 0.7 Volts for silicon semiconductor and 0.3 for germanium conductor. Transistor Working PrincipleĮmitter Region:heavily doped, N type semi-conductor, High Number of free electrons, Intermediate size.įorward barrier region: The region between base and emitter. They are emitter region, forward barrier region, base region, reverse barrier region, and collector region. Note: Common base mode means the common terminal of the transistor is considering as base terminal.īefore understanding about Transistor working principle, You should know the meaning of the following region in the transistor. Let’s we take common base mode of NPN Transistor. Learn More: BIPOLAR JUNCTION TRANSISTOR (BJT) Terminal Notations:Ĭollector => Collects the electrons for NPN (for PNP it collects the holes)Ĭollector is a largest region as compared with emitter and base region. In our NPN transistor, the emitter terminal is heavily doped and it emits the electrons, Base terminal lightly doped and Collector terminal doped intermediate between other two.
Finally, we get Three Terminal Such as Collector (C), emitter (E) and Base (B) terminals. Two anti-parallel diodes jointly create a NPN Transistor, which means NP+PN = NPN Transistor. In this article we are going to talk about NPN Transistor. Also BJT is divided in to two types according to the diode connection. One is BJT (Bipolar Junction Transistor) in that the current flow is due to both majority and minority carriers, whereas in FET (Field Effect Transistor), the current flows due to majority carriers. However, they have two types according to the flow of charge carriers. An anti-parallel diode is called transistor, which means two diodes are connected reversely to form a new electronics component, such components are called Transistor. Transistor is nothing but a transferred resistor (Transistor = transferred + resistor).
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