In a transistor, the collector section is always moderately doped, but however, is large in size in order to collect most of the charge carrier supplied by the emitter. Collector: In a transistor, a collector is a section that collects the majority charge carrier supplied by the emitter and in this case, the collector-base junction is always reverse biased.

The emitter in a transistor is always heavily doped and is moderately sized. With respect to the base, the emitter is always forward biased so that it can supply the majority charge carrier to the base.

Emitter: An emitter supplies a large section of charge carriers.

These three materials have the following functions: Junction Transistors are mainly controlled by current, meaning that even a small amount of current flowing through its base will result in a large current flow from the emitter to the collector. These types of transistors have two junctions between the p-type and n-type of semiconductors.

An n-p-n type of semiconductor where a p-type of semiconductor is between two layers of n-type semiconductor.

A p-n-p type of semiconductor where an n-type of semiconductor is between two layers of p-type semiconductor, or.

Junction Transistors are a combination of two junction diodes and the three-layer structure of these can be of either of the combinations: In a similar manner, the variation of output current, IC with respect to the Collector to emitter voltage VCE, is called output characteristics. (2 marks)Īns. The input characteristics, in common-emitter configuration, are the plot acquired by tracing the variation of input current, IB with respect to the input voltage, VBE. Demonstrate the Input and output characteristics of a transistor. Simply put, the changes in a collector-current is considered proportional to the corresponding changes in the base current. Transistors are often also called current-controlled devices due to the fact that the collector current is usually controlled by the base current.

“Transistors are a current-controlled device.” Justify. Frequently Asked Questions Related to Junction Transistors

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