Identification of 3 terminal of a Transistor and to calculate Gain in CE Mode

Experiment No: 8

Experiment Name:

of 3 terminal of a Transistor and to calculate Gain in CE Mode

Theory:

A transistor is a semiconductor device used to amplify or switch electronic signals and electrical power. It is composed of semiconductor material usually with at least three terminals for connection to an external circuit. A voltage or current applied to one pair of the transistor’s terminals controls the current through another pair of terminals. Because the controlled (output) power can be higher than the controlling (input) power, a transistor can amplify a signal. Today, some transistors are packaged individually, but many more are found embedded in integrated circuits.

An NPN transistor is a semiconductor device with three distinct areas: a P-region sandwiched between two N-regions.

An PNP transistor is a semiconductor device with three distinct areas: an N-region sandwiched between two P-regions.

Observation:

Current Gain = Collector current / Base current

Apparatus Used:

Remarks:

The flat surface of the transistor is to be kept towards the center part of the test slot.