Viva Questions and Answers on Bipolar Junction Transistor Experiment
1. Briefly discuss about a transistor?
We
can simply say that, a “junction
transistor is simply a sandwich of one type of semiconductor material between
two layers of the other type”. A transistor has three terminals namely
emitter, base and collector. A transistor is a current sensing device.
Transistor was developed in the year 1948 at BELL laboratories. A transistor
can be seen as two p-n junction placed back to back. The emitter is heavily
doped, while the base is lightly doped. The collector is moderately doped. A
transistor can be considered as the heart of electronic products. It is almost
used in all electronic devices. There are mainly two types of transistors
namely, pnp and npn transistors.
2.
Discuss about a Bipolar Junction Transistor (BJT), explain about its terminals,
types, and mention which type is better? Justify your answer?