Question

A power transistor is a

(a) three layer, three junction device

(b) three layer, two junction device

(c) two layer, one junction device

(d) four layer, three junction device

This question was posed to me in an international level competition.

Query is from Power Transistor-1 topic in section Power Electronics Devices of Power Electronics

Answer 1

Correct answer is (b) three layer, two junction device

To elaborate: It has three layers p-n-p or n-p-n forming two p-n junctions.