Question

How many depletion regions does a transistor have?

Answer 1

Definition of a transistor.

1. A transistor is an electronic component that can be used to amplify or transport electrical signals or power in circuits.
2. It can be found in a wide range of electronic devices.
3. A transistor made out of two PN diodes connected in series. Emitter, base, and collector are the three terminals.

Depletion regions in a transistor.

1. A bipolar junction transistor, or BJT, is a current-controlled device that functions by combining two PN junctions.
2. There are two places that are depleted.
3. The thickness of the depletion layer will be determined by the biasing condition applied to the junction.

Hence, there are two depletion regions in a transistor.