Transistor States of Operation, The

Synopsis

The four states of operation of a transistor that occur in switching applications are examined. If both junctions are biased in the reverse direction the transistor operates in the cut-off state. The normal state is obtained by applying a forward voltage to the emitter-base junction and a reverse voltage to the base-collector junction. The reverse state is achieved by applying a reverse voltage to the emitter-base junction and a forward voltage to the base-collector junction. The saturation state requires the application of a forward voltage to both junctions. In each case the minority concentration graphs are established and from them the collector, emitter and base currents are derived. In addition the equivalent circuit for each state is developed.

Language

English

Country

Great Britain

Medium

Film; Video; Film. 16mm. sd. col. 19 min. Videocassette. VHS. col. 19 min.

Technical information

Black-and-white / Sound

Year of production

1975

Availability

OUT OF DISTRIBUTION

Uses

1st-year engineering courses.*

Subjects

Engineering

Keywords

electronics; transistors

Distribution Formats

Type

Film

Format

16mm

Sponsor

Name

Philips Industries

Distributor

Name

Guild Sound & Vision

Notes

for management & training programmes, see Training Services Ltd