logo

Video encyclopedia

Transistor

2:18

Transistor circuit symbols | Semiconductor Devices and their Applications

3:06

CSEM - Organic Thin Film Transistors

3:02

Semiconductors, PN Junctions and Bipolar Junction Transistors | HKUSTx on edX

2:03

Bipolar Transistors - Semiconductor Devices Theory 5 Segment 1

2:31

What are Transistors and How do they work? - A Galco TV Tech Tip

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.
  • Other American inventions 

  • Types 

  • Also related