transistor: The Field-Effect Transistor
The Field-Effect Transistor
A very important type of transistor developed after the junction transistor is the field-effect transistor (FET). It draws virtually no power from an input signal, overcoming a major disadvantage of the junction transistor. An
The metal-oxide semiconductor field-effect transistor (MOSFET) is a variant in which a single gate is separated from the channel by a layer of metal oxide, which acts as an insulator, or dielectric. The electric field of the gate extends through the dielectric and controls the resistance of the channel. In this device the input signal, which is applied to the gate, can increase the current through the channel as well as decrease it.
Sections in this article:
- Invention and Uses of the Transistor
- The Field-Effect Transistor
- The Junction Transistor
- Types of Transistors
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