MOSFET

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What is MOSFET?

The MOSFET, also known as a metal-oxide-semiconductor field-effect transistor, is a type of FET with an insulated gate that is assembled by the controlled oxidation of that semiconductor. The semiconductor used in it is generally silicon.

In more detail, we can explain that it is a four-a terminal-based device that is composed of a,

  • Source(S)
  • Gate (G)
  • Drain (D)
  • Body (B)

In a general overview, the body of a MOSFET is in connection with its source terminal hence forming a three-terminal device such as a field-effect transistor.

It is normally considered a transistor and is utilized in both digital circuits and analog circuits.

A MOSFET can function in two ways

  • Depletion Mode
  • Enhancement Mode

Enhanced Mode

Enhanced mode can be defined as if there is no voltage across the gate terminal then the device will not conduct. But when there is a maximum voltage present across the gate terminal then the conductivity of the device gets enhanced.

Depletion Mode

Depletion mode can be defined as if there is no voltage across the gate terminal then the device will show maximum conductance. But when the voltage across the gate terminal is either positive or negative then the conductivity of the device decreases

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