Field Effect Transistor (FET)

 

A Field-Effect Transistor (FET) is a type of transistor that controls electrical current by using an electric field. It's widely used in amplifying or switching electronic signals. There are two main types of FETs: 

1. Junction FET (JFET): 

It has a channel of semiconductor material through which current flows. The current flow is controlled by applying a voltage to the gate terminal, which creates an electric field that affects the current between the source and drain terminals.

2. Metal-Oxide-Semiconductor FET (MOSFET):

This is the most commonly used type of FET. It operates similarly to JFET but has an insulating layer between the gate and the channel, allowing better control of the current and reducing power consumption.

FETs are valued for their high input impedance and low power consumption, making them ideal for use in various electronics, such as computers, radios, and integrated circuits.