Briefly explain the construction and application of a JFET. - Electronics

Briefly explain the construction and application of a JFET.

- JFET stands for Junction Field Effect transistor. This device uses one electrical field signal to control another. Electrical fields varying in one region is used to control current flow between two other terminals.

Some of the applications of JFET are-

-Solving Analog problems: It is used in solving real-world, small-signal-chain problems typically requiring low power, high impedance and low noise.

-Military applications: They also offer excellent radiation and temperature tolerance, required in many military applications.

Advantages of JFET are-

-It is a voltage controlled device, not current controlled.

-It shows a high degree of isolation between input and output signals.

-It is a unipolar device. Hence, the charge carriers are either only electrons or only holes.

-It makes less noise compared to other devices.