Advantage of Mosfet

Advantage of Mosfet

1.  Mosfet can be applied to zoom in. Since the input impedance of the FET amplifier is very high, the capacitance of the coupling capacitor can be small, so there is no need to use an electrolytic capacitor.

2. High input impedance is very suitable for impedance transformation. It is often used for impedance transformation in the input stage of multistage tamplifiers.

3.  Mosfet can be used as a variable resistor.

4.  Mosfet can be conveniently used as a constant current source.

5.  Mosfet can be used as an electronic switch.

6. Great flexibility in circuit design. The grid bias can be positive, negative, or zero. The triode can only work under positive bias, and the electron tube can only work under negative bias. In addition, the input impedance is high, which can reduce the load of the signal source and is easy to match with the previous stage.