FET amplifier

A FET amplifier is an amplifier that uses one or more field-effect transistors (FETs). The main advantage of a FET used for amplification is that it has very high input impedance and low output impedance. A FET amplifier is an amplifier that uses one or more field-effect transistors (FETs). The main advantage of a FET used for amplification is that it has very high input impedance and low output impedance. The transconductance is given by