ABSTRACT
The common-source MOSFET amplifier with which this topic begins is a typical transistor amplifier.
The amplifier is built around an n-channel enhancement mode MOSFET. Given a fixed supply voltage VDD, the size of the current iD flowing through the transistor depends on vGS, the voltage difference between the gate (g) and the source (s). Current flows in at the drain (d) and out of the source (s).
