FETs, MOSFETs

Field-effect transistors (FETs) are electronic devices that regulate current flow through the manipulation of an electric field. By applying a voltage to the gate terminal, the conductivity between the drain and source terminals can be modified. FETs are categorized as unipolar transistors due to their reliance on a single carrier type for operation, utilizing either electrons or holes as charge carriers, but not both. These transistors typically exhibit exceptionally high input impedance at low frequencies. A specific type of FET is the Metal Oxide Semiconductor Field-Effect Transistor (MOSFET).