MOS Transistors
MOS transistors, (or
MOSFETs), also have three 'legs', whose functions are
analagous to those of their
bipolar brethren. The
terminals are named:
Electrons flow from source to drain. The flow of current is controlled by the gate terminal of the transistor.
MOS transistors come in two types; p-type, (called PMOS), and n-type, (or NMOS). They can also be manufactured to operate in one of two modes; depletion-mode or enhancement-mode.