A basic introduction to the Field Effect Transistor (FET). This includes a basic description of the Junction FET (JFET) and the Metal Oxide FET (MOSFET), and also discusses N-Channel vs. P-Channel, as well as Depletion Mode and Enhancement Mode type devices. The function of the Gate, Source and Drain terminals are reviewed. The linear region and saturation region of operation of the devices is described and demonstrated. Courtesy: w2aew