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. In a short video like this, it is impossible to get into depth in any application - the intent with this video is to lay the foundation of the operation of the FET and to make sense of the various terminology surrounding the different types of devices. The notes from this video can be found here: