by Wiley .
Written in English
|Statement||by C.D. Todd.|
Junction Field Effect Transistor (JFET) The single channel junction field-effect transistor (JFET) is probably the simplest transistor available. As shown in the schematics below (Figure in your text) for the n-channel JFET (left) and the p-channel JFET (right), these devices are simply an area of doped silicon with two diffusions of the. Fred G. Turnbull, Ondrej Pauk, in Reference Data for Engineers (Ninth Edition), Field-Effect Transistors. The field-effect transistor is also used as a controlled switch in high-voltage and high-frequency power circuits. The three terminals, drain, gate, and source, in an n-channel device bear the same relationship as the collector, base, and emitter in an NPN bipolar transistor. Field-Effect and Bipolar Power Transistor Physics introduces the physics of operation of power transistors. It deals with bipolar devices as well as field-effect power transistors. The book provides an up-to-date account of the progress made in power transistor design. This volume consists of three parts. Field-effect transistors control the current between source and drain connections by a voltage applied between the gate and source. In a junction field-effect transistor (JFET), there is a PN junction between the gate and source which is normally reverse-biased for control of source-drain current. JFETs are normally-on (normally-saturated) devices.
The junction field effect transistor or JFET is widely used in electronics circuits. The junction field effect transistor is a reliable and useful electronic component that can be used very easily in a variety of electronic circuits ranging from JFET amplifiers to JFET switch circuits. Additional Physical Format: Online version: Todd, Carl David. Junction field-effect transistors. New York, Wiley  (OCoLC) Document Type. JUNCTION FIELD-EFFECT TRANSISTOR (JFET) Inits simplest formthejunctionfield-effect transistorstarts with nothing more than a bar of doped silicon that behaves as a resistor (Figure 1a). By convention, the terminal into which current is injected is called the source terminal, since, as far as the FET is concerned, current originates from this. Field Effect Transistors JFETs (Junction Field Effect Transistors) Although there are lots of confusing names for field effect transistors (FETs) there are basically two main types: 1. The reverse biased PN junction types, the JFET or Junction FET, (also called the JUGFET or Junction Unipolar Gate FET). 2. The insulated gate FET devices (IGFET).
junction between gate and channel. Indeed, it is the reverse bias on this junction that is used to control the channel width and hence the current flow from drain to source. The major role that this pn junction plays in the operation of this FET has given rise to its name: Junction Field-Effect Tran-sistor (JFET). FIGURE (a) Basic File Size: 1MB. The field effect transistor, FET is a key semiconductor device for the electronics industry. The FET used in many circuits constructed from discrete components in areas from RF technology to power control and electronic switching to general amplification. However the major use for the field effect transistor, FET is within integrated circuits. The unipolar field effect transistor is conceptually simple, but difficult to manufacture. Most transistors today are a metal oxide semiconductor variety (later section) of the field effect transistor contained within integrated circuits. However, discrete JFET devices are available. Junction field effect transistor cross-section. A bipolar junction transistor (bipolar transistor or BJT) is a type of transistor that uses both electrons and holes as charge carriers. Unipolar transistors, such as field-effect transistors, use only one kind of charge carrier.A bipolar transistor allows a small current injected at one of its terminals to control a much larger current flowing between two other terminals, making the .