A field effect transistor (FET) is a type of transistor commonly used for weak signal amplification (for example, for amplifying wireless signals). The device can amplify analog or digital signals. It can also switch DC or function as an oscillator.
Field Effect Transistor – while the most common type of device fabricated in silicon semiconductor manufacturing is the CMOS FET (complementary metal oxide semiconducting FET), compound semiconductors use different kinds of FETs. New types of FETs are expected to become more important in upcoming device generations.
(abbreviation/component) Field-effect transistor. A transistor controlled by voltage rather than current. The flow of working current through a semiconductor channel is switched and regulated by the effect of an electric field exerted by electric charge in a region close to the channel called the gate.
(Field Effect Transistor) Bilateral FETs are semiconductors used as the output switch of some sensing devices for their ability to switch either AC or DC, their low on-state voltage drop, and their low off-state leakage current. FETs are not tolerant of inrush current, typical, or inductive loads.
FIELD EFFECT TRANSISTOR. A transistor consisting of a gate, source, and drain. The voltage applied to the gate controls the conductivity of the channel between the source and drain. Examples of FETs are the MOSFET, JFET
Abbreviation for field-effect transistor. A semiconductor so named because a weak electrical signal coming in through one electrode creates an electrical field through the rest of the transistor. This field flips from positive to negative when the incoming signal does, and controls a second current traveling through the rest of the transistor. The field modulates the second current to mimic the first one, but it can be substantially larger. Fiber Fuse: A mechanism whereby the core of a single-mode fiber can be destroyed at high optical power levels.(Photo courtesy of Dr. D.D.Davis.)
forced expiratory technique. A strong expiration made by contracting the abdominal muscles while keeping the mouth and glottis open (unlike a cough, which requires closure of the glottis), also called huff technique.