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A metal-oxide-semiconductor field-effect transistor (MOSFET) is a type of transistor that can control electronic signals. The basic principle of a MOSFET is that the electrons (change carriers) flow along channels; the conduction of a MOSFET is determined by channel width which can be varied through gates (electrodes).
A metal-oxide-semiconductor field-effect transistor is most commonly used for amplifying or switching electronic signals by varying current through them. They are used in network hardware equipment for high-speed switching and integrated circuits in computers. The broader the channel, the better the transistor conducts. The charged electron enters the channel from the source point, and leaves through a drain. A gate electrode controls the width of the channel by varying the voltage on and through it. The gate is placed between the source and drain and is insulated from the channel by an extremely thin layer of metal oxide. The insulation prevents the current from flowing between the gate and channel.
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