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Field-E ect (FET) transistors

Chia sẻ: Van Kent Kent | Ngày: | Loại File: PDF | Số trang:14

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In a field-effect transistor (FET), the width of a conducting channel in a semiconductor and, therefore, its current-carrying capability, is varied by the application of an electric field (thus, the name field-effect transistor). As such, a FET is a “voltage-controlled” device. The most widely used FETs are Metal-Oxide-Semiconductor FETs (or MOSFET). MOSFET can be manufactured as enhancement-type or depletion-type MOSFETs. Another type of FET is the Junction Field-Effect Transistors (JFET) which is not based on metal-oxide fabrication technique. FETs in each of these three categories can be fabricated either as a n-channel device or a p-channel device. As transistors in...

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