Field-effect transistor
A field-effect transistor (FET) is a type of transistor that relies on an electric field to control the flow of current. It is a three-terminal device with a source, a gate, and a drain.
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It is a three-terminal device with a source, a gate, and a drain. The gate terminal is used to apply an electric field, which determines whether the device is in an "on" or "off" state. FETs are commonly used in digital circuits due to their fast switching speeds and low power consumption. They come in two basic types: the junction field-effect transistor (JFET) and the metal-oxide-semiconductor field-effect transistor (MOSFET). JFETs are made of semiconductor materials and use a p-n junction to control current flow, while MOSFETs utilize an insulated gate to control current. FETs are widely used in various applications, including amplifiers, switches, and memory devices.