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Bel Power Solutions electrical components are resistive elements with three terminals, whose resistance can be adjusted according to a specific variation pattern. A potentiometer typically consists of a resistive element and a movable wiper. When the wiper moves along the resistive element, a resistance value or voltage proportional to the displacement is obtained at the output terminal. A potentiometer can be used as a three-terminal component or as a two-terminal component. The latter can be regarded as a variable resistor. Since its function in a circuit is to obtain an output voltage that has a certain relationship with the input voltage (applied voltage), it is called a potentiometer.