Potentiometer

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A potentiometer is a three-terminal resistor with a sliding or rotating contact that forms an adjustable voltage divider. If only two terminals are used, one end and the wiper, it acts as a variable resistor or rheostat.

The measuring instrument called a potentiometer is essentially a voltage divider used for measuring electric potential (voltage); the component is an implementation of the same principle, hence its name.

Potentiometers are commonly used to control electrical devices such as volume controls on audio equipment. Potentiometers operated by a mechanism can be used as position transducers, for example, in a joystick. Potentiometers are rarely used to directly control significant power (more than a watt), since the power dissipated in the potentiometer would be comparable to the power in the controlled load.
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  • Potentiometer 100 K Ohm in einer

    Potentiometer 100 K Ohm in einer

    Diese Streichholzschachtel...

    Object information
    Image: ZCOM Zuse-Computer-Museum - CC0

  • Schiebepotenziometer (Schiebewiederstand)

    Schiebepotenziometer (Schiebewiederstand)

    Regelbare Widerstände dient...

    Object information
    Image: Werra-Kalibergbau-Museum, Heringen/W. - CC BY-NC-SA

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