Slide potentiometer is a variable resistor that consists of three pins: two fixed ends and a central tap (sliding contact). The resistance track between the fixed ends is usually made of a conductive material such as carbon film, metal film, or wire wound. The center tap can slide over the resistance track to change the resistance value between the two fixed ends. The resistance value in the circuit is adjusted by the movement of its sliding contact, and then the size of the current is controlled or other circuit parameters are adjusted. The core structure consists of a fixed resistance element (track) and a contact that can slide on it, which is designed so that the resistance value changes continuously with the change of the position of the contact.

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