What is a potentiometer

Potentiometer (English: Potentiometer) is a kind of variable resistor. It is usually composed of a resistor body and a rotating or sliding system, that is, a movable contact moves on the resistor body to obtain part of the voltage output.

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The role of the potentiometer-adjust the voltage (including DC voltage and signal voltage) and the size of the current.

The structural characteristics of the potentiometer-the resistor body of the potentiometer has two fixed ends. By manually adjusting the shaft or sliding handle, changing the position of the movable contact on the resistor body will change the position between the movable contact and any fixed end. The resistance value, which changes the size of the voltage and current.

　　 Potentiometer is an adjustable electronic component. It is composed of a resistor body and a rotating or sliding system. When a voltage is applied between the two fixed contacts of the resistor body, the position of the contact on the resistor body is changed by rotating or sliding the system, and a moving contact position can be obtained between the moving contact and the fixed contact. The voltage of a certain relationship. It is mostly used as a voltage divider, at this time the potentiometer is a four-terminal element. The potentiometer is basically a sliding rheostat. There are several styles, which are generally used to adjust the volume of the speaker and the power of the laser head. The potentiometer is an adjustable electronic component.

　　 Variable resistor used for voltage division. On the bare resistor body, one or two movable metal contacts are pressed tightly. The position of the contact determines the resistance between either end of the resistor and the contact. According to the material, it is divided into wire-wound, carbon film, and solid-core potentiometer; according to the relationship between the output and input voltage ratio and the rotation angle, it can be divided into linear potentiometer (in a linear relationship) and function potentiometer (in a curve relationship). The main parameters are resistance, tolerance, and rated power. It is widely used in electronic equipment for volume control in speakers and receivers.