Product Description

Potentiometer (English: Potentiometer) is a type of variable resistor. It is usually composed of a resistor body and a rotating or sliding system, that is, a moving contact moves on the resistor body to obtain part of the voltage output.
The role of the potentiometer - adjust the voltage (including DC voltage and signal voltage) and the size of the current.
Structural features of the potentiometer - the resistor body of the potentiometer has two fixed ends. By manually adjusting the shaft or the sliding handle, changing the position of the movable contact on the resistor body changes the distance between the movable contact and any fixed end. resistance value, thus changing the magnitude of the voltage and current.
A potentiometer is an adjustable electronic component. It consists of a resistive 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 contacts on the resistor body is changed by a rotating or sliding system, and a position corresponding to the moving contact can be obtained between the moving contact and the fixed contact voltage in a certain relationship. It is mostly used as a voltage divider, where the potentiometer is a four-terminal element. Potentiometers are basically sliding rheostats. There are several styles. They are generally used in speaker volume switches and laser head power adjustment. Potentiometers are an adjustable electronic component.
Variable resistor for voltage divider. On the exposed resistor body, press one or two removable metal contacts. The contact position determines the resistance between either end of the resistor body and the contact. According to the material, it is divided into wire-wound, carbon film and solid-core potentiometers; according to the relationship between the output and input voltage ratio and the rotation angle, it is divided into linear potentiometers (in a linear relationship) and function potentiometers (in a curvilinear relationship). The main parameters are resistance, tolerance and rated power. Widely used in electronic equipment for volume control in audio and receivers.

Potentiometers are used to manually change resistance in a circuit or to measure the potential difference across a circuit; therefore, potentiometers are called voltage metering devices. The first potentiometer was invented and patented by inventor George Little in 1871. Potentiometers are passive electronic devices, i.e. they do not generate energy, they only store or dissipate energy in the form of electrical current. A potentiometer is a versatile device; besides measuring potential differences, it is used for other purposes, such as dividing voltage, comparing the electromotive force of a battery, and, of course, as a variable resistor.

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