The potentiometer is a resistance element with three terminals and the resistance value can be adjusted according to a certain change rule. Potentiometers usually consist of resistors and movable brushes. When the brush moves along the resistor body, a resistance value or voltage having a certain relationship with the displacement is obtained at the output end.
The potentiometer can be used as a three-terminal component or a two-terminal component. The latter can be regarded as a variable resistor. Because its role in the circuit is to obtain an output voltage that has a certain relationship with the input voltage (external voltage), it is called a potentiometer.
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 rotating shaft or slider to change the position of the moving contact on the resistor body, the moving contact and any fixed end are changed. The value of the resistance changes the magnitude of voltage and current.
Potentiometer is an adjustable electronic component. It is composed of a resistor and a rotating or sliding system. When a voltage is applied between the two fixed contacts of the resistor, the position of the contact on the resistor can be changed by rotating or sliding the system, and a moving contact position can be obtained between the moving contact and the fixed contact Voltage. It is mostly used as a voltage divider, then the potentiometer is a four-terminal element. The potentiometer is basically a sliding rheostat. There are several styles. It is generally used in the volume switch of the speaker and the power adjustment of the laser head. The potentiometer is an adjustable electronic component.
Variable resistor for voltage division. On the bare resistor, 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 winding, carbon film, solid core potentiometer; according to the relationship between output and input voltage ratio and rotation angle, it is divided into linear potentiometer (linear relationship) and function potentiometer (curve relationship). The main parameters are resistance, tolerance and rated power. Widely used in electronic equipment, used for volume control in audio and receiver.
Working principle of potentiometerWhen a voltage is applied to the two fixed electric shock divisions of the resistor body, the position of the contact on the resistor body can be changed by rotating or bone movement system, and a moving contact position can be obtained between the moving contact and the fixed contact Voltage. It is mostly used as a voltage divider, which is a potentiometer is a four-terminal element. The potentiometer is basically a sliding rheostat, there are several styles, generally used in the speaker volume switch and the laser head power adjustment potentiometer is an adjustable electronic component.
It is composed of a resistor and a rotating or sliding system. When a voltage is applied to the two fixed electric shock parts 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 Voltage.
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