The 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.
The potentiometer is a resistance element with three lead-out ends and the resistance value can be adjusted according to a certain change rule. The potentiometer is usually composed of a resistor and a movable brush. When the brush moves along the resistor body, the resistance value or voltage that has a certain relationship with the displacement is obtained at the output end.
The 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 winding, carbon film, and solid core potentiometer; according to the relationship between the output and input voltage ratio and the rotation angle, it is 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.
Digital potentiometer, also known as numerically controlled programmable resistor, is a new CMOS digital and analog mixed signal processing integrated circuit that replaces traditional mechanical potentiometers (analog potentiometers). The digital potentiometer is controlled by a digital input and produces an analog output. Depending on the digital potentiometer, the maximum tap current can range from a few hundred microamps to a few milliamperes.
Coaxial potentiometer is a kind of potentiometer. Usually, two potentiometers of the same specification are installed on the same shaft. When the shaft is adjusted, the sliding contacts of the two potentiometers rotate synchronously.
The coaxial potentiometer is used to adjust the volume balance of 2 channels. This potentiometer is very special. When it is turned in the middle position, the resistance value of the middle leg of one of the potentiometers to the left leg is zero (in an emergency, turn the circuit The pads of these two pins on the board are short-circuited with copper wires), and the resistance of the middle pin of the other potentiometer to the right pin is zero. This can only be replaced by the same potentiometer, no other potentiometer can be used instead. , But the resistance does not have to be 100 kiloohms, it can be used between 20 and 100 kiloohms.
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