What is a potentiometer called? How is it structured?

A potentiometer is a type of potentioresistor. 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 a partial voltage output.

The function of the potentiometer is to adjust the voltage (including DC voltage and signal voltage) and the magnitude of the current.

The structural characteristics of the potentiometer - the resistive body of the potentiometer has two fixed ends, by manually adjusting the rotating shaft or the slide handle, changing the position of the moving contact on the resistive body, then changing the resistance value between the moving contact and any fixed end, thereby changing the magnitude of voltage and current.

Principle: When a voltage is added 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 voltage that has a certain relationship with the position of the moving contact can be obtained between the moving contact and the fixed contact.

Main functions: 1. Used as a voltage divider

A potentiometer is a continuously adjustable resistor that slides over the resistor body when the handle or slide of the potentiometer is adjusted. At this time, the output voltage of the potentiometer can be obtained at the output end of the potentiometer, which has a certain relationship with the applied voltage of the potentiometer and the angle or stroke of the movable arm.

2. Used as a rheostat:

When a potentiometer is used as a rheostat, it should be connected to two terminals, so that a smooth, continuously varying resistance value can be obtained within the travel range of the potentiometer.

3. Used as a current controller

When a potentiometer is used as a current controller, one of the selected current outputs must be a sliding contact exit.

Considerations for selecting a potentiometer:

1. When selecting potentiometers, it is necessary to pay attention to the size of the potentiometer, the length of the shaft handle and the style of the shaft end, as well as whether the position on the shaft needs to lock the switch, single or multi-link, single turn or multi-turn, etc., and the specific requirements for the structure.

2. The resistance change characteristics of the potentiometer should be selected according to the application. For example, an exponential potentiometer should be preferred for volume control, and a linear potentiometer can be used instead if there is no exponential potentiometer, but a logarithmic potentiometer should not be used, otherwise the volume phrase range will be reduced.

The working principle of the potentiometer: it is composed of a resistive body and a rotating or sliding system, that is, it moves on the resistive body by a moving contact to obtain a partial voltage output.

A potentiometer is actually a variable resistor.

According to the formula: u=i*r, the resistance changes, and so does the voltage. So the potentiometer adjusts the output voltage by changing the resistance.

A potentiometer is a type of variable resistance. It usually consists of a resistor and a rotary or sliding system, i.e. a moving contact moves over the resistor to obtain a partial voltage output. The function of the potentiometer - regulates the voltage (including DC voltage and signal voltage) and current.

Structural features of the potentiometer – The resistor of the potentiometer has two fixed ends. The magnitude of voltage and current is changed by manually adjusting the hinge or sliding handle to change the position of the moving contact on the resistor, and the resistance value between the moving contact and either fixed end. A potentiometer is an adjustable electronic component.

It consists 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 contacts on the resistor can be changed by rotating or sliding the system, and a voltage that has a certain relationship with the position of the moving contacts can be obtained between the moving contacts and the fixed contacts. It is mostly used as a voltage divider, and the potentiometer is a four-terminal element.

A potentiometer is basically a sliding rheostat. There are several styles, which are generally used to adjust the volume switch of the speaker and the power of the laser head. A potentiometer is an adjustable electronic component.

Variable resistors for voltage dividers. On the exposed resistor, one or two movable metal contacts are pressed. The contact position determines the resistance between the two ends of the resistor and the contacts.

It is made of material, carbon film, and solid core potentiometer; According to the relationship between the ratio of output to input voltage and the angle of rotation, it can be divided into linear potentiometers (linear relationship) and functional potentiometers (curve relationship). The main parameters are resistance, tolerance, and power rating. It is widely used for volume control in electronic devices, speakers and receivers.

The functions of the potentiometer are as follows:

1. Used as a voltage divider, the potentiometer is a continuously adjustable resistor, when adjusting the handle or slide handle of the potentiometer, the moving contact slides on the resistor body. At this time, the output voltage that is related to the applied voltage of the potentiometer and the angle or stroke of the movable arm can be obtained at the output end of the potentiometer;

2. When the potentiometer is used as a rheostat, it should be connected to the devices at both ends, so that within the travel range of the potentiometer, a smooth and continuously changing resistance value can be obtained;

3. When the potentiometer is used as a current controller, one of the selected current output terminals must be the sliding contact lead terminal.