Bourns potentiometer is a kind of adjustable resistance and one of the most common electronic components in electronic circuits. The bourns potentiometer has three outlets, two of which are fixed terminals and the other is the central tap. When the Bourns potentiometer is rotated or conditioned, the resistance between the central tap and the fixed end changes accordingly.

Performance index and working principle of bourns potentiometer

Parameters of bourns potentiometer
The Bourns potentiometer has relatively few parameters and is relatively easy to identify. The parameters include nominal resistance, allowable tendency, rated power and noise. Detailed and detailed are as follows:

1. Noise: This is an important parameter to weigh the performance of Bourns potentiometer. There are three kinds of noise in Bourns potentiometer
1) dynamic noise. Dynamic noise is the special noise of Bourns potentiometer and the main noise. There are many reasons for the dynamic noise, mainly due to the uneven structure of the resistor, and the contact sound between the contacts of the movable plate and the resistor, the latter becomes larger and larger with the increase of the use time of the Bourns potentiometer.
2) Current noise: thermal noise and current noise are the noise between two fixed plates when the contact of moving plate is not sliding, also known as static noise, static noise is the fixed noise of bourns 3296 potentiometer, the sound is very small.
3) Thermal noise

2. Allowable tendency: The allowable tendency of non-wire-wound bourns potentiometers is divided into three grades: the first grade is positive or negative 5%, the second grade is positive or negative 10%, and the third grade is positive or negative 20. Two our regular level is third plus or minus 20%.

3. Nominal Resistance: Nominal Resistance refers to the resistance between the pins of two fixed plates. Nominal series of Bourns potentiometers are divided into two types: wire-wound and non-wire-wound Bourns potentiometers. Nominal series of non-wire-wound Bourns potentiometers are 1.0, 1.5, 2.2, 3.2, 4.7 and 6.8.

4. Rated power: The maximum allowable power dissipation of a bourns potentiometer in an AC or DC circuit when the atmosphere is 650-800mmHg elegant and the temperature is small in a regular environment. The rated power series that is wound around the Bourns potentiometer is 0.05W, 0.1W, 0.25W, 0.5W, 1W, 2W, 3W and so on.

Working principle of Bourns potentiometer

When a voltage is applied between two fixed contacts of a resistor, the position of the contacts on the resistor body is changed by rotating or sliding system, and a voltage which is related to the position of the moving contacts can be obtained between the moving contacts and the fixed contacts. It is mostly used as voltage divider, which is the bourns 3296 potentiometer is a four terminal element.

Bourns potentiometer is basically a sliding rheostat, there are several styles, commonly used in speaker volume switches and laser head power conditioning Bourns potentiometer is an adjustable electronic component. It consists of a resistor body and a rotating or sliding system. When a voltage is applied between two fixed contacts of a resistor, the position of the contacts on the resistor body is changed by rotating or sliding system, and a voltage which is related to the position of the moving contacts can be obtained between the moving contacts and the fixed contacts.

The performance index and working principle of bourns 3296 potentiometer are introduced above. You can get a general understanding of Bourns potentiometer through the above. Bourns potentiometer can be selected by the performance indicators of Bourns potentiometer, and the role of Bourns potentiometer in the whole electronic product can be understood according to the working principle of Bourns potentiometer.