Adjustable resistance effect

Category： Company News

Time：2023-07-26

adjustable resistor is a resistor whose resistance value can be adjusted. For occasions where the circuit current needs to be adjusted or the circuit resistance needs to be changed, the adjustable resistor can change the characteristics of the signal generator, dim the lights, start the motor or control its speed, mainly by changing its own resistance and controlling the series circuit The current in the circuit can protect some electrical components.

adjustable resistors are usually used in circuits that need to be adjusted frequently, and play the role of adjusting voltage, adjusting current or signal control, etc. Its main parameters are basically the same as those of fixed resistors. According to different uses, the resistance material of adjustable resistors can be metal wire, metal sheet, carbon film or conductive liquid. For the general size of the current, the commonly used metal type adjustable resistor, in the case of a small current, the use of carbon film type adjustable resistor; when the current is large, the electrolytic type is more applicable. The electrodes of this adjustable resistor are immersed in a conductive liquid.

potentiometer is a special form of adjustable resistor, which balances unknown voltage or unknown potential with each other, thus measuring the size of unknown voltage or unknown potential difference. The more commonly used potentiometer is just a resistor with two fixed connectors, the third connector is connected to an adjustable brush, and another purpose of potentiometer is to use it as audio control in audio equipment.

Adjustable resistance can play the role of resistance when used in electronic circuits. The difference between it and general resistance is that its resistance value can be continuously changed within a certain range. In some occasions where the resistance value is required to change but not often, adjustable resistance can be used. Due to its structure and use, the failure rate of adjustable resistance is significantly higher than that of ordinary resistance. Adjustable resistance is usually used in small signal circuits, and signal adjustable resistance is also used in a few occasions such as tube amplifiers.

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RELATED INFORMATION

Structural characteristics of adjustable resistors and instructions for selection

The shape of the adjustable resistor is usually a thin and long cylindrical shape with a length of about 1cm and a diameter of about 0.3cm. The size of the adjustable resistor is also different. The larger the volume, the greater the power of the adjustable resistor. The volume of the metal film resistor is smaller than that of the carbon film adjustable resistor at the same power.

2023-07-26

How to calculate the resistance of the potentiometer?

When adjusting the rotation of the double potentiometer, the operating force should not be too hard to rotate. Otherwise, the rotating shaft inside the potentiometer will be easier to loosen, resulting in the adjustment of the potentiometer, which will easily cause either a small adjustment or a large adjustment at once.

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Selection and Substitute of Potentiometer

Potentiometer is an electronic component that we often use in our life. So what do you know about the selection and substitution of potentiometers? In general, the potentiometer is damaged, we need to find exactly the same model for substitution, if the model is not exactly the same for the time being, the selected potentiometer should be consistent with the damaged size, the resistance adjustment range is equal to or slightly less than, to ensure that the circuit can withstand the resistance change range after substitution.

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Application case sharing of potentiometer series products in the field of post and telecommunications

Potentiometer is a common electronic component, which has a wide range of applications in the field of post and telecommunications. This article will share some application cases of potentiometer series products in the field of post and telecommunications, focusing on high-voltage resistors. By studying these practical application cases, we can deeply understand the importance and role of potentiometer in the field of post and telecommunications.

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Application and Advantage of High Voltage Resistor in Instrumentation

High voltage resistor is a kind of electronic component, which is often used in various instruments and meters. It has many advantages that make it one of the choices for electronics engineers and manufacturers. This article will introduce the application of high voltage resistance in instrumentation and its advantages.

2023-07-26

Adjustable resistance effect

The adjustable resistor is a resistor whose resistance value can be adjusted. For occasions where the circuit current needs to be adjusted or the circuit resistance needs to be changed, the adjustable resistor can change the characteristics of the signal generator, dim the lights, start the motor or control its speed, mainly by changing its own resistance and controlling the series circuit The current in the circuit can protect some electrical components.

2023-07-26

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