Adjustable resistance, also known as variable resistance, is a classification of resistance. The magnitude of resistance can be adjusted artificially, but for some beginners, the meaning of 102 adjustable resistance and the measurement methods of adjustment may not be understood. Following is how to adjust 102 adjustable resistance and what is the measurement method.

When it comes to adjustable potentiometer, its alias is also called potentiometer, but people say different things. At the same time, some people think that the identification methods of adjustable power resistor and some parameters of potentiometer are different. In fact, we can tell you that the identification methods of adjustable potentiometer and potentiometer are the same, because they are all the same products, and their resistance identification methods are also the same. Like that.

The specifications of adjustable power resistor are usually directly marked. The contents of the general marks are the categories, models, nominal resistance and rated power of potentiometers. That is to say, letters and Arabic numerals are directly labeled on potentiometers. Sometimes potentiometers also label the output characteristics of potentiometers (D for logarithm, Z for exponent, X for linearity).

What is 102 adjustable power resistor

The label 102 is 10 times square, i. e. 1000 ohms. The label method of the nominal value on the resistor is expressed by three digits. Numbers are from left to right, the first and second places are valid values, and the third place is index, that is, the number of zeros, in units of Europe. ("102" means 1000Ω)

Measurement of 102 adjustable variable resistor

The upper mark of adjustable resistance is 102, which means adjustable resistance 1MΩ.

First step: First, the adjustable variable resistor will be removed to measure, measuring two feet on both sides. The resistance value should be 1MΩ, or 1000KΩ.

The second step: Then the multimeter pen is connected to the middle pin and any pin separately. Rotate it with a screwdriver. The resistance value should change slowly and continuously, either from small to large or from large to small.

Step 3: Measure the resistance of the middle pin and the other foot again, and the resistance changes exactly opposite to the previous measurement.

102 adjustable resistance adjustment method

1. A digital adjustable resistance's adjustment method. Digital adjustable resistance includes parallel controlled resistor series and adjustable resistor series. By adjusting the number of the first resistor in parallel, the controlled resistor series can get the approximate value of the required resistance value. The controlled resistor series can be adjusted to adjust the resistance value of the digital adjustable resistor by adjusting the number of the second resistor in series to get the required resistance value.

2. Parallel connection of multiple first resistors to obtain the approximate value of the required resistance; series connection of multiple second resistors to adjust the resistance value of the digital adjustable resistance; parallel connection of multiple first resistors in parallel with multiple second resistors in series to obtain the required resistance value.

The Role of 102 adjustable variable resistor

The resistance elements in adjustable resistors should ensure the stability and reliability of electrical and mechanical components within the working temperature range. The connection of resistance elements in resistors should be bolted or welded. The low melting point alloy should not be used as the connection. The adverse effect of resistance operating temperature should be taken into account when the fastener is bolted. It is only necessary to set the regulated range of the resistor. Generally, the regulated range of 102 adjustable resistors should not exceed 1000KΩ.