How to measure capacitance with a multimeter, and measure the capacitance with a multimeter

a) Capacitors with capacitance above 5000pf are judged by the highest resistance level of the multimeter;Capacitors with capacitance below 5000pf should be measured with a multimeter with capacitance measurement function.

b) Adjust the multimeter gear to the highest resistance level, and place the meter pen on the two pins of the capacitor respectively (the meter pen should be in good contact with the capacitor pin to be measured, and the multimeter should be adjusted to zero).

c) When detecting electrolytic capacitance, the pointer multimeter detects that the black pen is connected to the positive pole and the red meter pen is connected to the positive pole.

d) After the multimeter pointer swings to the right, the pointer is restored, indicating that the capacitor is good, otherwise it is defective.

The digital multimeter has a capacitance level, which is no longer explained.

The pointer multimeter needs us to hit the gear to 1k ohms, repeatedly change the meter pen, and see the size of the pointer swing, the larger the capacity of the capacitive pointer swing amplitude, and vice versa.

Do not swing the pointer to zero, if it does not zero, it means that the capacitor has leaked.

The capacitance file of the multimeter can be measured, if there is no file, the resistance file may also be roughly measured, and the specific method can be checked for relevant information.

If we can detect the quality of the capacitance, there is no direct measurement of the capacitance on the universal meter, then we can also detect the resistance in the universal meter.

Tools Raw materials: pointer universal meter, capacitor.

1. First of all, we need to check the capacity of the capacitor, which shows 100uf;

2. Then adjust the resistance on the universal meter, x100 gear;

3. Because the capacitance is relatively small, it can pass through metal objects, and then short-circuit the capacitor to achieve the purpose of discharge

4. Then the universal meter is connected to the positive and negative levels of the capacitor;

5. After connecting the positive and negative poles, find the C(UF) scale in the display area of the universal meter

6. Then at the moment of access, check whether the pointer in the universal meter can reach the capacitance capacity, if it can reach, the capacitor capacity is normal.

The steps of how to measure capacitance with a digital multimeter are as follows:Tool: Digital multimeter.

1. Turn on the power of the multimeter by turning the multimeter knob counterclockwise through the vibrato.

2. Rotate the knob gear pointer to the gear with the measurement capacitance.

3. Keep pressing the [FUNC] function button until [NF] is displayed on the LCD screen.

4. Use the two nibs of the multimeter to separate the two pins of the capacitance to contact the capacitance to measure the capacitance.

DMM Resolution:Resolution is the way to judge the quality of a table's measurement results. Knowing the resolution of a table allows you to know if you can see small changes in the signal being measured.

For example, if the resolution of a digital multimeter in the 4V range is 1mV, then when measuring a 1V signal, you can see a small change of 1mV (1 1000 volts).

If you're going to measure a length of less than 1 4 inches (or 1 millimeter), you certainly won't use a ruler with the smallest unit of inches (or centimeters). If the temperature is , then you need a thermometer with a resolution. The number of digits and words are used to describe the resolution of the table.

Multi-purpose tables are categorized by the number of digits and words they can display.

1. The red probe of the multimeter is aimed at the negative pole of the quasi-capacitor, and the black probe is aimed at the positive electrode of the quasi-capacitor, and then look at the change of the pointer. If the multimeter points to the left of the needle, it means that the capacitance data is normal.

2. The size of the capacitance can also be estimated according to the amplitude of the pointer offset. If the pointer is shifted to the right, or to the "0" position, the capacitance is damaged and the measurement is inaccurate.

1. Direct detection with capacitor file.

Some DMMs have the function of measuring capacitance, and their ranges are divided into five steps: 2000P, 20N, 200N, 2, and 20. During measurement, the two pins of the discharged capacitor can be directly inserted into the CX jack on the meter board, and the display data can be read after selecting the appropriate range.

000p range, suitable for measuring capacitance less than 2000pf; 20N, suitable for measuring capacitance between 2000PF and 20NF; 200N, suitable for measuring capacitance between 20NF and 200NF; 2nd gear, suitable for measuring capacitance between 200 nF and 2 F; 20 steps, suitable for measuring capacitance between 2 F and 20 F.

2. Detect with resistance gear.

It has been proved in practice that the charging process of the capacitor can also be observed by using a digital multimeter, which is actually a discrete digital quantity that reflects the change of the charging voltage. Assuming that the measurement rate of the DMM is n times a second, then you can see n independent and sequentially increasing readings per second while observing the charging of the capacitor. Based on this display feature of the digital multimeter, it is possible to detect the quality of the capacitor and estimate the size of the capacitance.

The method of detecting capacitors using the resistance file of a digital multimeter is introduced below, which is of great practical value for meters that do not have a capacitor file set at the Takayoshi clan. This method is suitable for measuring large capacitors of a few thousand microfarads.

3. Friendly volt is detected with voltage gear.

Detecting a capacitor with a digital multimeter DC voltage level is actually an indirect measurement method that measures a small capacitance capacitor of 220 pf 1 F and accurately measures the leakage current of the capacitor.

1. Connect the two ends of the capacitor first and discharge the capacitor, which can make the multimeter safer when measuring.

2. Connect the multimeter, debug the Wang Pinyuan, and select the appropriate range, and measure it after confirming that it is correct.

3. Put the two electric pens of the multimeter at both ends of the electric capacitum, and then the multimeter will display the corresponding value, which can be read directly.