用數(shù)字萬(wàn)用表測(cè)量電解電容好壞的方法有：用電容檔直接檢測(cè)、用電阻檔檢測(cè)和用電壓檔檢測(cè)。接下來(lái)小編給大家詳細(xì)介紹下測(cè)量的具體方法。

　　The methods of measuring electrolytic capacitance with digital multimeter include direct detection with capacitance, detection with resistance and detection with voltage. Next, I will give you a detailed introduction to the specific method of the side face.

　　1.用電容檔直接檢測(cè)

　　Use capacitor to detect directly

　　某些數(shù)字萬(wàn)用表具有測(cè)量電容的功能，其量程分為2000p、20n、200n、2μ和20μ五檔。測(cè)量時(shí)可將已放電的電容兩引腳直接插入表板上的Cx插孔，選取適當(dāng)?shù)牧砍毯缶涂勺x取顯示數(shù)據(jù)。

　　Some digital multimeters have the function of measuring capacitance. Their ranges are 2000p, 20n, 200N, 2 μ and 20 μ. When measuring, the two pins of the discharged capacitor can be directly inserted into the CX jack on the meter board. After selecting the appropriate range, the display data can be read.

　　2.用電阻檔檢測(cè)

　　Check with resistance

　　實(shí)踐證明，利用數(shù)字萬(wàn)用表也可觀(guān)察電容器的充電過(guò)程，這實(shí)際上是以離散的數(shù)字量反映充電電壓的變化情況。設(shè)數(shù)字萬(wàn)用表的測(cè)量速率為n次/秒，則在觀(guān)察電容器的充電過(guò)程中，每秒鐘即可看到n個(gè)彼此獨(dú)立且依次增大的讀數(shù)。根據(jù)數(shù)字萬(wàn)用表的這一顯示特點(diǎn)，可以檢測(cè)電容器的好壞和估測(cè)電容量的大小。

　　Practice has proved that the charging process of capacitor can also be observed by using digital multimeter, which actually reflects the change of charging voltage with discrete digital quantity. If the measuring rate of the digital multimeter is n times / s, n independent and increasing readings can be seen every second during the charging process of the capacitor. According to this display characteristic of digital multimeter, the quality of capacitor can be detected and the size of capacitance can be estimated.

　　3.用電壓檔檢測(cè)

　　Test with voltage level

　　用數(shù)字萬(wàn)用表直流電壓檔檢測(cè)電容器，實(shí)際上是一種間接測(cè)量法，此法可測(cè)量220pF～1μF的小容量電容器，并且能精確測(cè)出電容器漏電流的大小。

　　In fact, it is an indirect measurement method to detect capacitors by DC voltage level of digital multimeter. This method can measure 220pF ~ 1 μ f small capacity capacitor and accurately measure the leakage current of capacitor.

　　用電容檔測(cè)量電容時(shí)，若顯示的讀數(shù)遠(yuǎn)小于標(biāo)稱(chēng)值，說(shuō)明該電解電容已損壞。對(duì)于鋁電解電容來(lái)說(shuō)，若顯示的讀數(shù)遠(yuǎn)小于標(biāo)稱(chēng)值，說(shuō)明電容內(nèi)部電解質(zhì)已干涸，不能使用了。若測(cè)量擊穿損壞的電容，則萬(wàn)用表顯示的讀數(shù)為“1”。對(duì)于漏電大的電容，用電容檔測(cè)量時(shí)，顯示的讀數(shù)會(huì)顯著高于其標(biāo)稱(chēng)值。

　　When measuring the capacitance with a capacitor, if the displayed reading is far less than the nominal value, it indicates that the capacitor has been damaged. For aluminum electrolytic capacitor, if the displayed reading is far less than the nominal value, it means that the electrolyte inside the capacitor has dried up and can not be used. If the capacitance damaged by breakdown is measured, the reading of the multimeter is "1". For the capacitance with large leakage, the display reading will be significantly higher than its nominal value.