九九热精品在线视频丨www久久久久久丨91视频中文字幕丨日本妇人成熟免费中文字幕丨中文字幕人妻a片免费看丨99无码精品二区在线视频丨日本狂喷奶水在线播放212丨亚洲成av 人片在线观看无码丨偷偷操不一样的久久丨4438xx亚洲最大五色丁香软件丨国产福利高清在线视频丨中文字日产幕乱码免费丨日韩国产高清一区二区丨精品国产一区二区三区四区在线看丨后进式无遮挡啪啪摇乳动态图丨人妻丰满熟妇ⅴ无码区a片丨五月天狠狠操丨欧美疯狂性受xxxxx另类丨欧美少妇xx丨二区视频在线丨国产成人无码a区在线视频无码dvd丨久久成人国产精品丨婷婷亚洲五月丨免费一级大片丨婷婷综合另类小说色区

How to measureAluminum Electrolytic capacitorThe quality of the equipment

Method 1:Use a pointer multimeter to short-circuit the two pins of the capacitor for discharge, and connect the black probe of the multimeterElectrolytic capacitorThe positive pole of the. The red probe is connected to the negative electrode (for a pointer type multimeter, when measuring with a digital multimeter, the probes are mutually adjustable). Normally, the probe should first swing in the direction of low resistance, and then gradually return to infinity. The larger the swing amplitude of the watch needle or the slower the return speed, the greater the capacity of the capacitor. Conversely, the smaller the capacity of the capacitor. If the watch needle does not change at a certain point in the middle, it indicates that the capacitor is leaking electricity. If the resistance indication value is small or zero, it indicates that the capacitor has broken through a short circuit. Since the battery voltage used in a multimeter is generally low, it is more accurate to measure low voltage capacitors. However, when the voltage resistance of the capacitor is high, Although the measurement is normal during operation, there is a possibility of leakage or breakdown when high voltage is added.

Method 2:Measure the capacitance with a digital multimeter and set the gear to the capacitance (select the gear based on the capacitance value you measured). During the test, use two probes to overlap the two pins of the capacitance. The meter has a certain value, and then return to the infinity position. Swap the probes and try again. This time, the displayed data size is slightly off, and then return to infinity, indicating that the capacitance is good. If it cannot return to infinity, it indicates leakage, and if infinity is displayed, it indicates that the capacitance is good, Indicates an internal open circuit or lack of capacity.