四虎影成人精品a片-香蕉视频免费看-青青草青娱乐-国产喷水视频-中文字幕av网-一亲二脱三插-日韩中文字幕精品-超碰操-国产三级一区二区-亚洲天堂手机在线-亚洲国产成人综合-一区二区播放-国产精品最新-成人一卡二卡-国产淫视-都市激情一区-黄色一级图片-麻豆一级视频-国产成人免费看一级大黄-黄色a在线-男女日日-亚洲av综合色区无码一区-爱色av网站-亚洲网站在线看-国产一区资源

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.