Capacitors are a very common electronic component. Both ordinary household appliances and audio lamp holders cannot do without the existence of capacitor
s. Especially in the near hot weather, the air conditioner in many people's homes will fail. A large part of the reason is that the capacitor is broken. Up. So how do we judge whether a capacitor is good or bad? Let's take a look. It is not difficult to judge the quality of the capacitor. Basically, we should first look at the capacitor shell to see if the capacitor is swollen or leaking, whether the bushing is broken, and whether flashover sparks will occur, but we found that the capacitor appears above. In either case, the capacitor is damaged and should be replaced in time. If we cannot accurately judge the quality of the capacitor in terms of appearance, we have to use a professional analog multimeter or digital meter to test it. If you use an analog multimeter, we should connect the test leads to the two poles of the capacitor respectively. If the pointer of the multimeter swings and slowly returns to or near the zero position, it means that the capacitor is good. If the pointer does not move after connecting, the resistance displayed If the value is small, it is definitely broken. If you use a digital meter to test a capacitor, we can judge based on the reading of the capacitor directly. If it is much different from the marked value or has no capacity, it can be judged that the capacitor is damaged. More articles recommended: What factors can cause the failure of CBB capacitors?
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