Shenmao Capacitors specialized in aluminum electrolytic capacitors from 1970

Why does the filter capacitor heat up? |Focus on mid-to-high-end brand capacitor manufacturers

by:Shenmao     2021-06-27
We all know that a filter capacitor is a container for storing electric charges. The ideal internal resistance of a capacitor should be infinite. However, due to technology and various practical conditions, the insulation of the filter capacitor will slowly decrease and leakage will occur, which will generate current and generate heat. The greater the leakage, the greater the heat generated, and an explosion will occur after reaching a certain limit. Therefore, once the capacitor is found to be heated, it should be replaced immediately to avoid greater failure. The smaller the capacitor, the lower the heat generation, but the filter capacitors are often large in size, so the situation after heating will naturally become more serious. Regular manufacturers will give the rated working voltage and corresponding working environment. Once the voltage is too high and the ripple current exceeds the rated value, the filter capacitor will naturally overheat, and the higher temperature will vaporize the electrolyte inside the capacitor. An increase in internal pressure will cause the capacitor to bulge and burst. Therefore, we must follow the instructions when using filter capacitors.
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