The relationship between AC voltage and frequency of film capacitors|Focus on mid-to-high-end brand capacitor manufacturers

We all know that the film capacitor has the function of passing AC resistance, because the direct current is unidirectional. When the circuit where the film capacitor is located is direct current, the film capacitor will always be charged in one direction, which will fill the capacity of the film capacitor. The capacitor after being fully charged is equivalent to an open circuit state. The alternating current can be both discharged and charged because the direction of the current is constantly changing. The circuit in which the film capacitor is located always has current flowing through it, which is equivalent to a path. When the frequency of alternating current is very low, the current through the film capacitor is also very low. When the frequency of alternating current continues to increase, the current through the film capacitor will also continue to increase. When the current through the film capacitor reaches the rated current, the frequency of the alternating current can not be increased, because the continued increase will cause the loss of the dielectric, which will affect the service life of the film capacitor, so pay special attention to the alternating current when using the film container The permissible frequency range prevents the life of the capacitor from being reduced, and increases unnecessary losses and manual maintenance costs.

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