The relationship between film capacitor voltage and frequency

The relationship between film capacitor voltage and frequency

we all know that film capacitor have the function of the hand over resistance straight, because of a direct current is a one-way, when film capacitor in the circuit as dc, film capacitor charging will always single direction, the film capacitor capacity is full. After a full charge capacitor is so open circuit state. And ac current direction in constant change, can discharge, can charge again. Film capacitance of the circuit has been there will be an electric current passes through, also is equivalent to the pathway.

when the frequency of the alternating current is very low, through the film capacitor current is low. When the frequency of the alternating current increasing, through the film capacitor current also will continue to increase. When the current through the film capacitor reaches the rated current, can no longer continue to increase the frequency of the alternating current (ac), because continue to increase will result in the dielectric loss, thus affecting the service life of the film capacitor, therefore in the use of thin film container should pay special attention to the frequency of the alternating current (ac) can allow range, prevent the life of the capacitor is reduced, increase the unnecessary loss and artificial maintenance costs.

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