Q: Dingfeng Capacitor -- Frequently encountered problems when using film capacitors

A: 1. Improper current selection in the range

If the required current value is greater than the allowable current value of the film capacitor, a film capacitor heating effect is formed.Long-term high-temperature operation will cause the life of the film capacitor to drop greatly, and it may explode and even burn.

    2. Improper wire connection

Improper wire connection is generally used in the application of multiple parallel circuits for film capacitors. Because of the wiring method,the spacing of the traces, etc., each of the parallel film capacitors is shunted in the electronic circuit. It is represented by multiple parallel film capacitors, each with different temperature rises. The temperature rise of the film capacitor in some positions is too high, causing an accident of destruction. Therefore, it is necessary to properly wire and connect the parallel operation of the film capacitors, and to achieve averaging as much as possible to improve the service life of the film capacitors.

    3. Exceeding the specified range voltage

Developers should make preliminary plans based on the configured power, input voltage, circuit topology, load permeability, and electronic circuit Q factor. After the prototype begins to reach the condition, the parameters of the film capacitors on both sides of the film capacitor, series resonance and other parameters are analyzed during the output power to further determine whether the model and parameters of the film capacitor used are accurate.

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