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Home » News » industry information » The frequency characteristics of the film capacitor are compared with the electrolytic capacitor

The frequency characteristics of the film capacitor are compared with the electrolytic capacitor

Views: 0     Author: Site Editor     Publish Time: 2019-05-15      Origin: Site

Film capacitors and electrolytic capacitors are not unfamiliar to everyone, and often see that the small partners will propose which of the two capacitors will be better. The advantage of the capacitor is that it is displayed on its own strengths, and the effect is better! Then the frequency characteristics of the film capacitor will be better than the electrolytic capacitor, and follow the progress of the small series to explore the problem of this article!

 

The amount of any capacitor that is consumed by the electric field force. Usually, the amount of heat consumed by the capacitor under the action of the electric field is called the loss of the capacitor, which is expressed by the active power. However, the active power does not account for the quality of the capacitor loss characteristics, so we use the loss tangent to reliably represent the loss characteristics of the capacitor. High frequency loss is an important indicator of film capacitors, which directly affects the reliability of the whole machine. Currently, many electronic instruments use a high switching frequency of about 10KHZ. This is to require the product to have good performance at high frequencies, but it is difficult to achieve for electrolytic capacitors.

 

The variation of the capacitance and frequency of the film capacitor and electrolytic capacitor in the greenhouse was measured by experiments. The capacity of electrolytic capacitors decreases with increasing frequency, while film capacitors remain essentially unchanged. At the same time, the dielectric loss tangent of the two capacitors in the greenhouse is measured as a function of frequency. It is concluded that the loss of the electrolytic capacitor increases sharply with increasing frequency, but the capacity of the film capacitor has only a small change. It can be seen in the comparison process that the film capacitor has a wide operating frequency range and low high frequency loss, and has good frequency characteristics.

 

After reading the contents of this article, I believe that everyone has a clear understanding of the frequency characteristics of the film capacitor. If you have technical questions, please contact us and try to solve the problem for you.


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