Film capacitors in electric toothbrushes

Is dental health important? For some people, dental health is important, while others think it is not important. For me, teeth are part of the body, and dental health is very important and cannot be ignored. In daily life, we should clean our teeth and protect their health. After all, people eat with their teeth, and if the teeth are not healthy, the food will not taste good.

In ancient times, there were no special toothbrushing tools. How did people clean their teeth? They used salt water to rinse their mouths and wiped their teeth with their fingers. However, rinsing with salt water and brushing with fingers did not clean their teeth well, so people thought of other ways to clean their teeth. Later, they found that brushing teeth with willow branches was not only more convenient than brushing with fingers, but also more clean. So they started to use willow branches to brush their teeth, and later they invented toothbrushes made of pig hair.

With the development of the times, people began to brush their teeth with toothbrushes made of nylon bristles, but ordinary toothbrushes were always not clean enough, so people invented electric toothbrushes.

Electric toothbrushes are much more convenient than ordinary toothbrushes, and they brush teeth more cleanly than ordinary toothbrushes. The frequency of manual brushing is about 100 to 200 times per minute, which is still not clean enough. The frequency of electric toothbrushes is about 30,000 to 40,000 times per minute, which is a hundred times faster than manual brushing and brushes teeth more cleanly than ordinary toothbrushes.

Electric toothbrushes are made up of different electronic components, including film capacitors.

Film capacitors use polyethylene, polypropylene and other plastic films as dielectrics, metal foil, metal vapor-silver layer and metalized film as electrodes, and tinned copper-clad steel wire as pins. After overlapping at both ends, they are wound into a cylindrical structure. Film capacitors are also classified differently depending on the plastic film dielectric. The film capacitor in the electric toothbrush is a CBB capacitor.

CBB capacitors among film capacitors have the characteristics of small size, small space occupation, high insulation impedance, excellent frequency characteristics, good stability, and high frequency resistance, which are suitable for high-frequency circuits, pulse circuits, and wireless charging products.

There are many types of CBB capacitors among film capacitors and they are widely used. When choosing a film capacitor, you should choose the appropriate film capacitor according to the application scenario and product.