The induction film capacitor and electrolytic capacitor are the same in principle, but the different aspects are: different structure, different medium, different operating environment, different functions and uses.
First, the function is different.
The function is the requirement of application, and the demand is the requirement of application. If the power supply part of the TV set with metal oxide capacitors to do filtering, and to achieve the capacitor capacity and withstand voltage required for filtering. I am afraid that only a power supply can be installed in the housing. So as a filter can only use polarized capacitors, polarized capacitors are irreversible.
Second, the medium is not the same.
What is the medium? To put it bluntly, it is the material between the two polar plates of the capacitor. Most of the polarized capacitors use electrolyte as dielectric material, and generally the capacitor with the same volume has a large capacity. In addition, the capacity of the same volume of polarized capacitor is also different with different electrolyte materials and processes. There is also a close relationship between voltage resistance and dielectric material. There are many dielectric materials for non-polar capacitors, mostly metal oxide film and polyester are used. Because of the reversible or irreversible function of the dielectric, the application environment of polarized and non-polarized electrolytic capacitors is determined.
Cucab film capacitor

Cucab film capacitor

Third, the principle is the same
1. The voltage on the pole plate (here the electric potential of charge buildup is called voltage) cannot be changed suddenly.
The difference lies in the difference of medium, function, capacity and structure, which leads to different application environment and usage. In turn, according to the practical needs of production, people have experimented and made capacitors of various functions to satisfy the normal work of various electrical appliances and new equipment. With the development of science and technology and the exploration of new materials, better quality and diversified capacitors will continue to emerge.
3. Both store charge and release charge.
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