SMiLer is the strong brand enterprise of metallized film capacitors integrating R&D, production and sales.The main products: motor capacitor,capacitor manufacturer,fan capacitor.

Film capacitor function and working principle

by:SMiLer     2021-01-19
Film capacitor is also called plastic film capacitors ( PlasTIc Film Capacitor) Refers to ( The electrician class) Plastic film as the dielectric capacitor. Compared with ceramic and electrolytic capacitor has the advantages of good product performance, high reliability, but capacity/volume small, the price is high. Film capacitor role function and all the role of the capacitors, film capacitor is ACTS as hold a charge. But compared with other general capacitor film capacitor because of has many excellent properties, so it is a kind of excellent performance of capacitors. Its main features are as follows: no polarity, high insulation resistance, excellent frequency characteristic ( Wide frequency response) Small and medium loss. The metallized film of this type of capacitor, which has a so-called self-healing function ( 自我疗愈作用) , that is, assuming that small part of the electrode for electrical industry qualitative fragile and cause short circuit, cause a short-circuit parts around the electrode metal, due to the capacitor with the electrostatic energy or short-circuit current, caused more the fusing and evaporation and restore the insulation of large area, capacitor again returned to the role of the capacitor. That is to say, can instantly healing. Film capacitor is generally used in high frequency filter, high-frequency bypass, first or second order filter circuit. Widely used in electronics, electrical appliances, communications, electric power, electric railways, hybrid cars, wind power, solar power and other industries. Film capacitor working principle of film capacitor, working principle and general capacitor is by storing electrical energy storage charge on the electrodes, usually used together with the inductor form LC oscillation circuit, working principle of the capacitor is charge in electric field force and movement, as a medium between conductors, has hindered the charge mobile makes the accumulated charge on the conductor and cause the accumulation of charge storage. The development direction of development of film capacitor film capacitor is low cost, miniaturization, chip, ultra-high voltage, high power, high precision, high reliability. As the new material, new technology application and development of film capacitor will have significant change. With the development of the whole machine equipment, the application of film capacitor will bring opportunities and challenges.
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