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Capacity and voltage range from low to high, widely distributed. Can be applied to lighting and consumer electronics.
Capacity and voltage range from low to high, widely distributed. Can be applied to lighting and consumer electronics.
Capacity and voltage range from low to high, widely distributed. Can be applied to lighting and consumer electronics.
Capacity and voltage range from low to high, widely distributed. Can be applied to lighting and consumer electronics.
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Film Capacitor Introduction
Release time:
2024-01-05 17:24
Source:
Film capacitors, plastic film capacitors, film dielectric capacitors or polymer film capacitors, collectively referred to as film capacitors and power film capacitors, is a kind of insulating plastic film as the dielectric, sometimes with paper as the electrode carrier of the capacitor. According to the required dielectric strength, the dielectric film is drawn to an extremely thin thickness by a special process, and then equipped with electrodes. The electrodes of the film capacitor can be metallized aluminum or zinc, applied directly to the surface of the plastic film, or a separate metal foil. Two of these conductive layers are wound into cylindrical windings, typically flattened to reduce mounting space requirements on a printed circuit board, or laminated as a plurality of individual layers stacked together to form the capacitor body. Film capacitors, along with ceramic capacitors and electrolytic capacitors, are the most common type of capacitor in electronic devices and are used in many AC/DC microelectronics and electronic circuits. A related component type is a power (film) capacitor. Although the materials and construction techniques for high-power film capacitors are very similar to those used for ordinary film capacitors, for historical reasons, capacitors of high to very high power ratings for power systems and electrical devices are usually classified separately. As modern electronic devices gain the ability to handle power levels previously exclusive to power components, the distinction between electronics and power ratings becomes less pronounced. In the past, the boundary between these two series was about 200 volt-amperes of reactive power, but modern power electronics can handle ever-increasing power levels.
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