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Film Capacitors

BFC 237364474 Application Field and Working Principle

Film capacitors, also known as polyester capacitors or polyester film capacitors, are capacitors that use an insulating film as their dielectric medium. Among the dielectric materials, polyester is one of the most commonly used materials. BFC 237364474 are film capacitors with high performance, mainly used in AC single phase induction motors, light ballast, power inverters, home appliances and power supplies.

In addition to self-healing properties, the unique design of BFC 237364474 provides benefits such as high insulation resistance, long life, very low temperature coefficient, low dissipation factor, low leakage current, high tracking voltage, low ESR and tight tolerance parameters. As a result, these capacitors are especially suitable for applications requiring very precise parameters, such as filters, drivers, converters and regulators, where several identical capacitors are connected in parallel to reduce the effective ESR.

The working principle of BFC 237364474 is similar to that of other dielectric capacitors. A pair of metal plates, usually aluminum, is applied to both sides of the inert polyester film strategically placed across the top and bottom of the sides. The upper and lower metallic plates are typically connected to the electrical network within the device via their respective leads.

When connected to DC power supply, a charge is stored up on both sides of the film. The static electric field that exists between the plates acts as an object separating each other. The attractive force varies inversely with the distance between the plates, which means the force of attraction increases as long as the distance between the plates decreases.

The charge stored on a capacitor\'s plates is the electrical energy stored, giving the whole object the capacity to store electrical charge. As a result, capacitors are essential electronic components that can store energy in a form of an electric field between two plates. The unit of electrical energy stored is known as Farad (F).

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