BFC2370FI123

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Film Capacitors

BFC2370FI123 is a type of film capacitor, which uses film as the insulation medium. The film capacitor has excellent temperature stability, corrosion resistance and low cost, making it well-suited for use in a wide range of electronic circuits and applications.

Application Field

Film capacitors are bidirectional, meaning they can be used in both AC and DC circuits. This makes film capacitors suitable for a variety of applications, including power electronics, low-frequency switching circuits, and high-voltage and high-temperature circuits. The capacitor is also commonly used in audio filters, power suppression circuits and power factor correction circuits, as well as communication systems, computer networks, and industrial automation.

Working Principle

Film capacitors are constructed from two plates that are separated by an insulation material. These plates act as storage for electrical charges. By passing an electrical current through the capacitor, a charge develops between the two plates. The amount of charge stored in the capacitor is determined by the electric field applied to it.

The capacitor creates an impedance to current flow and acts to reduce the amplitude of AC current. Film capacitors can be found in the power supplies of many electronic devices. The principal behind this is that a capacitor stores energy in the form of an electrostatic field, reduces the electric current draw by acting as a current limiter, and acts to reduce output ripple in a power supply.

These properties of film capacitors make them just as invaluable in audio equipment as they are in power electronics. Their low ESR eliminates capacitive reactance and cancels impedance, producing a uniform impedance to ground. This allows for the transfer of low-frequency signals, such as the bass output in a guitar amp.

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