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Film Capacitors

The MKP1837322015 is a film capacitor, which is defined as a passive electronic device with two electrical terminals. Most commonly constructed from conducting plates with a dielectric material sandwiched in between, the capacitor is used to store electrical charge in a circuit. Film capacitors are constructed with an insulating film as the dielectric material between two conducting plates, which are usually made of aluminum, zinc, stainless steel, nickel or copper. The MKP1837322015 is a Metallized Polypropylene Film Capacitor, which features superior performance characteristics relative to an electrolytic capacitor.

Application Field

Film capacitors are available in a range of sizes and construction types, making them suitable for a wide range of applications, including cable signal filtering in communication systems, audio crossover networks, power supplies, and household appliance protection. Due to its temperature-resistant characteristics, a filer capacitor like the MKP1837322015 is also suitable to be used in in-circuit locations where other types of capacitors may be too weak or fail under extreme environmental conditions. The MKP1837322015 has particularly excellent surge withstanding properties and is commonly used for AC motor start applications, reducing the input power appearance necessary to start AC during the starting phase of the motor.

Working Principle

The dielectric film in the MKP1837322015 is composed of thin metalized aluminum and polypropylene films, which are wound and assembled to form a cylinder. The aluminum film gives the capacitor its metallic properties while the plastic-like polypropylene dielectric layer provides the insulation and dielectric strength. The dielectric characteristic of the MKP1837322015 gives it superior temperature and voltage characteristics, as well as a high degree of long-term stability. While the MKP1837322015 is capable of operating at high voltages, it is limited in terms of its capacitance range, allowing only a few μF to be achieved.

The MKP1837322015 capacitor is a valuable component in many electrical and electronic circuits as it serves as a buffer, allowing AC signals to pass through and blocking high-frequency DC signals. The capacitor works by allowing the current to be discharged at a rate that is proportional to the applied voltage. This is achieved by the capacitor managing the difference between the maximum and minimum voltages in a given cycle, and resisting changes in the voltage level. The use of metallized materials also prevents moisture from entering the MKP1837322015, thus improving overall life expectancy of the component.

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