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Aluminum Electrolytic Capacitors

Capacitors are devices that store electrical energy. Aluminum electrolytic capacitors, also known as electrolytic capacitors, are a type of capacitor that uses an electrolyte as one of its dielectrics. Aluminum electrolytic capacitors are manufactured with a wound construction and have a high capacity compared to other types of capacitors. The features of aluminum electrolytic capacitors make them ideal for a number of applications, from power supplies to signal processing.

EEU-FM1H821S application field and working principle

The EEU-FM1H821S is an aluminum electrolytic capacitor manufactured by Panasonic. It is designed for high frequency switching power supplies, voltage converters, and various power transmission and industrial applications. The capacitor has a voltage rating of 160 volts and a capacitance of 821 microfarads (µF).

The aluminum electrolytic capacitor works on the same principle as an electrochemical cell. An anode of aluminum is immersed in an electrolyte and a cathode of aluminum oxide is created as an insulating layer on the surface of the anode. When an electrical potential is applied across the two terminals, electrical current flows between the anode and cathode and charges the capacitor. The aluminum oxide layer acts as a dielectric, allowing the capacitor to store electrical energy.

The EEU-FM1H821S is designed for high voltage and high ripple current applications. This design is based on the use of a rectangular electromechanical element and a non-solid electrolyte. The component’s construction includes four core elements: a rectangular anode, a electrolyte, a multi-layer capacitor foil, and a safety valve. The anode is made from an aluminum foil that is wound in a rectangular shape. A non-solid electrolyte is used which not only increases the rated ripple current capacity but also gives the component a longer life span. The multi-layer capacitor foil is constructed by alternately laminating layers of aluminum alloy conductor foil and high-specification paper, and is designed to reduce losses. The safety valve is designed to prevent the internal pressure of the capacitor from increasing, as is common in some applications.

Conclusion

The EEU-FM1H821S aluminum electrolytic capacitor is a versatile component that can be used in a variety of applications. Its high voltage rating and high ripple current capacity make it ideal for many high-powered applications, from power supplies to power transmission. Its rectangular construction and non-solid electrolyte also provide a longer lifetime than some other types of capacitors.

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