MAL213631829E3

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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors, commonly known as aluminum capacitors, are widely used in electronic products. They are based on the physical effect of the Coulomb countermeasure.

MAL213631829E3 Application Field

The Aluminum Electrolytic Capacitor MAL213631829E3 is designed and manufactured for the application fields such as pulse rectifying circuit, charging and discharging circuit, DC-DC boosting, and for the high frequency and low ripple filtering of high frequency switching power supply.

MAL213631829E3 Working Principle

The working principle of the MAL213631829E3 Aluminum Electrolytic Capacitor is based on the Coulomb countermeasure physical effect. When the voltage is applied to the two electrodes (positive and negative) of the capacitor, an electric field is generated in the capacitor and electrons inside the electrolyte start to move. The electrolyte (non-conductive liquid material) behaves like an insulator and the electrode (generally made of Aluminum foil) acts as a conductor and stores electric charge. The electric charge collected in the capacitor forms an electric field, which is the same effect which is obtained when two electrical charges of equal magnitude are in the opposite direction. This means that when the voltage across the capacitor is maintained above a certain level, a capacitance is formed. This capacitance is the main measure of the capacitive performance for an aluminum electrolytic capacitor.

Applications

Aluminum electrolytic capacitors are widely used in different applications ranging from low to high power levels. They can be the main components of many electronic designs where they serve as an electronic filter or as an energy storage device for distributed power system. Examples include power factor correction, power conditioning, noise filtering, motor speed control, and power supply efficiency. In addition, aluminum capacitors are also used in the manufacturing of specialized products such as chargers, DC-DC converters, motor control systems, wound transformers, and electrical switches.

Advantages

Aluminum electrolytic capacitors offer several advantages when compared to other types of capacitors. The main benefits include high capacitance per unit volume, high ripple current ratings, and excellent resistance to thermal and mechanical shock. Additionally, they offer a long short-term performance which keeps the capacitance similar throughout their long life span. Furthermore, aluminum capacitors are relatively inexpensive when compared to other types of capacitors.

Disadvantages

One of the main disadvantages of aluminum electrolytic capacitors is their limited operating temperatures and the high self-discharge rate. Furthermore, they have a high leakage current which means they need to be recharged or replaced more often than other types of capacitors. Additionally, aluminum electrolytic capacitors are also very fragile and require careful handling which may limit their application.

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