860020472001

Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors are electrical components used to store electric energy in the form of static electric charge. They are composed of two metal plates, an anode and a cathode, separated by an electrolytic material, typically a paper, ceramic, or polyester dielectric, which acts as an insulator. Aluminum electrolytic capacitors are used in a wide variety of industries and applications, including audio equipment, automotive power supplies, motor drives, and servers, to name a few.

The 860020472001 application field and working principle of aluminum electrolytic capacitors can be divided into two types. The first type of aluminum electrolytic capacitor is the Polarized Polarized type, which contains two metal plates, an anode and a cathode, separated by an insulating material. The polarizing material is typically an aluminum oxide coating applied to the inside of the anode and/or the outside of the cathode. This material provides an electrical bias across the plates, known as the “polarization voltage”. To operate properly, the voltage applied across the plates must exceed the polarization voltage.

The second type of aluminum electrolytic capacitor is the Non-Polarized type, which consists of two metal plates, an anode and a cathode, separated by an insulating material. The polarization voltage does not exist in this type of capacitors, as the plates are connected in parallel rather than in series, resulting in a symmetric charge across the plates. Due to this symmetry, the voltage applied across the plates need not exceed the polarization voltage since it is already supplied internally.

The working principle of aluminum electrolytic capacitors revolves around the buildup of static electric charge on the foil-like metal plates. When a voltage is applied across the plates, an electric field is generated which forces the electrons on the anode plate to move toward the cathode plate. As they move they pick up electric charge, creating an electric field which builds up a static electric charge on the plates. This charge is then stored in the capacitor. The amount of charge stored is determined by the size of the plates, the type of dielectric material between them, and the amount of voltage applied across them.

Aluminum electrolytic capacitors are used in many applications and are available in a wide range of sizes, shapes and capacitance values. They are widely used in high current applications and are particularly suitable for smoothing the output of switching power supplies and DC power supplies, as well as for filtering high frequencies. They are also commonly used in audio equipment, automotive power supplies and motor drives.

The 860020472001 application field and working principle of aluminum electrolytic capacitors is essential to understanding their use in modern electronics. By understanding the basic components and mechanisms behind these capacitors, and their various available sizes and types, engineers and technicians can safely and efficiently use them in a variety of applications.