UVR1A220MDD

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Aluminum electrolytic capacitors are a type of capacitor that uses an aluminum oxide film as its dielectric. They are increasingly being used in consumer electronics due to their efficiency, low cost and inherent stability. The UVR1A220MDD is a popular model that can be found in many consumer electronics products. This article will discuss its application field and working principle.

Application Field

The UVR1A220MDD is primarily used as a filtering capacitor in power supplies. It is suitable for use in applications with a nominal voltage of up to 30V and frequency of up to 200kHz. It is often used as a buffer capacitor in power supplies, providing extra stabilization in high-voltage applications. It can also be used for smoothing and power factor correction of AC voltage.

This model can also be used in audible signal processing applications, such as audio amplifiers and recording devices. It is capable of filtering out unwanted high-frequency noise that can distort sound. It can also be used as a buffer capacitor to reduce noise interference in high-voltage audio applications.

Working Principle

The working principle of an aluminum electrolytic capacitor is based on the electrical characteristics of an insulating aluminum oxide film. This film is deposited on the inner surface of the capacitor\'s foil electrodes, which are usually made of aluminum. The edges of the electrodes form the two poles of the capacitor. The electric field created by the electric charges in the electrodes causes the accumulation of negative charges on the inner surface of the film, creating a dielectric layer.

At the same time, an electric current flows from one pole to the other, creating a reverse current inside the capacitor. This current counteracts the electric field created by the charges on the film, which reduces the capacitance of the capacitor. As the current increases, the capacitance decreases. The capacitance of the UVR1A220MDD is greatly affected by the amount of current flowing through it.

The UVR1A220MDD is a type of electrolytic capacitor that is designed to provide stability and reliability in a wide range of applications. Its dielectric layer is resistant to temperature and humidity changes, which makes it an ideal choice for high-voltage applications. The high capacitance and low ESR of the UVR1A220MDD make it an efficient and reliable choice for filtering, smoothing, and power factor correction applications.

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