LGU2G471MELC

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Aluminum Electrolytic Capacitors
• LGU2G471MELC Application Field and Working Principle

Aluminum electrolytic capacitors, also known as electrolytic capacitors or electrochemical capacitors, are widely used in power electronics, and many resonant circuits, such as voltage doubler circuits, require higher capacitance and wider capacitance variation range. They are widely used in the field of filter, decoupling, bypass, and resonance. The common aluminum electrolytic capacitor product has a thick film outer electrode, a thin-film inner electrode, an insulating layer in between, a sealing layer and an electrolyte. The product can be divided into three types by shape: cylindrical type, rectangular type, and flat thin type.

LGU2G471MELC is an aluminum electrolytic capacitor. It belongs to the flat thin type product. It adopts a flat thin packaging structure, which has high density and small volume. Its rated voltage is 4V, and its capacitance is 470μF. Its main application fields are decoupling, filtering, resonance and energy storage, suitable for circuit power supply Equivalent circuits containing high frequencies and large energy components.

The working principle of LGU2G471MELC aluminum electrolytic capacitor is mainly based on the characteristics of capacitors. In the corrosive electrolyte, the formation of the anode oxide film and the electrolytic reaction block the current. Handle two relative equal area, different electrical properties of the surface, the dielectric has electric characteristics, its working principle is as follows: Aluminum electrolytic capacitors are mainly composed of an aluminum foil electrode (anode), a sheet aluminum electrode (cathode), a dielectric between the two layers (the main component of the dielectric is the aluminum oxide film formed on the surface of the anode foil). Such capacitors usually add a jelly-like electrolyte, which makes the formed oxide film have a certain conductivity, so that a large internal equivalent electric conductivity gap is formed, and a dielectric between the two layers is formed.

When the two electrodes are connected with an external circuit and subjected to an AC voltage, an electric field is formed between the two electrodes, resulting in an electronic displacement in the electric field. Since the oxide film oxide has a certain equivalent secondary electric conductivity effect, the charges of the two electrodes opposite to each other can be conducted during the displacement process, so that the electric field keeps a relatively balanced state, thus attenuating the current and realizing the effect of electrical energy storage.

In conclusion, LGU2G471MELC is an aluminum electrolytic capacitor product. It is mainly used in the fields of decoupling, filtering, resonance, and energy storage. Its working principle is mainly based on the characteristics of capacitors. It can form a certain electric gap between the two electrodes by using the conductivity of the oxide film, finally achieving the purpose of attenuating the current and reducing the effect of electrical energy storage.

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