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Aluminum Electrolytic Capacitors

LNT2H822MSEJ Application Field and Working Principle

Aluminum electrolytic capacitors, also known as electrolytic film capacitors, are the most widely used capacitors because of their low cost and capability to store significant amounts of energy at high voltage levels.

The LNT2H822MSEJ is an aluminum electrolytic capacitor specifically designed for use in various power supply and low-frequency control applications. It is constructed from a special aluminum foil which has been anodized on one side and coated with an electrolytic dielectric on the other side. This capacitor is ideal for providing efficient filtering and buffering of the voltage signals. It is available in a variety of sizes, with the largest being 17mm in diameter and 50mm in length.

The working principle of the LNT2H822MSEJ is based on Faraday\'s law of electrolysis. The capacitor is composed of two coaxial cylindrical aluminum capsules, which are separated by a large, thin layer of the electrolytic dielectric. When a voltage is applied to the two terminals, the application of electrochemical polarisation causes electrolysis to take place and a thin layer of oxide is formed on the open end of each of the cylinders.

This oxide layer, combined with the dielectric material, acts as a barrier between the two electrodes and prevents current flow between them. The effect of this is to create an insulation between the terminals while allowing an electrical field to be maintained across them. This field creates a capacitance that is regulated by changing the voltage applied across the terminals. The resulting capacitance is then used to filter and buffer power and control signals.

The LNT2H822MSEJ is particularly useful in applications where a high-energy capacitor is required, such as for filtering and buffering high-voltage signals in power supplies, low-frequency motor drives and other electronic circuits. It is available in a wide range of sizes, from 0.0625” to more than 1.25”, and can accommodate a wide variety of circuit requirements.

The LNT2H822MSEJ is a versatile capacitor that offers high energy storage and effective filtering and buffering for numerous power supply and low-frequency control applications. It is offered in a variety of sizes and can be easily incorporated into existing systems. Its rugged construction and compatibility with modern electronic systems make it an ideal choice for any application.

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