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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors (ALECs) are polarized electrolytic devices that are used mainly for filtering, bypassing, and coupling applications. They make use of a porous oxide dielectric, which allows them to offer the highest capacitance to volume ratio among other capacitors.

860020373011 Application Field and Working Principle

860020373011 Aluminum Electrolytic Capacitors are mainly used in power electronics, computer products, telecommunications, audio devices, and in the automotive industry due to their superior energy capacity. As they possess a higher energy density than traditional capacitors, 860020373011 polarized capacitors are a popular choice for modern applications.

These capacitors operate by relying on a relatively large volume of a solid electrolyte, such as MnO2 which is then sandwiched between two metal electrodes and enclosed in an aluminum housing. The positively charged aluminum is the anode, while a layer of oxide, partly separable by the electrolyte, acts as the oxide dielectric. At the same time, the negative electrode is a precisely woven nickel cloth that serves as the cathode.

The electrolyte will then allow an ionic conduction such that when a voltage is applied to the 860020373011 aluminum electrolytic capacitor, it will generate an electric field across the oxide layer, thereby creating an electric double layer. This double-layer is capable of storing electric charges, and this forms the basis of the working principle of the 860020373011 aluminum electrolytic capacitor.

When the capacitor’s plate is charged positive with positive ions of the electrolyte, the created electric field causes attraction of the ions to the negative plate, thereby stabilizing the electric double layer and allowing charge storage.

The voltage applied across the 860020373011 aluminum electrolytic capacitor is the votage at which the oxide film breaks down and causes the oxide layer to be completely dispersed by the electrolyte. At this point, the electric double layer collapses, causing the capacitor to become short circuited and non-reversible.

When used in an application, the capacitor is typically charged or discharged depending on the movement of the electrons through it. Since the electrons have no static charge, when the electric field is applied, electrons will flow from the positive plate to the negative plate, resulting in the capacitor’s charge increasing or decreasing. This is known as capacitance.

Due to their large surface area, the 860020373011 aluminum electrolytic capacitors offer much higher energy capacity than their standard counterparts and are typically seen in power supply circuits, power amplifiers, and electronic motor drives. With their large capacitance, aluminum electrolytic capacitors are ideal for applications that require that capacitance to be held for a long period of time.

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