LGU1K222MELB

Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors are made from an aluminum oxide film layer and are the most commonly used capacitors in electronic circuits. There are two primary types, one with a solid aluminum anode and the other with a liquid electrolyte anode. The main application of aluminum electrolytic capacitors is for coupling, decoupling, and filtering signals in electronic circuits.

LGU1K222MELB Application Field

The LGU1K222MELB is an aluminum electrolytic capacitor, specifically designed for use in systems and equipments of higher voltage or current. Applications of this type of capacitor include power supplies and regulators, switch-mode converters, ripple filter and line bypassing. Their major advantage is their high volumetric efficiency, which allows them to be used in confined spaces.

Working Principle

The working principle of an aluminum electrolytic capacitor is that the formed anode is a thin film of aluminum oxide that acts as an insulating layer. When a voltage is applied to the capacitor, current starts flowing from the anode, through the electrolyte, to the cathode. The current creates an electric field that causes the ions in the electrolyte to build up a double-layer of positive and negative ions on each of the electrode surfaces, thus creating a charge carriers between the two.

The electric field between the two terminals of the capacitor reduces over time and the capacitor reaches a steady-state if the voltage is steady. The applied voltage increases the capacitance of the capacitor, which is why the LGU1K222MELB has a rated capacitance of 1000uF when a DC voltage of 25V is applied. Additionally, the electrode terminals provide a low resistance path for fast and efficient charge/discharge of the electrolyte.

Conclusion

The LGU1K222MELB is an aluminum electrolytic capacitor that is often used in high-voltage and high-current applications. It works by allowing current flow through its thin aluminum oxide film anode, which creates an electric field to build up a double-layer of positive and negative ions on each of the electrodes. The capacitance of the capacitor increases when a DC voltage is applied. Overall, the LGU1K222MELB is an efficient and reliable choice for electronics applications.