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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors are based on the two-stage electrical double layer formed on the surface of the dielectric aluminum oxide film formed on the surface of the aluminum foil of the anode, which is the most widely used type of capacitor. The UPJ1A272MHD6TN belongs to this type.

Application Field of UPJ1A272MHD6TN

The UPJ1A272MHD6TN is mainly used for power circuit applications such as smoothing of high-frequency interference, noise suppression of power circuit and quenching of surge current. It is also applicable to self-excited oscillation circuit, AC customer dynamic compensation circuit and output filter rectification circuit in servo systems.

Working Principle of UPJ1A272MHD6TN

In an aluminum electrolytic capacitor, the anode is an aluminum foil with a special treatment, which is an active material and becomes a polarized electrode as soon as the electrolyte is added. At the same time, the oxide film formed on the surface of the impurity layer of the aluminum substrate this instant serves as the dielectric of the capacitor. The polarization electrode is an electrolytic solution that gives the anode surface an affinity for positive ions. On the other hand, the cathode is a metal with a large energy gap, and the electrons in the external circuit are attracted to the lower energy level of the anode. The remanent polarization of the dielectric composed of the oxide film changes the thickness of the dielectric, which changes the capacitance caused by the polarization.

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