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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors, also known as aluminum electrolytic capacitors, are one of the most widely used components in electronic circuits. B41570A7478Q000 is a typical example of such capacitors. It is mainly used in power supply circuits, switchers, and tone control circuits.

Application Field

B41570A7478Q000 capacitors are typically used in audio and power supply applications. For example, in an audio system, these capacitors are usually used in the amplifier section and are often used to filter out and block high-frequency noise from the power supply. This prevents distortion and improves the sound quality. Additionally, in switchers and tone control circuits, these capacitors are usually used to reduce the harmonic content of the signal and to provide high-frequency noise attenuation.

Working Principle

In an aluminum electrolytic capacitor, two electrodes (anode and cathode) are separated by a medium called the electrolyte. Each electrode is composed of an aluminum foil, separated from each other by a thin dielectric membrane. When electric current flows through the capacitors, negative ions from the electrolyte are attracted to the anode, while positive ions from the electrolyte are repulsed by the cathode. This creates an electric field between the two electrodes and forms a permanent electrical charge on both electrodes. The electric field between the two electrodes results in the capacitance of the capacitor, which is the ability of the capacitor to store energy.

The capacitance of an aluminum electrolytic capacitor is mainly determined by its area, which is proportional to the size of the foil electrodes, and its thickness, which is proportional to the thickness of its dielectric membrane. Additionally, the capacitance is also affected by the temperature. As an example, a B41570A7478Q000 capacitor has a capacitance of 470μF and a working voltage of 350 volts.

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