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Aluminum Electrolytic Capacitors

A 100MXG1500MEFC25X30 aluminum electrolytic capacitor is a polarized aluminum electrolytic capacitor that uses an electrode made of aluminum foil with very fine aluminum oxide film as the medium. Many factors affect the performance of aluminum electrolytic capacitors such as the uniformity of film thickness, the shape of film/aluminum oxide, and the electrolyte used. The advantage of aluminum electrolytic capacitors is its excellent capacitance determinacy, high capacitance, small size, and low cost.

Applications

Aluminum electrolytic capacitors are widely used due to their many features. Some common applications include:

• Bypass and decoupling applications
• Switching power supply
• Low and high frequency filtering
• Audio, video, and digital signal processing
• Power transmission and distribution equipment
• Industrial electronics and automation

Working Principle

The basic principle of an aluminum electrolytic capacitor is that a layer of oxide film is formed on the aluminum foil surfaces by anodic oxidation. The positive pole of the capacitor is connected to the anode and the negative pole is connected to the cathode. The electrolytic capacitors are mainly divided into two categories according to the nature of the layered insulating film on the surface of aluminum foil: solid-state aluminum electrolytic capacitors and liquid-state aluminum electrolytic capacitors.

Solid-State Aluminum Electrolytic Capacitors

Solid-state aluminum electrolytic capacitors have an ideal layer of oxide film on the surface of aluminum foil, which is usually formed by an electrolytic conductive polymer material. When an electric current is applied, the polymer is polarized and forms a highly stable oxide film. This oxide film is the dielectric of the electrolytic capacitor.

Liquid-State Aluminum Electrolytic Capacitors

Liquid-state aluminum electrolytic capacitors utilize an electrolyte composed of a organic solvent and an electrolyte salt. When an electric current is applied, polar molecules are formed near the aluminum foil which form a dielectric on the aluminum foil. This is known as an \'electrolytic effect\'. As the electrolyte is a liquid, this type of capacitor is prone to leakage and aging.

Conclusion

The 100MXG1500MEFC25X30 aluminum electrolytic capacitor is a type of polarized aluminum electrolytic capacitor that has excellent capacitance determinacy, high capacitance, small size, and low cost. It is widely used in many applications, such as bypass and decoupling, switching power supply, low and high frequency filtering, audio, video, and digital signal processing, power transmission and distribution equipment, and industrial electronics and automation. Its working principle is based on a layer of oxide film formed on the aluminum foil surface by anodic oxidation and the use of an electrolytic conductive polymer material.

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