875075661009 Capacitors

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Aluminum - Polymer Capacitors

Aluminum-polymer capacitors are a type of highly efficient capacitor that combines excellent electrical characteristics with ease of use and large capacitance. They are typically used in a wide range of applications and have a long life span despite their relatively low cost. As such, they are increasingly being used as a viable solution for power supply design and storage.

875075661009 Application Field

Aluminum-polymer capacitors are used in various electronics, such as headphone amplifiers, high frequency switching power supplies, DC/DC converters, and power signal amplifiers for digital audio equipment. They may also be used in circuits where long lifetime and tolerance of ripple currents are necessary, such as power supplies for high frequency signal processing and power management. In addition, they are often used in automotive, medical, and measuring equipment.

Working Principle

Aluminum-polymer capacitors consist of a thick aluminum foil, which acts as the anode, and a thin polymer electrolyte, which acts as the cathode. The electrolyte contains ionic conductor, which provides charge transport between the two layers. The two layers are usually separated by a dielectric and the layers are held together by the pressure of the electrolyte and the adhesive coating to create the capacitor. When a voltage is applied across the plates, an electric field is created between the two layers, which causes the ions to migrate from one layer to the other, creating a charge imbalance. This charge imbalance is then resolved by the transfer of current from one plate to the other and the capacitor is charged.

Conclusion

Aluminum - Polymer capacitors are highly efficient capacitors with long life spans and high capacitance. They are used in a variety of applications, from consumer electronics and automotive equipment to medical devices and power supplies. Their working principle involves the movement of ions between the anode and cathode, which creates an imbalance of charges and ultimately leads to the transfer of current.

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