861221385012

Aluminum Electrolytic Capacitors: 861221385012 application field and working principle

Aluminum Electrolytic Capacitors are versatile electrical components used in a wide variety of applications, such as filters, noise suppression, and energy storage. The 861221385012 series of aluminum electrolytic capacitors, which are a type of polar electrolytic capacitor, are typically found in medium to high power applications. This article will discuss the application of the 861221385012 series of capacitors, the construction and function of the capacitors, as well as their working principle.

Application of 861221385012 Series Capacitors

The 861221385012 series are designed primarily for medium and high power applications, with a wide range of values, voltages, and capacitances available. Due to their increased capacitance and relatively low capacitance-to-volume ratio, these capacitors are typically used in tasks such as the smoothing and rectification of high voltage or current pulsed signals, linear and switching power supplies, high power Radio Frequency oscillators, and heating and lighting equipment. The 861221385012 series are also used as filters and voltage regulators for DC-DC power converter applications, as well as for noise suppression on automotive 12 volt, 24 volt, and higher electrical systems.

Construction and Function of 861221385012 Capacitors

The 861221385012 series aluminum electrolytic capacitors employ a self-regulating, semi-permeable, dielectric electrolytic membrane to enable higher voltage capabilities and improved stability over standard aluminum electrolytic capacitors. The electrodes are made from aluminum and are also known as plates, while the electrolytic solution is a gel-like substance consisting primarily of boric acid, acetic acid, and water. Each electrode is protected by a non-conductive sleeve to isolate the two circuits and prevent any electrical short-circuits.

In addition to the aluminum electrolyte, the 861221385012 series aluminum electrolytic capacitors are also equipped with paper dielectric insulators. These paper insulators are designed to buffer the electrical signal and to protect the capacitors from short-circuits and other risks. The series of capacitors is also designed with a self-healing feature, which allows the capacitors to still function should the dielectric become damaged or breached.

Working Principle of 861221385012 Series Capacitors

The 861221385012 series of aluminum electrolytic capacitors use an electrolytic membrane as the dielectric medium between the two electric field plates. When an electrical voltage is applied across the membrane, ions in the electrolyte are attracted to the positive electrode, and the electrolytic membrane forms a conductive bridge between the two electrodes. This conductive bridge allows electric current to flow between the two electrodes, and the resulting electric field produces a capacitance between the two terminals.

The capacitance of each 861221385012 series capacitor is affected by the volume and surface area of the electric field plates, as well as the thickness and composition of the electrolytic membrane. As the voltage across the membrane increases, the total capacitance also increases. This phenomenon is known as capacitive reactance and is used to reduce the amount of electric current flowing through the capacitor body, increasing the overall stability of the device.

Conclusion

In conclusion, the 861221385012 series of aluminum electrolytic capacitors are designed for higher voltage applications, with superior stability, higher capacitance, and a self-healing feature. The capacitance of these capacitors is a result of the electric field produced by an electrolytic membrane between two aluminum electrodes, with the capacitance increasing as voltage increases due to capacitive reactance. The 861221385012 series capacitors are used in a variety of medium to high power applications, such as linear and switching power supplies, filters, and suppression of automotive electrical systems.