EKMH251VNN561MA30T

Aluminum Electrolytic Capacitors

Electrolytic capacitors are widely used in the electric circuit with a wide range of applications. Among them, aluminum electrolytic capacitors, also known as aluminum electrolytic capacitors, is a type of capacitor with higher performance and wider application than ordinary capacitors. The EKMH251VNN561MA30T is an aluminum electrolytic capacitor that is often used. This paper will discuss the application field and working principle of the device.

Application field

EKMH251VNN561MA30T aluminum electrolytic capacitors have a wide range of applications, mainly including:

• High-end audio and other high-fidelity equipment: aluminum electrolytic capacitors have the characteristics of low noise, wide frequency, good stability and reliability, and are mainly used as coupling capacitors;

• Power conversion: Aluminum electrolytic capacitors are mainly used in 470 ~ 1000 μF, used for filtering, rectification etc., used for energy storage.

• DC high pressure filter: DC high pressure filter is also a commonly used device, which requires large capacitance and high voltage. Unsuitable capacitance will lead to large ripple current, so high voltage aluminum electrolytic capacitors should be used to reduce the ripple current.

• Power supply: Power supply is a very common device, and its voltage stability is very important. At the same time, aluminum electrolytic capacitors will be used as a device of low-pass filter circuit in power supply, filtering away the interference signal.

Working principle

The working principle of aluminum electrolytic capacitor is as follows: aluminum electrolytic capacitor is composed of two electrodes and a medium electrolyte, among which the electrolyte is a dielectric composed of aluminum oxide film. Automatic voltage regulating system is adopted to adjust the voltage of the capacitor. The formation voltage of aluminum oxide membrane is 1.8V, so aluminum electrolytic capacitor needs to be formed to work. In order to maintain the characteristics of the device, the circuit will remain at a certain voltage range.

When working, the voltage of the capacitor is determined by the equivalent contact resistance of the positive and negative poles, the leakage resistance of the capacitor, and the voltage change of the capacitor itself, the most important of which is the resistance of the capacitor. Under different voltage environments, the resistance of the capacitor is the main factor that affects the capacitance stability of the capacitor. In addition, the temperature and humidity of the environment will also affect the performance of the capacitor and its use. Therefore, the performance of the capacitor should be tested under different environments to ensure its normal use.

Conclusion

To sum up, EKMH251VNN561MA30T aluminum electrolytic capacitors have a wide range of applications, such as high-end audio and other high-fidelity, power conversion, DC high pressure filter, power supply, etc., and its working principle is that the device is composed of two electrodes and a medium electrolyte, and the voltage of the capacitor is determined by the equivalent contact resistance of the positive and negative poles, the leakage resistance of the capacitor and the voltage change of the capacitor itself. Therefore, in order to ensure the normal use of the capacitor, the performance of the capacitor should be tested under different environments.