LGW2G221MELA35

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Aluminum electrolytic capacitors are electronic components that store and release electrical energy. They can be used for applications such as signal conditioning, power isolation, filtering, and energy storage. The LGW2G221MELA35 is a popular series of aluminum electrolytic capacitor from LG Innotek. This article will discuss its application fields and working principle.

Aluminum electrolytic capacitors are electrolytic capacitors that use a thin layer of anodic aluminum oxide as the dielectric medium. The anodic layer is formed when electrons given off by the anode react with oxygen molecules in the electrolyte solution. The capacitance of the LGW2G221MELA35 series is medium to high, at 2.2-22uF, with a rated voltage of 35V. This makes them suitable for applications such as power conditioners, AC/DC converters, power line filters, and general purpose decoupling capacitors.

The primary application of the LGW2G221MELA35 series is as input capacitors for AC/DC converters and power supplies. These capacitors help to smooth the AC input current, reduce ripple voltage and improve power stability. They are also used in power conditioning systems to reduce switching noise, suppress inrush current, and provide high virtualization of power supply. Furthermore, they can be used in general-purpose decoupling circuits to minimize crosstalk, reduce noise, and stabilize voltage output.

The working principle of an aluminum electrolytic capacitor is based on Faraday’s law of electrochemical capacitance. When the potential difference between the two electrodes of the capacitor is changed, the charge transferred between them is maintained by the capacitor. This charge is stored or released depending on the direction of the applied voltage. When electricity flows through the capacitor, charge flows to the positively charged anode, and the oxide layer on the anode increases in thickness. This unused capacitance is stored as potential energy, which can be released when the voltage is reversed.

The LGW2G221MELA35 series of aluminum electrolytic capacitors is designed with a long life span of up to 8,000 hours at a rated temperature of 85°C. They are also highly resistant to heat, moisture, and humidity, making them ideal for harsh environments. Their high capacitance, long life, and resistance to environmental conditions make them a good choice for applications such as power conditioning, AC/DC converters, and general purpose decoupling circuits.

In conclusion, the LGW2G221MELA35 series of aluminum electrolytic capacitors is a reliable and robust electronic component with a wide range of applications. They are most commonly used as input capacitors for AC/DC converters and power supplies, but they can also be used in a variety of signal conditioning, power isolation, filtering, and energy storage applications. Their long life, high capacitance, and resistance to environmental conditions make them an excellent choice for many applications.

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