CGR222T075R4C

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Aluminum electrolytic capacitors are an important type of capacitors that have become more and more popular in the electronics industry. Aluminum electrolytic capacitors rely on the electrolytic effect of aluminum foils in an electrolyte to store energy. The CGR222T075R4C capacitor is a common model of aluminum electrolytic capacitors. This article provides an overview of the application field and working principle of the CGR222T075R4C capacitor.

The CGR222T075R4C capacitor is a high capacitance and long life aluminum electrolytic capacitor. It is typically used in power electronics, such as inverters, motors, and lighting. These applications require high reliability and high voltages, usually in the range of 2 to 5KV. The CGR222T075R4C capacitor is also used in industrial instrumentation, automotive electronics, and medical instrumentation.

The working principle of the CGR222T075R4C capacitor uses a combination of electrolyte and two aluminum electrodes to achieve its capacitor function. One electrode is often referred to as the anode and it is typically made of aluminum foil or has a sprayed coating. The anode is then immersed in electrolyte - a liquid containing charged ions. The electric current flowing between the two electrodes changes electrolyte into ions and attracts them to the opposite electrode, thus introducing a charge imbalance on the two surfaces.

The other electrode - referred to as the cathode - is typically made of aluminum foil, and it is much thicker than the anode, providing stability to the device. The cathode is also typically treated with a passivation layer, usually made of manganese dioxide, to be compatible with the electrolyte and increase the life of the capacitor. When a voltage is applied, an electric field is created between the two electrodes, leading to the accumulation of charges - the main function of the capacitor.

The CGR222T075R4C capacitor features low equivalent series resistance (ESR), high ripple current DC-rated capacitance, and long life. It also has a wide operating temperature range of -40~+105° C, making it suitable for temperatures outside the normal range usually found in consumer applications. Additionally, it is available with various terminal configurations as well as screw type terminals.

In conclusion, the CGR222T075R4C capacitor is an aluminum electrolytic capacitor widely used in high voltage power applications, industrial instrumentation, automotive electronics, and medical instrumentation. The working principle of the CGR222T075R4C capacitor uses the electrolytic effect between two electrodes and an electrolyte. It features a low ESR, high ripple current, and long life, making it suitable for high reliability applications.

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