160LLE5R6MEFCCE6.3X11

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160LLE5R6MEFCCE6.3X11 application field and working principle

Aluminum electrolytic capacitors are widely used in various electrical and electronic equipment and are considered one of the most important components of these devices.

1. Application Field

Aluminum electrolytic capacitors are mainly used in various types of electrical and electronic equipment, which includes:

• Electronic equipment: Electric signal processing, DC-DC converters, TV sets, OA equipment, computers, audio, communication equipment.
• Power equipment: AC-DC converters, DC-AC converters, inverters, PFC converters, UPS, switching power supplies.
• Automotive electronics: AC-DC converters, DC-DC converters, inverters, powertrain control units, ABS, audio, video systems and power steering.

2. Working Principle

The working principle of aluminum electrolytic capacitors is based on Faraday\'s law of electrolysis. An aluminum oxide layer is used to separate the two electrodes, and the electrolyte provides an electrostatic field to keep them apart. The electrodes are connected to two poles in a circuit.

When an electric potential difference is applied to the two electrodes, electrons move in the circuit, creating a capacitance. The magnitude of the capacitance is determined by the combination of the electric field between the two electrodes and the thickness of the oxide layer. The higher the electric field and the thinner the oxide layer, the greater the capacitance.

3. Structure

Aluminum electrolytic capacitors are typically composed of three parts: an electrically conductive metal casing, a cathode plate with a chemically etched surface, and a metal oxide layer. The metal casing serves as the electric field\'s containment chamber and is used to guide the current from the electrolyte to the two electrodes.

The cathode plate is made of aluminum and is etched with a number of small grooves. These grooves help to increase the surface area of the capacitor and help to evenly distribute the electric field. The metal oxide layer is a very thin layer of aluminum oxide which is responsible for providing theelectrostatic field.

4. Classification

Aluminum electrolytic capacitors can be divided into three main categories based on their structure and parameters: closed-end electrolytic capacitors, open-end electrolytic capacitors, and edge-type capacitors.

Closed-end electrolytic capacitors are most commonly used as they have a higher capacitance and lower ESR than other types. Open-end electrolytic capacitors are less commonly used as they have a much lower capacitance but a much higher ESR than closed-end capacitors. Edge-type capacitors, on the other hand, are the least common type and have a very low capacitance but a very high ESR.

Conclusion

Aluminum electrolytic capacitors are widely used in various types of electrical and electronic equipment due to their reliable performance and long life. The working principle of aluminum electrolytic capacitors is based on Faraday\'s law of electrolysis, and the capacitance is determined by the combination of the electric field between the two electrodes and the thickness of the oxide layer. Aluminum electrolytic capacitors are typically composed of three parts: an electrically conductive metal casing, a cathode plate with a chemically etched surface, and a metal oxide layer. Aluminum electrolytic capacitors can be divided into three main categories based on their structure and parameters.

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