861111483005

Aluminum Electrolytic Capacitors

The 861111483005 application field and working principle are generally considered to be the core components of aluminum electrolytic capacitors. This type of capacitors use aluminum foil as the anode material and use an electrolyte solution as the cathode material and in between these two, an oxide layer is formed. This oxide layer forms a dielectric layer between the anode and the cathode, allowing the capacitor to store electrical energy.

This type of capacitors are usually made to handle a very wide range of voltages and frequencies, from low end to high end, from the frequency range of AC up to the microwave region. This wide operating range and the high dielectric constant of aluminum makes it suitable for many applications, from small-signal amplifiers to high-power servo circuits.

In terms of working principle, when a voltage is applied across the capacitor terminals, an electric field is built up in the electrolyte, which in turn creates a storage field across the dielectric layer in the capacitor. This field stores energy in the form of excess charge, which can be released when the voltage is removed and the capacitor is discharged.

The amount of energy that can be stored in the capacitor depends on its capacitance, which is proportional to the surface area of the electrodes and the thickness of the dielectric layer. Therefore, large aluminum electrolytic capacitors are usually characterized by high capacitance values and longer lifespans than other capacitors.

Aluminum electrolytic capacitors also exhibit excellent temperature stability and ripple current ratings, making them especially suitable for applications such as power supplies, filters, or in high-power circuits. Although some other capacitor types can have higher capacitance values and longer lifespans, aluminum electrolytic capacitors remain the choice for many applications because of their cost-effectiveness and excellent performance.