What is an electrolytic capacitor?

Electrolytic capacitor is a type of electrical storage device that uses an electrolyte solution as one or both of its wires. The charged chemical particles called ions perform electricity in the electrolyte solution. Standard capacitors consist of two metal wires separated by an insulator called dielectric. The use of electrolyte solution as a conductor effectively increases its surface surface, allowing to store larger charge than in standard capacitors of the same size. Electrolytic capacitors are often used in power supply filters and store the electricity needed to alleviate output outputs.

The metal conductor of the electrolytic capacitor is made of thin foil. Dielectric is an oxide of this metallic layering on the foil by an electrochemical process called anodization. This process is supported only by certain metals and aluminum and tantalum are most commonly used. Foils with dielectric layer form an anode or the path of input proelectric current. ElectrolyteU and uninsulated length of the foil forms an cathode or output path for electric current.

aluminum electrolytic capacitor is made of highly clean aluminum foil. The efficient surface surface of the film increases the etching before the generated dielectric layer of aluminum oxide. A layer of absorbent paper is located between the anode and the cathode foil, then the entire tournament rolls into the coil. The pin connectors are connected and the construct is placed in the aluminum case. The device is then immersed in an electrolyte bath, usually in a solution of borite or sodium acid, thoroughly wetting the foil and paper layers.

Electrolytic capacitors Tantalum were originally produced a similar aluminum version, with a remarkable difference that the electrolyte was a solution of sulfuric acid. Rather solid than the wet tantalum capacitor now made. Because tantalum capacitors are much more expensive than aluminum, they are usually available POsvase in small low -voltage versions for electronic devices such as mobile phones.

Thin, dielectric oxide layer is generated by an electrolytic process very similar to the process used in the normal use of the capacitor. Due to the electrolytic capacitor dielectrics may be self -service with regular use within the specified parameters. It can also be slowly destroyed unless the correct polarity or direction of the current is paid.

The design of the electrolytic capacitor allows properties especially suitable for certain purposes. The use of electrolytic solution gives them the ability to maintain a larger charge in a smaller volume. This also led to certain obligations. At the beginning of 2000, the wrong formulation of the electrolyte solution used by some manufacturers led to a number of disorders known as the condenser plague. Even in a properly coelecrocetic capacitor with a nstation, the use of liquid solution is susceptible to drying failure.