Novel capacitor

Abstract

The invention discloses a novel capacitor. The novel capacitor comprises a shell, the upper end of the shell is provided with a first left pin, a second left pin, a first right pin and a second right pin which are independently insulated. A vertical hollow mandrel is arranged in the shell and made of plastics and other insulating materials. A first metallized film is wound on the mandrel. The first left pin is electrically connected to the upper end of the first metallized film through a connection line. The second left pin is electrically connected to the lower end of the first metallized film through a connection line penetrating through the mandrel, that is, the first metallized film, the first left pin electrically connected with the first metallized film and the second left pin form a first independent capacitor body. The capacitor has the advantages of being low in cost, little in loss, good in self-healing performance, long in service life, high in safety protection level and the like.

Description

technical field [0001] The invention relates to the technical field of electronic components, in particular to a novel capacitor. Background technique [0002] Capacitors are extremely widely used electronic components. With the development of technology, in order to make the application range of capacitors wider, for example, so that the capacitance value of a capacitor can be changed according to the needs of use, combined capacitors appear. However, the structure of most combined capacitors is relatively complicated, or the space in the housing cannot be fully utilized; and the metallized films currently used to manufacture film capacitors are composite zinc-aluminum metallized films. Aluminum-plated metallized film has good adhesion, and the production process is easy to handle, but aluminum-plated metallized film is easily oxidized in the air to form a dense oxide layer with aluminum oxide as the main component. Although this oxide layer can prevent The metallized fil...

AI Technical Summary

Problems solved by technology

However, the structure of most combined capacitors is relatively complicated, or the space in the housing cannot be fully utilized; and the metallized films currently used to manufacture film capacitors are composite zinc-aluminum metallized films

Aluminum-plated metallized film has good adhesion, and the production process is easy to handle, but aluminum-plated metallized film is easily oxidized in the air to form a dense oxide layer with aluminum oxide as the main component. Although this oxide layer can prevent The metallized film is further oxidized, but when working under AC high voltage and high current, the oxide layer will lead to a rapid decline in the capacity of the capacitor; for this reason, a layer of zinc on the basis of the metallized film can be well prevented. The inner aluminum layer forms an oxide layer, so that the capacity of the capacitor does not drop rapidly, but the metallized film galvanized layer is more reductive, and the rate of oxidation in the air is faster, and the zinc oxide formed by oxidation has a fluffy It is difficult to prevent further oxidation, so the metallized film galvanized layer is not only difficult to handle during processing, but also easily leads to accidents of heating or even breakdown of the capacitor

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