Thin film capacitor

Abstract

The invention belongs to the technical field of variable capacitors, and particularly relates to a thin film capacitor which comprises a shell, a center rod A, a center rod B and a rotating rod, the shell is cylindrical and is divided into an upper part, a middle part and a lower part by a supporting plate, the supporting plate is circular and is fixedly connected with the inner wall of the shell, and an arc-plate-shaped electrode A is embedded in one side of the inner wall of the shell; the top of the center rod A is fixedly connected with an electrode B. The outer wall of the center rod A is horizontally and fixedly connected with a semicircular-plate-shaped driving piece. The top of the rotating rod is provided with a deep hole and fixedly connected with the electrode B through a spring set. The bottom of the spring set is fixedly connected with the bottom of the deep hole. The top of the spring set is fixedly connected with the bottom of the electrode B. Ripple current possibly generated in a circuit is shunted in a parallel connection mode, so that the heating phenomenon of a main capacitor is reduced, the structure is simple, the size of the capacitors connected in parallel can be automatically adjusted when the internal temperature of the capacitors changes, and different shunt cooling effects are achieved.

Description

technical field [0001] The invention belongs to the technical field of variable capacitors, and in particular relates to a film capacitor. Background technique [0002] Two conductors that are close to each other, with a layer of non-conductive insulating medium in between, constitute a capacitor. A capacitor stores charge when a voltage is applied between its two plates. Capacitors play an important role in tuning, bypassing, coupling, filtering and other circuits. It is used in the tuning circuit of transistor radio, and in the coupling circuit and bypass circuit of color TV. With the rapid development of electronic information technology, the upgrading speed of digital electronic products is getting faster and faster. The production and sales of consumer electronic products, mainly flat-panel TVs, notebook computers, digital cameras and other products, continue to grow, which drives the growth of the capacitor industry. [0003] Capacitors whose capacitance can be adju...

AI Technical Summary

Problems solved by technology

In this invention, water pipes are used to wind the capacitors, and the water flows in the water pipes to cool down the capacitors. At the same time, the fan is rotated to further increase the heat dissipation and cooling effect of the capacitors. However, this invention realizes the heat dissipation effect by adding a cooling device on the basis of the capacitor structure The structure is relatively complicated, and the space occupied is large, which is not conducive to the installation and use of capacitors

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