Capacitor with fusing protection

Abstract

The invention discloses a capacitor with fusing protection. The capacitor comprises a shell with the top of an opening structure, a lower electrode end plate is fixedly installed at the bottom end in the shell, an upper electrode end plate is slidably installed at the position, located above the lower electrode end plate, in the shell in the vertical direction, and an insulating plate is fixedly connected to the top of the upper electrode end plate; the upper end face of the insulating plate is connected with two telescopic conductors in the vertical direction, one telescopic conductor penetrates through the insulating plate and then is electrically connected with the upper electrode end plate, and the other telescopic conductor is electrically connected with the lower electrode end plate. The capacitor further comprises an upper cover arranged on the shell in a covering mode, two protection bases are fixedly installed on the upper end face of the upper cover, and the tops of the two protection bases are both connected with leading-out wires. According to the capacitor, the upper electrode end plate can move relative to or away from the lower electrode end plate, the charge storage capacity of the capacitor can be linearly changed by continuously changing the distance between the two electrode end plates, and therefore the application range of the capacitor can be widened.

Description

technical field [0001] The invention relates to the field of electrical equipment, in particular to a capacitor with fuse protection. 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. During the use of the capacitor, other components of the electrical equipment will generate current through the current, and the current will generate heat due to loss. When the temperature exceeds the upper limit temperature of the capacitor design, the capacitor will be burned. If the power supply cannot be cut off in time , it will cause serious consequences such as short circuit or fire. Therefore, in order to use electricity safely, a fuse is connected in series with the output wire of the capacitor in the prio...

AI Technical Summary

Problems solved by technology

[0003] The capacity of storing charges in a capacitor is directly related to the distance between the two electrode plates, but in the prior art, once the capacitor is fabricated, its overall structure remains fixed, so the distance between the two electrode plates also It is relatively fixed, which means that the storage charge capacity of the capacitor is fixed. The electrician calculates first when designing the circuit, and then selects the capacitor according to the need, which limits the use of the capacitor.

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