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Coaxial channel lightning protection device circuit

A lightning protection device and channel technology, applied in circuit devices, emergency protection circuit devices, electrical components, etc., to achieve the effects of simple structure, convenient installation and small size

Inactive Publication Date: 2012-08-22
SHANGHAI SUM SPD TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the coaxial cable shields the interference of some clutter in the air to the video signal, it is still fatal when the lightning current passes through, so installing a lightning protection device at the video terminal is the most basic and best protection for video equipment

Method used

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  • Coaxial channel lightning protection device circuit
  • Coaxial channel lightning protection device circuit
  • Coaxial channel lightning protection device circuit

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with accompanying drawing.

[0016] Such as figure 1 As shown, a coaxial channel lightning arrester circuit includes a gas discharge tube I, a TVS tube II and a coupling resistor R, and the gas discharge tube I and TVS tube II are connected through the coupling resistor R. Gas discharge tube I and TVS tube II constitute two levels of lightning protection

[0017] The present invention also includes a bridge circuit composed of four high-frequency fast recovery diodes D. The TVS tube II is connected to the bridge arm of the bridge circuit, which greatly reduces the interstage capacitance at both ends of the TVS tube and reduces the The interference introduced by entering the lightning protector, the gas discharge tube I is connected with the bridge circuit through the coupling resistor R.

[0018] Working principle: A gas discharge tube and TVS tube are connected in parallel on the input and output ci...

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Abstract

The invention relates to a coaxial channel lightning protection device circuit, which comprises a gas discharge tube I, a transient voltage suppressor diode (also called TVS diode) II, a coupling resistor R and a fast recovery diode D; the gas discharge tube I is connected with the transient voltage suppressor diode II through the coupling resistor R. Compared with the prior art, the circuit provided by the invention has the advantages of large through-flow capacity (5KA), fast response speed (nano-second level), small volume, convenience in installation and the like; as a multi-level protection circuit is adopted, the residual voltage is low; and moreover, the circuit is suitable for overvoltage protection of related devices which transmit videos and data signals through a coaxial cable, and can protect the device from being damaged by sensing the overvoltage and operating the overvoltage.

Description

technical field [0001] The invention relates to a lightning protector, in particular to a coaxial channel lightning protector circuit. Background technique [0002] Lightning is a powerful pulse spark discharge process in nature. The direct lightning current can reach 200KA. After the direct lightning strike occurs, the huge lightning current will be discharged into the earth in time through various metal conductors. The equipment connected to these metal conductors may be Damage, metal conductors and various electrical equipment not directly connected to these metals will also induce considerable lightning current pulses through various coupling mechanisms, which is enough to damage the equipment, so the issue of lightning protection should be enough to attract attention. [0003] Vision is the most important sense of human beings, and it is also the main source of information for human beings. According to statistics, 75% of the information that humans obtain from the out...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/06
Inventor 华小琴
Owner SHANGHAI SUM SPD TECH
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