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A lightning protection circuit suitable for twisted pair communication and its working method

A lightning protection circuit and twisted pair technology, which is applied in the field of communication, can solve problems such as fire and equipment damage, and achieve the effects of reducing the risk of damage, increasing reliability, and reducing economic losses

Active Publication Date: 2022-07-22
NANTONG UNIVERSITY
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a twisted-pair lightning protection circuit suitable for long-distance and high-frequency communication and its working method, so as to solve the problem of equipment damage and even fire caused by twisted-pair wire being struck by lightning in long-distance communication

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  • A lightning protection circuit suitable for twisted pair communication and its working method

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Embodiment Construction

[0023] In order to make the technical problems, technical solutions and advantages to be solved by the present invention more clear, the following will be described in detail with reference to the accompanying drawings and specific embodiments.

[0024] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", " The orientation or positional relationship indicated by "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, construction and operation in a particular orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first", "second", and "third" are used for d...

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Abstract

The invention provides a lightning protection circuit suitable for twisted pair communication and a working method thereof, wherein the lightning protection circuit comprises a DC bias protection circuit connected to two signal lines of the twisted pair, a first-level lightning protection circuit, The second-level lightning protection circuit and the third-level lightning protection circuit; the DC bias protection circuit is used to provide a bias voltage for the two signal lines, so that the idle signal state of the signal line can be determined; the DC bias protection circuit includes a pull-up circuit and a Pull-down circuit, the first-level lightning protection circuit is composed of a first-level ceramic discharge tube; the second-level lightning protection circuit is composed of two PPTC protection tubes and TVS transient suppression diodes; the third-level lightning protection circuit is used to prevent secondary lightning. The three-level lightning protection circuit is composed of a rectifier bridge composed of fast rectifier tubes, two varistors, and GDT ceramic discharge tubes. The lightning protection circuit of the invention provides a feasible and reliable lightning protection circuit design for the twisted pair communication, so that the long-distance communication through the twisted pair is safer.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a lightning protection circuit suitable for twisted pair communication and a working method thereof. Background technique [0002] Twisted pair is the most commonly used transmission medium in integrated wiring engineering. It has been fully utilized in long-distance communication because it has a good inhibitory effect on signal interference. However, long-distance communication brings a problem, that is, the signal line is struck by lightning, and the instantaneous voltage can reach hundreds of millions of volts, and ordinary chips cannot withstand such a high voltage, which can cause irreversible damage to the front-stage circuit and the back-stage circuit equipment. damage, resulting in a lot of economic losses. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to provide a twisted pair lightning protection circuit suitable for lon...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H9/04H02H9/06H02H3/08
CPCH02H9/04H02H9/06H02H3/08
Inventor 杨永杰葛文杰储沈悦郝雅敬张兴家
Owner NANTONG UNIVERSITY
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