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Surge protection device of mid-span active Ethernet

A surge protector and Ethernet technology, applied in the field of electric power equipment, can solve problems such as equipment port damage and communication interruption, and achieve the effects of small insertion loss, convenient installation and large current capacity

Inactive Publication Date: 2015-02-18
NANJING UNIV OF INFORMATION SCI & TECH
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Problems solved by technology

[0002] Lightning is a natural discharge phenomenon. The harm caused by lightning to communication facilities is mainly reflected in the electrostatic induction of lightning and electromagnetic induction of lightning. The lightning overvoltage formed by the electrostatic induction and electromagnetic induction of lightning is transmitted to the equipment terminal through the communication cable, causing The port of the device is damaged, causing the communication to be interrupted

Method used

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  • Surge protection device of mid-span active Ethernet

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Embodiment Construction

[0018] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0019] Such as figure 1 The schematic diagram of the circuit structure of the present invention is shown, a kind of surge protector for active Ethernet with mid-span method, the active Ethernet adopts the mid-span method, including network signal protection unit, power supply unit and RJ45 input and output interface.

[0020] The network signal protection unit includes a lightning wave energy release circuit, a decoupling circuit and an inter-line clamping circuit. The lightning wave energy release circuit includes a first three-pole gas discharge tube GDT1 and a second three-pole gas discharge tube GDT2. The coupling circuit includes a first resistor R1, a second resistor R2, a third resistor R3 and a fourth resistor R4, and the line-to-line clamping circuit includes a first bidirectional TVS diode T1 and a second bidirectional TVS diode ...

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Abstract

The invention discloses a surge protection device of mid-span active Ethernet. The active Ethernet adopts mid-span, the surge protection device comprises a network signal protection unit, a power supply unit, an RJ45 input interface and an RJ45 output interface, the network signal protection unit comprises a first tripolar gas discharge tube, a second tripolar gas discharge tube, a first resistor, a second resistor, a third resistor, a fourth resistor, a firs directional transient voltage suppressor and a second directional transient voltage suppressor, and the power supply unit comprises a first piezoresistor, a second piezoresistor, a third piezoresistor, a first inductor, a second inductor and a temperature fuse. The mid-span active Ethernet can suppress lightning overvoltage formed by electrostatic induction of lightning and electromagnetic induction, lightning current energy is released, and normal operation of the active Ethernet is ensured.

Description

technical field [0001] The invention belongs to the field of electric power equipment, and in particular relates to a surge protector for an active Ethernet with a mid-span method. Background technique [0002] Lightning is a natural discharge phenomenon. The harm caused by lightning to communication facilities is mainly reflected in the electrostatic induction of lightning and electromagnetic induction of lightning. The lightning overvoltage formed by the electrostatic induction and electromagnetic induction of lightning is transmitted to the equipment terminal through the communication cable, causing The port on the device is damaged, causing a loss of communication. Active Ethernet is one of the commonly used network communications. [0003] Active Ethernet refers to the technology that can provide DC power supply for some IP-based terminals while transmitting data signals for some IP-based terminals without any changes to the existing Ethernet Cat. . The standard Cate...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/04H02H9/06
Inventor 李祥超周中山陈则煌陈璞阳
Owner NANJING UNIV OF INFORMATION SCI & TECH
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