Surge-prevention circuit of network interface

An anti-surge and circuit technology, which is applied in the direction of circuit devices, emergency protection circuit devices, electrical components, etc., can solve the problems of low surge protection and easy damage to network card chips, etc., and achieve the effect of improving the anti-surge level

Inactive Publication Date: 2018-03-13
PHICOMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a network port anti-surge circuit, which is used to solve the technical problem that the surge protection in the prior art is not high, and the chip of the network card is still easy to be damaged.

Method used

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  • Surge-prevention circuit of network interface
  • Surge-prevention circuit of network interface
  • Surge-prevention circuit of network interface

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Embodiment Construction

[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments . Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0027] The invention discloses a network port anti-surge circuit, which is applied to communication terminals, such as figure 1 As shown, the communication terminal includes a network interface 110, a network card chip 130 and a network transformer 120 connected between the network interface 110 and the network card chip 130; A primary protection circuit 210 between the interface 110 and the network transformer 120 ; and a secondary protec...

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PUM

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Abstract

The invention discloses a surge-prevention circuit of a network interface. The surge-prevention circuit is applied to a communication terminal, the communication terminal comprises a network interface, a network card chip and a network transformer, the network transformer is connected between the network interface and the network card chip, the surge-prevention circuit of the network interface comprises a primary protection circuit and a secondary protection circuit, the primary protection circuit is arranged between the network interface and the network transformer, and the secondary protection circuit is arranged between the network transformer and the network card chip. By the surge-prevention circuit, a surge current can be effectively released, surge energy is absorbed, the integral surge-prevention class is improved, so that an electronic component such as a network card chip is effectively protected, and damage to the surge-prevention circuit due to the surge current is prevented.

Description

technical field [0001] The invention relates to the field of anti-surge technology, in particular to an anti-surge circuit for a network port. Background technique [0002] The surge current mainly refers to the phenomenon that the power supply or communication line generates a momentary strong pulse current during the transmission or just opening process. The duration of this instantaneous surge current is short, but the current intensity is very high, which can reach 1000 ~10000A, due to the ultra-high current, it is likely that the circuit components will burn out at the moment of the surge, resulting in damage to the equipment. [0003] In actual communication applications, the network cable interface (also known as RJ45) is vulnerable to lightning strikes and induced lightning strikes, resulting in surges, which seriously cause network port communication failures, so network port lightning protection is very important. [0004] In the prior art, only front-end surge pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/00H02H9/02
CPCH02H9/005H02H9/02
Inventor 何山
Owner PHICOMM (SHANGHAI) CO LTD
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