CN203243355U - Network signal coupling and lightning protecting circuit - Google Patents

Abstract

The utility model relates to a network signal coupling and lightning protecting circuit which is arranged on a circuit board and located between a network connector and a network chip. A processing circuit is respectively provided with four channels each having two circuits. The four channels are sequentially and continuously provided with a lightning protecting module and coupling modules from the network connector to the network chip. The lightning protecting module is provided with four lightning protecting chips each having a work voltage pin, a grounding pin, and four output/input pins. Each lightning protecting chip is electrically connected with the two circuits of each of two of the channels respectively through the four output/input pins, and each channel is simultaneously electrically connected with two of the output/input pins of each of two of the lightning protecting chips. The grounding pins of the lightning protecting chips are electrically connected to a first grounding terminal. In this way, the set number or the processing current upper limit of TVS internal circuit equivalent layer diodes can be reduced and thus the objective of reducing the product cost can be realized while the effect of preventing lightning strokes from damaging elements is provided.

Description

Network signal coupling and lightning prevention circuit

Technical field

The utility model provides a kind of network signal coupling and lightning prevention circuit, espespecially treatment circuit is in network connector towards sequentially being provided with anti-lightning strike module and coupling module between the network chip, anti-lightning strike module is electrically connected at respectively two circuit of two different passages with four output inputs of anti-lightning strike chip pin, and each passage is for being electrically connected at simultaneously two anti-lightning strike chips, wantonly two passages share again an anti-lightning strike chip, just can reduce the chip magnitude setting, and then reach the purpose that reduces product cost.

Background technology

The now fast development of computer technology, and desktop computer or notebook computer general be present in each corner in the society, its computer development trend is also strong towards calculation function, speed reaches soon the little direction of volume and strides forward, because during network communications technology is also rapidly flourish, and people are lived, study, work is brought another different brand-new boundary in the past into leisure, make between men and can mutually transmit required real time information by network communication, advertising or contact mail etc., simultaneously by the various information of Web search, instant messaging or online game etc. make people more fervent and inseparable with the network Relations Among.

But the part of network is come the transmission of data for having with two kinds of modes such as cable connection and wireless transmission, the cable interconnection technique just need be equiped with network connector, the legacy network connector is for having transformer module and common mode inhibition module, see also shown in Figure 6, the practice of general manufacturer is that transformation coil B and filter coil C are installed on the circuit board A, and transformation coil B and filter coil C are arranged with wire D1 on core D, the joint of wire D1 end is the contact that is welded in circuit board A, because coil needs to cause production efficiency low with manual the winding, more can't automated production, coil also ruptures easily and allows cost improve, and what twine is tight, distance, the differences such as the number of turns also can impact effect, and causes product quality very different.

In addition; aforesaid network cable; usually can be exposed to outside the building because of considering on arranging; therefore; when grid line is struck by lightning and is produced abnormally high-voltage; abnormally high-voltage will conduct to via grid line the network connector of electronic installation; even by network connector conduct to mainboard or arround electronic component and electronic installation; just can allow because of abnormally high-voltage this moment network connector internal electronic element or network chip damage; abnormally high-voltage then can connect mainboard when more serious; arround electronic component or electronic installation all damage in the lump; and allow product useful life shorten, even allow the data that store in the computer damage in the lump.

Therefore, manufacturer just is equiped with anti-lightning strike module in network connector, see also shown in Figure 7, it is to be in series with anti-lightning strike chip F between the two circuit E1 of four passage E, on the safety standard of network connector, need the conduction (Line to Line) between the different circuit E1 of test, to confirm whether unusual high electric current can both be removed to letting out in all cases, below for utilizing 40 amperes of (A) electric currents to illustrate as an example, when test Line to Line, the output input pin of anti-lightning strike chip F needs to transmit 40A, and because need to conduct to another circuit E1 by earth connection, the treatment circuit of its anti-lightning strike chip F inside just only has half to operate and process, so treatment circuit needs to process 80A, so under this situation, the cost that anti-lightning strike chip F is set will improve.

And if between the two circuit E1 of four passage E, be in series with two anti-lightning strike chip F, then because shunting, so the output of anti-lightning strike chip F input pin needs to transmit 20A, although the treatment circuit of its anti-lightning strike chip F inside only need be processed 40A, but because four passage E need install eight anti-lightning strike chip F altogether, so under the situation that anti-lightning strike chip F quantity increases, its cost that anti-lightning strike chip F is set also just can't reduce.

Therefore, how to solve existing anti-lightning strike module problem and disappearance with high costs, this is the inventor and the target place of being engaged in this journey improvement that the dealer desires most ardently.

So the creator is because above-mentioned problem and disappearance is to collect related data, via in many ways assessing and considering, and to engage in the many years of experience of the industry accumulation, via constantly studying and revising, begin to design the utility model patent birth of the coupling of this kind network signal and lightning prevention circuit.

Summary of the invention

Main purpose of the present utility model is to be to provide a kind of network signal coupling and lightning prevention circuit, this anti-lightning strike chip is for being electrically connected at respectively two circuit of two different passages with four output input pins, and each passage is for being electrically connected at simultaneously two anti-lightning strike chips, just can allow magnitude setting or the processing upper current limit of anti-lightning strike chip internal TVS internal circuit equivalent layer diode reduce, and anti-lightning strike chip internal circuit also can reduce upper current limit, because arbitrary passage is connected with two anti-lightning strike chips, and wantonly two passages share an anti-lightning strike chip, so four passages only need be installed four anti-lightning strike chips, can allow the chip magnitude setting reduce by half, and only there are again two anti-lightning strike chips to be in idle state in four anti-lightning strike chips, just can have under the effect that prevents the broken by lightning element, reach the purpose that reduces product cost.

Secondary objective of the present utility model is to be to provide a kind of network signal coupling and lightning prevention circuit, this treatment circuit is that the one or more passage with the first link is provided with anti-lightning strike module and coupling module is connected to the second link, the abnormally high-voltage that utilizes the anti-lightning strike chip of anti-lightning strike module to be struck by lightning to produce is got rid of with the first earth terminal transmission ground connection, electric and the coupled signal of recycling coupling module isolation, allow coupling circuit be used in and still have good network signal coupling effect under the high network, and then reach the lifting signal coupling, laser propagation effect and prevent the element of installing or device damage to promote the purpose in useful life.

Another purpose of the present utility model is to be to provide a kind of network signal coupling and lightning prevention circuit, the one or more passage of this first link is provided with anti-lightning strike module, coupling module and anti-electromagnetic interference mould and is connected to the second link group, utilize the inductance of anti-electromagnetic interference module and the harmonic wave of the second capacitive absorption low frequency and high-frequency signal, make signal be transferred to behind the network chip not can to arround element produce electromagnetic interference, and then reach the purpose that promotes stability in use.

In order to achieve the above object, the utility model is by the coupling of a kind of network signal and lightning prevention circuit, its it comprise on the circuit board that is arranged at the tool network chip that and device connected to the network is electrically connected treatment circuit so that signal is processed again, wherein:

This treatment circuit is provided with respectively four passages of tool two circuit, four passage two ends have respectively the first link of interconnection network connector, the second link of interconnection network chip, and four passages that the first link connects are provided with respectively anti-lightning strike module and coupling module is connected to the second link, anti-lightning strike module is provided with operating voltage pin of tool, four anti-lightning strike chips of a ground connection pin and four output input pins, each anti-lightning strike chip is two circuit that are electrically connected at respectively two different passages with four output input pins, and each passage is electrically connected at two output input pins of two anti-lightning strike chips simultaneously, and the ground connection pin of each anti-lightning strike chip is electrically connected to the first earth terminal.

Wherein, this coupling module is provided with respectively the first electric capacity with two circuit of each passage.

Wherein, the anti-lightning strike chip of each of this anti-lightning strike module is electrically connected with silicon reference diode between operating voltage pin and ground connection pin, be parallel with again two Transient Voltage Suppressor internal circuit equivalent layer diodes of four groups with silicon reference diode, and two TVS internal circuit equivalent layer diodes of every group are electrically connected to each output input pin again for being the series connection shape between two TVS internal circuit equivalent layer diodes of each group.

Wherein, each circuit of this four-way connects respectively MD0+ and MX0+, MD0-and MX0-, MD1+ and MX1+, MD1-and MX1-, MD2+ and MX2+, MD2-and MX2-, MD3+ and MX3+, MD3-and MX3-.

Wherein, the one or more passage that this treatment circuit first link connects is provided with respectively anti-lightning strike module, coupling module and anti-electromagnetic interference module and is connected to the second link, its anti-electromagnetic interference module then is provided with respectively inductance with two circuit of one or more passage, be in series with 2 second electric capacity between two circuit of inductance local coupling module one end, between 2 second electric capacity, be electrically connected at the second earth terminal again.

In order to achieve the above object, the utility model also provides the coupling of a kind of network signal and lightning prevention circuit, and it comprises and being arranged on the network connector internal circuit board, and is electrically connected treatment circuit so that signal is coupled with network chip again, wherein:

This treatment circuit is provided with respectively four passages of tool two circuit, four passage two ends have respectively the first link of interconnection network connector, the second link of interconnection network chip, and four passages that the first link connects are provided with respectively anti-lightning strike module and coupling module is connected to the second link, anti-lightning strike module is provided with operating voltage pin of tool, four anti-lightning strike chips of a ground connection pin and four output input pins, each anti-lightning strike chip is for being electrically connected at respectively two circuit of two different passages with four output input pins, and each passage is electrically connected at two output input pins of two anti-lightning strike chips simultaneously, and the ground connection pin of each anti-lightning strike chip is for being electrically connected to the first earth terminal.

Wherein, this coupling module is provided with respectively the first electric capacity with two circuit of each passage.

Wherein, the anti-lightning strike chip of each of this anti-lightning strike module is for being electrically connected with silicon reference diode between operating voltage pin and ground connection pin, be parallel with again two Transient Voltage Suppressor internal circuit equivalent layer diodes of four groups with silicon reference diode, and two TVS internal circuit equivalent layer diodes of every group are electrically connected to each output input pin again for being the series connection shape between two TVS internal circuit equivalent layer diodes of each group.

Wherein, each circuit of this four-way connects respectively MD0+ and MX0+, MD0-and MX0-, MD1+ and MX1+, MD1-and MX1-, MD2+ and MX2+, MD2-and MX2-, MD3+ and MX3+, MD3-and MX3-.

Wherein, the one or more passage that this treatment circuit first link connects is provided with respectively anti-lightning strike module, coupling module and anti-electromagnetic interference module and is connected to the second link, its anti-electromagnetic interference module then is provided with respectively inductance with two circuit of one or more passage, be in series with 2 second electric capacity between two circuit of inductance local coupling module one end, between 2 second electric capacity, be electrically connected at the second earth terminal again.

The utility model is because arbitrary passage is connected with two anti-lightning strike chips, and wantonly two passages share an anti-lightning strike chip, allow magnitude setting reduce by half so only need install four anti-lightning strike chips, can reduce again the anti-lightning strike number of chips that is under the idle state, just can have under the effect that prevents the broken by lightning element, reach the purpose that reduces product cost.

Description of drawings

Fig. 1 is the calcspar of the utility model preferred embodiment.

Fig. 2 is the circuit diagram of the utility model preferred embodiment treatment circuit.

Fig. 3 is the circuit diagram of the anti-lightning strike module of the utility model preferred embodiment.

Fig. 4 is the calcspar of another embodiment of the utility model.

Fig. 5 is the circuit diagram of another embodiment treatment circuit of the utility model.

Fig. 6 is existing stereo appearance figure.

Fig. 7 is existing circuit diagram.

Description of reference numerals: 1, treatment circuit; 10, the first link; 11, the second link; 12, passage; 121, circuit; 13, coupling module; 131, the first electric capacity; 14, anti-lightning strike module; 141, anti-lightning strike chip; 1411, operating voltage pin; 1412, ground connection pin; 1413, output input pin; 1414, silicon reference diode; 1415, Transient Voltage Suppressor internal circuit equivalent layer diode; 142, the first earth terminal; 15, anti-electromagnetic interference module; 151, inductance; 152, the second electric capacity; 153, the second earth terminal; 2, network connector; 3, network chip; 4, circuit board; A, circuit board; B, transformation coil; C, filter coil; D, core; D1, wire; E, passage; E1, circuit; F, anti-lightning strike chip.

Embodiment

For reaching above-mentioned purpose and effect, the technological means that the utility model adopts and structure thereof, hereby drawing illustrates in detail that with regard to preferred embodiment of the present utility model its features and functions is as follows, in order to understand fully.

See also Fig. 1 to shown in Figure 3, find out in the utility model preferred embodiment by knowing shown in the figure, this treatment circuit 1 is arranged on the circuit board 4, and two ends are respectively equipped with and electrically conduct in the first link 10 of network connector 2 and electrically conduct in the second link 11 of network chip 3, its treatment circuit 1 is provided with respectively four passages 12 of tool two circuit 121, four passages 12 that the first link 10 connects are connected to the second link 11 for sequentially being provided with anti-lightning strike module 14 and coupling module 13, coupling module 13 is provided with respectively the first electric capacity 131 with two circuit 121 of each passage 12,14 of anti-lightning strike modules are provided with operating voltage pin 1411 of tool, four anti-lightning strike chips 141 of a ground connection pin 1412 and four output input pins 1413, each anti-lightning strike chip 141 is electrically connected at respectively two circuit 121 of two different passages 12 with four output input pins 1413, and each passage 12 is two circuit 121 that three anti-lightning strike chips 141 all are connected to two adjacent passages 12 for two better connected modes of output input pin 1413(that are electrically connected at simultaneously two anti-lightning strike chips 141, another anti-lightning strike chip 141 is connected to two circuit 121 of first and the 4th passage 12, allow thus circuit reduction), and the ground connection pin 1412 of each anti-lightning strike chip 141 is for being electrically connected to the first earth terminal 142.

This treatment circuit 1 is each terminal that is electrically connected at network connector 2 with the first link 10, and treatment circuit 1 is a plurality of pins that are electrically connected at network chip 3 with the second link 11, each circuit 121 of its four passages 12 connects respectively MD0+ and MX0+, MD0-and MX0-, MD1+ and MX1+, MD1-and MX1-, MD2+ and MX2+, MD2-and MX2-, MD3+ and MX3+, MD3-and MX3-, the visual actual design demand conversion of its position, non-so namely limit to claim of the present invention.

This anti-lightning strike chip 141 is electrically connected with silicon reference diode 1414(Zener diode between operating voltage pin 1411 and ground connection pin 1412), be parallel with again two Transient Voltage Suppressor internal circuit equivalent layer diode 1415(Transient Voltage Suppresser internal circuit equivalent layer diodes of four groups with silicon reference diode 1414; TVS internal circuit equivalent layer diode), and two TVS internal circuit equivalent layer diodes 1415 of every group are the series connection shape, are electrically connected to each output input pin 1413 between two TVS internal circuit equivalent layer diodes 1415 of each group again.

General anti-lightning strike chip just can be processed the abnormally high-voltage of thunderbolt in the mode that is installed in each passage 12, but because the price of general anti-lightning strike chip is high, so the product of this circuit design can't reduce cost, if the circuit design by the anti-lightning strike chip 141 of the present invention, and allow operating voltage pin 1411, ground connection pin 1412 and output input pin 1413 reduce the higher limit of unusual high current delivery, recycle each passage 12 and be electrically connected at two anti-lightning strike chips 141, just can reduce product cost thus, unusual high electric current is to walk earth terminal to conduct to another passage 12 again under the situation of passage 12 but because Line to Line strides, below for utilizing 40 amperes of (A) electric currents to illustrate as an example, if be electrically connected anti-lightning strike chip 141 modes with each passage 12, when all receiving the unusual high electric current of 20 amperes of higher limits such as two output input pins 1413, then because ground connection pin 1412 only can be exported 20 amperes electric current, so the unusual high electric current that will have 20 amperes can't be disposed by anti-lightning strike chip 141 element arround just can having influence on.

So the inventor inputs two circuit 121 that pins 1413 are electrically connected at respectively two different passages 12 by each anti-lightning strike chip 141 for exporting with four, and each passage 12 is for being electrically connected at simultaneously the circuit design of two anti-lightning strike chips 141, allow circuit 121(such as the MX0+ of single channel 12 in the Line to Line test) be struck by lightning when producing 40 amperes unusual high electric current, its unusual high electric current of 40 amperes will branch to the output input pin 1413 of two anti-lightning strike chips 141, allow the output input pin 1413 of two anti-lightning strike chips 141 flow into respectively 20 amperes electric current, conduct to the anti-lightning strike chip 141 that another passage 12 is electrically connected via ground connection pin 1412 and ground path again, flow into again circuit 121(such as the MX0+ of another passage 12), this moment is because each ground connection pin 1412 of flowing through and each output input pin 1413 all only flow through for 20 Ampere currents, anti-lightning strike chip 141 just can not be subject to the restriction of upper current limit value thus, just magnitude setting or the processing upper current limit of inner TVS internal circuit equivalent layer diode 1415 can be reduced, and internal circuit also can reduce upper current limit, because arbitrary passage 12 is connected with two anti-lightning strike chips 141, and wantonly two passages 12 share an anti-lightning strike chip 141, so only need install under the situation of four anti-lightning strike chips 141 at four passages 12, allow the chip magnitude setting reduce by half, reach thus the purpose that reduces product cost.

In addition, because arbitrary passage 12 is connected with two anti-lightning strike chips 141, and wantonly two passages 12 share an anti-lightning strike chip 141, so the unusual high electric current that arbitrary circuit 121 produces in Line to Line test all can be diverted to two anti-lightning strike chips 141, under this situation, only have two anti-lightning strike chips 141 to be in idle situation in four anti-lightning strike chips 141 that four passages 12 are installed, and process part is only arranged in the anti-lightning strike chip 141 of unusual high electric current TVS internal circuit equivalent layer diode 1415 in running, remaining TVS internal circuit equivalent layer diode 1415 just is in idle state, just can reduce thus anti-lightning strike chip 141 quantity that are under the idle state, and then reach the purpose that promotes the chip utilization rate.

See also Fig. 1 to shown in Figure 3, find out in another embodiment of the utility model by knowing shown in the figure, be connected to again the first earth terminal 142 after anti-lightning strike module 14 each anti-lightning strike chip 141 another end also can be connected; Above-mentioned coupling module 13 is for to be called capacitive reactance with the first electric capacity 131 its impedances (Z) that are connected with on the circuit 121, and its unit is ohm (Ω), and the formula of capacitive reactance is:

Ｚ＝1／（2π*ｆ*Ｃ）

F is frequency in the above-mentioned formula, and unit is hertz (Hz); C is the appearance value of electric capacity, unit is farad (F), owing to be to utilize the characteristic of electric capacity to isolate electric and coupled signal, can be learnt by above-mentioned formula, capacitive reactance and operating frequency and capacitor's capacity are inversely proportional to, so under the situation of the first electric capacity 131 that uses identical appearance value and signal frequency increase, its capacitive reactance meeting with reduce, then the decay of signal also can diminish, just can have good network connectivity and signaling rate also can accelerate, since utilized electric capacity under the higher state of frequency its intensity also can with the characteristic of increase, in the situation (greater than 1Gbps) that network (frequency range) is more and more higher now, allow the direct current of electric capacity utilization isolation computer form electric field induction and do signal coupling, and the characteristic of electric capacity also can allow the high frequency network signal coupling effect with raising.

Moreover, see also Fig. 1 to shown in Figure 4, by knowing the circuit board 4 of finding out that this treatment circuit 1 arranges shown in the figure, can directly be provided with network chip 3, a plurality of terminals of device 2 connected to the network are electrically connected again; And the circuit board 4 that treatment circuit 1 arranges also can be arranged at network connector 2 inside, again network connector 2 is electrically connected at the external circuit board, and with the external circuit board on the network chip 3 that arranges form and be electrically connected, its only tool the signal that transmits between network connector 2 and the network chip 3 is coupled and the function of filtering gets final product, yet related network connector 2 and network chip 3 be configured to existing technology, and this thin section consists of non-this case invention main points, hereby repeats no more.

See also Fig. 1 to shown in Figure 5, find out by knowing shown in the figure, one or more passages 12 that this first link 10 connects are for sequentially being provided with anti-lightning strike module 14, coupling module 13 and anti-electromagnetic interference module 15 are connected to the second link 11, its anti-electromagnetic interference module 15 is provided with respectively inductance 151 with two circuit 121 of one or more passage 12, be in series with 2 second electric capacity 152(between two circuit 121 of inductance 151 local coupling modules 13 1 ends and also 2 second electric capacity 152 can be arranged on inductance 151 away from coupling module 13 1 ends), between 2 second electric capacity 152, be electrically connected at again the second earth terminal 153, because have hardly decay via the signal after coupling module 13 processing, so almost therefore original signal transmits toward network chip 3 one ends, so signal can produce the harmonic wave of the larger intensity of tool at low frequency and high frequency treatment, if signal do not decay then again can be on being transferred to mainboard network chip the time, because producing harmonic wave, signal forms radiation and the interference phenomenon that generates an electromagnetic field, allow each electronic component around the network chip or device be interfered and can't normal operation or allow performance reduce, because the harmonic wave of the inductance 151 meeting absorbing high-frequency parts of anti-electromagnetic interference module 15, the second electric capacity 152 in parallel then can absorb the harmonic wave of low frequency part, allow again low frequency harmonic wave partly to branch to the second earth terminal 153, so through the signal after anti-electromagnetic interference module 15 processing, just not having high frequency or low-frequency harmonics produces, after so signal is transferred to network chip 3, just not can to arround element produce electromagnetic interference, and then reach the purpose that promotes stability in use.

Above-mentioned network signal of the present utility model coupling and lightning prevention circuit when reality is used, for can having following advantage, as:

(1) each anti-lightning strike chip 141 is two circuit 121 that are electrically connected at respectively two different passages 12 with four output input pins 1413, and each passage 12 is for being electrically connected at simultaneously two anti-lightning strike chips 141, the abnormally high-voltage that utilizes the anti-lightning strike chip 141 of anti-lightning strike module 14 will be struck by lightning and produce, get rid of with anti-lightning strike chip 141 other the first earth terminal 142 transmission ground connection of side, the magnitude setting of anti-lightning strike chip 141 inner TVS internal circuit equivalent layer diodes 1415 or processing upper current limit reduce, and internal circuit also can reduce upper current limit, because arbitrary passage 12 is connected with two anti-lightning strike chips 141, and wantonly two passages 12 share an anti-lightning strike chip 141, so four passages 12 only need be installed four anti-lightning strike chips 141, just can allow the chip magnitude setting reduce by half, and only there are two anti-lightning strike chips 141 to be in idle state in four anti-lightning strike chips 141, just can have under the effect that prevents the broken by lightning element, reach the purpose that reduces product cost.

(2) this treatment circuit 1 is to be provided with anti-lightning strike module 14 and coupling module 13 is connected to the second link 11 with the one or more passage 12 that the first link 10 connects, recycling coupling module 13 is isolated electric and coupled signal, allow coupling circuit be used in and still have good network signal coupling effect under the high network, and then promote signal coupling and laser propagation effect.

(3) the one or more passage 12 of these first link, 10 connections is provided with anti-lightning strike module 14, coupling module 13 and anti-electromagnetic interference module 15 are connected to the second link 11, utilize inductance 151 and second electric capacity 152 of anti-electromagnetic interference module 15 to come the harmonic wave of signal in low frequency and high frequency part absorbed, have hardly the harmonic wave that the signal of decay produces after allowing coupling module 13 process, absorbed or eliminating by anti-electromagnetic interference module 15, then signal be transferred to behind the network chip 3 not can to arround element produce electromagnetic interference, and then reach the purpose that promotes stability in use.

So; the utility model is mainly for network signal coupling and lightning prevention circuit; electrically conduct in the first link 10 of network connector 2 and electrically conduct in the second link 11 of network chip 3 and can be respectively equipped with in treatment circuit 1 two ends; treatment circuit 1 is provided with respectively four passages 12 of tool two circuit 121; four passages 12 that the first link 10 connects are provided with anti-lightning strike module 14 and coupling module 13 is connected to the second link 11; anti-lightning strike module 14 is provided with operating voltage pin 1411 of tool; four anti-lightning strike chips 141 of a ground connection pin 1412 and four output input pins 1413; each anti-lightning strike chip 141 is for being electrically connected at respectively two circuit 121 of two different passages 12 with four output input pins 1413; and each passage 12 is for being electrically connected at simultaneously two output input pins 1413 of two anti-lightning strike chips 141; and the ground connection pin 1412 of each anti-lightning strike chip 141 is for being electrically connected to the first earth terminal 142; the magnitude setting of anti-lightning strike chip 141 inner TVS internal circuit equivalent layer diodes 1415 or processing upper current limit reduce; and internal circuit also can reduce upper current limit; because arbitrary passage 12 is connected with two anti-lightning strike chips 141; and wantonly two passages 12 share an anti-lightning strike chip 141; so only need install four anti-lightning strike chips 141; just can allow the chip magnitude setting reduce by half; can have under the effect that prevents the broken by lightning element; reaching the purpose that reduces product cost is main key protection point; but; the above only is preferred embodiment of the present utility model; non-so namely limit to claim of the present utility model; so the simple and easy modification and the equivalent structure that such as use the utility model specification and graphic content to do change; all should in like manner be contained in the claim of the present utility model, close and give Chen Ming.

In sum, the above-mentioned network signal coupling of the utility model and lightning prevention circuit for really reaching its effect and purpose, so the utility model really is the utility model of a practicality excellence, for meeting the application important document of new patent, are filed an application when using in accordance with the law.

Claims (10)

1. network signal coupling and lightning prevention circuit is characterized in that, it comprises on the circuit board that is arranged at the tool network chip, and device connected to the network is electrically connected treatment circuit so that signal is processed again, wherein:

This treatment circuit is provided with respectively four passages of tool two circuit, four passage two ends have respectively the first link of interconnection network connector, the second link of interconnection network chip, and four passages that the first link connects are provided with respectively anti-lightning strike module and coupling module is connected to the second link, anti-lightning strike module is provided with operating voltage pin of tool, four anti-lightning strike chips of a ground connection pin and four output input pins, each anti-lightning strike chip is two circuit that are electrically connected at respectively two different passages with four output input pins, and each passage is electrically connected at two output input pins of two anti-lightning strike chips simultaneously, and the ground connection pin of each anti-lightning strike chip is electrically connected to the first earth terminal.

2. network signal coupling according to claim 1 and lightning prevention circuit is characterized in that this coupling module is provided with respectively the first electric capacity with two circuit of each passage.

3. network signal according to claim 1 is coupled and lightning prevention circuit, it is characterized in that, the anti-lightning strike chip of each of this anti-lightning strike module is electrically connected with silicon reference diode between operating voltage pin and ground connection pin, be parallel with again two Transient Voltage Suppressor internal circuit equivalent layer diodes of four groups with silicon reference diode, and two TVS internal circuit equivalent layer diodes of every group are electrically connected to each output input pin again for being the series connection shape between two TVS internal circuit equivalent layer diodes of each group.

4. network signal according to claim 1 is coupled and lightning prevention circuit, it is characterized in that each circuit of this four-way connects respectively MD0+ and MX0+, MD0-and MX0-, MD1+ and MX1+, MD1-and MX1-, MD2+ and MX2+, MD2-and MX2-, MD3+ and MX3+, MD3-and MX3-.

5. network signal according to claim 1 is coupled and lightning prevention circuit, it is characterized in that, the one or more passage that this treatment circuit first link connects is provided with respectively anti-lightning strike module, coupling module and anti-electromagnetic interference module and is connected to the second link, its anti-electromagnetic interference module then is provided with respectively inductance with two circuit of one or more passage, be in series with 2 second electric capacity between two circuit of inductance local coupling module one end, between 2 second electric capacity, be electrically connected at the second earth terminal again.

6. network signal coupling and lightning prevention circuit is characterized in that, it comprises and being arranged on the network connector internal circuit board, and are electrically connected treatment circuit so that signal is coupled with network chip again, wherein:

This treatment circuit is provided with respectively four passages of tool two circuit, four passage two ends have respectively the first link of interconnection network connector, the second link of interconnection network chip, and four passages that the first link connects are provided with respectively anti-lightning strike module and coupling module is connected to the second link, anti-lightning strike module is provided with operating voltage pin of tool, four anti-lightning strike chips of a ground connection pin and four output input pins, each anti-lightning strike chip is for being electrically connected at respectively two circuit of two different passages with four output input pins, and each passage is electrically connected at two output input pins of two anti-lightning strike chips simultaneously, and the ground connection pin of each anti-lightning strike chip is for being electrically connected to the first earth terminal.

7. network signal coupling according to claim 6 and lightning prevention circuit is characterized in that this coupling module is provided with respectively the first electric capacity with two circuit of each passage.

8. network signal according to claim 6 is coupled and lightning prevention circuit, it is characterized in that, the anti-lightning strike chip of each of this anti-lightning strike module is for being electrically connected with silicon reference diode between operating voltage pin and ground connection pin, be parallel with again two Transient Voltage Suppressor internal circuit equivalent layer diodes of four groups with silicon reference diode, and two TVS internal circuit equivalent layer diodes of every group are electrically connected to each output input pin again for being the series connection shape between two TVS internal circuit equivalent layer diodes of each group.

9. network signal according to claim 6 is coupled and lightning prevention circuit, it is characterized in that each circuit of this four-way connects respectively MD0+ and MX0+, MD0-and MX0-, MD1+ and MX1+, MD1-and MX1-, MD2+ and MX2+, MD2-and MX2-, MD3+ and MX3+, MD3-and MX3-.

10. network signal according to claim 6 is coupled and lightning prevention circuit, it is characterized in that, the one or more passage that this treatment circuit first link connects is provided with respectively anti-lightning strike module, coupling module and anti-electromagnetic interference module and is connected to the second link, its anti-electromagnetic interference module then is provided with respectively inductance with two circuit of one or more passage, be in series with 2 second electric capacity between two circuit of inductance local coupling module one end, between 2 second electric capacity, be electrically connected at the second earth terminal again.

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