CN206135405U - PoE prevents surging protection circuit structure for connector - Google Patents
PoE prevents surging protection circuit structure for connector Download PDFInfo
- Publication number
- CN206135405U CN206135405U CN201621039596.7U CN201621039596U CN206135405U CN 206135405 U CN206135405 U CN 206135405U CN 201621039596 U CN201621039596 U CN 201621039596U CN 206135405 U CN206135405 U CN 206135405U
- Authority
- CN
- China
- Prior art keywords
- transformator
- electric capacity
- resistance
- bilateral diode
- surging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model discloses a poE prevents surging protection circuit structure for connector, including filter module, signal input part, signal output part, network power, RC circuit, firstly prevent that surging protection subassembly and second prevent surging protection subassembly, this first protection surging subassembly is including bilateral diode TVS1 and bilateral diode TVS2, the primary's of first transformer the centre tapping and the positive pole of network power are connected to this bilateral diode TVS1's one end, the second transformer's primary's the centre tapping and the negative pole of network power are connected to bilateral diode TVS1's the other end, the second transformer's primary's the centre tapping and the negative pole of network power are connected to this bilateral diode TVS2's one end, bilateral diode TVS2's other end ground connection. By this, through constitute first protection surging subassembly by bilateral diode TVS1 and bilateral diode TVS2, through the test, the utility model discloses circuit network power 40 when the test lasts the power supply to 10700 mu s 4KV of surging can be protected, thereby the convenience is brought for the use.
Description
Technical field
This utility model is related to connector circuit art, refers in particular to a kind of PoE surge preventions protection of adapter
Line construction.
Background technology
RJ45 adapters possess two ports, one end connected with network cable (Cable Side), other end connection mainboard (PHY
Side) realize that network signal is transmitted, such as PC computers, server RJ45 adapter applications, i.e. PHY Side are directly turned on
Connected Cable Side increase Isolation Transformer And Common between PHY Side and Cable Side
Mode choke groups complete signal transmission.
RJ45 adapters with PoE functions provide unidirectional current, the such as networking telephone, the POS simultaneously in transmission network signal
Deng RJ45 PoE applications, i.e. PHY Side and Cable Side are in Isolation Transformer And Common mode
Choke groups complete signal transmission and are provided simultaneously with one or more groups of passage PHY Side and Cable Side directly to turn on transmission direct current
Electricity.
Surging invasion is subject to because RJ45 Cable Side need to be connected to by outdoor for netting twine, such as thunderbolt surging is drawn by netting twine
If not increasing surging protection to RJ45 Cable Side RJ45 adapters, incoming PHY Side are invaded computer motherboard by surging
And damage computer motherboard.RJ45 surge preventions typically can increase guard assembly in Cable Side and PHY Side, when surging enters
Surging is conducted to being connected to ground grounding components iron-clad (GND) and protects what is be connected with RJ45 PHY Side by guard assembly when invading
Mainboard, realizes that surging is protected.RJ45 PoE surge preventions adapters need to protect PoE passages while guard signal transmission channel,
When surging is invaded, surging is conducted to being connected to ground grounding components iron-clad (GND) and protects the mainboard that is connected with RJ45 by guard assembly
PHY Side Module and PoE Side Module, realize that PoE circuits surging is protected.
However, currently used for circuit its guard assembly that adopts for realizing that surging is protected for multiple normal open switch, this side
Formula when causing in surging persistent state, network electric power VC+ and VC- constitute closed-loop path because guard assembly and GND are turned on and
Short circuit, so as to cause PoE to power stopping, to using making troubles.
Utility model content
In view of this, this utility model is directed to the disappearance of prior art presence, and its main purpose is to provide a kind of adapter
PoE surge prevention protection circuit structures, the existing PoE surge preventions protection circuit of its energy effectively solving is in surging persistent state
PoE is caused to power the problem of stopping.
For achieving the above object, this utility model is using such as purgation technical scheme：
A kind of PoE surge prevention protection circuit structures of adapter, include filtration module, signal input part, signal defeated
Go out end, network electric power, RC circuits, the first surge prevention protection component and the second surge prevention protection component；The filtration module has
Be connected in parallel to each other the first transformator, the second transformator, the 3rd transformator and the 4th transformator of setting；The signal input part connection filter
The input side of ripple module, signal output part connects the outlet side of filtration module；The RC circuit grounds and connect the first transformator,
The centre tap of the primary coil of two transformators, the 3rd transformator and the 4th transformator；The first protection surging component is included
One end of bilateral diode TVS1 and bilateral diode TVS2, bilateral diode TVS1 connects the primary coil of the first transformator
Centre tap and network electric power positive pole, the other end of bilateral diode TVS1 connects in the primary coil of the second transformator
Between tap and network electric power negative pole, one end of bilateral diode TVS2 connects the centre of the primary coil of the second transformator and takes out
The negative pole of head and network electric power, the other end ground connection of bilateral diode TVS2.
Used as a kind of preferred version, the second protection surging component is included can breakover element S1 and can breakover element
S2, this can breakover element S1 one end connect the 3rd transformator primary coil centre tap, can breakover element S1 it is another
End ground connection, this can breakover element S2 one end connect the 4th transformator primary coil centre tap, can breakover element S2
The other end is grounded.
As a kind of preferred version, the RC circuits include resistance R1, resistance R2, resistance R3, resistance R4, electric capacity C0,
Electric capacity C1, electric capacity C2, electric capacity C3 and electric capacity C4, one end of electric capacity C1, electric capacity C2, electric capacity C3 and electric capacity C4 connects respectively first
The centre tap of the primary coil of transformator, the second transformator, the 3rd transformator and the 4th transformator, electric capacity C1, electric capacity C2, electricity
The other end for holding C3 and electric capacity C4 connects respectively one end of resistance R1, resistance R2, resistance R3 and resistance R4, resistance R1, resistance R2,
The other end of resistance R3 and resistance R4 is all connected with one end of electric capacity C0, the other end ground connection of electric capacity C0.
This utility model has compared with prior art clear advantage and beneficial effect, specifically, by above-mentioned technology
Scheme understands：
By being made up of the first protection surging component bilateral diode TVS1 and bilateral diode TVS2, introduced by netting twine
When surging is invaded, the bilateral diode TVS1 in the first protection surging component 60 maintains the VC+/VC- electric potential differences of network electric power 40
And DC power transmission is maintained, and bilateral diode TVS2 becomes the VC+/VC- of network electric power 40 and the first transformator 11 and second
The surging of the signal channel of depressor 12 is conducted to ground, and the second protection surging component 70 connects in the conducting of surging intrusion response with GND
Connect, the surging of the 3rd transformator 13 and the signal channel of the 4th transformator 14 is conducted to ground, by the first protection surging group
The protection surging of part 60 and second component 70 completes the protection of RJ45 adapter PoE surge preventions.Jing is tested, and this utility model circuit exists
The continued power of network electric power 40 during test, and the μ s 4KV of surging 10/700 can be protected, so as to using bringing convenience.
More clearly to illustrate architectural feature of the present utility model and effect, come right with specific embodiment below in conjunction with the accompanying drawings
This utility model is described in detail.
Description of the drawings
Fig. 1 is the structural representation of the preferred embodiment of this utility model；
Fig. 2 be this utility model preferred embodiment in non-surge invade when view；
Fig. 3 be this utility model preferred embodiment in view when having surging to invade.
Accompanying drawing identifier declaration：
10th, filtration module 11, the first transformator
12nd, the second transformator 13, the 3rd transformator
14th, the 4th transformator 20, signal input part
30th, signal output part 40, network electric power
50th, RC circuits 60, the first surge prevention protection component
70th, the second surge prevention protection component.
Specific embodiment
Refer to shown in Fig. 1 to Fig. 3, that show the concrete structure of the preferred embodiment of this utility model, include
Filtration module 10, signal input part 20, signal output part 30, network electric power 40, RC circuits 50, the first surge prevention protection component 60
And second surge prevention protection component 70.
The filtration module 10 has the first transformator 11, the second transformator 12, the 3rd transformator 13 of the setting that is connected in parallel to each other
With the 4th transformator 14；The signal input part 20 connects the input side of filtration module 10, the connection filtration module of signal output part 30
10 outlet side.
The RC circuits 50 are grounded（GND）And connect the first transformator 11, the second transformator 12, the 3rd transformator 13 and the 4th
The centre tap of the primary coil of transformator 14；Specifically, the RC circuits 50 include resistance R1, resistance R2, resistance R3,
Resistance R4, electric capacity C0, electric capacity C1, electric capacity C2, electric capacity C3 and electric capacity C4, the one of electric capacity C1, electric capacity C2, electric capacity C3 and electric capacity C4
End connects respectively the centre tap of the primary coil of the first transformator, the second transformator, the 3rd transformator and the 4th transformator, electricity
Hold one end that C1, electric capacity C2, the other end of electric capacity C3 and electric capacity C4 connect respectively resistance R1, resistance R2, resistance R3 and resistance R4,
The other end of resistance R1, resistance R2, resistance R3 and resistance R4 is all connected with one end of electric capacity C0, the other end ground connection of electric capacity C0.
The first protection surging component 60 includes bilateral diode TVS1 and bilateral diode TVS2, the bilateral diode
One end of TVS1 connects the centre tap and the positive pole VC+ of network electric power 40 of the primary coil of the first transformator 11, two-way two pole
The other end of pipe TVS1 connects the centre tap and the negative pole of network electric power VC- of the primary coil of the second transformator 12, and this is two-way
One end of diode TVS2 connects the centre tap and the negative pole VC- of network electric power 40 of the primary coil of the second transformator 12, double
It is grounded to the other end of diode TVS2.
The second protection surging component 70 include can breakover element S1 and can breakover element S2, this can breakover element S1
One end connect the 3rd transformator 13 primary coil centre tap, can breakover element S1 the other end ground connection, this can turn on unit
One end of part S2 connects the centre tap of the primary coil of the 4th transformator 14, can breakover element S2 other end ground connection.
Bilateral diode TVS1 dimensions when using, when the surging introduced by netting twine is invaded, in the first protection surging component 60
Hold the VC+/VC- electric potential differences of network electric power 40 and maintain DC power transmission, and bilateral diode TVS2 is by the VC of network electric power 40
The surging of +/VC- and the first transformator 11 and the signal channel of the second transformator 12 is conducted to ground, the second protection surging component
70 are connected in the conducting of surging intrusion response with GND, by the 3rd transformator 13 and the surging of the signal channel of the 4th transformator 14
Conduct to ground, complete RJ45 adapter PoE surge preventions and protect by the first protection surging component 60 and the second protection surging component 70
Shield.Jing is tested, this utility model circuit continued power of network electric power 40 in test, and can protect the μ s 4KV of surging 10/700.
When non-surge is invaded, as shown in Fig. 2 being connected in parallel on the positive pole VC+ of network electric power 40 and the negative pole of network electric power 40
Bilateral diode TVS1 between VC- and the opposite in phase of network electric power 40, because the principle that bilateral diode reversely ends keeps network
The positive pole VC+ of power supply 40 and the negative pole VC- of network electric power 40 are not turned on and the unidirectional current normal transmission of network electric power 40, connect network
The bilateral diode TVS2 of the negative pole VC- and GND of power supply 40 and negative pole VC- and GND (0V) opposite in phase of network electric power 40, make
The negative pole VC- and GND of network electric power 40 is not turned on, and the DC power transmission of network electric power 40 of RJ45 adapters does not affect normal work
Make.
When surging invasion, as shown in figure 3, being connected in parallel between the positive pole VC+ of network electric power 40 and the negative pole VC- of network electric power 40
Bilateral diode TVS1 and the same phase of network electric power 40, the positive pole of network electric power 40 is maintained because of bilateral diode stabilizing voltage characteristic
Unidirectional current maintains transmission between the negative pole VC- of VC+ and network electric power 40, connects two-way two between the negative pole VC- and GND of network electric power 40
Pole pipe TVS2 is identical with negative pole VC- and GND (0V) phase place of network electric power 40, according to bilateral diode forward conduction principle, will
High pressure is conducted to ground, completes the protection of network electric power passage surging, so as to complete the mainboard network electric power 40 that is connected to RJ45 adapters
Protection.
The above, is only preferred embodiment of the present utility model, and not technical scope of the present utility model is made
Any restriction, therefore every above example is made any trickle amendment, equivalent change according to technical spirit of the present utility model
Change and modification, still fall within the range of technical solutions of the utility model.
Claims (3)
1. a kind of PoE surge prevention protection circuit structures of adapter, include filtration module, signal input part, signal output
End, network electric power, RC circuits, the first surge prevention protection component and the second surge prevention protection component；The filtration module has that
The first transformator, the second transformator, the 3rd transformator and the 4th transformator that this is arranged in parallel；The signal input part connection filtering
The input side of module, signal output part connects the outlet side of filtration module；The RC circuit grounds and connect the first transformator, second
The centre tap of the primary coil of transformator, the 3rd transformator and the 4th transformator；It is characterized in that：
The first protection surging component includes bilateral diode TVS1 and bilateral diode TVS2, bilateral diode TVS1's
One end connects the centre tap and the positive pole of network electric power of the primary coil of the first transformator, the other end of bilateral diode TVS1
Connect the centre tap of the primary coil of the second transformator and the negative pole of network electric power, one end connection of bilateral diode TVS2
The centre tap of the primary coil of the second transformator and the negative pole of network electric power, the other end ground connection of bilateral diode TVS2.
2. PoE surge prevention protection circuit structures of adapter according to claim 1, it is characterised in that：Described second
Protection surging component include can breakover element S1 and can breakover element S2, this can breakover element S1 one end connect the 3rd transformation
The centre tap of the primary coil of device, can breakover element S1 the other end ground connection, this can breakover element S2 one end connection the 4th
The centre tap of the primary coil of transformator, can breakover element S2 the other end ground connection.
3. PoE surge prevention protection circuit structures of adapter according to claim 1, it is characterised in that：The RC is electric
Road includes resistance R1, resistance R2, resistance R3, resistance R4, electric capacity C0, electric capacity C1, electric capacity C2, electric capacity C3 and electric capacity C4, the electricity
Hold C1, electric capacity C2, one end of electric capacity C3 and electric capacity C4 and connect the first transformator, the second transformator, the 3rd transformator and the respectively
The centre tap of the primary coil of four transformators, the other end of electric capacity C1, electric capacity C2, electric capacity C3 and electric capacity C4 connects respectively resistance
One end of R1, resistance R2, resistance R3 and resistance R4, the other end of resistance R1, resistance R2, resistance R3 and resistance R4 is all connected with electric capacity
One end of C0, the other end ground connection of electric capacity C0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621039596.7U CN206135405U (en) | 2016-09-06 | 2016-09-06 | PoE prevents surging protection circuit structure for connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621039596.7U CN206135405U (en) | 2016-09-06 | 2016-09-06 | PoE prevents surging protection circuit structure for connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206135405U true CN206135405U (en) | 2017-04-26 |
Family
ID=58568509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621039596.7U Active CN206135405U (en) | 2016-09-06 | 2016-09-06 | PoE prevents surging protection circuit structure for connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206135405U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110581540A (en) * | 2018-06-08 | 2019-12-17 | 华为技术有限公司 | power supply equipment and power over Ethernet system |
-
2016
- 2016-09-06 CN CN201621039596.7U patent/CN206135405U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110581540A (en) * | 2018-06-08 | 2019-12-17 | 华为技术有限公司 | power supply equipment and power over Ethernet system |
| US11183838B2 (en) | 2018-06-08 | 2021-11-23 | Huawei Technologies Co., Ltd. | Power sourcing equipment and power over ethernet system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102185698B (en) | Ethernet power supply port protective circuit and ethernet power supply equipment | |
| CN202009229U (en) | Ethernet feed port group, anti-surge protection circuit and Ethernet feed equipment | |
| CN102708823B (en) | Automatic switching circuit for RS232 interface and RS485 interface and serial port liquid crystal display module | |
| CN101488666B (en) | Network port lightning preventing circuit and RJ45 interface apparatus thereof | |
| CN105959063A (en) | Electrical port module | |
| CN102842903A (en) | Power over Ethernet system and surge protection device thereof | |
| CN206135405U (en) | PoE prevents surging protection circuit structure for connector | |
| CN106021166B (en) | Multi-host communication circuit based on RS485 bus | |
| CN101162840A (en) | Interface protective circuit | |
| CN205921378U (en) | Surge protection device | |
| CN104953575A (en) | Special lightning protection device for highway entrance/exit | |
| CN206461349U (en) | PoE surge prevention protection circuits | |
| CN206224464U (en) | A kind of communicator with antijamming capability | |
| CN104934957A (en) | POE switch lightning protection circuit | |
| CN205829157U (en) | A kind of PSE power circuit with secondary side surge protection | |
| CN110011290B (en) | Ethernet interface anti-surge circuit | |
| CN210324194U (en) | Communication interface magnetic coupling isolation protection circuit | |
| CN206135393U (en) | Prevent surging protection circuit | |
| CN204118722U (en) | A kind of three grades of lightning-protection modules of network interface protection | |
| CN207910462U (en) | Temperature measuring gauge RS485 communications protection circuits | |
| CN207853914U (en) | PoE equipment without network transformer | |
| CN201146383Y (en) | Multiple in one surge protective machine | |
| CN106100128A (en) | Active power distribution network intelligent terminal's accumulator isolation monitoring device | |
| CN105958458A (en) | Three-phase power signal sharing surge protector | |
| CN206461184U (en) | A kind of POE wiring wrong protection circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |