CN202798610U - Filter circuit and electric connector using filter circuit - Google Patents
Filter circuit and electric connector using filter circuit Download PDFInfo
- Publication number
- CN202798610U CN202798610U CN 201220379186 CN201220379186U CN202798610U CN 202798610 U CN202798610 U CN 202798610U CN 201220379186 CN201220379186 CN 201220379186 CN 201220379186 U CN201220379186 U CN 201220379186U CN 202798610 U CN202798610 U CN 202798610U
- Authority
- CN
- China
- Prior art keywords
- resistance
- piezo
- coil
- common mode
- filter circuit
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
The utility model discloses a filer circuit and an electric connector using the filter circuit. The filter circuit (100) used for transmitting a network signal comprises a first side (10) and a second side (20) for a full duplex transmission, and a transformer (1), a common mode choke (2) and a voltage dependent resistor (3) which are connected between the two sides, wherein a central tap (112) of the transformer is serially connected with the voltage dependent resistor and is directly grounded. Because of a capacitance effect and a performance of high-voltage conductance of the voltage dependent resistor, the high-voltage capacitance in the filter circuit is saved, and beneficial effects of filtering, lightning protection and production cost conservation can be achieved.
Description
[technical field]
The utility model relates to a kind of filter circuit and uses the electric connector of filter circuit, relates in particular to filter circuit and networking electric connector for the network signal transmission.
[background technology]
Prior art please refer to Chinese patent application specification CN102222894A, CN102290681A and TaiWan, China patent specification TWM396531 (U).
Chinese patent application specification CN102222894A discloses a kind of filter circuit for the network signal transmission and has used the electric connector of this filter circuit, described filter circuit has the first side and second side of full duplex transmission, be connected in transformer and common mode choke between these both sides, earth point, and pressure cell, transformer comprises the first coil and the second coil that intercouples, the first coil is provided with two outer ends and the centre cap between two outer ends that is connected to the first side, one end of pressure cell is connected to the centre cap of the first coil, the other end of pressure cell is connected to earth point, wherein pressure cell and an electric capacity and connect rear ground connection.Pressure cell plays the effect that the overvoltage of surge or thunderbolt generation is imported earth point.
Among the Chinese patent application specification CN102222894A, because the existence of the capacitive branch of pressure cell parallel connection, if thunderbolt unshielded twisted pair (UTP) because the high pressure resistant of electric capacity can only be born about 2.5KV, will certainly burn out electric capacity.If thunderbolt produces surging of 6KV, so can there be potential safety hazard in filter circuit.
[utility model content]
The purpose of this utility model is to provide a kind of filter circuit that is applied to connector, saves manufacturing cost when it reaches lightning protection effect.
For achieving the above object, the utility model provides kind of an a kind of filter circuit for the network signal transmission, it has the first side and second side of full duplex transmission, be connected in the transformer between these both sides, common mode choke, piezo-resistance and earth point, transformer comprises the first coil and the second coil that intercouples, the first coil is provided with two outer ends that are connected to the first side and the centre cap between two outer ends, the second coil is connected to the second side after being connected to common mode choke, the centre cap of described the first coil only is connected to earth point by piezo-resistance, the centre cap of described the first coil, piezo-resistance and earth point are connected successively.
With respect to prior art, the utility model is owing to omitted capacitor with ground connection after piezo-resistance is in parallel between the centre cap of described earth point and the first coil.Piezo-resistance has withstand voltage premium properties to 6KV, and just can conducting about 300V, and energy will be surged and is released into earth terminal.So the utility model can have better lightning protection surplus design.In addition, piezo-resistance itself has the electric capacity (can select different capacitances) of about 500pf, and the filter action that can also realize omitting thus electric capacity is so when reducing production costs, can also guarantee original filter effect.
For achieving the above object, the utility model provides a kind of electric connector, comprise insulating body, be used for the shield shell of ground connection and be contained in the interior filter module of insulating body, this filter module comprises transformer, common mode choke, the circuit board of piezo-resistance and carrying and connection aforementioned components, described transformer has one and is electrically connected to the centre cap that is electrically connected to shield shell after the piezo-resistance, described circuit board is provided with the earth point that links to each other with shield shell, described centre cap only is electrically connected to earth point by piezo-resistance, described centre cap, piezo-resistance and earth point are connected successively.
With respect to prior art, electric connector of the present utility model can have better lightning protection surplus design, has reduced production cost.
[description of drawings]
Fig. 1 is the circuit diagram that meets the filter circuit of the utility model the first embodiment.
Fig. 2 is the circuit diagram that meets the filter circuit of the utility model the second embodiment.
Fig. 3 is the disassembly diagram that uses the electric connector of filter circuit shown in Figure 1.
Fig. 4 is the stereogram of filter circuit plate module in the electric connector shown in Figure 3.
Fig. 5 is the stereogram at another visual angle of circuit board module shown in Figure 4.
[main element symbol description]
| Transformer | 1、701 | The |
10 |
| |
100、200 | The |
11 |
| The |
111、121 | Centre |
112、122 |
| The |
12 | |
2、702 |
| The |
20 | |
201 |
| |
222 | Piezo- |
3、703 |
| Earth |
4、71 | Conventional, electric- |
5、705 |
| Insulating body | 50 | Shield shell | 60 |
| Extendible flake | 601 | Filter module | 70 |
| |
704 | ? | ? |
Following embodiment further specifies the utility model in connection with above-mentioned accompanying drawing.
[embodiment]
See also shown in Figure 1ly, meet the filter circuit 100 of the first embodiment of the present utility model, this filter circuit is used for the network signal transmission.Filter circuit 100 have full duplex transmission the first side 10 and the second side 20, be connected in transformer 1 and common mode choke 2, piezo-resistance 3 and earth point 4 between these both sides.
Transformer 1 comprises that the first coil 11 and the second coil 12, the first coils 11 that intercouple are provided with two outer ends 111 and the centre cap 112 between two outer ends that is connected to the first side 10.The centre cap 112 of described the first coil 11 only is connected to earth point 4 by piezo-resistance 3, and the centre cap 112 of the first coil 11, piezo-resistance 3 and earth point 4 are connected successively as shown in FIG..The second coil 12 is connected to the second side 20 after being connected to common mode choke 2.Common mode choke 2 is three line common mode chokes, and described the second coil 12 has two outer ends 121 and a centre cap 122 that is connected respectively with three line common mode chokes 2.Described the second side 20 is provided with DC power supply 201, three line common mode chokes 2 and comprises the intermediate coil 222 that is connected with the centre cap 122 of the second coil 12, and these intermediate coil 222 other ends are connected in DC power supply 201.
Described filter circuit 100 comprises that four common mode chokes 2 of four transformers 1 and therewith corresponding connection in order to form four transmission channels, are connected to piezo-resistance 3 after four centre cap 112 parallel connections of four the first coils 11 of described four transformers 1.
See also shown in Figure 2, the filter circuit 200 that meets the second embodiment of the present utility model, the layout of this filter circuit 200 and the first embodiment is basic identical, its difference only is also to be connected with conventional, electric-resistance 5 between the centre cap 112 of described the first coil 11 and the piezo-resistance 3, and the centre cap 112 of described the first coil 11, conventional, electric-resistance 5, piezo-resistance 3 and earth point 4 are connected successively.Compare the first embodiment, after the second embodiment increased by 750 ohm conventional, electric-resistance 5, the test of surging was easily burnt conventional, electric-resistance 5, but has better filter effect in low-frequency range.
See also shown in Fig. 3-5, utilize the electric connector of filter circuit 200, comprise insulating body 50, be used for the shield shell 60 of ground connection and be contained in the interior filter module 70 of insulating body that this filter module 70 comprises transformer 701, common mode choke 702, piezo-resistance 703 and carrying and is communicated with the circuit board 704 of aforementioned components.
Described common mode choke 702 is three line common mode chokes.Described transformer 701 has one and is electrically connected to the centre cap that is electrically connected to shield shell 60 after the piezo-resistance 703, and described circuit board 704 is provided with the earth point 71 that links to each other with shield shell 60.Described centre cap only is electrically connected to earth point 71 by piezo-resistance 703, and described centre cap, piezo-resistance 703 and earth point 71 are connected successively.Also be provided with four conventional, electric-resistance 705 on the described circuit board 704, these four conventional, electric-resistance 705 and piezo-resistance 703 are arranged at the same side of circuit board 704, and transformer 701 and common mode choke 702 are arranged at the opposite side of circuit board 704.Described piezo-resistance 703 and earth point 71 are connected by conductive path, and described conventional, electric-resistance 705 also is connected by conductive path with piezo-resistance 703.Described earth point 71 is the conducting strip on the circuit board, and described shield shell 60 is provided with to the extended Extendible flake 601 of circuit board, and this Extendible flake and conducting strip are electrically connected.
Claims (10)
1. one kind is used for the filter circuit that network signal transmits, it has the first side and second side of full duplex transmission, be connected in the transformer between these both sides, common mode choke, piezo-resistance and earth point, transformer comprises the first coil and the second coil that intercouples, the first coil is provided with two outer ends that are connected to the first side and the centre cap between two outer ends, the second coil is connected to the second side after being connected to common mode choke, it is characterized in that: the centre cap of described the first coil only is connected to earth point by piezo-resistance, the centre cap of described the first coil, piezo-resistance and earth point are connected successively.
2. filter circuit as claimed in claim 1, it is characterized in that: described filter circuit also comprises conventional, electric-resistance, the centre cap of described the first coil, conventional, electric-resistance, piezo-resistance and earth point are connected successively.
3. filter circuit as claimed in claim 1, it is characterized in that: described common mode choke is three line common mode chokes, described the second coil has two outer ends and a centre cap that is connected respectively with three line common mode chokes.
4. filter circuit as claimed in claim 3, it is characterized in that: described the second side is provided with DC power supply, and described three line common mode chokes comprise the intermediate coil that is connected with the centre cap of the second coil, and this intermediate coil other end is connected in DC power supply.
5. filter circuit as claimed in claim 1, it is characterized in that: described filter circuit comprises that four common mode chokes of four transformers and therewith corresponding connection are in order to form four transmission channels, the ground connection of connecting with piezo-resistance again after four centre cap parallel connections of four the first coils of described four transformers.
6. electric connector that uses the described filter circuit of claim 1, comprise insulating body, be used for the shield shell of ground connection and be contained in the interior filter module of insulating body, this filter module comprises transformer, common mode choke, the circuit board of piezo-resistance and carrying and connection aforementioned components, described transformer has one and is electrically connected to the centre cap that is electrically connected to shield shell after the piezo-resistance, it is characterized in that: described circuit board is provided with the earth point that links to each other with shield shell, described centre cap only is electrically connected to earth point by piezo-resistance, described centre cap, piezo-resistance and earth point are connected successively.
7. electric connector as claimed in claim 6, it is characterized in that: described earth point is the conducting strip on the circuit board, and described shield shell is provided with to the extended Extendible flake of circuit board, and this Extendible flake and conducting strip are electrically connected.
8. electric connector as claimed in claim 6, it is characterized in that: described common mode choke is three line common mode chokes.
9. electric connector as claimed in claim 6, it is characterized in that: be provided with four conventional, electric-resistance on the described circuit board, these four conventional, electric-resistance and piezo-resistance are arranged at the same side of circuit board, and transformer and common mode choke are arranged at the opposite side of circuit board.
10. electric connector as claimed in claim 7, it is characterized in that: described piezo-resistance is connected by conductive path with earth point, and described conventional, electric-resistance also is connected by conductive path with piezo-resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220379186 CN202798610U (en) | 2012-08-02 | 2012-08-02 | Filter circuit and electric connector using filter circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220379186 CN202798610U (en) | 2012-08-02 | 2012-08-02 | Filter circuit and electric connector using filter circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202798610U true CN202798610U (en) | 2013-03-13 |
Family
ID=47825779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220379186 Expired - Lifetime CN202798610U (en) | 2012-08-02 | 2012-08-02 | Filter circuit and electric connector using filter circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202798610U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106160696A (en) * | 2015-04-03 | 2016-11-23 | 富士康(昆山)电脑接插件有限公司 | Network filtering module and manufacture method thereof |
| CN106208999A (en) * | 2015-04-29 | 2016-12-07 | 富士康(昆山)电脑接插件有限公司 | Network filtering module and manufacture method thereof |
| CN108539533A (en) * | 2017-03-03 | 2018-09-14 | 富士康(昆山)电脑接插件有限公司 | Network connector |
| CN110690975A (en) * | 2019-10-08 | 2020-01-14 | 四川经纬达科技集团有限公司 | Network transformer transmission circuit and system |
| CN114586247A (en) * | 2019-09-06 | 2022-06-03 | 模拟电力转换有限责任公司 | Transient noise reduction filtering system |
-
2012
- 2012-08-02 CN CN 201220379186 patent/CN202798610U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106160696A (en) * | 2015-04-03 | 2016-11-23 | 富士康(昆山)电脑接插件有限公司 | Network filtering module and manufacture method thereof |
| CN106208999A (en) * | 2015-04-29 | 2016-12-07 | 富士康(昆山)电脑接插件有限公司 | Network filtering module and manufacture method thereof |
| CN106208999B (en) * | 2015-04-29 | 2018-12-11 | 富士康(昆山)电脑接插件有限公司 | Network filtering mould group and its manufacturing method |
| CN108539533A (en) * | 2017-03-03 | 2018-09-14 | 富士康(昆山)电脑接插件有限公司 | Network connector |
| CN114586247A (en) * | 2019-09-06 | 2022-06-03 | 模拟电力转换有限责任公司 | Transient noise reduction filtering system |
| CN110690975A (en) * | 2019-10-08 | 2020-01-14 | 四川经纬达科技集团有限公司 | Network transformer transmission circuit and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202798610U (en) | Filter circuit and electric connector using filter circuit | |
| CN104104350A (en) | Filtering circuit and electric connector | |
| CN204697025U (en) | Network signal filter circuit and apply the network connector of this circuit | |
| CN106340761B (en) | Network interface circuit and apply its network interface connector | |
| CN203456870U (en) | Anti-surge filter circuit and connector using the circuit | |
| CN204179420U (en) | A kind of surge prevention operator guards for the integrated connector of RJ45 | |
| CN103457252A (en) | Common-mode signal protective circuit and electric connector with same | |
| CN204697044U (en) | Network interface circuit and apply the network connector module of this circuit | |
| CN205264354U (en) | Spiral tubular damping generating line | |
| CN106160697B (en) | The network connector of network signal filter circuit and the application circuit | |
| CN202797606U (en) | Lightning arrester for microwave communication | |
| CN102222894B (en) | Network connection common-mode signal protection circuit | |
| CN203745638U (en) | Novel short connection insert block used for secondary terminal bar of voltage transformer | |
| TWI475804B (en) | A filter circuit and a electrical connector including the filter circuit | |
| CN204696671U (en) | Network surge prevention circuit and apply the network surge prevention device of this circuit | |
| CN205790753U (en) | A kind of electric connector | |
| CN106160724A (en) | Network interface circuit and apply the network connector module of this circuit | |
| CN204794664U (en) | Electromagnetic compatibility wave filter | |
| CN103428129A (en) | Communication terminal and emi protection and surge protection device | |
| CN110011290B (en) | Ethernet interface anti-surge circuit | |
| CN102957398A (en) | Filter circuit and electrical connector utilizing same | |
| CN203193074U (en) | Electric connector | |
| TWM461196U (en) | Electrical connector | |
| CN202142729U (en) | Lightning protection filtering socket | |
| CN102290681A (en) | Network electric connector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |