CN202282235U - Ethernet coupling transformer for plasma television - Google Patents
Ethernet coupling transformer for plasma television Download PDFInfo
- Publication number
- CN202282235U CN202282235U CN2011204436384U CN201120443638U CN202282235U CN 202282235 U CN202282235 U CN 202282235U CN 2011204436384 U CN2011204436384 U CN 2011204436384U CN 201120443638 U CN201120443638 U CN 201120443638U CN 202282235 U CN202282235 U CN 202282235U
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- Prior art keywords
- coupling transformer
- plasma
- ethernet
- ethernet coupling
- magnetic core
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Abstract
The utility model relates to an Ethernet interface coupling transformer. The utility model aims at the disadvantage that an Ethernet coupling transformer in the prior art is not suitable to special environment of plasma televisions, and discloses an Ethernet coupling transformer for a plasma television. The technical scheme of the Ethernet coupling transformer is in such a way that, the Ethernet coupling transformer for a plasma television comprises initial primary coils and secondary coils on the same magnetic core, and the primary coils and the secondary coils are overlapped and stranded on the magnetic core. The Ethernet coupling transformer in the utility model is advantageous in that, the primary coils and the secondary coils are overlapped and stranded on the magnetic core, and each turn of the primary coils and the secondary coils is provided with symmetrical electric parameters, common mode interference inhibition capability is greatly improved, and the Ethernet coupling transformer is very suitable for common mode interference inhibition in the special environment of plasma televisions.
Description
Technical field
The utility model relates to the signal coupling transformer, particularly the Ethernet interface coupling transformer.
Background technology
In ethernet interface circuit, transmit preferably in order to make the network differential signal, and common mode interference signal is effectively isolated, generally adopt coupling transformer to carry out the signal transmission.And plasma TV is a kind of panel TV set that adopts plasma panel to carry out the image demonstration; Plasma panel is because its special displaying principle; Be usually operated at high pressure, big electric current and high frequency state, make that plasma TV Ethernet interface common mode disturbances mode and other types panel TV set are different.The Ethernet coupling transformer primary coil of prior art and secondary coil adopt the mode of parallel coiling of two-wire or difference coiling, and primary coil and secondary coil symmetry are bad, and it is indifferent that common mode disturbances suppresses.It is bad in plasma TV, to adopt traditional coupling transformer to suppress the common mode disturbances effect, might produce network to disturb, and reduces network running quality.
The utility model content
The utility model technical problem to be solved; It is exactly Ethernet coupling transformer to prior art; The shortcoming of incompatibility plasma TV particular surroundings provides a kind of plasma TV Ethernet coupling transformer, improves the ability that it suppresses common mode disturbances.
The utility model solve the technical problem; The technical scheme that adopts is that plasma TV Ethernet coupling transformer comprises primary coil and secondary coil on the same magnetic core; It is characterized in that said primary coil and secondary coil are overlapped stranded on said magnetic core.
The Ethernet coupling transformer of the utility model; Overlapped stranded being wound on the magnetic core of primary coil and secondary coil; Each circle of primary coil and secondary coil all has the very electrical parameter of symmetry; Improved common mode disturbances greatly and suppressed ability, the common mode disturbances that is fit to very much in the plasma TV particular surroundings suppresses.
Further, said primary coil and secondary coil are made up of one section twisted-pair feeder coiling.
Adopting the twisted-pair feeder coiling, is the simple effective method of realizing the utility model technical scheme.
Concrete, said twisted-pair feeder is an enamelled wire.
Adopt the coiling of enamelled wire twisted-pair feeder, primary coil and secondary coil are stranded closely, even, help the transmission of differential signal, and draw materials conveniently, and cost is low.
More specifically, said enamelled wire specification is: line footpath 0.2mm, thickness of paint layer 0.05～0.2mm.
The enamelled wire of this specification is the regular size of coiling Ethernet coupling transformer.
Further, said primary coil and secondary coil turn ratio are 1: 1.
This is the standard turn ratio of Ethernet coupling transformer.
Concrete, said magnetic core is a toroidal core.
The toroidal core magnetic circuit links up, and magnetic resistance is little, and symmetry is good, is particularly suitable for suppressing common mode disturbances.
More specifically, said toroidal core specification is: external diameter 9mm, internal diameter 5mm, high 3mm.
The magnetic core of this specification, electromagnetic parameter satisfy the requirement of Ethernet coupling transformer, and volume is little, in light weight.
The beneficial effect of the utility model is, coupling transformer is simple in structure, reliability is high, volume is little, in light weight, and the difference mode signal loss is little, and the common mode disturbances decay is big, not only is beneficial to the network signal transmission, and can effectively suppresses common mode disturbances.
Description of drawings
Fig. 1 is the sketch map of embodiment;
Fig. 2 is the magnetic core sectional schematic diagram.
Embodiment
Below in conjunction with accompanying drawing and embodiment, describe the technical scheme of the utility model in detail.
The Ethernet coupling transformer of the utility model; Overlapped stranded being wound on the said magnetic core of primary coil and secondary coil; Each circle of primary coil and secondary coil all has the very electrical parameter of symmetry; Improved common mode disturbances greatly and suppressed ability, the common mode disturbances that is fit to very much in the plasma TV particular surroundings suppresses.
Embodiment
As shown in Figure 1, the Ethernet coupling transformer of the utility model comprises magnetic core 1, primary coil 2 and secondary coil 3.Primary coil 2 is overlapped stranded on said magnetic core 1 with secondary coil 3, and this routine primary coil 2 is made up of one section twisted-pair feeder coiling with secondary coil 3.Twisted-pair feeder wherein is line footpath 0.2mm, the enamelled wire of thickness of paint layer 0.05～0.2mm, and magnetic core 1 adopts the ferrite toroidal magnetic core of high magnetic permeability, and its specification is: D outer diameter=9mm, inner diameter d=5mm, high a=3mm, width b=D-d=4mm.As shown in Figure 2, magnetic core 1 section is the rectangle of 4mm * 3mm.This routine Ethernet coupling transformer primary coil and secondary inductance amount are: 80～200 μ H.
The annexation of Ethernet coupling transformer in circuit is following:
The top pin 20 of primary coil 2, terminal leads 21 is serially connected in the Ethernet differential signal; Secondary coil 3 top pins 30, terminal leads 31 is an output, is connected with the plasm TV machine circuit, with Ethernet differential signal input television set, so just forms the effective transmission of differential signal and the transmission of obstruct common mode interference signal.Because the symmetry of primary coil and secondary coil, its connection in circuit can be exchanged.
Claims (7)
1. plasma TV Ethernet coupling transformer comprises primary coil and secondary coil on the same magnetic core, it is characterized in that, said primary coil and secondary coil are overlapped stranded on said magnetic core.
2. plasma TV Ethernet coupling transformer according to claim 1 is characterized in that said primary coil and secondary coil are made up of one section twisted-pair feeder coiling.
3. plasma TV Ethernet coupling transformer according to claim 2 is characterized in that said twisted-pair feeder is an enamelled wire.
4. plasma TV Ethernet coupling transformer according to claim 3 is characterized in that, said enamelled wire specification is: line footpath 0.2mm, thickness of paint layer 0.05～0.2mm.
5. plasma TV Ethernet coupling transformer according to claim 1 is characterized in that said primary coil and secondary coil turn ratio are 1: 1.
6. according to any described plasma TV Ethernet coupling transformer of claim 1～5, it is characterized in that said magnetic core is a toroidal core.
7. plasma TV Ethernet coupling transformer according to claim 6 is characterized in that, said toroidal core specification is: external diameter 9mm, internal diameter 5mm, high 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204436384U CN202282235U (en) | 2011-11-10 | 2011-11-10 | Ethernet coupling transformer for plasma television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204436384U CN202282235U (en) | 2011-11-10 | 2011-11-10 | Ethernet coupling transformer for plasma television |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202282235U true CN202282235U (en) | 2012-06-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204436384U Expired - Fee Related CN202282235U (en) | 2011-11-10 | 2011-11-10 | Ethernet coupling transformer for plasma television |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202282235U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102779635A (en) * | 2012-08-24 | 2012-11-14 | 东莞市铭普实业有限公司 | 10G Ethernet transformer and manufacturing method thereof |
| CN103426611A (en) * | 2013-09-05 | 2013-12-04 | 东莞铭普光磁股份有限公司 | Communication transformer and winding method of winding set thereof |
| CN103578717A (en) * | 2012-08-08 | 2014-02-12 | 富士康(昆山)电脑接插件有限公司 | Transformer and manufacturing method and electric connector thereof |
| US20160336108A1 (en) * | 2015-05-14 | 2016-11-17 | Maxlinear, Inc. | Method And System For Winding Transformers To Maximize Symmetry Of The Primary And Secondary Coils |
| US9697944B2 (en) | 2012-06-19 | 2017-07-04 | Silora R&D (A.S.C.) Ltd. | Device for delivering galvanic isolated digital video at high frequencies |
| CN110444375A (en) * | 2019-08-20 | 2019-11-12 | 埃斯凯电气（天津）有限公司 | A kind of transformer and winding production method |
| EP4026149A4 (en) * | 2019-09-06 | 2024-03-13 | Analog Power Conv Llc | Transient noise reduction filtering system |
-
2011
- 2011-11-10 CN CN2011204436384U patent/CN202282235U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9697944B2 (en) | 2012-06-19 | 2017-07-04 | Silora R&D (A.S.C.) Ltd. | Device for delivering galvanic isolated digital video at high frequencies |
| CN103578717A (en) * | 2012-08-08 | 2014-02-12 | 富士康(昆山)电脑接插件有限公司 | Transformer and manufacturing method and electric connector thereof |
| US9502829B2 (en) | 2012-08-08 | 2016-11-22 | Hon Hai Precision Industry Co., Ltd. | Modular jack having transformer with winding wires and method of making the same |
| CN102779635A (en) * | 2012-08-24 | 2012-11-14 | 东莞市铭普实业有限公司 | 10G Ethernet transformer and manufacturing method thereof |
| CN102779635B (en) * | 2012-08-24 | 2015-03-04 | 东莞铭普光磁股份有限公司 | 10G Ethernet transformer and manufacturing method thereof |
| CN103426611A (en) * | 2013-09-05 | 2013-12-04 | 东莞铭普光磁股份有限公司 | Communication transformer and winding method of winding set thereof |
| US20160336108A1 (en) * | 2015-05-14 | 2016-11-17 | Maxlinear, Inc. | Method And System For Winding Transformers To Maximize Symmetry Of The Primary And Secondary Coils |
| US10347414B2 (en) * | 2015-05-14 | 2019-07-09 | Maxlinear, Inc. | Method and system for winding transformers to maximize symmetry of the primary and secondary coils |
| CN110444375A (en) * | 2019-08-20 | 2019-11-12 | 埃斯凯电气（天津）有限公司 | A kind of transformer and winding production method |
| EP4026149A4 (en) * | 2019-09-06 | 2024-03-13 | Analog Power Conv Llc | Transient noise reduction filtering system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120620 Termination date: 20171110 |