CN202977062U - Video interference suppressor - Google Patents
Video interference suppressor Download PDFInfo
- Publication number
- CN202977062U CN202977062U CN 201220690993 CN201220690993U CN202977062U CN 202977062 U CN202977062 U CN 202977062U CN 201220690993 CN201220690993 CN 201220690993 CN 201220690993 U CN201220690993 U CN 201220690993U CN 202977062 U CN202977062 U CN 202977062U
- Authority
- CN
- China
- Prior art keywords
- common mode
- mode choke
- magnet ring
- video
- shell
- 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
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Abstract
The utility model discloses a video interference suppressor which comprises a common mode choke and an outer case. The common mode choke is formed in the mode that two varnished wires are wound around a magnetic ring with high magnetic permeability. The outer case is wrapped outside the common mode choke for supporting and protecting the common mode choke. An installation fixing hole of the whole product is formed. The video interference suppressor has the advantages of being small in product size, stable in performance, convenient to install and use and the like.
Description
Technical field
The utility model relates to field of video transmission, and what be specifically related to is the restraining device of the noise jamming in a kind of transmission of video.
Background technology
Often adopt common mode choke to suppress extraneous noise jamming in the single-ended transmission of video process of simulation, existing common mode choke is all to adopt coaxial cable coiling on the iron core of transformer to form in the market, in order to obtain larger inductance value, coiling just can obtain desirable effect as much as possible, and cable is generally thicker, so cause the common mode choke volume larger, to be inconvenient to use, the especially inconvenient device interior less in the space installed.
Summary of the invention
The purpose of this utility model is to provide a kind of video-frequency interference eliminator of miniaturization.
For addressing the above problem, the utility model adopts the magnet ring of enamelled wire and high permeability to replace coaxial cable and iron core, has greatly reduced the volume of product, has simultaneously good video and disturbs rejection.Use of the present utility model has larger practical value.
Goal of the invention of the present utility model is to realize by following technical scheme:
A kind of video-frequency interference eliminator comprises: common mode choke 1 and shell 2, common mode choke 1 are fixed on shell 2 inside, after common mode choke 1 comprises two wires 11 and 12, two wire 11 multiple twins of magnet ring, in the same way evenly on magnet ring 12, form two coils.Shell 2 wraps in common mode choke 1 outside, is used for supporting and protection common mode choke 1, and the installation fixing hole 3 of whole product is provided simultaneously.
Described wire is enamelled wire, and described magnet ring is the magnet ring of high permeability.
The utility model adopts enamelled wire to replace coaxial cable, adopts the magnet ring of high permeability to substitute iron core, thereby reaches the purpose that reduces volume.Two enamelled wires on a magnet ring, are formed two coils.Two coil winding-directions are identical, and the number of turn is identical, arrange uniformity between line.When signal code passed through two coils, its electric current is equal and opposite in direction in two coils, and single spin-echo (flowing to opposite) forms differential-mode current, cancelled out each other in the magnetic field that differential-mode current produces in two coils, and therefore, signal can pass through on lossless ground fully.And the noise jamming electric current is when two coils of transformer, the equal and opposite in direction of its electric current in two coils, direction identical (flowing to identical), form common mode current, the magnetic field that common mode current produces in two coils is that superposition strengthens, therefore, it presents larger induction reactance to disturbance current, thereby has suppressed noise jamming.
Description of drawings
Fig. 1 is the structural representation of a kind of video-frequency interference eliminator of the utility model;
Fig. 2 is the A-A profile of Fig. 1;
Fig. 3 is the structural representation of common mode choke in the utility model.
The number in the figure explanation:
1-common mode choke
11-wire
12-magnet ring
2-shell
3-installation fixing hole
Embodiment
How further illustrate the utility model below in conjunction with accompanying drawing 1～Fig. 3 realizes.
Embodiment
As shown in Figure 1 and Figure 2, be the structural representation of a kind of video-frequency interference eliminator of the utility model, comprising: common mode choke 1, shell 2.Common mode choke 1 is fixed on shell 2 inside, and shell 2 wraps in the common mode choke outside, and an overfill protection common mode choke 1 provides the installation fixing hole of whole product simultaneously.
As shown in Figure 3, be the structural representation of common mode choke 1 in the utility model, comprising: two wires 11, magnet ring 12.After two wire 11 multiple twins, in the same way evenly on magnet ring 12, form two coils.Wire is selected the less enamelled wire of internal resistance, and magnet ring is selected the magnet ring of high permeability.Number of turns is according to selected enamelled wire and magnet ring material decision, and the fewer internal resistance of number of turns is less, inductance value is also less, otherwise internal resistance and inductance value all can increase.Should compromise and select concrete number of turns, make Coil resistance try one's best little and inductance value is as far as possible large.
Claims (3)
1. video-frequency interference eliminator, comprise: common mode choke (1) and shell (2), it is characterized in that: described common mode choke (1) is fixed on shell (2) inside, and common mode choke (1) comprises after magnet ring (12) and two multiple twins in the same way evenly the wire (11) on the magnet ring (12).
2. a kind of video-frequency interference eliminator according to claim 1, it is characterized in that: described wire is enamelled wire, described magnet ring is the magnet ring of high permeability.
3. a kind of video-frequency interference eliminator according to claim 1, it is characterized in that: described shell (2) is provided with provides the installation of whole product fixing hole (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220690993 CN202977062U (en) | 2012-12-13 | 2012-12-13 | Video interference suppressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220690993 CN202977062U (en) | 2012-12-13 | 2012-12-13 | Video interference suppressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202977062U true CN202977062U (en) | 2013-06-05 |
Family
ID=48518106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220690993 Expired - Lifetime CN202977062U (en) | 2012-12-13 | 2012-12-13 | Video interference suppressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202977062U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103414522A (en) * | 2013-08-19 | 2013-11-27 | 西安应用光学研究所 | Video signal same frequency interference rejection device of electro-optical stabilized sight product |
| 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 |
-
2012
- 2012-12-13 CN CN 201220690993 patent/CN202977062U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103414522A (en) * | 2013-08-19 | 2013-11-27 | 西安应用光学研究所 | Video signal same frequency interference rejection device of electro-optical stabilized sight product |
| CN103414522B (en) * | 2013-08-19 | 2015-04-01 | 西安应用光学研究所 | Video signal same frequency interference rejection device of electro-optical stabilized sight product |
| 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 |
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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: 20130605 |