CN203165614U - Common mode choke - Google Patents
Common mode choke Download PDFInfo
- Publication number
- CN203165614U CN203165614U CN 201320089251 CN201320089251U CN203165614U CN 203165614 U CN203165614 U CN 203165614U CN 201320089251 CN201320089251 CN 201320089251 CN 201320089251 U CN201320089251 U CN 201320089251U CN 203165614 U CN203165614 U CN 203165614U
- Authority
- CN
- China
- Prior art keywords
- common mode
- magnetic conductor
- coil
- mode inductance
- mode choke
- 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 - Fee Related
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Abstract
The utility model discloses a common mode choke which comprises a magnetizer, a coil is wound around the magnetizer, two wire leading ends of the coil penetrate a panel connected with the magnetizer, and the panel is connected onto the magnetizer through a plastic plate. The common mode choke can achieve high impedance and excellent frequency.
Description
Technical field
The utility model relates to a kind of common mode inductance, belongs to the electric component field.
Background technology
In circuit engineering, especially Switching Power Supply needs to use common mode inductance to be used for filtering the electromagnetic interference signal of common mode, because the existence of common-mode signal, circuit signal is easy to generate negative effect, therefore need suppresses common-mode signal, improve the circuit electrical characteristic.Existing common mode inductance one section enamelled wire of coiling on iron core on the market, its impedance is low, and inductance value is low, and the scope of application is very little, only can be used for limited occasion.
Summary of the invention
At the defective of prior art, the utility model discloses a kind of common mode inductance, can effectively suppress the generation of common-mode signal, its frequency characteristic is good, high impedance, high inductance, has superior electric property.
For achieving the above object, the utility model is achieved through the following technical solutions:
Common mode inductance comprises annular magnetic conductor, is surrounded with coil on the magnetic conductor, and two lead ends of coil pass the flat board that links to each other with magnetic conductor, and its middle plateform is connected on the magnetic conductor by plastic plate.
Wherein, flat board at first is to be connected to plastic plate by the insulation viscose glue, and plastic plate is connected to magnetic conductor by the insulation viscose glue; Other connected mode also can adopt, and for example can adopt continuously connected fastener that flat board and plastic plate are coupled together etc.
Further, magnetic conductor is provided with insulating barrier, and coil is along the insulating barrier symmetry.
By said structure, farthest reduced electromagnetic interference, improved impedance and inductance value.
In order to guarantee good electric property, the distance between the lead end (being lead terminal again) and dull and stereotyped size all can not be too big, otherwise can influence frequency characteristic; Can not be too little, otherwise can produce electromagnetic interference.Preferably, the distance between described two lead ends is 16.0-18.0mm, and dull and stereotyped length is 24.0-26.0mm.
Based on above-mentioned distance, the diameter of described magnetic conductor is not less than two distances between the lead end, is not higher than 45.0mm.
By using said structure, common mode inductance of the present utility model has improved impedance and the inductance value of product to greatest extent, and has guaranteed frequency characteristic.
Description of drawings
Fig. 1 is the utility model common mode inductance structural representation.
Embodiment
With reference to figure 1, common mode inductance of the present utility model, the magnetic conductor 1 that comprises annular, be surrounded with coil 2 on the magnetic conductor, magnetic conductor is provided with insulating barrier 4, and insulating barrier 4 sticks on magnetic conductor, and coil is along the insulating barrier symmetry, two lead ends 21 of coil pass the flat board 3 that links to each other with magnetic conductor, and its middle plateform is connected on the magnetic conductor by plastic plate 31.
Wherein, between the lead end 21 is 17.0mm apart from B, and dull and stereotyped length C is 25mm, and the diameter A of magnetic conductor is 40mm.
Claims (4)
1. common mode inductance is characterized in that comprising annular magnetic conductor, and be surrounded with coil on the magnetic conductor, two lead ends of coil pass the flat board that links to each other with magnetic conductor, and its middle plateform is connected on the magnetic conductor by plastic plate.
2. common mode inductance according to claim 1 is characterized in that magnetic conductor is provided with insulating barrier, and coil is along the insulating barrier symmetry.
3. common mode inductance according to claim 1 is characterized in that the distance between described two lead ends is 16.0-18.0mm, and dull and stereotyped length is 24.0-26.0mm.
4. common mode inductance according to claim 3 is characterized in that the diameter of described magnetic conductor is not less than two distances between the lead end, is not higher than 45.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320089251 CN203165614U (en) | 2013-02-20 | 2013-02-20 | Common mode choke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320089251 CN203165614U (en) | 2013-02-20 | 2013-02-20 | Common mode choke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203165614U true CN203165614U (en) | 2013-08-28 |
Family
ID=49026779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320089251 Expired - Fee Related CN203165614U (en) | 2013-02-20 | 2013-02-20 | Common mode choke |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203165614U (en) |
-
2013
- 2013-02-20 CN CN 201320089251 patent/CN203165614U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130828 Termination date: 20140220 |