CN203721434U - Common-mode coil - Google Patents
Common-mode coil Download PDFInfo
- Publication number
- CN203721434U CN203721434U CN201320822566.3U CN201320822566U CN203721434U CN 203721434 U CN203721434 U CN 203721434U CN 201320822566 U CN201320822566 U CN 201320822566U CN 203721434 U CN203721434 U CN 203721434U
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- magnetic core
- mode coil
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Abstract
The utility model relates to a common-mode coil. The common-mode coil is formed by a magnetic core, a framework which is used for fixing the magnetic core, and a winding which is wound on the magnetic core, wherein two sides of the framework are provided with installation grooves, two ends of a hoop which is provided with a U-shaped opening are embedded in the installation grooves, the magnetic core is formed by a first magnetic core, a second magnetic core and a third magnetic core, the first magnetic core, the second magnetic core and the third magnetic core are concentric, the first magnetic core is positioned in the second magnetic core, the first magnetic core and the second magnetic core are fixed into a whole, the second magnetic core is positioned in the third magnetic core, the second magnetic core and the third magnetic core are fixed into a whole, the second magnetic core is made of a permeability alloy, and the first magnetic core and the third magnetic core are made of amorphous and nanocrystal magnetically soft alloys. The common-mode coil disclosed by the utility model has a higher magnetic conductivity within a wider frequency range.
Description
Technical field
The utility model relates to a kind of co-mode coil.
Background technology
Co-mode coil has the structure that is similar to transformer, and its skeleton by magnetic core, fixed magnetic core and the winding that is around on magnetic core form, and the both sides of skeleton are provided with mounting groove, and the two ends of an anchor ear are embedded in described mounting groove.Yet, in high-frequency circuit, generally use the co-mode coil with magnetic core, develop rapidly along with electronic technology, require electronic devices and components constantly to wideband, miniaturization development, in order to meet this growth requirement, require the operating frequency of co-mode coil more and more wider, and the inductance under each frequency (being the magnetic permeability of material) is high as much as possible, to improve the result of use of co-mode coil.Tradition, for co-mode coil magnetic core, is often made by single material (magnetic material), and owing to grasping the restriction of characteristic in material, the cut-off frequency of every kind of permeability is different, and permeability is higher, and its cut-off frequency is lower.For example, the nano crystal soft magnetic material that magnetic permeability is 80000, its cut-off frequency is 100KHz; Magnetic permeability is 15000 MnZn Ferrite Material, and its cut-off frequency is 300KHz; Magnetic permeability is that its cut-off frequency of MnZn Ferrite Material of 5000 is 700KHz; Magnetic permeability is that its cut-off frequency of MnZn Ferrite Material of 2000 is 3MHz; Magnetic permeability is that its cut-off frequency of NiZn Ferrite Material of 100 is 300MHz.Therefore, the magnetic core of being made by single Ferrite Material or metal soft magnetic material, can not meet in wider frequency range, has this requirement of higher magnetic permeability, thereby can not meet wideband future development demand.
Summary of the invention
For above-mentioned technical problem, the purpose of this utility model is to provide a kind of co-mode coil, and co-mode coil of the present utility model has higher magnetic permeability in wider frequency range.
Realize the technical solution of the utility model as follows:
Co-mode coil, by magnetic core, the skeleton of fixed magnetic core and the winding being around on magnetic core form, the both sides of described skeleton are provided with mounting groove, two ends with the anchor ear of U-shaped opening are embedded in described mounting groove, described magnetic core is by the first magnetic core, the second magnetic core and the 3rd magnetic core form, the first magnetic core, the second magnetic core and the 3rd magnetic core are concentric, the first magnetic core is arranged in the second magnetic core and is fixed as one with the second magnetic core, the second magnetic core is arranged in the 3rd magnetic core and is fixed as one with the 3rd magnetic core, wherein the material of the second magnetic core is permalloy, the material of the first magnetic core and the 3rd magnetic core is amorphous and nano-crystal soft magnetic alloy.
Described skeleton is bakelite skeleton.
The model of described skeleton is UU16-1.
The model of described winding is 2UEW.
The full-size of the entire length of described co-mode coil is 23mm, and the full-size of integral width is 19mm, and the full-size of whole height is 31mm.
Adopted such scheme, the material of the second magnetic core is permalloy, and the permalloy with face-centered cubic crystal structure has good plasticity, can be processed into ultra-thin band and the various use form of 1 μ m.Permalloy magnetic permeability is higher tens times than silicon steel, and iron loss is also low 2～3 times than silicon steel.Make the transformer of upper frequency (400～8000Hz).The material of the first magnetic core and the 3rd magnetic core is amorphous and nano-crystal soft magnetic alloy.The magnetic permeability of amorphous and nano-crystal soft magnetic alloy is higher tens times than silicon steel than similarly, because magnetic core of the present invention is to be made by least 2 kinds of unlike materials (magnetic material), its permeability frequency characteristics combines the feature of different magnetic materials, make magnetic core in wider frequency range, can present higher magnetic permeability, meet the requirement of co-mode coil to wideband future development.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of magnetic core;
Embodiment
Referring to figs. 1 through Fig. 2, co-mode coil of the present utility model, is comprised of the skeleton 2 of magnetic core 1, fixed magnetic core 1 and the winding 3 being around on magnetic core 1, and the both sides of described skeleton 3 are provided with mounting groove, and two ends with the anchor ear 4 of U-shaped opening are embedded in described mounting groove.Described magnetic core 1 is comprised of the first magnetic core 11, the second magnetic core 12 and the 3rd magnetic core 13, the first magnetic core 11, the second magnetic core 12 and the 3rd magnetic core 13 are concentric, the first magnetic core 11 is arranged in the second magnetic core 12 and is fixed as one with the second magnetic core 12, the second magnetic core 12 is arranged in the 3rd magnetic core 13 and is fixed as one with the 3rd magnetic core 13, wherein the material of the second magnetic core 12 is permalloy, and the material of the first magnetic core 11 and the 3rd magnetic core 13 is amorphous and nano-crystal soft magnetic alloy.Skeleton 2 is bakelite skeleton, and the model of skeleton 2 is UU16-1.The model of winding 3 is 2UEW.The full-size of the entire length of co-mode coil is 23mm, and the full-size of integral width is 19mm, and the full-size of whole height is 31mm.
Claims (5)
1. co-mode coil, by magnetic core, the skeleton of fixed magnetic core and the winding being around on magnetic core form, the both sides of described skeleton are provided with mounting groove, two ends with the anchor ear of U-shaped opening are embedded in described mounting groove, it is characterized in that: described magnetic core is by the first magnetic core, the second magnetic core and the 3rd magnetic core form, the first magnetic core, the second magnetic core and the 3rd magnetic core are concentric, the first magnetic core is arranged in the second magnetic core and is fixed as one with the second magnetic core, the second magnetic core is arranged in the 3rd magnetic core and is fixed as one with the 3rd magnetic core, wherein the material of the second magnetic core is permalloy, the material of the first magnetic core and the 3rd magnetic core is amorphous and nano-crystal soft magnetic alloy.
2. co-mode coil according to claim 1, is characterized in that: described skeleton is bakelite skeleton.
3. co-mode coil according to claim 1 and 2, is characterized in that: the model of described skeleton is UU16-1.
4. co-mode coil according to claim 1, is characterized in that: the model of described winding is 2UEW.
5. co-mode coil according to claim 1, is characterized in that: the full-size of the entire length of described co-mode coil is 23mm, and the full-size of integral width is 19mm, and the full-size of whole height is 31mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320822566.3U CN203721434U (en) | 2013-12-12 | 2013-12-12 | Common-mode coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320822566.3U CN203721434U (en) | 2013-12-12 | 2013-12-12 | Common-mode coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203721434U true CN203721434U (en) | 2014-07-16 |
Family
ID=51160572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320822566.3U Expired - Fee Related CN203721434U (en) | 2013-12-12 | 2013-12-12 | Common-mode coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203721434U (en) |
-
2013
- 2013-12-12 CN CN201320822566.3U patent/CN203721434U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140716 Termination date: 20151212 |
|
| EXPY | Termination of patent right or utility model |