CN202049839U - Ferrite core - Google Patents
Ferrite core Download PDFInfo
- Publication number
- CN202049839U CN202049839U CN2011201669861U CN201120166986U CN202049839U CN 202049839 U CN202049839 U CN 202049839U CN 2011201669861 U CN2011201669861 U CN 2011201669861U CN 201120166986 U CN201120166986 U CN 201120166986U CN 202049839 U CN202049839 U CN 202049839U
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- CN
- China
- Prior art keywords
- ferrite
- core
- mnzn
- ferrite material
- magnetic core
- 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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- Soft Magnetic Materials (AREA)
Abstract
The utility model discloses a ferrite core which comprises a cylindrical ferrite core (1) which is made of NiZn (nickel-zinc) ferrite materials, and a columnar magnetic core (2) made of MnZn (manganese zinc) ferrite materials is inserted into the cylindrical ferrite core. As the MnZn ferrite material has higher saturation magnetic flux density and higher magnetic conductivity, the combined magnetic core can cause the winding to acquire excellent direct current overlapping property and have higher inductance at the same time, thereby meeting some requirements of both excellent direct current overlapping property and high-inductive high frequency electronic circuit.
Description
Technical field
The utility model relates to a kind of ferrite core.
Background technology
At present, generally use ferrite core as high frequency choke coil in the high-frequency circuit, develop rapidly along with electronic technology, require electronic devices and components constantly to develop to miniaturization and high power direction, in order to satisfy this growth requirement, require high frequency choke coil to allow the direct current that passes through increasing, and this tends to cause the decline significantly of high frequency choke coil winding inductance, thereby make the high frequency choke coil can't operate as normal.For preventing the generation of magnetic saturation phenomenon, must improve the dc superposition characteristic of high frequency choke coil, traditional method is to make ferrite core become open-flux path, and it is made cylindrical (also being referred to as clavate), in order to effectively reduce the volume of components and parts, often require direct coiling enamelled wire coil on magnetic core, used Ferrite Material must adopt the NiZn Ferrite Material of high resistivity, the MnZn ferrite is very low because of its resistivity, directly the coiling enamelled wire.But the NiZn Ferrite Material is easy to occur saturation magnetization, thereby the choke winding inductance is sharply descended because saturation flux density is lower, and this can make the electronic equipment can't operate as normal, even burns; And, can't obtain higher inductance usually because NiZn ferrite magnetic conductance is lower.Therefore, require high DC stacked characteristic, require again in the high-frequency circuit of high inductance simultaneously, can't obtain satisfied effect at some.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, provides a kind of and can be applied to some and require high DC stacked characteristic, requires the ferrite core in the high-frequency circuit of high inductance simultaneously again.
The technical scheme that the utility model adopted is: the utility model comprises a cylinder type ferrite magnetic core of being made by the NiZn Ferrite Material, inserts a cylindrical magnetic core of being made by the MnZn Ferrite Material in the inside of cylinder type ferrite magnetic core.
The beneficial effects of the utility model are: insert a cylindrical magnetic core of being made by the MnZn Ferrite Material in the cylinder type ferrite magnetic core inside that the NiZn Ferrite Material is made, because the MnZn Ferrite Material has higher saturation flux density, usually about 500mT, far above 300～400mT of NiZn Ferrite Material, thereby the dc superposition characteristic of Ferrite Material is strengthened greatly; Magnetic permeability owing to the MnZn Ferrite Material will be much higher than the NiZn Ferrite Material simultaneously, thereby can make winding obtain higher inductance.Satisfy some both good dc superposition characteristic of needs, needed the requirement of the high-frequency circuit of high inductance simultaneously again.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is a ferrite core combining structure schematic diagram.
Embodiment
In Fig. 1, comprise a cylinder type ferrite magnetic core 1 of making by the NiZn Ferrite Material, insert a cylindrical magnetic core 2 of making by the MnZn Ferrite Material in the inside of cylinder type ferrite magnetic core.Because the MnZn Ferrite Material has higher saturation flux density, about 500mT, far above 300～400mT of NiZn Ferrite Material, thereby the dc superposition characteristic of Ferrite Material is strengthened greatly usually; Magnetic permeability owing to the MnZn Ferrite Material will be much higher than the NiZn Ferrite Material simultaneously, thereby can make winding obtain higher inductance.Satisfy some both good dc superposition characteristic of needs, needed the requirement of the high-frequency circuit of high inductance simultaneously again.
Claims (1)
1. a ferrite core is characterized in that: comprise a cylinder type ferrite magnetic core (1) of being made by the NiZn Ferrite Material, insert a cylindrical magnetic core (2) of being made by the MnZn Ferrite Material in the inside of cylinder type ferrite magnetic core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201669861U CN202049839U (en) | 2011-05-20 | 2011-05-20 | Ferrite core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201669861U CN202049839U (en) | 2011-05-20 | 2011-05-20 | Ferrite core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202049839U true CN202049839U (en) | 2011-11-23 |
Family
ID=44990139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201669861U Expired - Fee Related CN202049839U (en) | 2011-05-20 | 2011-05-20 | Ferrite core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202049839U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102306536A (en) * | 2011-05-20 | 2012-01-04 | 张家港市众力磁业有限公司 | Ferrite magnetic core |
| CN103943302A (en) * | 2014-05-04 | 2014-07-23 | 海安县巨力磁材有限责任公司 | Radial anisotropic magnetic ring combination |
| CN104021919A (en) * | 2014-05-09 | 2014-09-03 | 无锡晶磊电子有限公司 | Blocky combined magnetic core for filter inductor |
-
2011
- 2011-05-20 CN CN2011201669861U patent/CN202049839U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102306536A (en) * | 2011-05-20 | 2012-01-04 | 张家港市众力磁业有限公司 | Ferrite magnetic core |
| CN103943302A (en) * | 2014-05-04 | 2014-07-23 | 海安县巨力磁材有限责任公司 | Radial anisotropic magnetic ring combination |
| CN104021919A (en) * | 2014-05-09 | 2014-09-03 | 无锡晶磊电子有限公司 | Blocky combined magnetic core for filter inductor |
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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: 20111123 Termination date: 20160520 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |