CN202049840U - Ferrite core for fixing inductor - Google Patents
Ferrite core for fixing inductor Download PDFInfo
- Publication number
- CN202049840U CN202049840U CN2011201669927U CN201120166992U CN202049840U CN 202049840 U CN202049840 U CN 202049840U CN 2011201669927 U CN2011201669927 U CN 2011201669927U CN 201120166992 U CN201120166992 U CN 201120166992U CN 202049840 U CN202049840 U CN 202049840U
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- CN
- China
- Prior art keywords
- ferrite core
- cylindrical
- direct current
- ferrite
- 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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Abstract
The utility model discloses a ferrite core for a fixing inductor. The utility model is characterized in that the ferrite core comprises a cylindrical magnetic core (2). The tail end of the cylindrical magnetic core (2) is adhered with a magnetized cylindrical permanent ferrite sheet (1). The magnetic field direction of the permanent ferrite sheet, which is generated in the cylindrical ferrite core, is reverse to the magnetic field direction of the direct current, which is generated in the cylindrical ferrite core in a fixing inductor winding. As one part of the magnetic field generated by the direct current in the fixing inductor winding is counteracted by the magnetic field which is generated by the permanent ferrite sheet, the larger direct current can pass through the fixing inductor winding. With the adoption of the ferrite core for the fixing inductor, the direct current overlapping property of the fixing inductor can be greatly improved, and the larger direct current can pass through the fixing inductor.
Description
Technical field
The utility model relates to a kind of ferrite core, relates in particular to a kind of fixed inductor ferrite core.
Background technology
At present, generally use ferrite core as fixed inductor 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 fixed inductor to allow the direct current that passes through increasing, and this tends to cause the decline significantly of fixed inductor winding inductance, thereby make the fixed inductor can't operate as normal.For preventing the generation of magnetic saturation phenomenon, must improve the dc superposition characteristic of fixed inductor, traditional method is to open one section air gap in the magnetic circuit of magnetic core, perhaps simply make ferrite core become open-flux path, although this method can be improved the dc superposition characteristic of fixed inductor to a certain extent, but improved degree is very limited, especially for the ferrite core that is operated under the high frequency condition, often adopt the NiZn Ferrite Material, and the NiZn Ferrite Material is easy to occur saturation magnetization, thereby the fixed inductor winding inductance is sharply descended because saturation flux density is lower, this can make the electronic equipment can't operate as normal, even burns.Therefore,, only adopt open-flux path, can't improve the dc superposition characteristic of fixed inductor greatly for being operated in fixed inductor with big direct-current component.
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 electronic circuit that can be applied to have big direct-current component with the fixed inductor ferrite core.
The technical scheme that the utility model adopted is: the utility model comprises a cylindrical ferrite core, an end at cylindrical ferrite core, paste a cylindrical magnet ferrite sheet that has magnetized, cylindrical magnet ferrite sheet direct current in magnetic direction that cylindrical ferrite magnetic is produced in the heart and fixed inductor winding is opposite at the magnetic direction that cylindrical ferrite magnetic is produced in the heart.
The beneficial effects of the utility model are: because the permanent-magnet ferrite sheet magnetic direction that direct current produced in magnetic direction that cylindrical ferrite magnetic interior portion is produced and fixed inductor winding is opposite, therefore, some is offset the magnetic field that direct current produced in the fixed inductor winding by the magnetic field that the permanent-magnet ferrite sheet is produced, thereby can make in the fixed inductor winding by bigger direct current.By the inventive method, can improve the dc superposition characteristic of fixed inductor greatly, fixed inductor can be allowed by bigger direct current.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is a fixed inductor ferrite core structural representation.
Embodiment
In Fig. 1, comprise a cylindrical ferrite core 2, terminal paste a cylindrical magnet ferrite sheet 1 that has magnetized at one, cylindrical magnet ferrite sheet direct current in magnetic direction that cylindrical ferrite magnetic is produced in the heart and fixed inductor winding is opposite at the magnetic direction that cylindrical ferrite magnetic is produced in the heart.
Because some is offset the magnetic field that direct current produced in the fixed inductor winding by the magnetic field that the permanent-magnet ferrite magnetic core is produced, and can pass through bigger direct current thereby can make in the fixed inductor winding.By the inventive method, can improve the dc superposition characteristic of fixed inductor greatly, fixed inductor can be allowed by bigger direct current.
Claims (1)
1. a fixed inductor ferrite core is characterized in that: comprise a cylindrical ferrite core (2), at an end of cylindrical ferrite core (2), paste a cylindrical magnet ferrite sheet (1) that has magnetized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201669927U CN202049840U (en) | 2011-05-20 | 2011-05-20 | Ferrite core for fixing inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201669927U CN202049840U (en) | 2011-05-20 | 2011-05-20 | Ferrite core for fixing inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202049840U true CN202049840U (en) | 2011-11-23 |
Family
ID=44990140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201669927U Expired - Fee Related CN202049840U (en) | 2011-05-20 | 2011-05-20 | Ferrite core for fixing inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202049840U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102306537A (en) * | 2011-05-20 | 2012-01-04 | 张家港市众力磁业有限公司 | Ferrite magnetic core for fixed inductor |
-
2011
- 2011-05-20 CN CN2011201669927U patent/CN202049840U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102306537A (en) * | 2011-05-20 | 2012-01-04 | 张家港市众力磁业有限公司 | Ferrite magnetic core for fixed 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111123 Termination date: 20160520 |