CN202049841U - Ferrite core for high-frequency transformer - Google Patents
Ferrite core for high-frequency transformer Download PDFInfo
- Publication number
- CN202049841U CN202049841U CN2011201670055U CN201120167005U CN202049841U CN 202049841 U CN202049841 U CN 202049841U CN 2011201670055 U CN2011201670055 U CN 2011201670055U CN 201120167005 U CN201120167005 U CN 201120167005U CN 202049841 U CN202049841 U CN 202049841U
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- China
- Prior art keywords
- frequency transformer
- ferrite core
- high frequency
- core
- cylindrical
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Abstract
The utility model discloses a ferrite core for a high-frequency transformer, which is characterized by comprising a cylindrical ferrite core (1). Two grooves are peripherally arranged on the cylindrical ferrite core (1) by cutting, two coil windings are wound into the two grooves respectively to serve as a primary coil (3) and a secondary coil (4) of the transformer, and a magnetized cylindrical paramagnet magnet ferrite plate (2) is adhered to one end of the core shaped like a Chinese character Wang. Part of magnetic field generated by alternating current in the high-frequency transformer windings is canceled by the magnetic field generated by the permanent magnet ferrite core, so that higher alternating current can pass through the high-frequency transformer windings. By using the method, direct current superposition characteristic of the high-frequency transformer is improved greatly, and higher direct current is allowed to pass through the high-frequency converter.
Description
Technical field
The utility model relates to a kind of ferrite core, relates in particular to a kind of high frequency transformer ferrite core.
Background technology
At present, generally use ferrite core as the high-frequency electronic transformer 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 transformer to allow the direct current that passes through increasing, and this tends to cause the decline significantly of high frequency transformer winding inductance, thereby make the high frequency transformer can't operate as normal.For preventing the generation of magnetic saturation phenomenon, must improve the dc superposition characteristic of high frequency transformer, 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 high frequency transformer 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 Transformer 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 high frequency transformer greatly for being operated in high frequency transformer 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 high frequency transformer ferrite core.
The technical scheme that the utility model adopted is: the utility model comprises that (this magnetic core profile vertically is king's font to a cylindrical ferrite core that along the circumferential direction cuts two grooves, also can be referred to as king's font magnetic core), in two grooves, two coil windings of coiling are as the primary coil and the secondary coil of transformer respectively, end at king's font magnetic core, paste a cylindrical magnet ferrite sheet that has magnetized, the magnetic direction that direct current produced in the magnetic direction that this permanent-magnet ferrite sheet is produced and the Transformer Winding is opposite.
The beneficial effects of the utility model are: because the magnetic direction that direct current produced in the magnetic direction that the permanent-magnet ferrite sheet is produced in king's font oxysome magnetic core inside and the Transformer Winding is opposite, therefore, some is offset the magnetic field that direct current produced in the high frequency transformer winding by the magnetic field that the permanent-magnet ferrite magnetic core is produced, thereby can make in the high frequency transformer winding by bigger direct current.By the inventive method, can improve the dc superposition characteristic of high frequency transformer greatly, high frequency transformer 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 high frequency transformer ferrite core structural representation.
Embodiment
In Fig. 1, comprise that (this magnetic core profile vertically is king's font to a cylindrical ferrite core 1 that along the circumferential direction cuts two grooves, also can be referred to as king's font magnetic core), in two grooves, two coil windings of coiling are as the primary coil 3 and the secondary coil 4 of transformer respectively, at an end of king's font magnetic core, paste a cylindrical magnet ferrite sheet 2 that has magnetized.
Because some is offset the magnetic field that direct current produced in the high frequency transformer 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 high frequency transformer winding.By the inventive method, can improve the dc superposition characteristic of high frequency transformer greatly, high frequency transformer can be allowed by bigger direct current.
Claims (1)
1. high frequency transformer ferrite core, it is characterized in that: comprise a cylindrical ferrite core (1) that along the circumferential direction cuts two grooves, in two grooves, two coil windings of coiling are as the primary coil (3) and the secondary coil 4 of transformer respectively, at an end of this ferrite core, paste a cylindrical magnet ferrite sheet (2) that has magnetized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201670055U CN202049841U (en) | 2011-05-20 | 2011-05-20 | Ferrite core for high-frequency transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201670055U CN202049841U (en) | 2011-05-20 | 2011-05-20 | Ferrite core for high-frequency transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202049841U true CN202049841U (en) | 2011-11-23 |
Family
ID=44990141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201670055U Expired - Fee Related CN202049841U (en) | 2011-05-20 | 2011-05-20 | Ferrite core for high-frequency transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202049841U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102306540A (en) * | 2011-05-20 | 2012-01-04 | 张家港市众力磁业有限公司 | Ferrite core for high-frequency transformer |
-
2011
- 2011-05-20 CN CN2011201670055U patent/CN202049841U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102306540A (en) * | 2011-05-20 | 2012-01-04 | 张家港市众力磁业有限公司 | Ferrite core for high-frequency transformer |
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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 |