CN102306534A - Ferrite magnetic core for transformer - Google Patents
Ferrite magnetic core for transformer Download PDFInfo
- Publication number
- CN102306534A CN102306534A CN 201110134722 CN201110134722A CN102306534A CN 102306534 A CN102306534 A CN 102306534A CN 201110134722 CN201110134722 CN 201110134722 CN 201110134722 A CN201110134722 A CN 201110134722A CN 102306534 A CN102306534 A CN 102306534A
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- transformer
- ferrite
- ferrite magnetic
- magnetic
- magnetic core
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- 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.)
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Abstract
The invention discloses a ferrite magnetic core for a transformer. The ferrite magnetic core comprises two semi-annular ferrite magnetic cores (1), wherein two magnetized cuboid permanent magnet ferrite pieces (2) and (2') are arranged between two combining surfaces on which the two semi-annular ferrite magnetic cores (1) are mutually jointed; and the directions of magnetic fields generated by the two permanent magnet ferrite pieces in the two semi-annular ferrite magnetic cores are consistent, and the directions of the generated magnetic fields are opposite to the directions of magnetic fields generated by direct current (DC) in a transformer winding. The partial magnetic fields generated by the DC in the transformer winding are offset by the magnetic fields generated by the permanent magnet ferrite magnetic cores, so that larger DC can pass through the transformer winding. By the ferrite magnetic core, the DC superposition property of the transformer can be greatly improved, and the larger DC can be permitted to pass through the transformer.
Description
Technical field
The present invention relates to a kind of ferrite core, relate in particular to a kind of transformer and use ferrite core.
Background technology
At present; Generally use ferrite core as transformer in the high-frequency circuit,, require electronic devices and components constantly to develop to miniaturization and high power direction along with the develop rapidly of electronic technology; In order to satisfy this growth requirement; The direct current that requires transformer to allow to pass through is increasing, and this tends to cause the decline significantly of Transformer Winding inductance, thereby makes the transformer can't operate as normal.For preventing the generation of magnetic saturation phenomenon; Must improve the dc superposition characteristic of transformer; Traditional method is in the magnetic circuit of magnetic core, to open one section air gap, although this method can be improved the dc superposition characteristic of transformer to a certain extent, improved degree is very limited.For being operated in transformer with big direct-current component, can't adopt this method, because; Air gap in the ferrite core magnetic circuit can not be opened very greatly, otherwise; Inductance is very low, and leakage field is very big, can produce certain electromagnetic to other electronic devices and components and disturb.
Summary of the invention
Technical problem to be solved by this invention is the deficiency that overcomes prior art, provides a kind of electronic circuit that can be applied to have than big direct-current component to use transformer.
The technical scheme that the present invention adopted is: the present invention includes two semicircular ring ferrite cores of butt joint each other; Between two faying faces that dock each other of semicircular ring ferrite core, respectively put a rectangular-shaped permanent-magnet ferrite sheet that has magnetized; These two permanent-magnet ferrite sheets are consistent at the magnetic direction that two semicircular ring ferrite magnetic interior portion of docking are produced, and the magnetic direction that direct current produced in magnetic direction that it produced and the Transformer Winding is opposite.
The invention has the beneficial effects as follows: because these two permanent-magnet ferrite sheets magnetic direction that direct current produced in the magnetic direction that produced of two semicircular ring ferrite magnetic interior portion of butt joint and Transformer Winding is opposite; Therefore; Some is offset the magnetic field that direct current produced in the Transformer Winding by the magnetic field that the permanent-magnet ferrite sheet is produced, thereby can make in the Transformer Winding through bigger direct current.Through the inventive method, can improve the dc superposition characteristic of transformer greatly, transformer can be allowed through bigger direct current.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Fig. 1 is that two semicircular ring ferrite cores and two permanent-magnet ferrite sheets are combined into the ferrite core structural representation.
Embodiment
In Fig. 1; Two semicircular ring ferrite cores 1; Between its two faying faces that dock each other; Be placed with two rectangular-shaped permanent-magnet ferrite sheets 2 and 2 that magnetized ', the magnetic direction that these two permanent-magnet ferrite sheets produce in the heart at two semicircular ring ferrite magnetics is consistent, and the magnetic direction that direct current produced in magnetic direction that it produced and the Transformer Winding is opposite.Because some is offset the magnetic field that direct current produced in the Transformer Winding by the magnetic field that the permanent-magnet ferrite sheet is produced, thereby can make in the Transformer Winding through bigger direct current.Through the inventive method, can improve the dc superposition characteristic of transformer greatly, transformer can be allowed through bigger direct current.
Claims (1)
1. a transformer is used ferrite core; It is characterized in that: comprise two semicircular ring ferrite cores (1); Between its two faying faces that dock each other; Be placed with two rectangular-shaped permanent-magnet ferrite sheet (2) and (2 ') of having magnetized, the magnetic direction that these two permanent-magnet ferrite sheets produce in the heart at two semicircular ring ferrite magnetics is consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110134722 CN102306534A (en) | 2011-05-20 | 2011-05-20 | Ferrite magnetic core for transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110134722 CN102306534A (en) | 2011-05-20 | 2011-05-20 | Ferrite magnetic core for transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102306534A true CN102306534A (en) | 2012-01-04 |
Family
ID=45380378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110134722 Pending CN102306534A (en) | 2011-05-20 | 2011-05-20 | Ferrite magnetic core for transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102306534A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543376A (en) * | 2012-02-22 | 2012-07-04 | 临沂中瑞电子有限公司 | Differential-mode choking coil magnetic core for LEDs |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1343994A (en) * | 2000-09-08 | 2002-04-10 | 株式会社东金 | Inductance componnet having permanent-magnet for applicating magnetic deflection outside of exciting coil |
| JP2002170719A (en) * | 2000-11-30 | 2002-06-14 | Tokin Corp | Inductance part |
| JP2003124041A (en) * | 2001-10-19 | 2003-04-25 | Nec Tokin Corp | Inductor part |
| CN202067636U (en) * | 2011-05-20 | 2011-12-07 | 张家港市众力磁业有限公司 | Ferrite magnetic core for transformer |
-
2011
- 2011-05-20 CN CN 201110134722 patent/CN102306534A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1343994A (en) * | 2000-09-08 | 2002-04-10 | 株式会社东金 | Inductance componnet having permanent-magnet for applicating magnetic deflection outside of exciting coil |
| JP2002170719A (en) * | 2000-11-30 | 2002-06-14 | Tokin Corp | Inductance part |
| JP2003124041A (en) * | 2001-10-19 | 2003-04-25 | Nec Tokin Corp | Inductor part |
| CN202067636U (en) * | 2011-05-20 | 2011-12-07 | 张家港市众力磁业有限公司 | Ferrite magnetic core for transformer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543376A (en) * | 2012-02-22 | 2012-07-04 | 临沂中瑞电子有限公司 | Differential-mode choking coil magnetic core for LEDs |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120104 |