CN202067636U - Ferrite magnetic core for transformer - Google Patents

Ferrite magnetic core for transformer Download PDF

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Publication number
CN202067636U
CN202067636U CN201120166958XU CN201120166958U CN202067636U CN 202067636 U CN202067636 U CN 202067636U CN 201120166958X U CN201120166958X U CN 201120166958XU CN 201120166958 U CN201120166958 U CN 201120166958U CN 202067636 U CN202067636 U CN 202067636U
Authority
CN
China
Prior art keywords
transformer
magnetic
ferrite
direct current
permanent
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
Application number
CN201120166958XU
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Chinese (zh)
Inventor
陆明岳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHANGJIAGANG ZHONGLI MAGNET CO Ltd
Original Assignee
ZHANGJIAGANG ZHONGLI MAGNET CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ZHANGJIAGANG ZHONGLI MAGNET CO Ltd filed Critical ZHANGJIAGANG ZHONGLI MAGNET CO Ltd
Priority to CN201120166958XU priority Critical patent/CN202067636U/en
Application granted granted Critical
Publication of CN202067636U publication Critical patent/CN202067636U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a ferrite magnetic core for a transformer, which comprises two semi-ring ferrite magnetic cores (1). Two magnetized rectangular-parallelepiped-shaped permanent-magnet ferrite sheets (2) and (2') are placed between two mutually-butted junction surfaces of the two semi-ring ferrite magnetic cores; the directions of magnetic fields generated by the two permanent-magnet ferrite sheets in the two semi-ring ferrite magnetic cores are consistent; and furthermore, the directions of the magnetic fields generated by the two permanent-magnet ferrite sheets are opposite to the direction of a magnetic field generated by a direct current in a winding of the transformer. As the magnetic field generated by the direct current in the winding of the transformer is partially counteracted by a magnetic field generated by a permanent-magnet ferrite magnetic core, the bigger direct current can pass through the winding of the transformer. Through a method provided by the utility model, the direct current superposition characteristics of the transformer can be greatly improved, so that the bigger direct current is allowed to pass through the transformer.

Description

A kind of transformer ferrite core
Technical field
The utility model relates to a kind of ferrite core, relates in particular to a kind of transformer ferrite core.
Background technology
At present, generally use ferrite core as 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 transformer to allow the direct current that passes through increasing, and this tends to cause the decline significantly of Transformer Winding inductance, thereby make 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 to open one section air gap in the magnetic circuit of magnetic core, 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 interference to other electronic devices and components.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, and a kind of electronic circuit transformer that can be applied to have big direct-current component is provided.
The technical scheme that the utility model adopted is: the utility model comprises two semicircular ring ferrite cores of butt joint mutually, between two faying faces that dock mutually 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 produced of two semicircular ring ferrite magnetic interior portion of butt joint, and the magnetic direction that direct current produced in the magnetic direction that it produced and the Transformer Winding is opposite.
The beneficial effects of the utility model are: 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 by bigger direct current.By the inventive method, can improve the dc superposition characteristic of transformer greatly, 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 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 mutually, 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 the 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 by bigger direct current.By the inventive method, can improve the dc superposition characteristic of transformer greatly, transformer can be allowed by bigger direct current.

Claims (1)

1. transformer ferrite core, it is characterized in that: comprise two semicircular ring ferrite cores (1), between its two faying faces that dock mutually, 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.
CN201120166958XU 2011-05-20 2011-05-20 Ferrite magnetic core for transformer Expired - Fee Related CN202067636U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201120166958XU CN202067636U (en) 2011-05-20 2011-05-20 Ferrite magnetic core for transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201120166958XU CN202067636U (en) 2011-05-20 2011-05-20 Ferrite magnetic core for transformer

Publications (1)

Publication Number Publication Date
CN202067636U true CN202067636U (en) 2011-12-07

Family

ID=45061493

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201120166958XU Expired - Fee Related CN202067636U (en) 2011-05-20 2011-05-20 Ferrite magnetic core for transformer

Country Status (1)

Country Link
CN (1) CN202067636U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102306534A (en) * 2011-05-20 2012-01-04 张家港市众力磁业有限公司 Ferrite magnetic core for transformer
CN102543374A (en) * 2012-02-08 2012-07-04 鸿康磁业电子(昆山)有限公司 Novel transformer
CN102945733A (en) * 2012-11-27 2013-02-27 中国船舶重工集团公司第七一二研究所 Anti-saturation magnet ring

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102306534A (en) * 2011-05-20 2012-01-04 张家港市众力磁业有限公司 Ferrite magnetic core for transformer
CN102543374A (en) * 2012-02-08 2012-07-04 鸿康磁业电子(昆山)有限公司 Novel transformer
CN102945733A (en) * 2012-11-27 2013-02-27 中国船舶重工集团公司第七一二研究所 Anti-saturation magnet ring
CN102945733B (en) * 2012-11-27 2016-01-20 中国船舶重工集团公司第七一二研究所 Anti-saturation magnet ring

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20111207

Termination date: 20160520

CF01 Termination of patent right due to non-payment of annual fee