CN202102849U - High-frequency switching power supply transformer - Google Patents
High-frequency switching power supply transformer Download PDFInfo
- Publication number
- CN202102849U CN202102849U CN2011201249174U CN201120124917U CN202102849U CN 202102849 U CN202102849 U CN 202102849U CN 2011201249174 U CN2011201249174 U CN 2011201249174U CN 201120124917 U CN201120124917 U CN 201120124917U CN 202102849 U CN202102849 U CN 202102849U
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- winding
- iron core
- radiation
- power supply
- switching power
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Abstract
The utility model relates to a high-frequency switching power supply transformer. The transformer comprises an iron core, an iron core skeleton, a primary winding, and a plurality of secondary windings, and is characterized in that a metal shielding layer is wound on the iron core skeleton except the primary winding and the secondary windings with radiation; and one end of the metal shielding layer is electrically connected with the hot end of the primary winding. Through adopting the shielding layer to shield the radiation produced by the primary and the secondary windings, the radiation is prevented from outward diffusion. The high-frequency switching power supply transformer has the advantages of reasonable design, simple structure and good shielding effect. In addition, the shielding layer and the hot end of the primary winding are electrically connected, so that the radiation produced by the windings can be fully shielded, and the radiation is prevented from disturbing normal work of other devices.
Description
Technical field:
The utility model belongs to electric and electronic technical field, particularly a kind of high-frequency switch power transformer.
Background technology:
Transformer includes iron core and is wrapped in elementary winding and the some groups of secondary winding on the iron core skeleton, realizes transformation and NE BY ENERGY TRANSFER.The high-frequency switch power transformer operating frequency is about 80KHZ; There is the electromagenetic wave radiation problem, some sophisticated electronicses especially, it requires power supply that good electromagnetic wave shielding will be arranged; Purify; In order to avoid the accurate sensitive operation of jamming equipment, for this reason, the transformer that needs design to have the shielding electromagnetic wave structure.
Summary of the invention:
The purpose of the utility model be design a kind of the iron core skeleton with have a kind of high-frequency switch power transformer that is coated with screen outside the winding of radiation.
The utility model technical scheme is achieved in that a kind of high-frequency switch power transformer; Comprise iron core, iron core skeleton, elementary winding and some secondary winding; It is characterized in that on the iron core skeleton, elementary winding and having outside the secondary winding of radiation; Be wound with the layer of metal screen, an end of this metal screen layer is electrically connected with elementary winding hot end.Through setting up of screen, radiation shield elementary, that secondary winding produces, avoid the radiation direction outdiffusion.
Said metal screen layer is the enamelled wire winding, perhaps wide copper sheet, perhaps both alternating structures.
The order of the outer winding technique of said iron core skeleton is enamelled wire winding screen, elementary winding, wide copper sheet screen, the secondary winding with radiation, wide copper sheet screen, auxiliary winding successively.
The utlity model has characteristics reasonable in design, simple in structure, that shield effectiveness is good, screen is electrically connected with elementary winding hot end, fully shields the radiation that winding produces, and avoids interference the operate as normal of other device.
Description of drawings:
Below in conjunction with concrete legend the utility model is further specified:
Fig. 1 high-frequency switch power transformer winding technique sketch map
Wherein
1-iron core 2-iron core skeleton
The elementary winding 4-of 3-has the secondary winding of radiation
5-assists winding 6-enamelled wire winding
The wide copper sheet of 7-
Embodiment:
With reference to Fig. 1, high-frequency switch power transformer comprises iron core 1, iron core skeleton 2, elementary winding 3 and some secondary winding, and secondary winding is divided into two types, is primary feedback secondary winding 4 and the auxiliary winding 5 with radiation; Wherein on iron core skeleton 2, elementary winding 3 and having outside the secondary winding 4 of radiation, be wound with the layer of metal screen, an end of this metal screen layer is electrically connected with elementary winding 3 hot ends.Said metal screen layer is an enamelled wire winding 6, perhaps wide copper sheet 7.
The best coiling order of high-frequency switch power transformer is successively: iron core skeleton 2 is outer around enamelled wire winding 6 screens, elementary winding 3, wide copper sheet 7 screens, the secondary winding 4 with radiation, wide copper sheet 7 screens, auxiliary winding 5.
Claims (3)
1. high-frequency switch power transformer; Comprise iron core, iron core skeleton, elementary winding and some secondary winding; It is characterized in that on the iron core skeleton, elementary winding and having outside the secondary winding of radiation; Be wound with the layer of metal screen, an end of this metal screen layer is electrically connected with elementary winding hot end.
2. a kind of high-frequency switch power transformer according to claim 1 is characterized in that metal screen layer is the enamelled wire winding, perhaps wide copper sheet; Perhaps both alternating structures.
3. a kind of high-frequency switch power transformer according to claim 1 and 2, the order that it is characterized in that the outer winding technique of iron core skeleton are enamelled wire winding screen, elementary winding, wide copper sheet screen, the secondary winding with radiation, wide copper sheet screen, auxiliary winding successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201249174U CN202102849U (en) | 2011-04-25 | 2011-04-25 | High-frequency switching power supply transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201249174U CN202102849U (en) | 2011-04-25 | 2011-04-25 | High-frequency switching power supply transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202102849U true CN202102849U (en) | 2012-01-04 |
Family
ID=45388853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201249174U Expired - Fee Related CN202102849U (en) | 2011-04-25 | 2011-04-25 | High-frequency switching power supply transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202102849U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106409485A (en) * | 2016-10-12 | 2017-02-15 | 昆山联滔电子有限公司 | Transformer |
| CN110301019A (en) * | 2017-05-05 | 2019-10-01 | 华为技术有限公司 | A kind of transformer and Switching Power Supply |
-
2011
- 2011-04-25 CN CN2011201249174U patent/CN202102849U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106409485A (en) * | 2016-10-12 | 2017-02-15 | 昆山联滔电子有限公司 | Transformer |
| CN110301019A (en) * | 2017-05-05 | 2019-10-01 | 华为技术有限公司 | A kind of transformer and Switching Power Supply |
| CN110301019B (en) * | 2017-05-05 | 2021-07-09 | 华为技术有限公司 | Transformer and switching power supply |
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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: 20120104 Termination date: 20160425 |