CN205264477U - Planar transformer - Google Patents
Planar transformer Download PDFInfo
- Publication number
- CN205264477U CN205264477U CN201520888257.5U CN201520888257U CN205264477U CN 205264477 U CN205264477 U CN 205264477U CN 201520888257 U CN201520888257 U CN 201520888257U CN 205264477 U CN205264477 U CN 205264477U
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- coil
- secondary coil
- magnetic core
- planar transformer
- cake structure
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Abstract
The utility model provides a planar transformer, includes: drain pan, time magnetic core, printed circuit board coil, secondary coil and last magnetic core, its characterized in that: be equipped with cake structure secondary coil between printed circuit board coil and the last magnetic core. This kind of planar transformer who adopts cake structure secondary coil, because the variation of the reducible coil winding in -process of cake structure secondary coil, the maximum uniformity of guaranteeing technology reduces the distributed constant variation of coil itself. After planar transformer adopted this kind of cake structure secondary coil, the electromagnetic interference and the common mode noise that satisfy transformer complete machine performance were up to standard, requirement that the uniformity is high. And planar transformer manufacturing cost at the bottom of the degradable.
Description
Technical field
The utility model relates to transformer, especially a kind of flat surface transformer.
Background technology
Existing flat surface transformer is made up of drain pan, lower magnetic core, printed wire board coil, printed wire board coil, secondary coil and upper magnetic core conventionally. Described secondary coil structure has two kinds, and one is to realize by the direct layout of printed substrate; A kind of is the square structure line cake that adopts three layer insulation wire to be made into. The former uniformity is high but cost costliness and required size space are larger, and to meet the safety requirement of product, shortcoming is the miniaturization that is unfavorable for product; Square structure line cake secondary coil is because gap between insulated wire is large, although cost of manufacture is cheap, homogeneity of product is poor, has influence on the distributed constant of transformer itself, as distribution capacity and leakage inductance etc., easily cause the electromagnetic interference of transformer overall performance and common-mode noise to exceed standard.
Utility model content
Technical problem to be solved in the utility model is the defect that makes up above-mentioned prior art, and the flat surface transformer that a kind of volume is little and homogeneity of product is high is provided.
Technical problem of the present utility model is solved by the following technical programs.
This flat surface transformer, comprising: drain pan, lower magnetic core, printed wire board coil, secondary coil and upper magnetic core.
The feature of this flat surface transformer is:
Between described printed wire board coil and upper magnetic core, be provided with cake structure secondary coil.
Technical problem of the present utility model is solved by following further technical scheme.
Described cake structure secondary coil turns to by self-adhesion three layer insulation wire the moulding that is heating and curing after line cake.
The utility model beneficial effect is compared with prior art:
The flat surface transformer of this employing cake structure secondary coil, because cake structure secondary coil can reduce the variation in coil winding process, has farthest ensured the uniformity of technique, reduces the distributed constant variation of coil itself. Flat surface transformer adopts after this cake structure secondary coil, and the electromagnetic interference and the common-mode noise that meet transformer overall performance are up to standard, the requirement that uniformity is high, and baseplane transformer manufacturing cost can be fallen.
Brief description of the drawings
Fig. 1 is flat surface transformer structural representation;
Fig. 2 is the secondary coil structure schematic diagram of flat surface transformer shown in Fig. 1.
Detailed description of the invention
Embodiment: from accompanying drawing 1 be clear that the structure of the utility model flat surface transformer and existing like product basic identical, comprising: drain pan 1, lower magnetic core 2, printed wire board coil 3 and upper magnetic core 5.
Difference is: between printed wire board coil 3 and upper magnetic core 5, be provided with cake structure secondary coil 4. Described cake structure secondary coil 4 as shown in the figure, turns to by self-adhesion three layer insulation wire 6 moulding that is heating and curing after line cake.
The installation relation of the each parts of described flat surface transformer is identical with existing like product.
Above content is in conjunction with concrete preferred embodiment further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations. For the utility model person of an ordinary skill in the technical field; make without departing from the concept of the premise utility some alternative or obvious modification that are equal to; and performance or purposes identical, all should be considered as belonging to the utility model by the definite scope of patent protection of submitted to claims.
Claims (2)
1. a flat surface transformer, comprising: drain pan, lower magnetic core, printed wire board coil, secondary coil and upper magnetic core, is characterized in that: between described printed wire board coil and upper magnetic core, be provided with cake structure secondary coil.
2. flat surface transformer according to claim 1, is characterized in that: described cake structure secondary coil turns to by self-adhesion three layer insulation wire the moulding that is heating and curing after line cake.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201520888257.5U CN205264477U (en) | 2015-11-09 | 2015-11-09 | Planar transformer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201520888257.5U CN205264477U (en) | 2015-11-09 | 2015-11-09 | Planar transformer |
Publications (1)
Publication Number | Publication Date |
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CN205264477U true CN205264477U (en) | 2016-05-25 |
Family
ID=56005993
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201520888257.5U Active CN205264477U (en) | 2015-11-09 | 2015-11-09 | Planar transformer |
Country Status (1)
Country | Link |
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CN (1) | CN205264477U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107993814A (en) * | 2017-11-15 | 2018-05-04 | 赛尔康技术(深圳)有限公司 | A kind of flat surface transformer of compensation electromagnetic interference |
-
2015
- 2015-11-09 CN CN201520888257.5U patent/CN205264477U/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107993814A (en) * | 2017-11-15 | 2018-05-04 | 赛尔康技术(深圳)有限公司 | A kind of flat surface transformer of compensation electromagnetic interference |
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Legal Events
Date | Code | Title | Description |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant |