CN203521124U - Transformer structure and charger - Google Patents
Transformer structure and charger Download PDFInfo
- Publication number
- CN203521124U CN203521124U CN201320352699.9U CN201320352699U CN203521124U CN 203521124 U CN203521124 U CN 203521124U CN 201320352699 U CN201320352699 U CN 201320352699U CN 203521124 U CN203521124 U CN 203521124U
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- China
- Prior art keywords
- winding
- charger
- auxiliary winding
- transformer
- iron 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.)
- Expired - Lifetime
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Abstract
The utility model is suitable for the technical field of chargers, and provides a transformer structure and a charger. The transformer structure comprises an iron core, a primary winding, a secondary winding and an auxiliary winding, wherein the iron core is wound with the primary winding, the secondary winding and the auxiliary winding. The auxiliary winding is located between the primary winding and the secondary winding, the primary winding is completely located inside the auxiliary winding, the secondary winding is completely located outside the auxiliary winding, and the auxiliary winding and the iron core are both connected to the quiescent point of a transformer. According to the transformer structure and the charger, the auxiliary winding is arranged between the primary winding and the secondary winding in a wound mode, and serves as a shielding layer to separate the primary winding from the secondary winding, the coupling degree of the primary winding and the secondary winding can be lowered, and therefore common-mode interference is accordingly reduced; the whole transformer structure is not required to be additionally provided with a shielding layer, and therefore the common-mode interference of the charger is reduced on the premise that cost is not increased.
Description
Technical field
The utility model belongs to charger technical field, relates in particular to a kind of transformer device structure and charger that effectively reduces common mode disturbances.
Background technology
Now a lot of terminal equipments all need to configure charger and realize accumulation of energy, but some terminal equipments are easy to be subject to the interference of the common-mode noise of charger, for example some capacitance touching control kind equipments.For reducing interference phenomenon, traditional way is to increase screen in the transformer of charger, when still design, production charger, should consider common mode disturbances, also will consider cost, and screen is set separately, will additionally increase cost.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of transformer device structure can be applicable in charger, and being intended to solution never increases the common mode disturbances that reduces charger under the prerequisite of cost.
The utility model is achieved in that a kind of transformer device structure, and described transformer device structure comprises iron core and is wrapped in armature winding, secondary winding, the auxiliary winding on described iron core; The winding position of described auxiliary winding is between described armature winding and secondary winding, and the winding position of described armature winding is positioned at the inside of described auxiliary winding completely, and the winding position of described secondary winding is positioned at the outside of described auxiliary winding completely; Described auxiliary winding, iron core are all connected to the dead point of transformer.
Further, described auxiliary winding adopts the mode of parallel winding of multiple coils to be wound around.The coil of auxiliary winding be used as the screen number of turns can be as required when inadequate again around, the coil one end having more is unsettled.
The utility model also provides a kind of charger, and it comprises a transformer, described transformer adopting transformer device structure as above.
The utility model will assist winding around between primary and secondary winding, utilize auxiliary winding as screen, primary and secondary winding is kept apart, can reduce the degree of coupling of primary and secondary winding, thereby reduction common mode disturbances, whole transformer device structure, without screen is set separately again, has therefore reduced the common mode disturbances of charger under the prerequisite that does not increase cost.Also can further will assist winding, iron core to be connected to dead point, make common mode current by assisting winding, iron core to be incorporated into transformer dead point, also can further reduce common mode disturbances.The utility model in, the common mode disturbances of low frequency section can obtain obvious improvement.
Accompanying drawing explanation
Fig. 1 is the profile of the transformer device structure that provides of the utility model.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
With reference to Fig. 1, the transformer device structure that the utility model provides comprises iron core 1 and is wrapped in armature winding 2, secondary winding 3, the auxiliary winding 4 on described iron core, wherein iron core 1 is formed by silicon steel plate packing, and armature winding 2, secondary winding 3, auxiliary winding 4 are coil.In the utility model, the winding position of auxiliary winding 4 is between described armature winding 2 and secondary winding 3, auxiliary winding is connected to the dead point of transformer, now, auxiliary winding 4 is equivalent to a screen, primary and secondary winding is kept apart, can reduce the degree of coupling of primary and secondary winding, thereby reduce common mode disturbances.Also auxiliary winding 4, iron core can be connected to the dead point of transformer simultaneously, make the common mode current producing be incorporated into dead point, can reduce common mode disturbances.For in, the common mode disturbances of low frequency section can obtain obvious improvement.
Consider skin effect and coupling, auxiliary winding 4 can parallel winding of multiple coils, with stranded wire, replaces solid conductor.
In the utility model, if the coil of auxiliary winding 4 be used as the screen number of turns can be as required when inadequate again around, the coil one end having more is unsettled.
As shown in Figure 1, between armature winding 2 and auxiliary winding 4, between auxiliary winding 4 and secondary winding 3, be equipped with insulating barrier 5.
The transformer device structure that the utility model provides can be applicable in various chargers, and the touch-screen driving frequency of capacitance touching control kind equipment generally, in 1M Hz, utilizes auxiliary winding 4 can reduce the impact of common mode disturbances on touch-screen as screen.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.
Claims (3)
1. a transformer device structure, is characterized in that, described transformer device structure comprises iron core and is wrapped in armature winding, secondary winding, the auxiliary winding on described iron core; The winding position of described auxiliary winding is between described armature winding and secondary winding, and the winding position of described armature winding is positioned at the inside of described auxiliary winding completely, and the winding position of described secondary winding is positioned at the outside of described auxiliary winding completely; Described auxiliary winding, iron core are all connected to the dead point of transformer.
2. transformer device structure as claimed in claim 1, is characterized in that, described auxiliary winding adopts the mode of parallel winding of multiple coils to be wound around.
3. a charger, is characterized in that, described charger comprises a transformer, the transformer device structure of described transformer adopting as described in claim 1 to 2 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320352699.9U CN203521124U (en) | 2013-06-19 | 2013-06-19 | Transformer structure and charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320352699.9U CN203521124U (en) | 2013-06-19 | 2013-06-19 | Transformer structure and charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203521124U true CN203521124U (en) | 2014-04-02 |
Family
ID=50380015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320352699.9U Expired - Lifetime CN203521124U (en) | 2013-06-19 | 2013-06-19 | Transformer structure and charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203521124U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107808759A (en) * | 2017-12-11 | 2018-03-16 | 东莞市港奇电子有限公司 | A kind of transformer and a kind of Switching Power Supply |
-
2013
- 2013-06-19 CN CN201320352699.9U patent/CN203521124U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107808759A (en) * | 2017-12-11 | 2018-03-16 | 东莞市港奇电子有限公司 | A kind of transformer and a kind of Switching Power Supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |