CN202855506U - Common mode choke butterfly style coiling structure - Google Patents
Common mode choke butterfly style coiling structure Download PDFInfo
- Publication number
- CN202855506U CN202855506U CN 201220476644 CN201220476644U CN202855506U CN 202855506 U CN202855506 U CN 202855506U CN 201220476644 CN201220476644 CN 201220476644 CN 201220476644 U CN201220476644 U CN 201220476644U CN 202855506 U CN202855506 U CN 202855506U
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- Prior art keywords
- common mode
- winding
- mode choke
- coil
- butterfly style
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Abstract
The utility model discloses a common mode choke butterfly style coiling structure. The two ends of a ferrite ring magnetic core are coiled with a first coil and a second coil which have same turns. The first coil and the second coil respectively wind 12 turns from the middle of the two coils to two ends and rewind 10 turns to the middle of the two coils. A complete machine utilizing the common mode choke butterfly style coiling structure can pass an electro-magnetic interference (EMI) test. The EMI control effect of the common mode choke butterfly style coiling structure is better than the absorption effect of an adding screen method. The common mode choke butterfly style coil winding structure can be widely applied to refrigerator manufacturing.
Description
Technical field
The utility model relates to common mode inductance, particularly the wire winding of common mode inductance.
Background technology
In existing cold machine, more or less all can there be electromagnetic interference (EMI) to a certain degree.Electromagnetic interference mainly since due to voltage spikes and current spike cause.Traditional solution for electromagnetic interference problem is to adopt soft switch, absorption, shielding etc., and improves PCB layout etc.In addition, wire winding is also extremely important to the control electromagnetic interference.
At present in the common mode inductance of the input of cold machine, usually adopt winding structure as shown in Figure 1.On the both sides of a ferrite toroidal magnetic core 1 respectively the method for winding of coiling the first winding 2 and the second winding 3, the first windings 2 and the second winding 3 be from separately head to afterbody around 24 circles, 20 circles then unroll from afterbody to head.This winding structure can't pass through when complete machine is done the EMI experiment.
The utility model content
For the common mode inductance EMI problem not up to standard of above-mentioned employing tradition winding structure, the applicant is carrying out after the comparative analysis ripple is capable through research experiment, and the winding mode of common mode inductance has been proposed improvement, and a kind of butterfly winding structure of common mode inductance is provided.
The technical solution of the utility model is as follows:
A kind of butterfly winding structure of common mode inductance, respectively the first winding and second winding of the identical number of turn of coiling on the both sides of a ferrite toroidal magnetic core, described the first winding and the second winding are started from the centre respectively to both sides respectively around 12 circles, and 10 circles again unroll to the centre.
Useful technique effect of the present utility model is:
Test shows, adopts the complete machine of the utility model winding structure, can test by EMI.And EMI control effect ratio of the present utility model adds screen method and assimilation effect is better.The utility model can be widely used in cold machine and make industry.
Description of drawings
Fig. 1 is the schematic diagram of existing winding structure.
Fig. 2 is the schematic diagram of an embodiment of the utility model.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described further.
Fig. 2 is the schematic diagram of an embodiment of the utility model.As shown in Figure 2, distinguish the first winding 2 and second winding 3 of the identical number of turn of coiling at the right and left of ferrite toroidal magnetic core 1.Collets 4 on the ferrite toroidal magnetic core 1 are kept apart the first winding 2 and the second winding 3.The winding mode of the first winding 2 and the second winding 3 is: two windings are started from the centre of winding respectively, and respectively around 12 circles, 10 circles again unroll to the centre to both sides.
According to the difference of common mode inductance kind and performance requirement, winding turns is not limited to the circle of 12 among Fig. 2,10 circles, can carry out according to actual conditions the adjustment of coil turn, but the subject spirit of its winding structure and design do not break away from the above.
Above-described only is preferred implementation of the present utility model, and the utility model is not limited to above embodiment.Be appreciated that other improvement and variation that those skilled in the art directly derive or associate under the prerequisite that does not break away from spirit of the present utility model and design, all should think to be included within the protection range of the present utility model.
Claims (1)
1. the butterfly winding structure of a common mode inductance, it is characterized in that: at the first winding (2) and second winding (3) of the identical number of turn of the both sides of a ferrite toroidal magnetic core (1) difference coiling, described the first winding (2) and the second winding (3) are started from the centre respectively to both sides respectively around 12 circles, and 10 circles again unroll to the centre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220476644 CN202855506U (en) | 2012-09-18 | 2012-09-18 | Common mode choke butterfly style coiling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220476644 CN202855506U (en) | 2012-09-18 | 2012-09-18 | Common mode choke butterfly style coiling structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202855506U true CN202855506U (en) | 2013-04-03 |
Family
ID=47986677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220476644 Expired - Fee Related CN202855506U (en) | 2012-09-18 | 2012-09-18 | Common mode choke butterfly style coiling structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202855506U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102842410A (en) * | 2012-09-18 | 2012-12-26 | 无锡晶磊电子有限公司 | Butterfly type wire winding structure of common mode inductor |
-
2012
- 2012-09-18 CN CN 201220476644 patent/CN202855506U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102842410A (en) * | 2012-09-18 | 2012-12-26 | 无锡晶磊电子有限公司 | Butterfly type wire winding structure of common mode inductor |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20180918 |