CN202332475U - Anti-phase common mode inductor - Google Patents
Anti-phase common mode inductor Download PDFInfo
- Publication number
- CN202332475U CN202332475U CN2011204723247U CN201120472324U CN202332475U CN 202332475 U CN202332475 U CN 202332475U CN 2011204723247 U CN2011204723247 U CN 2011204723247U CN 201120472324 U CN201120472324 U CN 201120472324U CN 202332475 U CN202332475 U CN 202332475U
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- winding
- common mode
- toroidal core
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Abstract
The utility model discloses an anti-phase common mode inductor which comprises an annular magnetic core and a winding, wherein the winding comprises a first winding and a second winding, the first winding and the second winding are uniformly distributed on the two sides of the annular magnetic core, the wire feeding directions of the first winding and the second winding are opposite, i.e., the first winding feeds a wire from one side of the annular magnetic core, and the second winding feeds a wire from the other side of the annular magnetic core. The anti-phase common mode inductor disclosed by the utility model can be used for effectively reducing common mode signals generated by electronic products, improving the electric property of a circuit utilizing the inductor and reinforcing the anti-interference capability of the common mode inductor.
Description
Technical field
The utility model relates to the inductance technology, specifically is meant a kind of common mode inductance.
Background technology
In Switching Power Supply, common mode inductance (also being common mode choke) usually need be set filter the electromagnetic interference signal of common mode, existing common mode inductance is as shown in Figure 1; Two groups of inductance coils are on same iron core; And in the same side inlet wire, the number of turn is all identical with phase place, though this kind method for winding can play certain inhibitory action to common-mode signal; But effect is often undesirable, and adopts additive method also to be difficult to suppress the electromagnetic interference that Switching Power Supply itself is discharged as increasing common mode inductance etc.
The utility model content
The purpose of the utility model is to overcome above-mentioned weak point of the prior art, and a kind of antiphase common mode inductance is provided, and said common mode inductance can effectively suppress the generation of common-mode signal, improves the electromagnetic interference problem that exists on the Switching Power Supply.
The purpose of the utility model realizes through following technical scheme:
A kind of antiphase common mode inductance; Comprise toroidal core and winding; Said winding comprises first winding and second winding, and the said first coiling group and the second coiling group are evenly distributed on the both sides of said toroidal core, and the inlet wire of said first winding and second winding is in the opposite direction; Be the side inlet wire of said first winding from said toroidal core, said second winding is from the opposite side inlet wire of said toroidal core.
Preferably, the toroidal core of said toroidal core for processing by high-permeability material.
Preferably, said winding adopts copper sheet to reel and forms copper sheet surface coverage one deck insulating varnish.
The utility model compares that prior art has the following advantages and beneficial effect: can effectively reduce the common-mode signal that electronic product produces and produce, improve the circuit electrical characteristic of using this inductance, strengthen the antijamming capability of common mode inductance itself simultaneously.
Description of drawings
Structural representation for existing common mode inductance shown in Figure 1
Shown in Figure 2 is the structural representation of the utility model
Embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail, but the execution mode of the utility model is not limited thereto.
Embodiment
As shown in Figure 2; A kind of antiphase common mode inductance comprises toroidal core 1 and winding 2, and said winding comprises first winding 3 and second winding 4; The said first coiling group 3 and the second coiling group 4 are evenly distributed on the both sides of said toroidal core 1; The inlet wire of said first winding 3 and second winding 4 is in the opposite direction, and promptly said first winding is from a side inlet wire of said toroidal core 1, and said second winding is from the opposite side inlet wire of said toroidal core 1.
The toroidal core of said toroidal core 1 for processing by high-permeability material.
Said winding 2 adopts copper sheet to reel and forms, and copper sheet surface coverage one deck insulating varnish is to guarantee the insulation between the copper sheet.
The foregoing description is the utility model preferred implementation; But the execution mode of the utility model is not restricted to the described embodiments; Other any do not deviate from change, the modification done under spirit and the principle of the utility model, substitutes, combination, simplify; All should be the substitute mode of equivalence, be included within the protection range of the utility model.
Claims (3)
1. antiphase common mode inductance; Comprise toroidal core and winding; Said winding comprises first winding and second winding, and the said first coiling group and the second coiling group are evenly distributed on the both sides of said toroidal core, it is characterized in that: the inlet wire of said first winding and second winding is in the opposite direction; Be the side inlet wire of said first winding from said toroidal core, said second winding is from the opposite side inlet wire of said toroidal core.
2. a kind of antiphase common mode inductance according to claim 1 is characterized in that: the toroidal core of said toroidal core for being processed by high-permeability material.
3. a kind of antiphase common mode inductance according to claim 1 and 2 is characterized in that: said winding adopts copper sheet to reel and forms copper sheet surface coverage one deck insulating varnish.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204723247U CN202332475U (en) | 2011-11-23 | 2011-11-23 | Anti-phase common mode inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204723247U CN202332475U (en) | 2011-11-23 | 2011-11-23 | Anti-phase common mode inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202332475U true CN202332475U (en) | 2012-07-11 |
Family
ID=46444447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204723247U Expired - Fee Related CN202332475U (en) | 2011-11-23 | 2011-11-23 | Anti-phase common mode inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202332475U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10971299B2 (en) | 2017-11-21 | 2021-04-06 | Cisco Technology, Inc. | Biorthogonal windings on transformer and common mode choke for network port |
-
2011
- 2011-11-23 CN CN2011204723247U patent/CN202332475U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10971299B2 (en) | 2017-11-21 | 2021-04-06 | Cisco Technology, Inc. | Biorthogonal windings on transformer and common mode choke for network port |
| US11948728B2 (en) | 2017-11-21 | 2024-04-02 | Cisco Technology, Inc. | Biorthogonal windings on transformer and common mode choke for network port |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20121123 |