CN203721415U - Differential mode and common mode integrated inductor - Google Patents
Differential mode and common mode integrated inductor Download PDFInfo
- Publication number
- CN203721415U CN203721415U CN201420006394.7U CN201420006394U CN203721415U CN 203721415 U CN203721415 U CN 203721415U CN 201420006394 U CN201420006394 U CN 201420006394U CN 203721415 U CN203721415 U CN 203721415U
- Authority
- CN
- China
- Prior art keywords
- common mode
- inductance
- sides
- side column
- center pillar
- Prior art date
- 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
Links
- 238000003032 molecular docking Methods 0.000 claims description 10
- 239000003822 epoxy resin Substances 0.000 claims description 7
- 229920000647 polyepoxide Polymers 0.000 claims description 7
- 210000001503 joint Anatomy 0.000 abstract 3
- 230000004907 flux Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Abstract
The utility model relates to the technical field of inductors, in particular to a differential mode and common mode integrated inductor which comprises two E-shaped magnetic cores. Every E-shaped magnetic core comprises a bottom column, side columns positioned on two sides and extending out of the bottom column and center columns in the middle. Openings of the two E-shaped magnetic cores are opposite, and the side columns on two sides of the E-shaped magnetic cores are in butt joint to be a whole. The side columns on two sides of the E-shaped magnetic cores after butt joint are respectively sleeved with a hollow coil, the lengths of the center columns of the two E-shaped magnetic cores are smaller than those of the side columns on two sides, and the side columns form an air gap between the center columns after butt joint. According to the differential mode and common mode integrated inductor, the sizes of components are reduced, a differential mode inductor and a common mode inductor are integrated, and the safety requirements of all voltage range input can be met.
Description
[technical field]
The utility model relates to inductance technical field, particularly relates to a kind of poor common mode one inductance.
[background technology]
In prior art, generally need to use a common mode inductance and a differential mode inductance to remove to leach unwanted signal.Because traditional inductance is to use enamelled wire around to skeleton, refill magnetic core, in order to meet safe distance requirement, have to increase the volume of single components and parts.This method had both increased volume and the quantity of product, increased again cost.
Given this, overcoming the existing defect of the prior art is the art problem demanding prompt solution.
[utility model content]
The technical problems to be solved in the utility model is to provide a kind of poor common mode one inductance, meets the safety requirement of full voltage range input with less volume.
The utility model adopts following technical scheme:
A kind of poor common mode one inductance, comprises 2 E shape magnetic cores, and described each E shape magnetic core comprises a foundation, extends side column and the middle center pillar of both sides from foundation; Described 2 E shape magnetic core openings are oppositely arranged, and the side column of E shape magnetic core both sides is docking integrally;
On the side column of the both sides of the E shape magnetic core after described docking, be respectively installed with an air core coil; The length of the center pillar of described 2 E shape magnetic cores is less than the length of the side column of both sides, after side column docking, forms the air gap between center pillar.
Further, described poor common mode one inductance does not comprise skeleton, and described air core coil is not wound on skeleton.
Further, scribble epoxy resin layer on the surface of the magnetic core of described suit air core coil.
Further, the thickness of described epoxy resin layer is 0.3mm.
Further, be 0.2-1.0mm along the length of the described air gap of center pillar direction.
Further, be 0.5mm along the length of the described air gap of center pillar direction.
Further, described two air core coils have the identical number of turn, and two air core coils are set in the symmetric position of side column of both sides.
Further, the Same Name of Ends of described two air core coils is positioned at same one end of the side column of both sides.
Further, the cross section of the side column of described both sides is circular, and the cross section of foundation and center pillar is square.
Compared with prior art, the beneficial effects of the utility model are: adopt coating magnetic core suit air core coil to replace traditional skeleton, coiling and magnetic core pattern, with a components and parts replacement differential mode inductance and common mode inductance, both reduced the volume of components and parts, differential mode and common mode inductance one, can meet again the safety requirement of full voltage range input.
[brief description of the drawings]
Fig. 1 is the Facad structure schematic diagram of the poor common mode one of the utility model embodiment inductance.
Fig. 2 is the structure schematic diagram of the poor common mode one of the utility model embodiment inductance.
Fig. 3 is the fundamental diagram that the poor common mode one of the utility model embodiment inductance adds the common-mode signal that polarity is identical, amplitude is identical.
Fig. 4 is the fundamental diagram that the poor common mode one of the utility model embodiment inductance adds the difference mode signal that polarity is contrary, amplitude is identical.
Reference numeral:
10-E shape magnetic core, 11-foundation,
12-side column, 13-center pillar,
20-air core coil, 30-air gap.
[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.
In addition,, in each execution mode of described the utility model, involved technical characterictic just can combine mutually as long as do not form each other conflict.
As shown in Figure 1, 2, the utility model provides a kind of poor common mode one inductance, comprises 2 E shape magnetic cores 10, and each E shape magnetic core 10 comprises a foundation 11, extends side column 12 and the middle center pillar 13 of both sides from foundation 11; 2 E shape magnetic core 10 openings are oppositely arranged, and the side column 12 of E shape magnetic core 10 both sides is docking integrally, and forms the body of poor common mode one inductance of the present utility model.On the side column 12 of the both sides of the E shape magnetic core 10 after docking, be respectively installed with an air core coil 20; The length of the center pillar 13 of 2 E shape magnetic cores 10 is less than the length of the side column 12 of both sides, therefore after side column 12 docking by the air gap 30 forming between center pillar 13.In the present embodiment, this difference common mode one inductance has been cancelled traditional skeleton, and air core coil 20 is not wound on skeleton.
In a preferred embodiment, scribble epoxy resin layer on side column 12 surfaces of both sides of the magnetic core of suit air core coil 20, the thickness of this epoxy resin layer is preferably 0.3mm.Magnetic core is coated with epoxy resin layer can meet the safety requirements that full voltage is inputted.
In the present embodiment, two air core coils 20 have the identical number of turn, are set in the symmetric position of side column 12 of both sides, and the Same Name of Ends of two air core coils 20 is positioned at same one end of the side column 12 of both sides.The cross section of the side column 12 of both sides is circular, and the cross section of foundation 11 and center pillar 13 is square.
In the time of assembling product, use the air core coil 20 having wound to be assembled on the side column 12 of both sides of the E shape magnetic core 10 after docking, the center pillar 13 of magnetic core has air gap 30, can obtain different differential mode inductance values.
According to electricity, magnetic principle, as shown in Figure 3, in the time adding the common-mode signal that polarity is identical, amplitude is identical, owing to having air gap at center pillar, cause the magnetic resistance of center pillar to increase, so most magnetic flux is by the side column of magnetic core, according to right-hand rule, to produce the magnetic flux Ф 1 of homophase, total magnetic flux is by the twice that is single coil flux, so will present a high common code impedance.
As shown in Figure 4, in the time adding the difference mode signal that polarity is contrary, amplitude is identical, according to right-hand rule, anti-phase magnetic flux Ф 2 will be produced, both sides are superimposed by center pillar, because center pillar has increased air gap, so most of magnetic pressure is fallen at air gap, by changing the size of air gap, both can change differential mode inductance size and also can change DC superposition characteristic (being the ability of resistance to bias current).In a preferred embodiment, be 0.2-1.0mm along the length of the air gap of center pillar direction, for example in the present embodiment, the Design of length along the air gap of center pillar direction is 0.5mm.Gas length can be done suitable adjustment based on the actual application requirements.
The utility model embodiment uses coating magnetic core to add that air core coil replaces traditional skeleton, coiling and magnetic core pattern, so not only can reduce volume, differential mode and the common mode inductance one of components and parts but also can meet the safety requirements that full voltage range is inputted.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any amendments 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 (9)
1. differ from a common mode one inductance, it is characterized in that, comprise 2 E shape magnetic cores, described each E shape magnetic core comprises a foundation, extends side column and the middle center pillar of both sides from foundation; Described 2 E shape magnetic core openings are oppositely arranged, and the side column of E shape magnetic core both sides is docking integrally;
On the side column of the both sides of the E shape magnetic core after described docking, be respectively installed with an air core coil; The length of the center pillar of described 2 E shape magnetic cores is less than the length of the side column of both sides, after side column docking, forms the air gap between center pillar.
2. poor common mode one inductance as claimed in claim 1, is characterized in that, described poor common mode one inductance does not comprise skeleton, and described air core coil is not wound on skeleton.
3. poor common mode one inductance as claimed in claim 1, is characterized in that, scribbles epoxy resin layer on the surface of the magnetic core of described suit air core coil.
4. poor common mode one inductance as claimed in claim 3, is characterized in that, the thickness of described epoxy resin layer is 0.3mm.
5. poor common mode one inductance as claimed in claim 1, is characterized in that, is 0.2-1.0mm along the length of the described air gap of center pillar direction.
6. poor common mode one inductance as claimed in claim 5, is characterized in that, is 0.5mm along the length of the described air gap of center pillar direction.
7. poor common mode one inductance as claimed in claim 1, is characterized in that, described two air core coils have the identical number of turn, and two air core coils are set in the symmetric position of side column of both sides.
8. poor common mode one inductance as claimed in claim 1, is characterized in that, the Same Name of Ends of described two air core coils is positioned at same one end of the side column of both sides.
9. poor common mode one inductance as claimed in claim 1, is characterized in that, the cross section of the side column of described both sides is circular, and the cross section of foundation and center pillar is square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420006394.7U CN203721415U (en) | 2014-01-06 | 2014-01-06 | Differential mode and common mode integrated inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420006394.7U CN203721415U (en) | 2014-01-06 | 2014-01-06 | Differential mode and common mode integrated inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203721415U true CN203721415U (en) | 2014-07-16 |
Family
ID=51160553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420006394.7U Expired - Lifetime CN203721415U (en) | 2014-01-06 | 2014-01-06 | Differential mode and common mode integrated inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203721415U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319075A (en) * | 2014-09-19 | 2015-01-28 | 南方电网科学研究院有限责任公司 | Connecting reactor for multi-level voltage source transverter |
| CN107424776A (en) * | 2017-08-09 | 2017-12-01 | 海宁联丰东进电子有限公司 | A kind of transformer for increasing inductance value and differential mode sensibility reciprocal |
| CN107545975A (en) * | 2017-08-09 | 2018-01-05 | 海宁联丰东进电子有限公司 | A kind of magnetic core of transformer for increasing inductance value and differential mode sensibility reciprocal |
| CN107731481A (en) * | 2017-08-23 | 2018-02-23 | 广路智能科技有限公司 | A kind of Magnetic circuit topologies integrate magnet |
| CN107742570A (en) * | 2017-10-26 | 2018-02-27 | 合肥博微田村电气有限公司 | A kind of differential mode magnetic integrated inductor altogether |
| CN109102988A (en) * | 2018-08-04 | 2018-12-28 | 广东光达电气股份有限公司 | Common mode differential mode integrated reactor |
| CN109285654A (en) * | 2018-10-24 | 2019-01-29 | 遂宁普思电子有限公司 | Common mode inductance |
| US20200253002A1 (en) * | 2017-10-25 | 2020-08-06 | Electrolux Appliances Aktiebolag | Induction hob comprising an electromagnetic interference filter |
-
2014
- 2014-01-06 CN CN201420006394.7U patent/CN203721415U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319075A (en) * | 2014-09-19 | 2015-01-28 | 南方电网科学研究院有限责任公司 | Connecting reactor for multi-level voltage source transverter |
| CN104319075B (en) * | 2014-09-19 | 2017-05-24 | 南方电网科学研究院有限责任公司 | Connecting reactor for multi-level voltage source transverter |
| CN107424776A (en) * | 2017-08-09 | 2017-12-01 | 海宁联丰东进电子有限公司 | A kind of transformer for increasing inductance value and differential mode sensibility reciprocal |
| CN107545975A (en) * | 2017-08-09 | 2018-01-05 | 海宁联丰东进电子有限公司 | A kind of magnetic core of transformer for increasing inductance value and differential mode sensibility reciprocal |
| CN107731481A (en) * | 2017-08-23 | 2018-02-23 | 广路智能科技有限公司 | A kind of Magnetic circuit topologies integrate magnet |
| US20200253002A1 (en) * | 2017-10-25 | 2020-08-06 | Electrolux Appliances Aktiebolag | Induction hob comprising an electromagnetic interference filter |
| CN107742570A (en) * | 2017-10-26 | 2018-02-27 | 合肥博微田村电气有限公司 | A kind of differential mode magnetic integrated inductor altogether |
| CN109102988A (en) * | 2018-08-04 | 2018-12-28 | 广东光达电气股份有限公司 | Common mode differential mode integrated reactor |
| CN109285654A (en) * | 2018-10-24 | 2019-01-29 | 遂宁普思电子有限公司 | Common mode inductance |
| CN109285654B (en) * | 2018-10-24 | 2021-05-14 | 遂宁普思电子有限公司 | Common mode inductor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203721415U (en) | Differential mode and common mode integrated inductor | |
| CN103457454B (en) | A kind of voltage changer and common-mode noise impedance adjusting method | |
| CN106856140B (en) | Common mode and differential mode integrated inductor with double magnetic cores in three-dimensional staggered arrangement | |
| CN103871716A (en) | Integrated magnetic structure | |
| CN102610370A (en) | Composite soft magnetic core for resisting electromagnetic interference | |
| CN203760297U (en) | Integration structure of transformer and inductor | |
| CN108286932A (en) | A kind of high-precision two-part differential transformer displacement sensor | |
| CN206116134U (en) | Closed loop double - circuit inductor | |
| CN205318961U (en) | Common mode inductance ware | |
| TWI611438B (en) | Composite smoothing inductor and smoothing circuit | |
| WO2017129072A1 (en) | Foldable three-dimensional double-opening iron core | |
| CN104051138B (en) | Transformer | |
| CN106449080B (en) | The method for winding and its inductance of a kind of ring-shaped inductors | |
| CN104752045A (en) | Transformer and inductor integrating structure and realization method thereof | |
| CN106449053A (en) | High-frequency transformer | |
| CN206293235U (en) | A kind of magnetic core of transformer component and transformer with double air gaps mouthful | |
| CN106373734B (en) | High frequency transformer | |
| CN203085315U (en) | Multi-inductor array | |
| CN202275691U (en) | Magnetic core integrated with nUI | |
| CN109285675B (en) | A kind of transformer framework and magnetic integrated transformer | |
| CN209591710U (en) | A kind of common mode choke for eliminating electrostatic interference | |
| CN109473265B (en) | Transformer and assembling method | |
| US9111678B2 (en) | Planar core-type uniform external field equalizer and fabrication | |
| CN202258730U (en) | Combined high-frequency high-voltage transformer coil bobbin | |
| CN202307450U (en) | Inverting inductor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140716 |
|
| CX01 | Expiry of patent term |