CN207134224U - A kind of transformer of low drain sense - Google Patents
A kind of transformer of low drain sense Download PDFInfo
- Publication number
- CN207134224U CN207134224U CN201720838094.9U CN201720838094U CN207134224U CN 207134224 U CN207134224 U CN 207134224U CN 201720838094 U CN201720838094 U CN 201720838094U CN 207134224 U CN207134224 U CN 207134224U
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- CN
- China
- Prior art keywords
- coil
- transformer
- primary
- secondary coil
- magnetic core
- 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 - Fee Related
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Abstract
It the utility model is related to transformer technology field, especially a kind of transformer of low drain sense, the transformer coil frame of magnetic core groove is provided with including center, magnetic core is plugged with magnetic core groove, primary coil and secondary coil are arranged with described coil rack, and it is arranged with accessory power supply winding in outermost, the coiling Surface coating of described primary coil and/or secondary coil has insulating materials, together with described primary coil is twisted with secondary coil and together about being located on coil rack, the twisted outside of primary coil and secondary coil is also arranged with insulating tape, transformer provided by the utility model, improve the efficient coupling area between primary and secondary coil, the leakage inductance of transformer can be significantly reduced, in addition, primary or secondary interlayer distribution capacity can be reduced, promote the reduction of the unwanted oscillation in circuit, improve EMI；Described primary and secondary coil outer is coated with insulating materials, is effectively reduced electromagnetic interference.
Description
Technical field
Transformer technology field is the utility model is related to, especially a kind of transformer of low drain sense.
Background technology
Transformer is to convert alternating voltage, electric current and the device of impedance, when being connected with alternating current in primary coil, iron core
Exchange flux is just produced in (or magnetic core), makes to induce voltage (or electric current) in secondary coil.Transformer is by iron core (or magnetic core)
Formed with coil, coil has two or more windings, wherein connect the winding of power supply primary coil, remaining winding
Secondary coil.In generator, either coil movement by magnetic field or Movement in Magnetic Field by fixed coil, can be in coil
Induced potential, this two kinds of situations, the value of magnetic flux is constant, but the magnetic flux quantity being mutually crosslinked with coil has variation, and this is mutual inductance
The principle answered.Transformer is exactly that one kind utilizes undesirable mutual electromagnetic inductance effect, alternating voltage, electric current and the device of impedance.
Wherein, transformer can produce the phenomenon of leakage inductance, when the coefficient of coup of primary coil and secondary coil is less than 1, become
The coil sections of depressor are the effect that will not produce transformation, and the only similar effect for suppressing inductance, such a inductance is leakage inductance, is
Ensure that transformer can effectively work, and lift the inductive coupling ability of transformer, it is necessary to reduce the generation of leakage inductance, to subtract
The energy loss of few voltage conversion.In addition, traditional transformer is generally provided with one in the primary coil or the secondary coil outer cover
Sleeve pipe, or in setting an at least barricade on the transformer framework, effectively to reach the purpose of insulation, but such a mode adds
Cost and the process of processing, and the time of processing is expended, therefore, reducing the leakage inductance in transformer and effectively reducing transformer
Processing cost and simplified technique turn into the technical problem of those skilled in the art's urgent need to resolve.
Utility model content
For the problems of the prior art, the purpose of this utility model is to provide a kind of transformer of low drain sense.
To achieve these goals, the technical solution adopted in the utility model is：A kind of transformer of low drain sense, including in
The heart is provided with the transformer coil frame of magnetic core groove, is plugged with magnetic core in magnetic core groove, primary line is arranged with described coil rack
Circle and secondary coil, and it is arranged with the coiling table of accessory power supply winding, described primary coil and/or secondary coil in outermost
Bread is covered with insulating materials, together with described primary coil is twisted with secondary coil and together about being located on coil rack, just
The twisted outside of level coil and secondary coil is also arranged with insulating tape.
Preferably, the insulating materials is selected from polyvinyl chloride, polyethylene, polypropylene, polystyrene, poly terephthalic acid second
At least one of PET plastic film.
Preferably, the thickness of the surface coated insulating materials of coiling of described primary coil and secondary coil is 50-100
μm。
Preferably, shielding copper foil is provided between described coil rack and primary and secondary coil, the length for shielding copper foil is line
The 0.5-0.8 circles of ring framework.
Preferably, described coil rack is provided with first, second barricade, first, second described barricade and coil bone
The region that frame encloses supplies primary and secondary coil winding.
Preferably, be provided with some legs on the outside of described first, second barricade, described leg respectively with it is primary and secondary
Coil is connected.
Compared with prior art, transformer provided by the utility model, primary and secondary coil line it is twisted in winding in coil bone
On frame, the efficient coupling area between primary and secondary coil is improved, the leakage inductance of transformer can be significantly reduced, in addition, described
Primary and secondary it is twisted be beneficial to reduce primary or secondary interlayer distribution capacity afterwards together, promote subtracting for the unwanted oscillation in circuit
It is few, improve EMI；Described primary and secondary coil outer is coated with insulating materials, is effectively reduced electromagnetic interference.
Brief description of the drawings
Fig. 1 is the partial sectional view of transformer provided by the utility model；
Fig. 2 is the schematic diagram of transformer provided by the utility model；
Label declaration in figure：1- magnetic cores, 10- coil racks, 11- magnetic core grooves, the barricades of 12- first, the barricades of 13- second,
121- legs, 20- primary coils, 30- secondary coils, 40- accessory power supply windings, 50- insulating materials, 60- insulating tapes, 70-
Shield copper foil.
Embodiment
In order that technological means, creation characteristic, reached purpose and effect that the utility model is realized are easy to understand, under
Face combines and is specifically illustrating, and furthers elucidate the utility model.
As shown in Figure 1, 2, the utility model provides a kind of transformer of low drain sense, including center is provided with magnetic core groove 11
Transformer coil frame 10, be plugged with magnetic core 1 in magnetic core groove 11, be arranged with described coil rack 10 primary coil 20 and time
Level coil 30, and it is arranged with accessory power supply winding 40, the coiling of described primary coil 20 and/or secondary coil 30 in outermost
Surface coating has insulating materials 50, together with described primary coil 20 is twisted with secondary coil 30 and together about being located at coil bone
On frame 10, the twisted outside of primary coil 20 and secondary coil 30 is also arranged with insulating tape 60.
Compared to the winding method of the primary and secondary coil of transformer of the prior art, transformation provided by the utility model
Device, primary and secondary coil 20,30 is twisted together and together about being located on coil rack 10, improves both efficient coupling faces
Product, greatly reduce the leakage inductance phenomenon of transformer；In addition, described primary coil 20 and the coiling surface bag of secondary coil 30
Insulating materials 50 is covered with, electromagnetic interference can be effectively reduced.
Further, insulating materials 50 described in the utility model is selected from polyvinyl chloride, polyethylene, polypropylene, polyphenyl second
At least one of alkene, polyethylene terephthalate plastic sheeting, above plastic film material all have excellent insulation
Performance, for being coated on the outer surface of primary coil 20 or secondary coil 30, reduce electromagnetic interference to transformer normal work
Influence.
Further, the surface coated insulation of coiling of the primary coil 20 and secondary coil 30 described in the utility model
The thickness of material 50 is 50-100 μm.
When further, in order to reduce transformer normal work, the influence between magnetic core and primary coil, described coil
Shielding copper foil 70 is provided between skeleton 10 and primary and secondary coil 20,30, the length of shielding copper foil 70 is the 0.5- of coil rack
0.8 circle.
Further, the coil rack 10 described in the utility model is provided with first, second barricade 12,13, described
First, second barricade 12,13 supplies primary and secondary coil 20,30 windings with the region that coil rack 10 encloses, in this way, can be square
Just the winding of progress coil.
Further, the outside of first, second barricade 12,13 described in the utility model is provided with some legs 121, institute
The leg 121 stated is connected with primary and secondary coil 20,30 respectively.
The characteristics of general principle of the present utility model, principal character and the utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification
Simply illustrate principle of the present utility model, on the premise of the spirit and scope of the utility model is not departed from, the utility model is also
Various changes and modifications are had, these changes and improvements are both fallen within claimed the scope of the utility model.This practicality is new
The claimed scope of type is by appended claims and its equivalent thereof.
Claims (5)
1. a kind of transformer of low drain sense, including center are provided with the transformer coil frame (10) of magnetic core groove (11), magnetic core groove
(11) magnetic core (1) is plugged with, is arranged with primary coil (20) and secondary coil (30) on described coil rack (10), and in
Outermost is arranged with accessory power supply winding (40), it is characterised in that：Described primary coil (20) and/or secondary coil (30)
Coiling Surface coating has an insulating materials (50), described primary coil (20) and secondary coil (30) it is twisted together and together about
It is located on coil rack (10), the twisted outside of primary coil (20) and secondary coil (30) is also arranged with insulating tape (60).
2. the transformer of low drain sense according to claim 1, it is characterised in that：Described primary coil (20) and secondary wire
The thickness for enclosing the surface coated insulating materials of coiling (50) of (30) is 50-100 μm.
3. the transformer of low drain sense according to claim 1, it is characterised in that：Described coil rack (10) with it is first, secondary
Shielding copper foil (70) is provided between level coil (20,30), the length of shielding copper foil (70) is enclosed for the 0.5-0.8 of coil rack.
4. the transformer of low drain sense according to claim 1, it is characterised in that：Described coil rack (10) is provided with the
First, the second barricade (12,13), at the beginning of the region confession that first, second described barricade (12,13) encloses with coil rack (10),
Secondary coil (20,30) winding.
5. the transformer of low drain sense according to claim 4, it is characterised in that：Described first, second barricade (12,13)
Outside is provided with some legs (121), and described leg (121) is connected with primary and secondary coil (20,30) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720838094.9U CN207134224U (en) | 2017-07-11 | 2017-07-11 | A kind of transformer of low drain sense |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720838094.9U CN207134224U (en) | 2017-07-11 | 2017-07-11 | A kind of transformer of low drain sense |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207134224U true CN207134224U (en) | 2018-03-23 |
Family
ID=61634024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720838094.9U Expired - Fee Related CN207134224U (en) | 2017-07-11 | 2017-07-11 | A kind of transformer of low drain sense |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207134224U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108257465A (en) * | 2018-04-12 | 2018-07-06 | 常州纺织服装职业技术学院 | The quick detachable teaching transformer of twin coil |
| CN111768969A (en) * | 2020-06-18 | 2020-10-13 | 北京控制工程研究所 | Hall thruster excitation coil winding method |
-
2017
- 2017-07-11 CN CN201720838094.9U patent/CN207134224U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108257465A (en) * | 2018-04-12 | 2018-07-06 | 常州纺织服装职业技术学院 | The quick detachable teaching transformer of twin coil |
| CN111768969A (en) * | 2020-06-18 | 2020-10-13 | 北京控制工程研究所 | Hall thruster excitation coil winding method |
| CN111768969B (en) * | 2020-06-18 | 2022-07-29 | 北京控制工程研究所 | Hall thruster excitation coil winding method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20180323 Termination date: 20200711 |