CN202930150U - Pulse transformer - Google Patents
Pulse transformer Download PDFInfo
- Publication number
- CN202930150U CN202930150U CN 201220633293 CN201220633293U CN202930150U CN 202930150 U CN202930150 U CN 202930150U CN 201220633293 CN201220633293 CN 201220633293 CN 201220633293 U CN201220633293 U CN 201220633293U CN 202930150 U CN202930150 U CN 202930150U
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- magnetic patch
- thread
- coil
- pulse transformer
- secondary coil
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Abstract
The utility model discloses a pulse transformer, which comprises a first magnetic block, a second magnetic block, a multilayer primary coil and a multilayer secondary coil, wherein the first magnetic block is disc-shaped, and is provided with a sidewall extending perpendicular to a disc-shaped plane of the first magnetic block from the edge of the first magnetic block; the second magnetic block is disc-shaped, is provided with a convex cylinder raised from the center of circle of the second magnetic block, and is suitable for closely covering the first magnetic block; the primary and secondary coils are sleeved on the convex cylinder of the second magnetic block; each layer of the primary and secondary coils is a spiral coil with an inner-circle thread end and an outer-circle thread end; and every two adjacent layers of the primary or secondary coil are laminated in a way that winding directions of the two layers are opposite, and are connected in series in a way that the inner-circle thread ends of the multilayer primary or secondary coil are connected in series with inner-circle joints and the outer-circle thread ends are connected with the outer-circle thread ends in series. The pulse transformer has the advantages of easiness for machining and less leakage flux.
Description
Technical field
The utility model relates to field transformer, relates in particular to a kind of pulse transformer of novel structure.
Background technology
Pulse transformer is a kind of broadband transformer.Pulse transformer is because consider that mainly waveform transmits problem.Even be equally wide band transformer, but as long as waveform can meet design requirement, magnetic core also can be operated in nonlinear area.Therefore, its profile can be done little more much with transformer than communication.Also have, except passing through highpowerpulse, the loss of transformer is generally also little.Therefore, the size of the magnetic core of getting depends on when pulse is passed through, whether magnetic flux is saturated, depends on perhaps whether the temperature rise that iron loss causes surpasses permissible value.
The upper magnetic patch structure of traditional transformer is " E " type, " C " type or " O " type structure substantially.What adopt between magnetic patch and coil on these is the structure of " circuit encirclement magnetic circuit ", and the part magnetic field of coil both sides can not be fully utilized, so magnetic flux leakage is large, can cause also that transformer efficiency is low, volume large, the high in cost of production problem.
In addition, generally adopt the form of " head and the tail intersect " between the primary coil of the pulse transformer of prior art and secondary coil, namely outer ring the end of a thread of inner ring the end of a thread of primary coil and secondary coil joins.The problem that connects like this is: as shown in Figure 6, inner ring the end of a thread of coil 601 must be drawn across whole coil, in order to be connected with the outer ring joint of another coil.
The utility model content
for the above-mentioned deficiency of prior art, the utility model proposes a kind of pulse transformer of structure innovation, this pulse transformer comprises: the first magnetic patch, in the form of annular discs and have from its edge-perpendicular in its extended sidewall in discoid plane, the second magnetic patch, in the form of annular discs and have from the outstanding convex cylindrical of its circle centre position, wherein said the second magnetic patch is suitable for closely being covered on described the first magnetic patch, and multilayer primary coil and multilayer secondary coil, be sheathed on the convex cylindrical of described the second magnetic patch and the every one deck in described primary coil and described secondary coil is all the helical winding with inner ring the end of a thread and outer ring the end of a thread, wherein, adjacent two layers in described multilayer primary coil stacks mutually in the opposite mode of direction of winding each other, and make described multilayer primary coil with inner ring the end of a thread serial connection inner ring joint, the mode of the end of a thread serial connection outer ring, outer ring the end of a thread is one another in series, wherein, adjacent two layers in described multilayer secondary coil stacks mutually in the opposite mode of direction of winding each other, and make described multilayer secondary coil with inner ring the end of a thread serial connection inner ring joint, the mode of the end of a thread serial connection outer ring, outer ring the end of a thread is one another in series.
Preferably, in above-mentioned pulse transformer, have centrosymmetric two openings in the sidewall of described the first magnetic patch.
Preferably, in above-mentioned pulse transformer, described helical winding is the snail formula coil of individual layer wiring.
Preferably, in above-mentioned pulse transformer, the thickness of described helical winding is less than 0.05mm.
Preferably, in above-mentioned pulse transformer, be provided with heat insulating lamella between the adjacent elementary and/or secondary coil in the cavity of described the first magnetic patch and described the second magnetic patch formation.
Pulse transformer of the present utility model has advantages of easy processing, few leakage field.In addition, the structure of the snail formula coil of individual layer wiring of the present utility model is better at circle voltage identical situation distributed capacitance and coupling, and can reduce leakage field and improve conversion efficiency.
In addition, primary coil of the present utility model and secondary coil are coated on the magnet inside of the first magnetic patch and the second magnetic patch formation basically, consist of in " magnetic circuit encirclement circuit ", the problem of leakage field basically can not occur, thereby magnetic field is utilized fully.
Should be appreciated that the above generality of the utility model is described and the following detailed description is all exemplary and explanat, and be intended to provide further explanation for as claimed in claim the utility model.
Description of drawings
Comprise that accompanying drawing is for providing, the utility model further to be understood, they are included and consist of the application's a part, and accompanying drawing shows embodiment of the present utility model, and play the effect of explaining the utility model principle together with this specification.In accompanying drawing:
Fig. 1 schematically shows the cutaway view of pulse transformer of the present utility model;
Fig. 2 shows the structure of the first magnetic patch of the present utility model.
Fig. 3 shows the structure of the second magnetic patch of the present utility model.
Fig. 4 shows the fit system of the first magnetic patch of the present utility model and the second magnetic patch.
Fig. 5 shows the serial connection mode of primary coil of the present utility model and secondary coil.
Fig. 6 shows coil connected mode of the prior art.
Embodiment
Now embodiment of the present utility model will be described with reference to the drawings in detail.Now will be in detail with reference to preferred embodiment of the present utility model, its example is shown in the drawings.In the case of any possible, will represent with identical mark same or analogous part in institute's drawings attached.In addition, although the term that uses in the utility model is to select from public term, but in the utility model specification, some mentioned terms may be that the applicant selects by his or her judgement, and its detailed meanings illustrates in the relevant portion of the description of this paper.In addition, require not only to pass through the actual terms used, but also will understand the utility model by the meaning that each term contains.
With reference to figure 1～Fig. 4, these accompanying drawings at length show the structure of pulse transformer 100 of the present utility model and associated components.As shown in the figure, pulse transformer 100 of the present utility model mainly comprises: the first magnetic patch 101, the second magnetic patch 102, multilayer primary coil 103 and multilayer secondary coil 104.
In the form of annular discs and have from its edge-perpendicular in the extended sidewall 201 in its discoid plane with reference to figure 2, the first magnetic patch 101.Preferably, in above-mentioned pulse transformer 100, have centrosymmetric two openings 202 in the sidewall 201 of the first magnetic patch 101, in order to conveniently to draw coil.In addition, as shown in Figure 3, the second magnetic patch 102 is in the form of annular discs and have from the outstanding convex cylindrical 301 of its circle centre position.As shown in Figure 4, the second magnetic patch 102 is suitable for closely being covered on the first magnetic patch 101.In other words, the disk area of the first magnetic patch 101 and the second magnetic patch 102 is basic identical, and the height of convex cylindrical 301 and sidewall 201 is also basic identical, therefore when being covered on the second magnetic patch 102 on the first magnetic patch 101 by mode shown in Figure 4, just can obtain a close-fitting circular cavity, in order to hold coil.
In the utility model, multilayer primary coil 103 and multilayer secondary coil 104 are the helical winding with inner ring the end of a thread and outer ring the end of a thread.Preferably, these helical windings are the snail formula coil of individual layer wiring, as shown in Figure 5.More preferably, in above-mentioned pulse transformer 100, the thickness of described helical winding is preferably less than 0.05mm.As shown in the figure, this multilayer primary coil 103 and this multilayer secondary coil 104 are sheathed on the convex cylindrical 301 of the second magnetic patch 102.
In addition, get back to Fig. 1, be provided with heat insulating lamella 105 between the adjacent elementary and/or secondary coil in the cavity of the first magnetic patch 101 and the second magnetic patch 102 formation.Certainly, be understandable that, this heat insulating lamella 105 is not to be the necessary condition that consists of the technical solution of the utility model.Arranging of this heat insulating lamella 105 can be selected according to the needs of practical application by the technical staff.
Forward Fig. 5 to, the figure shows the connected mode of primary coil of the present utility model and secondary coil, wherein primary coil 103 or secondary coil 104 all have inner ring the end of a thread 501 and outer ring the end of a thread 502.Particularly, according to the utility model, in the embodiment shown in fig. 5, the adjacent two layers of primary coil 103 stacks mutually in the opposite mode of direction of winding each other, and above-mentioned multilayer primary coil 103 is one another in series in the mode that inner ring the end of a thread serial connection inner ring joint, outer ring the end of a thread are connected in series outer ring the end of a thread.Same, the adjacent two layers of secondary coil 104 is also to stack mutually in each other the opposite mode of direction of winding, and above-mentioned multilayer secondary coil 104 is one another in series in the mode of inner ring the end of a thread serial connection inner ring joint, outer ring the end of a thread serial connection outer ring the end of a thread.
In other words, adjacent primary coil 103 in the utility model or secondary coil 104 all (for example stack in the opposite mode of direction of winding, a coiling along clockwise direction, and another coiling in the counterclockwise direction), make the end of a thread " prime minister's friendship " and " tail tail intersect ", in the mode of " head and the tail intersect " of prior art, inner ring the end of a thread 501 must be connected in series cause technical unfavorable by the whole coil of wire spans with outer ring the end of a thread 502 thereby removed from.
In sum, pulse transformer of the present utility model has advantages of easy processing, few leakage field.In addition, the structure of the snail formula coil of individual layer wiring of the present utility model is better at circle voltage identical situation distributed capacitance and coupling, and can reduce leakage field and improve conversion efficiency.
In addition, primary coil of the present utility model and secondary coil are coated on the magnet inside of the first magnetic patch and the second magnetic patch formation basically, consist of in " magnetic circuit encirclement circuit ", the problem of leakage field basically can not occur, thereby magnetic field is utilized fully.
Those skilled in the art can be obvious, can carry out various modifications and variations and not depart from spirit and scope of the present utility model above-mentioned exemplary embodiment of the present utility model.Therefore, be intended to make the utility model to cover to drop in appended claims and equivalence techniques scheme scope thereof to modification of the present utility model and modification.
Claims (5)
1. pulse transformer comprises:
The first magnetic patch, in the form of annular discs and have from its edge-perpendicular in its extended sidewall in discoid plane;
The second magnetic patch, in the form of annular discs and have from the outstanding convex cylindrical of its circle centre position, wherein said the second magnetic patch is suitable for closely being covered on described the first magnetic patch; And
Multilayer primary coil and multilayer secondary coil are sheathed on the convex cylindrical of described the second magnetic patch and the every one deck in described primary coil and described secondary coil is all the helical winding with inner ring the end of a thread and outer ring the end of a thread,
Wherein, the adjacent two layers in described multilayer primary coil stacks mutually in the opposite mode of direction of winding each other, and described multilayer primary coil is one another in series in the mode that inner ring the end of a thread serial connection inner ring joint, outer ring the end of a thread are connected in series outer ring the end of a thread,
Wherein, the adjacent two layers in described multilayer secondary coil stacks mutually in the opposite mode of direction of winding each other, and described multilayer secondary coil is one another in series in the mode that inner ring the end of a thread serial connection inner ring joint, outer ring the end of a thread are connected in series outer ring the end of a thread.
2. pulse transformer as claimed in claim 1, is characterized in that, has centrosymmetric two openings in the sidewall of described the first magnetic patch.
3. pulse transformer as claimed in claim 1, is characterized in that, described helical winding is the snail formula coil of individual layer wiring.
4. pulse transformer as claimed in claim 3, is characterized in that, the thickness of described helical winding is less than 0.05mm.
5. pulse transformer as claimed in claim 1, is characterized in that, is provided with heat insulating lamella between the adjacent elementary and/or secondary coil in the cavity of described the first magnetic patch and described the second magnetic patch formation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220633293 CN202930150U (en) | 2012-11-27 | 2012-11-27 | Pulse transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220633293 CN202930150U (en) | 2012-11-27 | 2012-11-27 | Pulse transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202930150U true CN202930150U (en) | 2013-05-08 |
Family
ID=48220086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220633293 Withdrawn - After Issue CN202930150U (en) | 2012-11-27 | 2012-11-27 | Pulse transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202930150U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102982969A (en) * | 2012-11-27 | 2013-03-20 | 宁波澳普网络通信设备有限公司 | Pulse transformer |
| CN107464674A (en) * | 2017-09-29 | 2017-12-12 | 中国工程物理研究院电子工程研究所 | A kind of electric-force gradient gradual change transformer and flexible circuit potential device |
-
2012
- 2012-11-27 CN CN 201220633293 patent/CN202930150U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102982969A (en) * | 2012-11-27 | 2013-03-20 | 宁波澳普网络通信设备有限公司 | Pulse transformer |
| CN102982969B (en) * | 2012-11-27 | 2015-09-16 | 宁波澳普网络通信设备有限公司 | Pulse transformer |
| CN107464674A (en) * | 2017-09-29 | 2017-12-12 | 中国工程物理研究院电子工程研究所 | A kind of electric-force gradient gradual change transformer and flexible circuit potential device |
| CN107464674B (en) * | 2017-09-29 | 2019-04-05 | 中国工程物理研究院电子工程研究所 | A kind of electric-force gradient gradual change transformer and flexible circuit potential device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130508 Effective date of abandoning: 20150916 |
|
| RGAV | Abandon patent right to avoid regrant |