CN1025096C - Flyback transformer - Google Patents
Flyback transformer Download PDFInfo
- Publication number
- CN1025096C CN1025096C CN 91111858 CN91111858A CN1025096C CN 1025096 C CN1025096 C CN 1025096C CN 91111858 CN91111858 CN 91111858 CN 91111858 A CN91111858 A CN 91111858A CN 1025096 C CN1025096 C CN 1025096C
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- China
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- coil
- kickback transformer
- rectifier cell
- elementary
- high pressure
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Abstract
The present invention relates to a novel flyback transformer with an annular structure. A plurality of annular spiral coils with magnetic cores are coaxially and vertically stacked together. A plurality of annular insulation spacers with rectifier elements provide insulation among the annular spiral coils, and the rectifier elements connect adjacent spiral coils. A secondary high-voltage coil is formed. An annular primary and secondary low-voltage coils are arranged outside the secondary high-voltage coil. The flyback transformer of the present invention has the advantages of compact structure and small volume. Compared with the prior art, the leakage inductance of the present invention is reduced to no more than 1% from 5%, the high-order tune of the present invention is increased to more than 15 times from 7 times, and the ringing ratio of the present invention is reduced to no more than 5% from more than 10%.
Description
The present invention relates to a kind of hf and hv pulse transformer, more particularly, relate to a kind of television set that is used for, in the screen image display devices such as monitor and produce the kickback transformer of high direct voltage with the flyback pulse of line scanning.
The kickback transformer structure that traditional television set adopts is seen shown in Figure 1.Usually adopt a U type magnetic core 1, elementary (not shown) of coiling and secondary coil 2 on a garden column type arm of U type magnetic core 1, high-pressure side is drawn by high-voltage line 3, and other end points of coil is drawn by the electrode pin on the base 54.Traditional kickback transformer magnetic circuit is long, and structure is not compact, because this structure is limit, makes that traditional kickback transformer leakage inductance is bigger, thereby some important parameters of kickback transformer can't further be improved.
The object of the present invention is to provide a kind of new structure to have leakage inductance little, the high performance kickback transformer of compact conformation.
Kickback transformer of the present invention is a kind of ring type structure, adopt that the toroidal helical coil of a plurality of band magnetic cores is coaxial vertically to be stacked together, each helical coil insulate with the ring-type insulation spacer that has rectifier cell such as rectifier diode, link together with the rectifier cell in the insulation spacer between two helical coils, at last, form the secondary high pressure coil that has rectifier cell, in secondary high pressure coil outside, wind again with loop coil, as elementary and secondary low-voltage coil.
In order to prevent that high voltage arc or creepage phenomenon from appearring in the toroidal helical coil exit in the kickback transformer of the present invention, reduce its outlet voltage to improve reliability, the coiling of described toroidal helical coil sectional, when dividing two sections coilings, promptly on toroidal core around to the ring half be first coil.Be second coil by in contrast second half coil of precession direction coiling again.The not end of first coil directly or be connected to the head end of second coil by a rectifier cell then, level was isolated before and after the advantage that connects with rectifier cell between the coil of segmentation was to realize, help improving population parameter, accordingly, if necessary, the circular spiral coil can divide three sections, four sections or more multistage coiling.
Kickback transformer of the present invention is compared with traditional kickback transformer, and main performance index has bigger improvement, is the main performance index experimental data of kickback transformer of the present invention and the comparative result of traditional kickback transformer below.
Prior art the present invention
Leakage inductance 5.6% 0.23%
Pulse frequency response (KHZ) 33 100
Ring is than 13% 4%
The line frequency scope of can working 15-28 15-100
（KHZ）
In addition, kickback transformer compact conformation of the present invention, the duty volume is little, compared with prior art, because the length of magnetic path shortens, and cross-sectional area increases greatly, so magnetic resistance reduces greatly, requiring under the identical magnetic flux density situation like this, coil turn can significantly reduce, toroidal core wherein is if adopt high permeability material such as amorphous alloy or micro crystal material, and then volume also can significantly reduce.
Fig. 1 is the typical kickback transformer general structure schematic diagram of prior art.
Fig. 2 is the general structure schematic diagram of kickback transformer of the present invention.
Fig. 3 is a circular spiral coil in the kickback transformer of the present invention.
Fig. 4 divides the situation of two sections coilings for the circular spiral coil in the kickback transformer of the present invention.
Fig. 5 divides the situation of three sections coilings for the circular spiral coil in the kickback transformer of the present invention.
Fig. 6 A-6C is three kinds of different structures that have the annular insulating mat sheet of rectifier cell.
Fig. 7 A-7C is the not segmentation of circular spiral coil in the kickback transformer of the present invention, divides two sections and divide three sections methods of attachment between the situation lower coil.
Fig. 8 is the winding method of the primary coil of kickback transformer of the present invention.
Fig. 9 is the another kind of embodiment of the primary coil of kickback transformer of the present invention.
Figure 10 is the partial enlarged drawing of Fig. 9, the structure of the primary coil in the displayed map 9 and method of attachment.
Describe the present invention now in conjunction with the accompanying drawings in detail.
Referring to accompanying drawing, Fig. 2 is the overall structure figure of kickback transformer of the present invention, and wherein circular spiral coil 2 concentrics that have ring-shaped magnetic core 1 by a plurality of (only showing 3 among the figure) vertically are superimposed together.Between the top of helical coil and each helical coil by ring-type insulation spacer 3 insulation that have rectifier cell 4, and as rectifier diode two adjacent helical coils are coupled together by rectifier cell 4 wherein, the negative pole of the diode in the uppermost insulation spacer 3 is drawn as high-pressure side by high-voltage line 9, the exit of nethermost helical coil is drawn by the contact conductor on the base 87, in the secondary coil outside of forming by helical coil an insulation crust 5 is arranged, in practice, the also insulating barrier of casting, elementary and the low-voltage coil 6 of coiling on insulation crust 5, coil lead is by on the shell 10, and the lead-in wire electrode 7 on the base 8 draws.In the present invention, the number of circular spiral coil can be chosen as required, in the middle of the reality, is good with 3-5.
Fig. 3, Fig. 4, Fig. 5 have shown three kinds of different structures of the circular spiral coil in the kickback transformer of the present invention respectively.A1 is the coil head end among Fig. 3, and a2 is a coil end, for reduce leakage inductance can adopt individual layer close around; Fig. 4 has shown that the circular spiral coil in the kickback transformer of the present invention divides the structure of two sections coilings, promptly on ring-shaped magnetic core counterclockwise half of (left-handed advancing) coiling ring be first coil, the first and last end is respectively a1, a2, be second coil by opposite precession direction around intact half remaining ring again, the first and last end is respectively b1, b2, can directly link to each other between a2 and the b2 with lead or diode, when being U as if whole winding voltage like this, between the then adjacent end points, voltage has only U/2 between a1b2 and the a2b1, prevented the generation of high voltage arc or creepage phenomenon, increased reliability, Fig. 5 has shown that helical coil divides the situation of three sections coilings, i.e. counterclockwise left-handed 1/3 first coil on toroidal core around ring, the first and last end is respectively a1, a2 is then with being second coil around 1/3 equally again, the first and last end is respectively b1, the last dextrorotation again of b2 is tertiary coil around 1/3 of intact remainder, the first and last end is respectively c1, c2, then, with a2c2, directly link together between the c1b1 with lead or diode, like this if whole helical coil voltage is the then adjacent end points a1c2 of U, a2b1, voltage between the b2c1 has only U/3, by this rule, as required, the helical coil in the kickback transformer of the present invention can divide more section coiling, but hop count is too many, because of the line complexity, be unfavorable for realization of the present invention, generally to be no more than three sections for good.
Fig. 6 A, Fig. 6 B, Fig. 6 C has shown that respectively the annular insulating mat sheet 3 in the kickback transformer of the present invention corresponds respectively to three kinds of situations by the helical coil of three kinds of distinct methods coilings, diode 4 can be to be solidificated in the inside when producing insulation spacer 3, the extraction electrode of diode respectively as Fig. 6 A ,-6C shown in, preferably corresponding with the terminals of helical coil among Fig. 3-Fig. 5.
Fig. 7 A, Fig. 7 B, Fig. 7 C, shown that respectively circular spiral coil in the kickback transformer of the present invention is under three kinds of different coiling situations, connected mode between helical coil and the insulation spacer, wherein among Fig. 7 A, the head end a1 of nethermost first helical coil draws, be earth terminal, terminal a2 is connected to the anodal a ' 2 of the diode of the first top pad, the negative pole a ' 1 of diode is connected to the head end a1 of the second top helical coil, the terminal a2 of this coil is connected to the positive pole of the diode in the top pad, connect down by mode like this, the negative pole of the diode in the last insulation spacer is drawn as high-voltage output end, in Fig. 7 B, the head end a1 of first coiler part of nethermost first helical coil is an earth terminal, the terminal a2 of first coiler part is connected to the anodal a ' 2 of first diode in the first top insulation spacer, the negative pole a ' 1 that the head end b1 of terminal b 2 second coiler parts that its negative pole b ' 2 is connected to second coiler part of described first helical coil is connected to anodal b ' 1 described second diode of second diode in described first insulation spacer is connected to the head end of first coiler part of the second top helical coil, connecing this rule connects down, until uppermost pad, the negative pole a ' 1 of second diode wherein is a high-pressure side, in Fig. 7 C, the sound end a1 of first coiler part of nethermost first helical coil is an earth terminal, the terminal a2 of this first coiler part is connected to the anodal a ' 2 of first diode in the top pad, the negative pole c ' 2 of this diode is connected to the terminal c2 of the tertiary coil part in described first helical coil, the head end c1 of this tertiary coil part is connected to the anodal c ' 1 of second diode in described first pad, the negative pole b ' 1 of described diode is connected to the second coiler part head end b1 of described first helical coil, the negative pole a ' 1 that the terminal b2 of described second coiler part is connected to the anodal b ' 2 described diodes of the 3rd diode in described first pad is connected to the head end a1 of first coiler part of the second top helical coil, connect down by this rule, until the insulation spacer in the top, the negative pole of the 3rd diode wherein leads to high-pressure side.
Fig. 8 has shown the structure of elementary and low-voltage coil 6 in the kickback transformer of the present invention, coil 6 requires evenly coiling on insulation crust 5, this is most important to performance of the present invention, promptly require the required number of turn of each coil (comprising primary coil and low-voltage coil) is distributed in the garden on week uniformly and equidistantly, terminals cause on the pin electrode 7 of base 8 (Fig. 2).
Elementary, secondary low-voltage coil can also be the conductive layer that adopts steaming method or electro-plating method to form, and shown in Fig. 9,10, forms one deck conductive layer in the outside of the insulation crust 5 of secondary coil outside, and inside and outside the lower end exit m
1, n
1, form a layer insulating then, form one deck conductive layer outside again, m is drawn in the lower end
2n
2, m
3n
3, until last one deck, end line is m
nn
n, then with m
2n
1m
3n
2, until m
nn
N-1Connect respectively, form the coil integral body of a n circle, m
1And n
nElectrode 7(Fig. 2 from the base 8) draw, such loop construction leakage inductance is little, high conformity.More favourable performance of the present invention improves.
Should be appreciated that those skilled in the art, can make various substituting and change, but not break away from the spirit and scope of the present invention.
Claims (18)
1, a kind of kickback transformer is characterized in that comprising,
The circular spiral coil that has ring-shaped magnetic core respectively that a plurality of concentrics are superimposed together;
With the corresponding a plurality of annular insulating mat sheets that have rectifier cell of described helical coil, be used between the described helical coil insulation is provided, and adjacent helical coil is coupled together by wherein contained rectifier cell, constitute the secondary high pressure coil; And
At least one group of elementary and secondary low-voltage coil in described secondary high pressure coil outside can have dielectric to be separated by between described elementary and secondary low-voltage coil and the described secondary high pressure coil.
2, kickback transformer as claimed in claim 1 is characterized in that described circular spiral coil is preferably 3-5.
3, kickback transformer as claimed in claim 1 is characterized in that described magnetic core is amorphous alloy or micro crystal material.
4, kickback transformer as claimed in claim 1 it is characterized in that described rectifier cell is cured among the described insulation spacer, and the electrode leads to client of described rectifier cell is corresponding with the terminals of described helical coil.
5, kickback transformer as claimed in claim 1 is characterized in that described rectifier cell is a rectifier diode.
6, kickback transformer as claimed in claim 1 is characterized in that, and is described elementary and the secondary low-voltage coil can be formed by the conductive layer that multilayer has dielectric to be separated by constitutes with closing coil.
7, a kind of kickback transformer is characterized in that comprising,
The circular spiral coil that has ring-shaped magnetic core respectively that a plurality of concentrics are superimposed together, described circular spiral coil comprises first coiler part and second coiler part, wherein the precession direction of second coiler part is opposite with first coiler part; The end of the end of described first coiler part and described second coiler part can directly or with rectifier cell couple together;
With the corresponding a plurality of annular insulating mat sheets that have rectifier cell of described helical coil, be used between the described helical coil insulation is provided, and adjacent helical coil is coupled together by rectifier cell wherein, constitute the secondary high pressure coil; And
At least one group of elementary and secondary low-voltage coil in described secondary high pressure coil outside can have dielectric to be separated by between described elementary and secondary low-voltage coil and the described secondary high pressure coil.
8, kickback transformer as claimed in claim 7 is characterized in that described circular spiral coil is preferably 3-5.
9, kickback transformer as claimed in claim 7 is characterized in that described magnetic core is amorphous alloy or micro crystal material.
10, kickback transformer as claimed in claim 7 it is characterized in that described rectifier cell is cured among the described insulation spacer, and the electrode leads to client of described rectifier cell is corresponding with the terminals of described helical coil.
11, kickback transformer as claimed in claim 7 is characterized in that described rectifier cell is a rectifier diode.
12, kickback transformer as claimed in claim 7 is characterized in that, and is described elementary and the secondary low-voltage coil can be formed by the conductive layer that multilayer has dielectric to be separated by constitutes with closing coil.
13, a kind of kickback transformer is characterized in that comprising,
The circular spiral coil that has ring-shaped magnetic core respectively that a plurality of concentrics are superimposed together, described circular spiral coil comprises, first coiler part, second coiler part and tertiary coil part, wherein the precession direction of tertiary coil part is opposite with the former two; And the end of the end of described first coiler part and tertiary coil part, the head end of the head end of described second coiler part and tertiary coil part directly or with rectifier cell couples together respectively;
With the corresponding a plurality of annular insulating mat sheets that have rectifier cell of described helical coil, be used between the described helical coil insulation is provided, and adjacent helical coil is coupled together by rectifier cell wherein, constitute the secondary high pressure coil; And
At least one group of elementary and secondary low-voltage coil in described secondary high pressure coil outside can have dielectric to be separated by between described elementary and secondary low-voltage coil and the described secondary high pressure coil.
14,, it is characterized in that described circular spiral coil is preferably 3-5 as the kickback transformer of claim 13.
15,, it is characterized in that described magnetic core is amorphous alloy or micro crystal material as the kickback transformer of claim 13.
16,, it is characterized in that described rectifier cell is cured among the described insulation spacer, and the electrode leads to client of described rectifier cell is corresponding with the terminals of described helical coil as the kickback transformer of claim 13.
17,, it is characterized in that described rectifier cell is a rectifier diode as the kickback transformer of claim 13.
18, as the kickback transformer of claim 13, it is characterized in that, described elementary and the secondary low-voltage coil can be formed by the conductive layer that multilayer has dielectric to be separated by constitutes with closing coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91111858 CN1025096C (en) | 1991-12-20 | 1991-12-20 | Flyback transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91111858 CN1025096C (en) | 1991-12-20 | 1991-12-20 | Flyback transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1073565A CN1073565A (en) | 1993-06-23 |
| CN1025096C true CN1025096C (en) | 1994-06-15 |
Family
ID=4910899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91111858 Expired - Fee Related CN1025096C (en) | 1991-12-20 | 1991-12-20 | Flyback transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1025096C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3558437B2 (en) * | 1995-12-28 | 2004-08-25 | 株式会社日立メディアエレクトロニクス | Flyback transformer |
| CN109003797A (en) * | 2018-07-26 | 2018-12-14 | 中国工程物理研究院流体物理研究所 | A kind of high voltage pulse transformer |
-
1991
- 1991-12-20 CN CN 91111858 patent/CN1025096C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1073565A (en) | 1993-06-23 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
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| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |