CN1637967A - Transformer device and magnetic core structural body for transformer and producing method thereof - Google Patents
Transformer device and magnetic core structural body for transformer and producing method thereof Download PDFInfo
- Publication number
- CN1637967A CN1637967A CN 200410061514 CN200410061514A CN1637967A CN 1637967 A CN1637967 A CN 1637967A CN 200410061514 CN200410061514 CN 200410061514 CN 200410061514 A CN200410061514 A CN 200410061514A CN 1637967 A CN1637967 A CN 1637967A
- Authority
- CN
- China
- Prior art keywords
- magnetic core
- foot
- type ferrite
- transformer
- ferrite magnetic
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 19
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 103
- 238000004804 winding Methods 0.000 claims abstract description 8
- 210000002683 foot Anatomy 0.000 claims description 91
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000003032 molecular docking Methods 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 239000006148 magnetic separator Substances 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
Images
Landscapes
- Coils Or Transformers For Communication (AREA)
Abstract
This invention relates to a transformer device and magnetic core structural body for transformer, and producing method thereof. In this transformer, it forms with a gap G of a magnetic circuit inside a bobbin 20 wound with a plurality of windings. Combining first and second U-shaped ferrite cores 11 and 12, it forms the aforementioned magnetic circuit. Assuming the heights at the leg of one U-type ferrite core is Y1 and Y2, and the lengths at a part for coupling both legs is X1 and X2, a dimensional ratio is set such that Y1 > 1.5(X1), (however, Y1 > Y2, X1=X2), it forms the aforementioned gap G between one-side opposing legs.
Description
Technical field
The present invention relates to thin transformer device and magnetic core structural body for transformer and the manufacture method thereof of a kind of background light of LCD with middle employings such as converters.
Background technology
As the background light of LCD with the device for transformer that adopts in the converter etc., because it is slim requiring it, so known mode as shown in Figure 7, U type ferrite magnetic core 1 that the foot of both sides is short and 2 combinations of I type ferrite magnetic core, the coil rack 3 of the winding 4 of having reeled is installed on I type ferrite magnetic core 2, thereby is formed magnetic loop.
As the background light of the LCD of having used U type ferrite magnetic core and I type ferrite magnetic core known example, there is the spy to open the 2003-100530 communique with the device for transformer that adopts in the converter etc.
But in the magnetic loop that as shown in Figure 7 U type ferrite magnetic core 1 and I type ferrite magnetic core 2 is combined, under the situation that the gap is set between the magnetic core, the position that has a gap will become the outside of coil rack and produce the problem of leakage field.
And as shown in Figure 8, the mode that 5 combinations of common U type ferrite magnetic core is constituted magnetic loop also is known.
The example of the device for transformer of U shaped magnetic core combinations with one another such as ferrite for example is shown in the spy opens in the 2003-115415 communique, wherein,, put down in writing and adopted common U shaped magnetic core, the structure of the coil of overlapping coiling transformer in order to reduce leakage field.
Height dimension in the foot that makes common U type ferrite magnetic core both sides is Y, when making the length dimension of the connecting portion that connects two foots be X, as shown in Figure 8, though will size than can stably carrying out the processing of air gap under the situation for the common U type ferrite magnetic core combination of X 〉=Y, the background light that is not suitable for LCD is with the thin transformer device that adopts in the converter etc. (because X longer dimension and can not slimming).
Summary of the invention
The present invention proposes in view of the above problems, its purpose is to provide a kind of device for transformer and magnetic core structural body for transformer, even with U type ferrite magnetic core combination with one another, also can be corresponding with slimming by the length dimension of the height dimension of suitably setting its foot and the connecting portion that is connected two foots, and can make gap between the magnetic core be positioned at the inboard of coil rack, realize the stabilisation of electromagnetic property.
In addition, another object of the present invention is to provide a kind of manufacture method of magnetic core structural body for transformer, can carry out the stable high-precision gap processing of U type ferrite magnetic core, and can prevent the warpage of the foot of U type ferrite magnetic core, make correct shape.
In order to arrive above-mentioned purpose, the present invention is the device for transformer that a kind of inboard of the coil rack at a plurality of windings of having reeled is provided with the gap of magnetic loop, it is characterized in that, at the foot's height dimension that makes U type ferrite magnetic core is Y, when making the length dimension of the connecting portion that connects two foots be X, with dimensional ratios is that two U type ferrite magnetic cores combination of Y＞X forms above-mentioned magnetic loop, and above-mentioned gap is formed between the subtend foot of one of them.
And, the present invention is the device for transformer that a kind of inboard of the coil rack at a plurality of windings of having reeled is provided with the gap of magnetic loop, it is characterized in that, with the 1st and 2U type ferrite magnetic core combination and form above-mentioned magnetic loop, make the above-mentioned the 1st and foot's height dimension of 2U type ferrite magnetic core be Y1 and Y2, when making the length dimension of connecting portion be X1 and X2, Y1＞1.5 (X1) (wherein, Y1＞Y2, X1=X2), above-mentioned gap is formed between the subtend foot of one of them.
In addition, the feature of magnetic core structural body for transformer of the present invention is, at the foot's height dimension that makes U type ferrite magnetic core is Y, when making the length dimension of the connecting portion that connects two foots be X, with dimensional ratios is two U type ferrite magnetic core combinations of Y＞X, forms the gap between one the subtend foot therein.
And, the feature of magnetic core structural body for transformer of the present invention is, with the 1st and 2U type ferrite magnetic core combine, at the foot's height dimension that makes 1U type ferrite magnetic core is Y1, and making the length dimension of connecting portion is X1, and the foot's height dimension that makes 2U type ferrite magnetic core is Y2, when making the length dimension of connecting portion be X2, Y1＞1.5 (X1) (wherein, Y1＞Y2, X1=X2) form the gap between one the subtend foot therein.
In addition, the manufacture method of magnetic core structural body for transformer of the present invention be with the 1st and 2U type ferrite magnetic core combine, make the 1st and foot's height dimension of 2U type ferrite magnetic core be Y1 and Y2, when making the length dimension of connecting portion be X1 and X2, Y1＞Y2, Y2＜X2 (wherein, the manufacture method of magnetic core structural body for transformer X1=X2), it is characterized in that, above-mentioned 2U type ferrite magnetic core be to be configured as U type shape and burn till after the foot of parts carry out grinding and implement the gap processing, above-mentioned 1U type ferrite magnetic core be by grinding remove be configured as square shape and burn till after the cap of parts make U type shape and form.
And the relation of above-mentioned Y1 and Y2 is preferably 1.5 (Y2)≤Y1≤4 (Y2).
According to the present invention, because by having changed the U type ferrite magnetic core combination of dimensional ratios, can realize the slimming of device for transformer, and can set the length of magnetic path longer, can reduce gap length (if the length of magnetic path is long, then magnetic resistance increase, the magnetic resistance of gap one side little also can), so can reduce leakage field, obtain the stable thin transformer device of electromagnetic property.
And, manufacture method according to magnetic core structural body for transformer of the present invention, make the 1st and foot's height dimension of 2U type ferrite magnetic core be Y1 and Y2, when making the length dimension of connecting portion be X1 and X2, make Y1＞Y2, Y2＜X2 (wherein, X1=X2), with these the 1st and 2U type ferrite magnetic core combination, by to foot's enforcement gap processing of short 2U type ferrite magnetic core of foot, can carry out stable processing, form high-precision gap.
And, by grinding remove be configured as square shape and burn till after the cap of parts, the 1U type ferrite magnetic core that foot is long is made U type shape, has prevented the warpage of foot, obtains correct U type shape.
Therefore, can realize the gap precision height, be applicable to the magnetic core structural body in the high thin transformer device of overall dimension precision.
Description of drawings
Fig. 1 is the vertical view of the partly cut-away of the execution mode of expression device for transformer of the present invention and magnetic core structural body for transformer.
Fig. 2 is the vertical view of above-mentioned magnetic core structural body for transformer.
Fig. 3 is the vertical view of other execution modes of expression magnetic core structural body for transformer of the present invention.
The vertical view of the magnetic core structural body that Fig. 4 obtains by manufacture method of the present invention for expression.
Fig. 5 represents that foot is than the key diagram of the gap processing method of short U type ferrite magnetic core in the present embodiment.
Fig. 6 represents that foot is than the key diagram of the manufacture method of long U type ferrite magnetic core in the present embodiment.
Fig. 7 is the accompanying drawing of the existing device for transformer of expression.
Fig. 8 is the vertical view that has been used to make up the magnetic core structural body for transformer of existing common U type ferrite magnetic core.
Fig. 9 is the key diagram of expression foot than the existing processing method of long U type ferrite magnetic core.
Embodiment
Below, be illustrated as implementing preferred implementation of the present invention with reference to the execution mode of accompanying drawing device for transformer and magnetic core structural body for transformer.
Fig. 1 is embodiments of the present invention, and indication transformer device, Fig. 2 represent to be used for magnetic core structural body wherein.In these figure, by 1U type ferrite magnetic core 11 and 12 combinations of 2U ferrite core are constituted magnetic core structural body 10, the 1st and 2U type ferrite magnetic core 11,12 in one foot in fact do not produce each other and be docking together with gap, another foot produce each other clearance G (air gap or the separator gap of inserting non magnetic separator) with 200mm with interior slight gap relatively to.In addition, the gap is set in the device for transformer more, when the length in gap has surpassed 2mm, then increases but undesirable because of leakage field though adopt in converter at the background light of LCD.
Reel on coil racks such as ambroin 20 a plurality of windings, i.e. the 1st and the 2nd winding 31,32 insert in the inboard of coil rack 20 and to dispose the above-mentioned the 1st and the foot of formation clearance G one side of 2U type ferrite magnetic core 11,12.Owing to have clearance G in the inboard of coil rack 20, so can reduce leakage field.
Adopt Fig. 2 that magnetic core structural body 10 is illustrated.This magnetic core structural body 10 is with the 1st and 2U type ferrite magnetic core 11,12 combination and constituting, at the foot's height dimension that makes 1U type ferrite magnetic core 11 is Y1, the length dimension that makes connecting portion is X1, the foot's height dimension that makes 2U type ferrite magnetic core 12 is Y2, and the length dimension that makes connecting portion will become following formula during for X2.
Y1＞1.5 (X1) (wherein, Y1＞Y2, X1=X2)
When Y1 be X1 below 1.5 times the time owing to increase that the effect of the length of magnetic path of foot's direction weakens but undesirable.
Since the above-mentioned the 1st with 1U type ferrite magnetic core 11,12 in one foot be with slight gap relative to, thereby form clearance G.
In addition, among Fig. 1, the Φ in the magnetic core structural body 10 represents the flow direction of magnetic flux.
According to this execution mode, can obtain following effect.
(1) compares with common U type ferrite magnetic core, by having changed the U type ferrite magnetic core 11 of dimensional ratios, 12 make up and formation magnetic core structural body 10, promptly owing to make the 1st and 2U type ferrite magnetic core 11, foot's height dimension of 12 is Y1 and Y2, set Y1＞1.5 (X1) for (wherein when making the length dimension of connecting portion be X1 and X2, Y1＞Y2, X1=X2), so can shorten the length dimension X1 and the X2 of the connecting portion of each U type ferrite magnetic core, realize the slimming of device for transformer profile, and foot's height dimension sum of two U type ferrite magnetic cores extends fully and has guaranteed the necessary length of magnetic path.
(2) even also can set the length of magnetic path of magnetic core structural body 10 longer the slimming of device for transformer profile, the length of clearance G can be reduced to 2mm with interior (if the length of magnetic path of magnetic core one side lengthening, then the magnetic resistance of this part increases, the magnetic resistance of clearance G little also can), reduce the leakage field that clearance G causes, the inboard that is positioned at coil rack 20 by clearance G obtains the stable thin transformer device of electromagnetic property.
Fig. 3 represents can be used for other execution modes of the magnetic core structural body in the device for transformer of the present invention.In this case, be Y at the foot's height dimension that makes U type ferrite magnetic core, when the length dimension that connects the connecting portion of two foots is X, be that two U type ferrite magnetic cores, 15 combinations of Y＞X form magnetic loop with dimensional ratios.In fact one foot in two U type ferrite magnetic cores 15 does not produce gap and is docking together, another foot produce each other clearance G (air gap or the separator gap of inserting non magnetic separator) with 200mm with interior slight gap relatively to.Situation with Fig. 1 is identical constituting under the situation of device for transformer, respectively the foot of formation clearance G one side of U type ferrite magnetic core 15 is inserted the inboard that is configured in coil rack and gets final product.
Below, be illustrated with reference to the manufacture method of accompanying drawing the magnetic core structural body that is used for device for transformer.
Fig. 4 represents the magnetic core structural body for transformer that execution mode obtains by the manufacture method of magnetic core structural body for transformer of the present invention, Fig. 5 represent to foot the foot of short U type ferrite magnetic core carry out the gap method for processing, Fig. 6 represents the manufacture method of long U type ferrite magnetic core of foot.Fig. 9 is the key diagram of expression foot than the existing processing method of long U type ferrite magnetic core.
In the size that makes U type ferrite magnetic core than for being that X＜Y is applicable under the situation of slim device for transformer as shown in Figure 3, as shown in Figure 9, in order to form the air gap U type ferrite magnetic core 1 is being fixed on the machine table 30, and when carrying out grinding with the foot 2 of 40 pairs of U type ferrite of revolving wheel magnetic core 1, wave the machined surface instability because of foot 2, be difficult to obtain gap precision.Particularly the difference of size X and Y is big more then remarkable more.
The magnetic core structural body for transformer that should make by present embodiment as shown in Figure 4, be that the short U type ferrite magnetic core 20 of 1U type ferrite magnetic core 10 and foot that foot is long combines, make the 1st and the height dimension of the foot 11,21 of 2U type ferrite magnetic core be Y1 and Y2, set Y1＞Y2, Y2＜X2 for (wherein when making the length dimension of connecting portion 12,22 be X1 and X2, X1=X2), particularly on the basis of the slimming that realizes device for transformer, preferably make the relation of above-mentioned Y1 and Y2 become 1.5 (Y2)≤Y1≤4 (Y2).If Y1 is less than 1.5 of Y2, then the size of Y1 and Y2 sum is not too big with respect to the size of X1, compare with the situation that has adopted common U type ferrite magnetic core, the miniaturization effect of device for transformer is little, makes Y1 be longer than 4 times of Y2 then because the processing difficulties of foot and be undesirable on making.
In the device for transformer that the background light of LCD adopts in converter and since will by the 1st and the magnetic core structural body that constitutes of 2U type ferrite magnetic core 10,20 on the gap is set, so must carry out gap processing.Because wave the machined surface instability because of foot in the long U type ferrite magnetic core of foot, gap precision worsens, thus this to foot the foot 21 of short 2U type ferrite magnetic core 20 implement gaps processing.That is, as shown in Figure 5, in order to form the gap 2U type ferrite magnetic core 20 is fixed on (fixed mechanism is magnetic chuck or mechanical fixed mechanism) on the machine table 30, carries out grinding with the foot 21 of 40 pairs of U type ferrite of revolving wheel magnetic core 20.Though this processing itself is same as the prior art,,, can carry out high-precision clearance grinding processing so foot can not wave because foot 21 is very short.
Because the long 1U type ferrite magnetic core 10 of foot is configured as the U font and burns till and forms, so produce warpage because of foot 11 is long, the interval of both sides' foot 11 is out of shape to open direction.Therefore, in the present embodiment, as shown in Figure 6, the square shape ferrite core 15 that Ferrite Material is configured as square shape and burns till is fixed on (fixed mechanism is magnetic chuck or mechanical fixed mechanism) on the machine table 30, cap 16 with 50 pairs of square shape ferrite cores 15 of revolving wheel carries out grinding, removes (be ground to the height of imaginary line P and remove cap 16), thereby makes the fully long U type ferrite magnetic cores 10 of foot 11.By ferrite core is configured as square shape and burn till after component processing become the U font, can make foot 11 long and prevent to produce warpage.
In the magnetic core structural body for transformer that above-mentioned 1U type ferrite magnetic core 10 and 2U type ferrite magnetic core 20 are combined, as shown in Figure 4, in fact do not produce with gap each other one foot and to be docking together, another foot produce each other G ground, air gap with 2mm with interior slight gap relatively to and constitute under the situation of device for transformer, the coil rack that has carried out coiling is installed shown in imaginary line Q around the foot 11,12 that is provided with air gap G one side.
According to this execution mode, can obtain following effect.
(1) make the 1st and the height dimension of the foot 11,21 of 1U type ferrite magnetic core 10,20 be Y1 and Y2, when making the length dimension of connecting portion 12,22 be X1 and X2, make Y1＞Y2, Y2＜X2 (wherein, X1=X2), by these the 1st and the combination of 2U type ferrite magnetic core 10,20 and constitute magnetic core structural body, by foot is processed in the foot 21 enforcement gaps of short 2U type ferrite magnetic core 20, promptly use existing method, owing to do not have waving of foot, so can carry out stable processing.Its result can form high-precision clearance G between the front end face of two magnetic cores 10,20.
(2) and, for the long 1U type ferrite magnetic core 10 of foot, by grinding will be configured as square shape and burn till after the cap 16 of ferrite core 15 remove and make U type shape, also can prevent warpage although foot 11 is fully long, obtain correct U type shape.
(3) therefore, can realize gap precision height, overall dimension precision high be applicable to magnetic core structural body in the thin transformer device.
(4) in addition, by being set for, the relation of above-mentioned Y1 and Y2 satisfies 1.5 (Y2)≤Y1≤4 (Y2), can make the foot that becomes the part that the coil rack carried out coiling is set fully long and make accurately, so can realize being applicable to the magnetic core structural body in the slim device for transformer.
Make under the situation of magnetic core structural body for transformer in short 2U type ferrite magnetic core 20 combinations of 1U type ferrite magnetic core 10 that foot is long and foot, make the 1st and the height dimension of the foot 11,21 of 2U type ferrite magnetic core be Y1 and Y2, when making the length dimension of connecting portion 12,22 be X1 and X2, making the Y dimensional ratios is Y1: Y2=1.6: 1 and Y2＜X2, short 2U type ferrite magnetic core 20 usefulness of foot are shaped Ferrite Material, burn till the type into U with existing identical manufacture method, have carried out gap processing as illustrated in fig. 5.
The long 1U type ferrite magnetic core 10 of foot be from Ferrite Material is configured as square shape and burn till after parts remove cap 16 latter made by grinding as shown in Figure 6.
Its result, the precision when having formed the gap of 1mm under the situation of Y1=Y2=21mm be ± 0.3mm, compares with it, makes Y1=26mm, Y2=16mm (wherein, in the time of X1=X2=17mm) be ± 0.05mm, improve significantly.In addition, fraction defective such as damaged, warpage of magnetic core has also improved 20%.
Though more than embodiments of the present invention are illustrated, the present invention is not limited to this, self-evident, those skilled in the art can carry out various distortion, change in the scope that claim is put down in writing.
Claims (6)
1. device for transformer is provided with the gap of magnetic loop in the inboard of the coil rack of a plurality of windings of having reeled, it is characterized in that,
At the foot's height dimension that makes U type ferrite magnetic core is Y, when making the length dimension of the connecting portion that connects two foots be X, with dimensional ratios is that two U type ferrite magnetic cores combination of Y＞X forms above-mentioned magnetic loop, and above-mentioned gap is formed between the subtend foot of one of them.
2. device for transformer is provided with the gap of magnetic loop in the inboard of the coil rack of a plurality of windings of having reeled, it is characterized in that,
With the 1st and 2U type ferrite magnetic core combination and form above-mentioned magnetic loop, make the above-mentioned the 1st and foot's height dimension of 2U type ferrite magnetic core be Y1 and Y2, when making the length dimension of connecting portion be X1 and X2, Y1＞1.5 (X1) (wherein, Y1＞Y2, X1=X2), above-mentioned gap is formed between the subtend foot of one of them.
3. magnetic core structural body for transformer, it is characterized in that, at the foot's height dimension that makes U type ferrite magnetic core is Y, when making the length dimension of the connecting portion that connects two foots be X, with dimensional ratios is two U type ferrite magnetic core combinations of Y＞X, forms the gap between one the subtend foot therein.
4. magnetic core structural body for transformer, it is characterized in that, with the 1st and 2U type ferrite magnetic core combine, at the foot's height dimension that makes 1U type ferrite magnetic core is Y1, and making the length dimension of connecting portion is X1, and the foot's height dimension that makes 2U type ferrite magnetic core is Y2, when making the length dimension of connecting portion be X2, Y1＞1.5 (X1) (wherein, Y1＞Y2, X1=X2) form the gap between one the subtend foot therein.
5. the manufacture method of a magnetic core structural body for transformer, be with the 1st and 2U type ferrite magnetic core combine, make the 1st and foot's height dimension of 2U type ferrite magnetic core be Y1 and Y2, when making the length dimension of connecting portion be X1 and X2, Y1＞Y2, Y2＜X2 are (wherein, the manufacture method of magnetic core structural body for transformer X1=X2) is characterized in that
Above-mentioned 2U type ferrite magnetic core be to be configured as U type shape and burn till after the foot of parts carry out grinding and implement the gap processing,
Above-mentioned 1U type ferrite magnetic core be by grinding remove be configured as square shape and burn till after the cap of parts make U type shape and form.
6. the manufacture method of magnetic core structural body for transformer as claimed in claim 1.It is characterized in that the pass of above-mentioned Y1 and Y2 is 1.5 (Y2)≤Y1≤4 (Y2).
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003428751A JP2005191165A (en) | 2003-12-25 | 2003-12-25 | Transformer and core structure for transformer |
| JP2003429108A JP2005191183A (en) | 2003-12-25 | 2003-12-25 | Method for manufacturing core structure for transformer |
| JP428751/2003 | 2003-12-25 | ||
| JP429108/2003 | 2003-12-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1637967A true CN1637967A (en) | 2005-07-13 |
Family
ID=34863409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410061514 Pending CN1637967A (en) | 2003-12-25 | 2004-12-27 | Transformer device and magnetic core structural body for transformer and producing method thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1637967A (en) |
| TW (1) | TWI254329B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101615505B (en) * | 2009-05-27 | 2012-03-07 | 北京中机联供非晶科技股份有限公司 | Method for forming U-shaped amorphous iron core of reactor |
| CN107633936A (en) * | 2017-08-30 | 2018-01-26 | 杭州富特科技股份有限公司 | LLC transformers and its implementation and core assembly |
-
2004
- 2004-12-07 TW TW93137695A patent/TWI254329B/en not_active IP Right Cessation
- 2004-12-27 CN CN 200410061514 patent/CN1637967A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101615505B (en) * | 2009-05-27 | 2012-03-07 | 北京中机联供非晶科技股份有限公司 | Method for forming U-shaped amorphous iron core of reactor |
| CN107633936A (en) * | 2017-08-30 | 2018-01-26 | 杭州富特科技股份有限公司 | LLC transformers and its implementation and core assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| TW200525561A (en) | 2005-08-01 |
| TWI254329B (en) | 2006-05-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1220223C (en) | Wirewound coil | |
| CN1236459C (en) | Lamellate power inductor and manufacturing method thereof | |
| US20080309445A1 (en) | Transformer | |
| US20070075604A1 (en) | High Slot Utilization Systems for Electric Machines | |
| US6661326B2 (en) | Wire-winding structure and method for a transformer | |
| US9177713B2 (en) | Winding structure, coil winding, coil part, and coil winding manufacturing method | |
| CN1881488A (en) | magnetic element | |
| CN1366313A (en) | Layered impedance device | |
| CN1885451A (en) | Coil component | |
| CN1637967A (en) | Transformer device and magnetic core structural body for transformer and producing method thereof | |
| CN103177850A (en) | Inductor | |
| CN1407598A (en) | Method and paste for combining cut surface of ferrimagnet core for fluorescent light | |
| WO2021258352A1 (en) | Electrical component, circuit board, and switching power supply | |
| US11854735B2 (en) | Winding structure for inductor and method for manufacturing the same, winding inductor and method for manufacturing the same | |
| CN1199206C (en) | Transformer | |
| CN101170007B (en) | Methods of Adjusting Mutual Inductance Effects | |
| US11594362B2 (en) | Core component, method of manufacturing same, and inductor | |
| CN1815641A (en) | Magnetic element and method of manufacturing magnetic element | |
| CN1097832C (en) | Choke coil | |
| CN115732161A (en) | Special-shaped wire and vertical winding coil with high space utilization rate | |
| JPH06251946A (en) | Inductor component | |
| CN1492455A (en) | Panel mounting type choke coil | |
| CN100550225C (en) | High-tension transformer | |
| CN100347797C (en) | transformer | |
| US20250006417A1 (en) | Transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20050713 |
|
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |