CN1747082A - Leakage transformer - Google Patents
Leakage transformer Download PDFInfo
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- CN1747082A CN1747082A CN 200510092155 CN200510092155A CN1747082A CN 1747082 A CN1747082 A CN 1747082A CN 200510092155 CN200510092155 CN 200510092155 CN 200510092155 A CN200510092155 A CN 200510092155A CN 1747082 A CN1747082 A CN 1747082A
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Abstract
The invention obtains a leakage transformer capable reducing the installation space in the housing. The leakage transformer comprises a first leakage transformer section having a primary winding 3 and a secondary wiring 4, a second leakage transformer section located by side with the first leakage transformer section and having a primary winding 6 and a secondary wiring 7, and an external core 8 forming both the magnetic path of the first leakage transformer section and the magnetic path of the second leakage transformer section.
Description
Technical field
The present invention relates to for example leakage transformer of phase inverter (inverter circuit) usefulness.
Background technology
Always, leakage transformer is used in for example step-up transformer of the phase inverter of the usefulness backlight of panel of LCD.
The framework of the liquid crystal indicator of interior dress panel of LCD, minicom etc. in order not influence the saving spatiality, often adopts the design of miniaturization, slimming.Therefore the elements such as transformer to using in the framework of these devices require its realization slimming and/or width to do narrowly.
As the leakage transformer of such narrow width, have and use I sections core for connecting the central core of primary and secondary winding, externally magnetic circuit uses the transformer No. the 3386972nd, reference example such as Japan Patent ((Fig. 1 etc.)) of E sections core.
Summary of the invention
For example under the situations such as phase inverter purposes of the usefulness backlight of above-mentioned panel of LCD, along with the maximization of panel of LCD, panel of LCD backlight needs to use a plurality of cold-cathode tubes.
For example as above-mentioned purposes, use under the situation of a plurality of cold-cathode tubes,, use a plurality of leakage transformers in order to drive a plurality of cold-cathode tubes.Because a leakage transformer adopts an element, the leakage transformer with cold-cathode tube number respective number is set in the framework.The space that therefore the leakage transformer element is set in the framework of built-in component display pannel device has also increased.
The object of the invention is to provide a kind of leakage transformer that the space is set that can reduce in the framework.
In order to realize above-mentioned problem, the present invention takes means as described below.
A kind of leakage transformer of the present invention, possess: the 1st leakage transformer unit with elementary winding and secondary winding, with the 1st leakage transformer unit and row arrangement, have the 2nd leakage transformer unit of elementary winding and secondary winding, and between the 1st leakage transformer unit and the 2nd leakage transformer unit, form the dual-purpose iron core of two magnetic circuits of the magnetic circuit of the magnetic circuit of the 1st leakage transformer unit and the 2nd leakage transformer unit.
Like this, the part of dual-purpose iron core, simultaneously a plurality of leakage transformers unit being gathered is one, therefore can reduce to be provided with the space that a plurality of leakage transformers need.
Again, leakage transformer of the present invention, be on the basis of above-mentioned leakage transformer, can also the dual-purpose iron core have a part at the elementary winding of the 1st leakage transformer unit and/or the 2nd leakage transformer unit, and the remainder of elementary winding and secondary winding between form the leakage flux conducting portion of the magnetic circuit that leakage flux uses.
Like this, utilize the part of elementary winding and the turn ratio of remainder, can adjust the amount of leakage flux simply.
Again, leakage transformer of the present invention, be on the basis of above-mentioned arbitrary leakage transformer, can also the dual-purpose iron core have a part at elementary winding on the 1st leakage transformer unit and/or the 2nd leakage transformer unit and secondary winding, and the remainder of secondary winding between form the leakage flux conducting portion of the magnetic circuit that leakage flux uses.
Like this, utilize the ratio of a part with the number of turn of remainder of secondary winding, can adjust the amount of leakage flux simply.
Again, a kind of leakage transformer of the present invention, possess: the 1st leakage transformer unit with central core and the elementary winding of on this central core, reeling and secondary winding, with the 1st leakage transformer unit and row arrangement, have the 2nd leakage transformer unit of central core and elementary winding of on this central core, reeling and secondary winding, and between the 1st leakage transformer unit and the 2nd leakage transformer unit, form the outer core of the outside magnetic circuit of the 1st leakage transformer unit and the 2nd leakage transformer unit.
Like this, outer core is used for the magnetic circuit of the 1st and the 2nd leakage transformer unit, therefore can reduce to be provided with the space that a plurality of leakage transformers need.
Again, leakage transformer of the present invention, be on the basis of above-mentioned leakage transformer, can also outer core have a part at the elementary winding on the 1st leakage transformer unit and/or the 2nd leakage transformer unit, and the remainder of elementary winding and secondary winding between form the leakage flux conducting portion of the magnetic circuit that leakage flux uses.
Like this, utilize the ratio of a part with the number of turn of remainder of elementary winding, can adjust the amount of leakage flux simply.
Again, leakage transformer of the present invention, be on the basis of above-mentioned arbitrary leakage transformer, can also outer core have a part at elementary winding on the 1st leakage transformer unit and/or the 2nd leakage transformer unit and secondary winding, and the remainder of secondary winding between form the leakage flux conducting portion of the magnetic circuit that leakage flux uses.
Like this, utilize the ratio of a part with the number of turn of remainder of secondary winding, can adjust the amount of leakage flux simply.
Again, a kind of leakage transformer of the present invention, possess: append the dual-purpose iron core that two of being parallel to this H sections core hold the shape of the extended leakage flux of board after with extension level with both hands at the central flat board of H sections core, in the face of front end of holding board level with both hands and leakage flux an I sections core with a front-end configuration of extension, in the face of holding another front end of board and leakage flux the 2nd I sections core level with both hands with another front-end configuration of extension, in an I sections core, at least at a side the 1st elementary winding that board and leakage flux are reeled between with extension of holding level with both hands, at an I sections core, at least reel between in the opposing party's hold level with both hands board and leakage flux with extension, with magnetic-coupled the 1st secondary winding of the 1st elementary winding, at the 2nd I sections core, at least at a side the 2nd elementary winding that board and leakage flux are reeled between with extension of holding level with both hands, and, reel between in the opposing party's hold level with both hands board and leakage flux at least with extension at the 2nd I sections core, with magnetic-coupled the 2nd secondary winding of the 2nd elementary winding.
Like this, constitute the 1st bar-shaped transformer by the 1st elementary winding, the 1st secondary winding and an I sections core, constitute the 2nd bar-shaped transformer by the 2nd elementary winding, the 2nd secondary winding and the 2nd I sections core, the dual-purpose iron core is used on the magnetic circuit of the 1st and the 2nd bar-shaped transformer simultaneously, therefore can reduce to be provided with the needed space of a plurality of leakage transformers.
Again, leakage transformer of the present invention, be on the basis of above-mentioned leakage transformer, all right the 1st elementary winding and/or the 2nd elementary winding, its part is wound in holding level with both hands between board and the leakage flux usefulness extension of a side, and remainder is wound in holding level with both hands between board and the leakage flux usefulness extension of the opposing party.
Like this, utilize the ratio of a part with the number of turn of remainder of elementary winding, can adjust the amount of leakage flux simply.
Again, leakage transformer of the present invention, be on the basis of above-mentioned arbitrary leakage transformer, all right the 1st secondary winding and/or the 2nd secondary winding, its part is wound in holding level with both hands between board and the leakage flux usefulness extension of a side, and remainder is wound in holding level with both hands between board and the leakage flux usefulness extension of the opposing party.
Like this, utilize the ratio of a part with the number of turn of remainder of secondary winding, can adjust the amount of leakage flux simply.
Again, leakage transformer of the present invention, possess: have the elementary winding of reeling and the 1st leakage transformer unit of the secondary winding of reeling in primary side iron core portion in primary side iron core portion, with the 1st leakage transformer unit and row arrangement, the 2nd leakage transformer unit with the elementary winding of reeling and the secondary winding of in primary side iron core portion, reeling in primary side iron core portion, and between the 1st leakage transformer unit and the 2nd leakage transformer unit, form the primary side iron core portion of the 1st leakage transformer unit and the magnetic circuit between the primary side iron core portion, and, the dual-purpose iron core of two magnetic circuits of the magnetic circuit between the primary side iron core portion of the 2nd leakage transformer unit and the primary side iron core portion.
Like this, dual-purpose iron core portion is used for the magnetic circuit of the 1st and the 2nd leakage transformer unit, therefore can reduce to be provided with the space that a plurality of leakage transformers need.
Again, a kind of leakage transformer of the present invention, possess: append the dual-purpose iron core that two of being parallel to this H sections core hold the shape of the extended leakage flux of board after with extension level with both hands at the central flat board of H sections core, in the face of front end of holding board level with both hands and leakage flux an I sections core with a front-end configuration of extension, in the face of holding another front end of board and leakage flux the 2nd I sections core level with both hands with another front-end configuration of extension, the board of holding level with both hands a side, be wound in the 1st elementary winding between an I sections core and the central flat board, the board of holding level with both hands the opposing party, be wound between an I sections core and the central flat board, with magnetic-coupled the 1st secondary winding of the 1st elementary winding, the board of holding level with both hands a side, be wound in the 2nd elementary winding between the 2nd I sections core and the central flat board, and at the opposing party's the board of holding level with both hands, be wound between the 2nd I sections core and the central flat board, with magnetic-coupled the 2nd secondary winding of the 2nd elementary winding.
Like this, part by the 1st elementary winding, the 1st secondary winding, an I sections core and dual-purpose iron core constitutes the 1st transformer, part by the 2nd elementary winding, the 2nd secondary winding, the 2nd I sections core and dual-purpose iron core constitutes the 2nd transformer, the dual-purpose iron core is used on the magnetic circuit of the 1st and the 2nd transformer, therefore can reduce to be provided with the needed space of a plurality of leakage transformers.
Adopt the present invention, can access the smaller leakage transformer in space that in framework, is provided with.
Description of drawings
Fig. 1 is the stereogram of structure of the leakage transformer of expression example 1.
Fig. 2 is the vertical view of structure of the leakage transformer of expression example 1.
Fig. 3 is the upward view of structure of the leakage transformer of expression example 1.
Fig. 4 represents the magnetics structure of the leakage transformer of example 1.
Fig. 5 represents the magnetics structure of the leakage transformer of example 2.
Fig. 6 represents the magnetics structure of the leakage transformer of example 3.
Fig. 7 is the vertical view of the leakage transformer of expression example 4.
Fig. 8 is the side view of the leakage transformer of expression example 4.
Fig. 9 represents the magnetics structure of the leakage transformer of example 4.
Figure 10 represents the magnetics structure of the leakage transformer of example 5.
Symbol description
2 central core (part of the 1st leakage transformer unit, an I sections core)
3 elementary windings (part of the 1st leakage transformer unit, the 1st elementary winding)
4 secondary winding (part of the 1st leakage transformer unit, the 1st secondary winding)
5 central core (part of the 2nd leakage transformer unit, the 2nd I sections core)
6 elementary windings (part of the 2nd leakage transformer unit, the 2nd elementary winding)
7 secondary winding (part of the 2nd leakage transformer unit, the 2nd secondary winding)
8 outer cores (dual-purpose iron core)
8a central flat board
8b, 8c hold board level with both hands
8d, 8e leakage flux extension (leakage flux conducting portion)
51 dual-purpose iron cores
51a central flat board
51b holds board level with both hands
51b1 primary side iron core portion (part of the 1st leakage transformer unit)
51b2 primary side iron core portion (part of the 2nd leakage transformer unit)
51c holds board level with both hands
51c1 primary side iron core portion (part of the 1st leakage transformer unit)
51c2 primary side iron core portion (part of the 2nd leakage transformer unit)
51d, 51e leakage flux extension
52 elementary windings (part of the 1st leakage transformer unit, the 1st elementary winding)
53 secondary winding (part of the 1st leakage transformer unit, the 1st secondary winding)
54 I sections cores (an I sections core)
55 elementary windings (part of the 2nd leakage transformer unit, the 2nd elementary winding)
56 secondary winding (part of the 2nd leakage transformer unit, the 2nd secondary winding)
57 I sections cores (the 2nd I sections core)
Concrete example
Below with reference to the accompanying drawings example of the present invention is described.
Example 1
Fig. 1, Fig. 2 and Fig. 3 are stereogram, vertical view and the upward views of structure of the leakage transformer of expression example 1.
The leakage transformer of example 1 has two leakage transformer unit Tr1, Tr2 in an element.
Among Fig. 1, support member 1 is to support the member of iron core 2,5,8 etc.Support member 1 is made of non-magnetic insulating material.The end face of support member 1 is provided with the terminal 1a that is used to twine elementary winding 3,6, is provided with the terminal 1b that twines secondary winding 4,7 usefulness with this end face opposing end faces.
Again, central core 2 is central core of the 1st leakage transformer unit Tr1, is I sections core, and central core 2 is made of magnetic materials such as ferrites.Elementary winding 3 is the windings that are wound in central core 2.Elementary winding 3 is wound in central core 2 and inserts the drum stand that passes.Secondary winding 4 is the windings that are wound in central core 2.Secondary winding 4 is wound in central core 2 and inserts the drum stand that passes.The 1st leakage transformer unit Tr1 works as step-up transformer, so the number of turn of the elementary winding 3 of the turn ratio of secondary winding 4 is many.Again, drive at cold-cathode tube under the situation of leakage transformer of usefulness, the voltage of induction is high pressure on secondary winding 4, so secondary winding 4 is divided into multistage and reels.
In this example 1, the 2nd leakage transformer unit Tr2 with central core 5, elementary winding 6 and secondary winding 7 adopts identical structure with the 1st leakage transformer unit Tr1 with central core 2, elementary winding 3 and secondary winding 4.
This outer core 8 forms appending two of being parallel to this H sections core on the central flat board 8a of H sections core holds leakage flux that board 8b, 8c the extend shape after with extension 8d, 8e level with both hands.In this example 1, it is the shape of the plane of symmetry that outer core 8 has with the median plane that is parallel to central flat board 8a.Again, the height of outer core 8 as shown in Figure 1, and is bigger than the height of central core 2,5.And for example shown in Figure 2, hold the front end of board 8b, 8c and leakage flux level with both hands with central core 2 configurations of the front end face of extension 8d, hold another front end of board 8b, 8c and leakage flux level with both hands with central core 5 configurations of the front end face of extension 8e the 2nd leakage transformer unit Tr2 to the 1st leakage transformer unit Tr1.
In this example 1, elementary winding 3 is disposed in holding level with both hands between board 8b and the leakage flux usefulness extension 8d on the central core 2, and secondary winding 4 is disposed in holding level with both hands between board 8c and the leakage flux usefulness extension 8d on the central core 2.Again, in this example 1, elementary winding 6 is disposed in holding level with both hands between board 8b and the leakage flux usefulness extension 8e on the central core 5, and secondary winding 7 is disposed in holding level with both hands between board 8c and the leakage flux usefulness extension 8e on the central core 5.
Utilize this core structure, utilize central core 2 and outer core 8 to form the magnetic circuit of the 1st leakage transformer unit Tr1, utilize central core 5 and outer core 8 to form the magnetic circuit of the 2nd leakage transformer unit Tr2 simultaneously.That is to say that this outer core 8 becomes the dual-purpose iron core of the magnetic circuit of the magnetic circuit that is used for the 1st leakage transformer unit Tr1 and the 2nd leakage transformer unit Tr2.
Magnetism characteristic to above-mentioned leakage transformer describes below.Fig. 4 is the figure of magnetics structure of the leakage transformer of expression example 1.Also have, each winding the 3,4,6, the 7th among Fig. 4 illustrates the schematic winding of usefulness, and the coiling direction and the coiling number of turn of each winding 3,4,6,7 are not limited thereto.
As shown in Figure 4, the magnetic circuit of the 1st leakage transformer unit Tr1 by the central flat board 8a of central iron core 2 and outer core 8, hold board 8b, 8c level with both hands and leakage flux constitutes with extension 8d.In this magnetic circuit, utilize the central flat board 8a of central iron core 2 and outer core 8 and hold board 8b, 8c level with both hands, form magnetic circuit 11 with elementary winding 3 and secondary winding 4 interlinkages, utilize simultaneously central iron core 2 and outer core 8 central flat board 8a, hold board 8b and leakage flux extension 8d level with both hands, only form with elementary winding 3 and secondary winding 4 in the leakage magnetic circuit 11L of elementary winding 3 interlinkages.Also between leakage flux is with extension 8d and central iron core 2, the gap is set, or adjusts the length of leakage flux, can adjust the amount of leaking magnetic circuit 11L leakage magnetic flux with this with the gap between extension 8d and the central iron core 2.
On the other hand, the magnetic circuit of the 2nd leakage transformer unit Tr2 by the central flat board 8a of central iron core 5 and outer core 8, hold board 8b, 8c level with both hands and leakage flux constitutes with extension 8e.In this magnetic circuit, utilize the central flat board 8a of central iron core 5 and outer core 8 and hold board 8b, 8c level with both hands, the magnetic circuit 12 of interlinkage on formation and elementary winding 6 and the secondary winding 7, utilize simultaneously central iron core 5 and outer core 8 central flat board 8a, hold board 8b and leakage flux extension 8e level with both hands, only form with elementary winding 6 and secondary winding 7 in the leakage magnetic circuit 12L of elementary winding 6 interlinkages.Also between leakage flux is with extension 8e and central iron core 5, the gap is set, or adjusts the length of leakage flux, can adjust the amount of leaking magnetic circuit 12L leakage magnetic flux with this with the gap between extension 8e and the central iron core 5.
And, in the leakage transformer of example 1, under the situation of the conducting electric current homophase of the elementary winding 6 of the conducting electric current of the elementary winding 3 of the 1st leakage transformer unit Tr1 and the 2nd leakage transformer unit Tr2, shown in the solid arrow or dotted arrow of Fig. 4, externally in the central flat board 8a of iron core 8, the direction of the magnetic flux that elementary winding 3 produces is identical with the direction of the magnetic flux that elementary winding 6 produces.
Be used at leakage transformer under the situation of a plurality of cold-cathode tubes of panel of LCD example 1, on the secondary winding 4 of the 1st leakage transformer unit Tr1, connect cold-cathode tube, on elementary winding 3, connect phase inverter, on the secondary winding 7 of the 2nd leakage transformer unit Tr2, connect other cold-cathode tube again, on elementary winding 6, connect phase inverter, get final product with a plurality of cold-cathode tubes of identical phase driven.Like this can be with two cold-cathode tubes of an element drives.
As mentioned above, the leakage transformer of above-mentioned example 1, possess: have elementary winding 3 and secondary winding 4 the 1st leakage transformer unit Tr1, with the 1st leakage transformer unit Tr1 and row arrangement, have the 2nd leakage transformer unit Tr2 of elementary winding 3 and secondary winding 4 and the outer core 8 of two magnetic circuits of magnetic circuit of the formation magnetic circuit of the 1st leakage transformer unit Tr1 and the 2nd leakage transformer unit Tr2 between the 1st leakage transformer unit Tr1 and the 2nd leakage transformer unit Tr2.
Particularly outer core 8, form both the outside magnetic circuit of the 1st leakage transformer unit Tr1 and the 2nd leakage transformer unit Tr2 between the 1st leakage transformer unit Tr1 and the 2nd leakage transformer unit Tr2.
Like this, because the part of dual-purpose iron core, and it is a leakage transformer that a plurality of leakage transformers unit gathers, and can reduce to be provided with the needed space of a plurality of leakage transformers.
Again, the leakage transformer of above-mentioned example 1, its iron core have the central core 5 in the I type that appends outer core 8 that two of being parallel to this H sections core hold the shape of the extended leakage flux of board 8b, 8c after with extension 8d, 8e level with both hands on the central flat board 8a of H sections core, disposes with extension 8e with the central core 2 of the I type of the front-end configuration of extension 8d and in the face of another front end of holding board 8b, 8c level with both hands and leakage flux in the face of front end of holding board 8b, 8c level with both hands and leakage flux.
Like this, utilize the central core 2 of elementary winding 3, secondary winding 4 and I type to constitute the 1st bar-shaped transformer, utilize the central core 5 of elementary winding 6, secondary winding 7 and I type to constitute the 2nd bar-shaped transformer, simultaneously, outer core 8 is used for two magnetic circuits of the 1st and the 2nd bar-shaped transformer, therefore can reduce to be provided with the needed space of a plurality of leakage transformers.
Example 2
The leakage field iron core of the invention process form 2 has the iron core 2,5,8 identical with example 1, and still, the winding position of winding 3,4,6,7 is had some change.
Fig. 5 is the figure of magnetics structure of the leakage transformer of expression the invention process form 2.Also have, each winding the 3,4,6, the 7th among Fig. 5 is used to illustrate the winding that schematically shows, and the coiling direction and the coiling number of turn of each winding 3,4,6,7 are not limited to shown in the figure.
In example 2, hold reel between with extension 8d a part of 3a of elementary winding 3 of board 8b and leakage flux level with both hands on the central core 2, using the remainder 3b of the elementary winding 3 of coiling on the part of extension 8d with close the leakage flux between the extension 8d holding board 8c and leakage flux level with both hands.Again, on the central core 2 hold level with both hands board 8c and leakage flux with between the extension 8d near the part of holding board 8c level with both hands on coiling secondary winding 4.
Also have, a part of 3a of elementary winding 3 can directly be connected with remainder 3b, also a part of 3a of elementary winding 3 and the terminal of remainder 3b can be connected in terminal 1a, and 1a externally connects by terminal.
Again, in the example 2, hold reel between with extension 8e a part of 6a of elementary winding 6 of board 8b and leakage flux level with both hands on the central core 5, using the remainder 6b of the elementary winding 6 of coiling on the part of extension 8e with close the leakage flux between the extension 8e holding board 8c and leakage flux level with both hands.Again, on the central core 5 hold level with both hands board 8c and leakage flux with between the extension 8e by the part of holding board 8c level with both hands on coiling secondary winding 7.
Also have, a part of 6a of elementary winding 6 can directly be connected with remainder 6b, also a part of 6a of elementary winding 6 and the terminal of remainder 6b can be connected in terminal 1a, and 1a externally connects by terminal.
Also have, leakage flux is to form the leakage flux conducting portion of leakage flux with magnetic circuit with extension 8d, 8e.
As shown in Figure 5, in the magnetic circuit of the 1st leakage transformer unit Tr1, utilize the central flat board 8a of central core 2 and outer core 8 and hold board 8b, 8c level with both hands, form magnetic circuit 11 with elementary winding 3 and secondary winding 4 interlinkages, utilize simultaneously central core 2 and outer core 8 central flat board 8a, hold board 8b and leakage flux extension 8d level with both hands, only form with elementary winding 3 and secondary winding 4 in the leakage magnetic circuit 11L of a part of 3a interlinkage of elementary winding 3.Again, in this magnetic circuit, utilize central core 2 and outer core 8 central flat board 8a, hold board 8c and leakage flux extension 8d level with both hands, form and the remainder 3b of elementary winding and the magnetic circuit 11b of secondary winding 4 interlinkages.Also have, at leakage flux extension 8d, along the direction of the formed magnetic flux of magnetic circuit 11b, with reverse along the direction of leaking the formed magnetic flux of magnetic circuit 11L, the magnetic flux that is taken place by the winding of remainder 3b has weakened the magnetic flux of leakage magnetic circuit 11L.Also can utilize this situation, adjust the turn ratio of a part of 3a and the remainder 3b of elementary winding 3, adjust to leak the magnetic flux of magnetic circuit 11L---the amount of leakage magnetic flux just.By means of this, use gap and a part of 3a of elementary winding 3 and the turn ratio of remainder 3b between leakage flux usefulness extension 8d and the central core 2, can adjust the amount of leakage magnetic flux.
On the other hand, in the 2nd leakage transformer unit Tr2, utilize the central flat board 8a of central core 5 and outer core 8 and hold board 8b, 8c level with both hands, form magnetic circuit 12 with elementary winding 6 and secondary winding 7 interlinkages, utilize simultaneously central core 5 and outer core 8 central flat board 8a, hold board 8b and leakage flux extension 8e level with both hands, only form with elementary winding 6 and secondary winding 7 in the leakage magnetic circuit 12L of a part of 6a interlinkage of elementary winding 6.Again, in this magnetic circuit, utilize central core 5 and outer core 8 central flat board 8a, hold board 8c and leakage flux extension 8e level with both hands, form and the remainder 6b of elementary winding 6 and the magnetic circuit 12b of secondary winding 7 interlinkages.Also have, at leakage flux extension 8e, along the direction of the formed magnetic flux of magnetic circuit 12b, with reverse along the direction of leaking the formed magnetic flux of magnetic circuit 12L, the magnetic flux that is taken place by the winding of remainder 6b has weakened the magnetic flux of leakage magnetic circuit 12L.Also can utilize this situation, adjust the turn ratio of a part of 6a and the remainder 6b of elementary winding 6, adjust to leak the magnetic flux of magnetic circuit 12L---the amount of leakage magnetic flux just.By means of this, use gap and a part of 6a of elementary winding 6 and the turn ratio of remainder 6b between leakage flux usefulness extension 8e and the central core 5, can adjust the amount of leakage magnetic flux.
Also have, other structures of the leakage transformer of example 2, since identical with the situation of example 1, its explanation therefore omitted.
Example 3
The leakage field iron core of the invention process form 3 has the iron core 2,5,8 identical with example 1,2, still, has changed the winding position of winding 3,4,6,7.
Fig. 6 is the magnetics structure chart of the leakage transformer of expression the invention process form 3, also has, and each winding the 3,4,6, the 7th among Fig. 6, the winding that schematically shows that is used to illustrate, the coiling direction and the coiling number of turn of each winding 3,4,6,7 are not limited to shown in the figure.
In example 3, on the central core 2 hold level with both hands board 8b and leakage flux with extension 8d between, near holding the board 8b elementary winding 3 of reeling level with both hands, near a part of 4a of leakage flux with extension 8d coiling secondary winding 4.Again, on the central core 2 hold level with both hands board 8c and leakage flux with extension 8d between, the remainder 4b of coiling secondary winding 4.
Also have, in the example 3, hold board 8b and leakage flux level with both hands with between the extension 8e on the central core 5,, use a part of 7a of extension 8e coiling secondary winding 7 near leakage flux near holding the board 8b elementary winding 6 of reeling level with both hands.Again, the remainder 7b that holds coiling secondary winding 7 between board 8c and the leakage flux usefulness extension 8e level with both hands on the central core 5.
Also have, a part of 4a of secondary winding 4 can directly be connected with remainder 4b, also a part of 4a of secondary winding 4 and the terminal of remainder 4b can be connected in terminal 1a, 1b, externally connects by terminal 1a, 1b.Equally, a part of 7a of secondary winding 7 can directly be connected with remainder 7b, also a part of 7a of secondary winding 7 and the terminal of remainder 7b can be connected in terminal 1a, 1b, externally connects by terminal 1a, 1b.
As shown in Figure 6, in the magnetic circuit of the 1st leakage transformer unit Tr1, utilize the central flat board 8a of central core 2 and outer core 8 and hold board 8b, 8c level with both hands, form magnetic circuit 11 with elementary winding 3 and secondary winding 4 interlinkages, simultaneously, utilize central core 2 and outer core 8 central flat board 8a, hold board 8b and leakage flux extension 8d level with both hands, only form leakage magnetic circuit 11L with a part of 4a interlinkage of elementary winding 3 and secondary winding 4.
On the other hand, in the magnetic circuit of the 2nd leakage transformer unit Tr2, utilize the central flat board 8a of central core 5 and outer core 8 and hold board 8b, 8c level with both hands, form magnetic circuit 12 with elementary winding 6 and secondary winding 7 interlinkages, simultaneously, utilize central core 5 and outer core 8 central flat board 8a, hold board 8b and leakage flux extension 8e level with both hands, only form leakage magnetic circuit 12L with a part of 7a interlinkage of elementary winding 6 and secondary winding 7.
Also have, for other structures of the leakage transformer of example 3, since identical with this structure of example 1, its explanation therefore omitted.
Example 4
Fig. 7 and Fig. 8 are the vertical view and the end views of the leakage transformer of the invention process form 4.
Dual-purpose iron core 51 is on the central flat board 51a of H sections core, append two of being parallel to this H sections core hold level with both hands leakage flux that board 51b, 51c extend with extension 51d, 51e after formed iron core.Dual-purpose iron core 51 is made of magnetic materials such as ferrites.
And then two fore-ends of holding board 51b level with both hands of dual-purpose iron core 51 form the primary side iron core 51b1 of portion of the 1st leakage transformer unit Tr1 and the primary side iron core 51b2 of portion of the 2nd leakage transformer unit Tr2.That is to say that I sections core 54 and the part between the central flat board 51a of holding board 51b level with both hands form the primary side iron core 51b1 of portion, I sections core 57 and the part between the central flat board 51a of holding board 51b level with both hands form the primary side iron core 51b2 of portion.
Again, two fore-ends of holding board 51c level with both hands of dual-purpose iron core 51 form the primary side iron core 51c1 of portion of the 1st leakage transformer unit Tr1 and the primary side iron core 51c2 of portion of the 2nd leakage transformer unit Tr2.That is to say that I sections core 54 and the part between the central flat board 51a of holding board 51c level with both hands form the primary side iron core 51c1 of portion, I sections core 57 and the part between the central flat board 51a of holding board 51c level with both hands form the primary side iron core 51c2 of portion.
And, elementary winding 52 is to be wound in elementary winding on the primary side iron core 51b1 of portion, the 1st leakage transformer unit Tr1, elementary winding 52 is wound on the drum stand 52a that inserts the primary side iron core 51b1 of portion, and the terminal 52b that connects elementary winding 52 terminals is set on the drum stand 52a.And secondary winding 53 is to be wound in secondary winding on the primary side iron core 51c1 of portion, the 2nd leakage transformer unit Tr2, secondary winding 53 is wound on the drum stand 53a that inserts the primary side iron core 51c1 of portion, and the terminal 53b that connects secondary winding 53 terminals is set on the drum stand 53a.Again, I sections core 54 is the iron cores in the face of the front-end configuration of a side front end (front end of the 51b1 of primary side iron core portion and the primary side iron core 51c1 of portion just) of holding board 51b, 51c level with both hands and leakage flux usefulness extension 51d, and I sections core 54 is made of magnetic materials such as ferrites.
In addition, elementary winding 55 is to be wound in elementary winding on the primary side iron core 51b2 of portion, the 2nd leakage transformer unit Tr2, elementary winding 55 is wound on the drum stand 55a that inserts the primary side iron core 51b2 of portion, and the terminal 55b that connects elementary winding 55 terminals is set on the drum stand 55a.And secondary winding 56 is to be wound in secondary winding on the primary side iron core 51c2 of portion, the 2nd leakage transformer unit Tr2, secondary winding 56 is wound on the drum stand 56a that inserts the primary side iron core 51c2 of portion, and the terminal 56b that connects secondary winding 56 terminals is set on the drum stand 56a.Again, I sections core 57 is the iron cores in the face of the front-end configuration of the opposing party's front end (front end of the 51b2 of primary side iron core portion and the primary side iron core 51c2 of portion just) of holding board 51b, 51c level with both hands and leakage flux usefulness extension 51e, and I sections core 57 is made of magnetic materials such as ferrites.
Below, the magnetism characteristic of above-mentioned leakage transformer is described.Fig. 9 represents the magnetics structure of the leakage transformer of example 4, also has, and each winding the 52,53,55, the 56th in Fig. 9, the schematic winding that is used to illustrate, the coiling direction and the coiling number of turn of each winding 52,53,55,56 are not limited to shown in the figure.
As shown in Figure 9, the magnetic circuit of the 1st leakage transformer unit Tr1 by the central flat board 51a of I sections core 54 and dual-purpose iron core 51, hold board 51b, 51c level with both hands and leakage flux constitutes with extension 51d.In this magnetic circuit, utilize I sections core 54, reach the central flat board 51a of dual-purpose iron core 51 and hold board 51b, 51c level with both hands, form magnetic circuit 61 with elementary winding 52 and secondary winding 53 interlinkages, simultaneously, utilize I sections core 54 and dual-purpose iron core 51 central flat board 51a, hold board 51b and leakage flux extension 51d level with both hands, only form with elementary winding 52 and secondary winding 53 in the leakage magnetic circuit 61L of elementary winding 52 interlinkages.In addition, can also be by between leakage flux is with extension 51d and I sections core 54, the gap being set, or adjust leakage flux with the gap length between extension 51d and the I sections core 54, adjust amount by leakage magnetic circuit 61L leakage magnetic flux.
On the other hand, the magnetic circuit of the 2nd leakage transformer unit Tr2 by I sections core 57, and the central flat board 51a of dual-purpose iron core 51, hold board 51b, 51c level with both hands and leakage flux constitutes with extension 51e.In this magnetic circuit, utilize I sections core 57, reach the central flat board 51a of dual-purpose iron core 51 and hold board 51b, 51c level with both hands, form magnetic circuit 62 with elementary winding 55 and secondary winding 56 interlinkages, simultaneously, utilize I sections core 57 and dual-purpose iron core 51 central flat board 51a, hold board 51b and leakage flux extension 51e level with both hands, only form with elementary winding 55 and secondary winding 56 in the leakage magnetic circuit 62L of elementary winding 55 interlinkages.In addition, can also be by between leakage flux is with extension 51e and I sections core 57, the gap being set, or adjust leakage flux with the gap length between extension 51e and the I sections core 57, adjust the amount of leakage magnetic circuit 62L leakage magnetic flux.
And then, in the leakage transformer of example 4, under the conducting electric current of the elementary winding 52 of the 1st leakage transformer unit Tr1 situation identical with the conducting electric current of the elementary winding 55 of the 2nd leakage transformer unit Tr2, shown in the solid arrow or dotted arrow of Fig. 9, in the central flat board 51a of dual-purpose iron core 51, the flow direction that elementary winding 52 produces is identical with the flow direction that elementary winding 55 produces.
Be used at leakage transformer under the situation of a plurality of cold-cathode tubes of panel of LCD, on the secondary winding 53 of the 1st leakage transformer unit Tr1, connect a side cold-cathode tube, on elementary winding 52, connect phase inverter example 4; Again, on the secondary winding 56 of the 2nd leakage transformer unit Tr2, connect the opposing party's cold-cathode tube, on elementary winding 55, connect phase inverter, get final product with a plurality of cold-cathode tubes of identical phase driven.Like this can be with two cold-cathode tubes of an element drives.
As mentioned above, the leakage transformer of above-mentioned example 4, possess: the 1st leakage transformer unit Tr1 with elementary winding 52 and secondary winding 53, with the 1st leakage transformer unit Tr1 and row arrangement, have the 2nd leakage transformer unit Tr2 of elementary winding 55 and secondary winding 56, and the dual-purpose iron core 51 that between the 1st leakage transformer unit Tr1 and the 2nd leakage transformer unit Tr2, forms these two magnetic circuits of magnetic circuit of the magnetic circuit of the 1st leakage transformer unit Tr1 and the 2nd leakage transformer unit Tr2.
Particularly the dual-purpose iron core 51, form the primary side iron core 51b1 of portion of the 1st leakage transformer unit Tr1 and the primary side iron core 51b2 of portion and these two magnetic circuits of the magnetic circuit between the primary side iron core 51c2 of portion of magnetic circuit between the primary side iron core 51c1 of portion and the 2nd leakage transformer unit Tr2.
Like this, the dual-purpose iron core is used on two magnetic circuits of the 1st and the 2nd leakage transformer unit Tr1, Tr2, therefore can reduce to be provided with the space that a plurality of leakage transformers need.
Again, the leakage transformer of above-mentioned example 4, possess: appending the dual-purpose iron core 51 that two of being parallel to this H sections core hold the shape of the extended leakage flux of board 51b, 51c after with extension 51d, 51e level with both hands on the central flat board 51a of H sections core, in the face of front end of holding board 51b, 51c level with both hands and leakage flux I sections core 54 with the front-end configuration of extension 51d, and in the face of another front end of holding board 51b, 51c level with both hands and the leakage flux I sections core 57 with the front-end configuration of extension 51e.
Like this, utilize the part of elementary winding 52, secondary winding 53, I sections core 54 and dual-purpose iron core 51 to constitute the 1st transformer, utilize the part of elementary winding 55, secondary winding 56 and dual-purpose iron core 51 to constitute the 2nd transformer, dual-purpose iron core 51 is used for two magnetic circuits of the 1st and the 2nd transformer, therefore can reduce to be provided with the needed space of a plurality of leakage transformers.
Example 5
The leakage transformer of the invention process form 5 is expansions of the leakage transformer of example 1, has 4 leakage transformer unit.
Figure 10 is the magnetics structure chart of the leakage transformer of expression the invention process form 5, also have, each winding 3,4,6,7,84～87th among Figure 10, the winding that schematically shows that is used to illustrate, the coiling direction and the coiling number of turn of each winding 3,4,6,7,84～87 are not limited to shown in the figure.
As shown in figure 10, in example 5, central core 81 is central core of the 1st and the 3rd leakage transformer unit, is I sections core.Central core 82 is central core of the 2nd and the 4th transformer leakage transformer unit, is I sections core.
Again, elementary winding 84 is elementary windings of the 3rd leakage transformer unit, is wound on the drum stand that inserts central core 81.Secondary winding 85 is secondary winding of the 3rd leakage transformer unit, is wound on the drum stand that inserts central core 81.
Again, elementary winding 86 is elementary windings of the 4th leakage transformer unit, is wound on the drum stand that inserts central core 82.Secondary winding 87 is secondary winding of the 4th leakage transformer unit, is wound on the drum stand that inserts central core 82.
Also have, the magnetics structure and the example 1 of the 1st leakage transformer unit that is made of elementary winding 3, secondary winding 4 etc. in the example 5 and the 2nd leakage transformer unit that is made of elementary winding 6, secondary winding 7 etc. are roughly the same, therefore omit its explanation.
Magnetism characteristic to above-mentioned leakage transformer describes below.
As shown in figure 10, the magnetic circuit of the 1st leakage transformer unit by central core 81, and central flat board 83a, the extension 83c of outer core 83, hold board 83e level with both hands and leakage flux constitutes with extension 83g.In this magnetic circuit, utilize central core 81, reach central flat board 83a, the extension 83c of outer core 83 and hold board 83e level with both hands, form magnetic circuit 11 with elementary winding 3 and secondary winding 4 interlinkages; Simultaneously, utilize central core 81 and outer core 83 central flat board 83a, hold board 83e and leakage flux extension 83g level with both hands, only form with elementary winding 3 and secondary winding 4 in the leakage magnetic circuit 11L of elementary winding 3 interlinkages.
Again, the magnetic circuit of the 2nd leakage transformer unit by central flat board 83a, the extension 83d of central core 82 and outer core 83, hold board 83e level with both hands and leakage flux constitutes with extension 83h.In this magnetic circuit, utilize central core 82, reach central flat board 83a, the extension 83d of outer core 83 and hold board 83e level with both hands, form magnetic circuit 12 with elementary winding 6 and secondary winding 7 interlinkages; Simultaneously, utilize central core 82 and outer core 83 central flat board 83a, hold board 83e and leakage flux extension 83h level with both hands, only form with elementary winding 6 and secondary winding 7 in the leakage magnetic circuit 12L of elementary winding 6 interlinkages.
Again, the magnetic circuit of the 3rd leakage transformer unit by central flat board 83b, the extension 83c of central core 81 and outer core 83, hold board 83f level with both hands and leakage flux constitutes with extension 83i.In this magnetic circuit, utilize central core 81, reach central flat board 83b, the extension 83c of outer core 83 and hold board 83f level with both hands, form magnetic circuit 91 with elementary winding 84 and secondary winding 85 interlinkages; Simultaneously, utilize central core 81 and outer core 83 central flat board 83b, hold board 83f and leakage flux extension 83i level with both hands, only form with elementary winding 84 and secondary winding 85 in the leakage magnetic circuit 91L of elementary winding 84 interlinkages.
Again, the magnetic circuit of the 4th leakage transformer unit by central flat board 83b, the extension 83d of central core 82 and outer core 83, hold board 83f level with both hands and leakage flux constitutes with extension 83j.In this magnetic circuit, utilize central core 82, reach central flat board 83b, the extension 83d of outer core 83 and hold board 83f level with both hands, form magnetic circuit 92 with elementary winding 86 and secondary winding 87 interlinkages; Utilize simultaneously central core 81 and outer core 83 central flat board 83b, hold board 83f and leakage flux extension 83j level with both hands, only form with elementary winding 86 and secondary winding 87 in the leakage magnetic circuit 92L of elementary winding 86 interlinkages.
And, in the leakage transformer of example 5, under the situation of the conducting electric current homophase of the elementary winding 3,6,84,86 of the 1st～the 4th leakage transformer unit, shown in the solid arrow or dotted arrow of Figure 10, externally among the central flat board 83a of iron core 83, the flow direction that elementary winding 3 produces is identical with the flow direction that elementary winding 6 produces; In central flat board 83b, the flow direction that elementary winding 84 produces is identical with the flow direction that elementary winding 86 produces; At extension 83c, the flow direction that elementary winding 3 produces is identical with the flow direction that elementary winding 84 produces; At extension 83d, the flow direction that elementary winding 6 produces is identical with the flow direction that elementary winding 86 produces.
Be used at leakage transformer under the situation of 4 or 4 above cold-cathode tubes of panel of LCD example 5, on the secondary winding 4 of the 1st leakage transformer unit, connect cold-cathode tube, on elementary winding 3, connect phase inverter, again, on the secondary winding 7 of the 2nd leakage transformer unit, connect another cold-cathode tube, on elementary winding 6, connect phase inverter, again, on the secondary winding 85 of the 3rd leakage transformer unit, connect an other cold-cathode tube, on elementary winding 84, connect phase inverter, again, on the secondary winding 87 of the 4th leakage transformer unit and then connect another cold-cathode tube, on elementary winding 86, connect phase inverter, and get final product with 4 cold-cathode tubes of identical phase driven.Like this, just can be with 4 cold-cathode tubes of 1 element drives.
Also have, in example 5,, equally also the leakage transformer of example 2,3 can be expanded though the leakage transformer of example 1 is expanded.
As mentioned above, adopt existing iron core portion between the adjacent leakage transformer unit of 5, one dual-purposes of above-mentioned example, therefore one side, can be reduced into the needed space of a plurality of leakage transformers is set with 4 leakage transformers of an element realization.
Also have, above-mentioned each example is good embodiment of the present invention, still, the invention is not restricted to these examples, only otherwise surmount the scope of aim of the present invention, various distortion and change can be arranged.
For example, in example 1～3, holding board 8b, 8c and leakage flux level with both hands is connected with central core 2,5 with extension 8d, 8e, but also can insert cushion block between with extension 8d, 8e and central core 2,5 holding board 8b, 8c and/or leakage flux level with both hands, or use other measures that the gap is set.Equally, in example 4, hold board 51b, 51c and leakage flux level with both hands and be connected on the I sections core 54,57, still, also can between leakage flux is with extension 51d, 51e and I sections core 54,57, the gap be set with extension 51d, 51e.
Again, in example 1～4, central core 2,5 and I sections core 54,57 are I sections core, outer core 8 and dual-purpose iron core 51 adopt the central primary side of leaning at H sections core that the iron core of leakage flux with the shape of extension 8d, 8e, 51d, 51e is set, but, also the shape of central core 2,5 and I sections core 54,57 can be changed to the E type, the shape of outer core 8 and dual-purpose iron core 51 is changed to the I type, clip I sections core with two E sections cores, realize the core structure identical with example 1～4.
Industrial applicability
The present invention can be used in for example reversed-phase transformer of the backlight drive circuit of liquid crystal display.
Claims (11)
1. a leakage transformer is characterized in that possessing
The 1st leakage transformer unit with elementary winding and secondary winding,
With described the 1st leakage transformer unit and row arrangement, have the 2nd leakage transformer unit of elementary winding and secondary winding, and
Between described the 1st leakage transformer unit and the 2nd leakage transformer unit, form the dual-purpose iron core of two magnetic circuits of the magnetic circuit of the magnetic circuit of described the 1st leakage transformer unit and the 2nd leakage transformer unit.
2. leakage transformer as claimed in claim 1, it is characterized in that, described dual-purpose iron core have the part of the described elementary winding on described the 1st leakage transformer unit and/or described the 2nd leakage transformer unit, and the remainder of described elementary winding and described secondary winding between form the leakage flux conducting portion of the magnetic circuit that leakage flux uses.
3. leakage transformer as claimed in claim 1, it is characterized in that, described dual-purpose iron core have the part of described elementary winding on described the 1st leakage transformer unit and/or described the 2nd leakage transformer unit and described secondary winding, and the remainder of described secondary winding between form the leakage flux conducting portion of the magnetic circuit that leakage flux uses.
4. a leakage transformer is characterized in that possessing
The 1st leakage transformer unit with central core and the elementary winding of on this central core, reeling and secondary winding,
With described the 1st leakage transformer unit and row arrangement, have the 2nd leakage transformer unit of central core and elementary winding of on this central core, reeling and secondary winding, and
Between described the 1st leakage transformer unit and described the 2nd leakage transformer unit, form the outer core of the outside magnetic circuit of described the 1st leakage transformer unit and described the 2nd leakage transformer unit.
5. leakage transformer as claimed in claim 4, it is characterized in that, described outer core have the part of the described elementary winding on described the 1st leakage transformer unit and/or described the 2nd leakage transformer unit, and the remainder of described elementary winding and described secondary winding between form the leakage flux conducting portion of the magnetic circuit that leakage flux uses.
6. leakage transformer as claimed in claim 4, it is characterized in that, described outer core have the part of described elementary winding on described the 1st leakage transformer unit and/or described the 2nd leakage transformer unit and described secondary winding, and the remainder of described secondary winding between form the leakage flux conducting portion of the magnetic circuit that leakage flux uses.
7. a leakage transformer is characterized in that possessing
Append the dual-purpose iron core that two of being parallel to this H sections core hold the shape of the extended leakage flux of board after with extension level with both hands at the central flat board of H sections core,
In the face of a described front end of board and the one 1 sections core that described leakage flux is used a front-end configuration of extension of holding level with both hands,
In the face of described another front end of board and the 2nd I sections core that described leakage flux is used another front-end configuration of extension of holding level with both hands,
In a described I sections core, hold the 1st elementary winding that board and described leakage flux are reeled between with extension level with both hands a side described at least,
A described I sections core, at least the opposing party described hold level with both hands board and described leakage flux with reel between the extension, with magnetic-coupled the 1st secondary winding of the described the 1st elementary winding,
At described the 2nd I sections core, hold the 2nd elementary winding that board and described leakage flux are reeled between with extension level with both hands a side described at least, and
Described the 2nd I sections core, at least the opposing party described hold level with both hands board and described leakage flux with reel between the extension, with magnetic-coupled the 2nd secondary winding of the described the 2nd elementary winding.
8. leakage transformer as claimed in claim 7, it is characterized in that, the described the 1st elementary winding and/or the described the 2nd elementary winding, its part is wound in the described of a side to be held level with both hands between board and the described leakage flux usefulness extension, and remainder is wound in the described of the opposing party and holds level with both hands between board and the described leakage flux usefulness extension.
9. leakage transformer as claimed in claim 7, it is characterized in that, described the 1st secondary winding and/or described the 2nd secondary winding, its part is wound in the described of a side to be held level with both hands between board and the described leakage flux usefulness extension, and remainder is wound in the described of the opposing party and holds level with both hands between board and the described leakage flux usefulness extension.
10. a leakage transformer is characterized in that possessing
The 1st leakage transformer unit of the secondary winding that has the elementary winding of reeling and reel in primary side iron core portion in primary side iron core portion,
With described the 1st leakage transformer unit and row arrangement, have in the 2nd leakage transformer unit of the elementary winding of reeling in the primary side iron core portion and the secondary winding of in primary side iron core portion, reeling, and
Between described the 1st leakage transformer unit and described the 2nd leakage transformer unit, form the primary side iron core portion of described the 1st leakage transformer unit and the magnetic circuit between the primary side iron core portion and, the dual-purpose iron core of two magnetic circuits of the primary side iron core portion of described the 2nd leakage transformer unit and the magnetic circuit between the primary side iron core portion.
11. a leakage transformer is characterized in that possessing
Append the dual-purpose iron core that two of being parallel to this H sections core hold the shape of the extended leakage flux of board after with extension level with both hands at the central flat board of H sections core,
In the face of a described front end of board and the I sections core that described leakage flux is used a front-end configuration of extension of holding level with both hands,
In the face of described another front end of board and the 2nd I sections core that described leakage flux is used another front-end configuration of extension of holding level with both hands,
Hold board level with both hands a side described, be wound in the 1st elementary winding between a described I sections core and the described central flat board,
Hold board level with both hands the opposing party described, be wound between a described I sections core and the described central flat board, with magnetic-coupled the 1st secondary winding of the described the 1st elementary winding,
Hold board level with both hands a side described, be wound in the 2nd elementary winding between described the 2nd I sections core and the described central flat board, and
Hold board level with both hands the opposing party described, be wound between described the 2nd I sections core and the described central flat board, with magnetic-coupled the 2nd secondary winding of the described the 2nd elementary winding.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004261528A JP4348263B2 (en) | 2004-09-08 | 2004-09-08 | Leakage transformer |
| JP2004261528 | 2004-09-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1747082A true CN1747082A (en) | 2006-03-15 |
| CN100543888C CN100543888C (en) | 2009-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100921553A Expired - Fee Related CN100543888C (en) | 2004-09-08 | 2005-08-23 | Leakage transformer |
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| Country | Link |
|---|---|
| JP (1) | JP4348263B2 (en) |
| CN (1) | CN100543888C (en) |
| TW (1) | TWI276121B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101136283B (en) * | 2006-09-01 | 2012-07-04 | 东京零件工业股份有限公司 | Reverse-phase convertor |
| CN110221159A (en) * | 2019-07-18 | 2019-09-10 | 杭州电力设备制造有限公司 | A kind of fault detection method, system and the equipment of the transformer based on iron core leakage field |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4676974B2 (en) * | 2006-09-15 | 2011-04-27 | 光詮科技股▲フェン▼有限公司 | Method for adjusting mutual inductance and transformer adjusted by the method |
| JP4930596B2 (en) * | 2007-09-19 | 2012-05-16 | パナソニック株式会社 | Transformer and power supply using the same |
| CN102194567B (en) * | 2010-03-18 | 2013-01-02 | 台达电子工业股份有限公司 | Combined transformer structure |
| JP4800431B2 (en) * | 2010-03-30 | 2011-10-26 | 東京パーツ工業株式会社 | Inverter transformer |
| JP6417206B2 (en) * | 2014-12-19 | 2018-10-31 | 株式会社豊田自動織機 | Power converter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3386972B2 (en) * | 1997-02-21 | 2003-03-17 | スミダコーポレーション株式会社 | Inverter transformer and method of manufacturing the same |
-
2004
- 2004-09-08 JP JP2004261528A patent/JP4348263B2/en not_active Expired - Fee Related
-
2005
- 2005-08-23 TW TW94128746A patent/TWI276121B/en not_active IP Right Cessation
- 2005-08-23 CN CNB2005100921553A patent/CN100543888C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101136283B (en) * | 2006-09-01 | 2012-07-04 | 东京零件工业股份有限公司 | Reverse-phase convertor |
| CN110221159A (en) * | 2019-07-18 | 2019-09-10 | 杭州电力设备制造有限公司 | A kind of fault detection method, system and the equipment of the transformer based on iron core leakage field |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100543888C (en) | 2009-09-23 |
| TWI276121B (en) | 2007-03-11 |
| JP4348263B2 (en) | 2009-10-21 |
| TW200609957A (en) | 2006-03-16 |
| JP2006080236A (en) | 2006-03-23 |
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