High-voltage transformer

A high-voltage transformer and winding technology, applied in the field of high-voltage transformers, can solve the problems of adjustment error and difficult fine adjustment of leakage inductance

Inactive Publication Date: 2006-11-29
SUMIDA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the technique described in Patent Document 1, since the magnetic circuit is divided into the first magnetic circuit and the second magnetic circuit, and the second magnetic circuit is provided with a winding portion that changes the coupling coefficient, it is possible to adjust the leakage inductance. Errors may occur, and it may be difficult to make fine adjustments

Method used

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no. 1 approach

[0044] Figure 1 ~ Figure 3 Showing the high-voltage transformer of the first embodiment of the present invention, figure 1 Is an exploded perspective view of a high-voltage transformer, figure 2 Is a longitudinal section view of a high voltage transformer, image 3 It is a bottom view of the coil skeleton of a high-voltage transformer.

[0045] Such as figure 1 as well as figure 2 As shown, the high-voltage transformer of the first embodiment of the present invention is formed as follows: at both ends of the outer peripheral surface of the coil bobbin 1 having the transverse hollow portion 2 and near arbitrary ends (such as Figure 1 ~ Figure 3 In the example shown, close to the left end), flanges 3a, 3b, 3c are provided, terminal blocks 4 are provided on the left and right lower sides of the coil bobbin 1, and E-cores 5 are assembled from the left and right sides of the coil bobbin 1. .

[0046] The E-shaped core 5 is made of, for example, ferrite. The central leg 5a is ins...

no. 2 approach

[0056] Figure 4 ~ Figure 6 Showing the high-voltage transformer of the second embodiment of the present invention, Figure 4 Is an exploded perspective view of a high-voltage transformer, Figure 5 Is a longitudinal section view of a high voltage transformer, Figure 6 It is a bottom view of the coil skeleton of a high-voltage transformer.

[0057] Such as Figure 4 as well as Figure 5 As shown, the high-voltage transformer of the second embodiment of the present invention is formed as follows: flanges 23a and 23d are provided at both ends of the outer peripheral surface of a coil bobbin 21 having a transverse hollow portion 22, and a left and right transformer is provided in the center. The pair of flanges 23b and 23c are provided with terminal blocks 24 on the left and right sides of the lower part of the coil bobbin 21, respectively, and E-shaped cores 25 are assembled from the left and right sides of the bobbin 21, respectively.

[0058] The E-core 25 is constituted by subst...

Embodiment approach

[0067] The high-voltage transformer of the present invention is particularly preferably used in a high-pressure discharge lamp circuit, but if it is necessary to change the coupling coefficient of the primary winding and the secondary winding to adjust the leakage inductance, it can also be applied to various other transformers.

[0068] Also, the core used in the high-voltage transformer is preferably formed of ferrite, but in addition to this, for example, permalloy, sendust, carbonyl iron and other materials can also be used. Iron powder core obtained by compression molding of fine powder.

[0069] In addition, in each embodiment, two E-shaped cores are joined to form a core, but an I-shaped core and a U-shaped core may be combined to form a core.

[0070] In addition, the number of divisions of the primary winding is not limited to two, it may be three or more, and it may not be divided. In addition, the number of windings of the primary winding, the secondary winding, and the...

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Abstract

A high-voltage transformer the leakage inductance of which can be accurately and easily regulated. Winding frames of a primary-side winding (6), a secondary-side winding (7), and a magnetic-coupling adjusting winding (8) are provided so that the primary-side winding (6), the secondary-side winding (7), and magnetic-coupling adjusting winding (8) are placed in a common magnetic path. A part of either the primary-side winding (6) or the secondary-side winding (7) is wound around the frame of the magnetic-coupling adjusting winding (8). The frames of the primary-side winding (6) and the secondary-side winding (7) can be formed into a common frame, and the primary-side winding (6) and the secondary-side winding (7) can be wound superimposedly around the common winding frame. The frames of the primary-side winding (6) and the secondary-side winding (7) can be so provided on both sides of the frame of the magnetic-coupling adjusting winding (8) as to sandwich the frame of the magnetic-coupling adjusting winding (8).

Description

Technical field [0001] The invention relates to a high-voltage transformer used in a high-pressure discharge lamp circuit. Background technique [0002] Conventionally, as a high-voltage transformer used in a high-pressure discharge lamp circuit, it has been known to adjust the leakage current by changing the coupling coefficient of the primary winding and the secondary winding in order to suit the rating of the high pressure discharge lamp or the constant of the power supply circuit. Sense of high voltage transformer. [0003] In order to change the coupling coefficient of the primary winding and the secondary winding to adjust the leakage inductance, it is known to use cores with different gap widths. However, in order to be suitable for various rated high pressure discharge lamps or those with different constants Various power supply circuits inevitably require a huge variety of cores, which causes the problem of rising costs. [0004] In order to cope with such problems, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/28H01F38/08H01F27/30H01F27/32H01F27/38H01F29/14
CPCH01F27/38H01F27/306H01F2005/043H01F29/14H01F27/325
Inventor 菅野知志
Owner SUMIDA CORP
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