JPS646526B2 - - Google Patents
Info
- Publication number
- JPS646526B2 JPS646526B2 JP18001581A JP18001581A JPS646526B2 JP S646526 B2 JPS646526 B2 JP S646526B2 JP 18001581 A JP18001581 A JP 18001581A JP 18001581 A JP18001581 A JP 18001581A JP S646526 B2 JPS646526 B2 JP S646526B2
- Authority
- JP
- Japan
- Prior art keywords
- winding
- wound
- coil
- high frequency
- core
- 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.)
- Expired
Links
- 238000004804 winding Methods 0.000 claims description 22
- 238000010586 diagram Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
- H01F17/06—Fixed inductances of the signal type with magnetic core with core substantially closed in itself, e.g. toroid
- H01F17/062—Toroidal core with turns of coil around it
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Coils Or Transformers For Communication (AREA)
Description
【発明の詳細な説明】
本発明は、チヨークコイルの高周波インピーダ
ンス特性の改良に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvement of high frequency impedance characteristics of a chiyoke coil.
従来より、コイルを二層巻にしたチヨークコイ
ルは、ノイズフイルター等に使用されている。第
１図に、従来のチヨークコイルの一例を示す。コ
イルをＡより巻き始めて、周方向に巻線した後、
更にもう一度同一周方向に巻線し、Ｂ端子とす
る。しかして、この従来タイプの高周波インピー
ダンス特性を第３図に、曲線Ｂで示してある。こ
のインピーダンス特性は、外径14mm、内径７mm、
高さ６mmの圧粉磁心に、直径0.6mmの線材を50タ
ーン巻いて測定した。 BACKGROUND ART Conventionally, a double-layered coil has been used for noise filters and the like. FIG. 1 shows an example of a conventional chiyoke coil. Start winding the coil from A, and after winding in the circumferential direction,
Furthermore, wind the wire once again in the same circumferential direction to form the B terminal. The high frequency impedance characteristic of this conventional type is shown by curve B in FIG. This impedance characteristic has an outer diameter of 14 mm, an inner diameter of 7 mm,
Measurements were taken by winding 50 turns of a wire rod with a diameter of 0.6 mm around a powder magnetic core with a height of 6 mm.
本発明は、従来チヨークコイルに比較して、高
周波インピーダンス特性を一段と向上させたもの
である。 The present invention further improves high frequency impedance characteristics as compared to conventional chiyoke coils.
第２図に、本発明の実施例を示してあるトロイ
ダルコア２０に端子２１からコア２０の半周分だ
けコイル２２，２３を往復巻装してある。コイル
２３は、コイル２４に連続しており、コア２０の
残り半周分にも、コイル２４，２５を往復巻装し
てある。往巻線２４と、復巻線２５の折り返し地
点を２７で示してある。 FIG. 2 shows an embodiment of the present invention.A toroidal core 20 is wound with coils 22 and 23 reciprocally around a half circumference of the core 20 from a terminal 21. The coil 23 is continuous with the coil 24, and the remaining half circumference of the core 20 is also wound with coils 24 and 25 reciprocatingly. The turning point of the forward winding 24 and the backward winding 25 is indicated by 27.
外径14mm、内径７mm、高さ６mmの圧粉磁心に、
直径0.6mmの線材を第２図に示す巻線方法により
50ターン巻いて構成したチヨークコイルの高周波
インピーダンス特性を第３図曲線Ａで示してあ
る。曲線Ａ，Ｂとの比較により示される様に、実
施例ではインピーダンスの最大値の向上と、最大
値が従来チヨークコイルに比較して、高周波側に
ずれており、高周波インピーダンス特性の改善が
得られている。 A powder magnetic core with an outer diameter of 14 mm, an inner diameter of 7 mm, and a height of 6 mm.
A wire with a diameter of 0.6 mm is wound using the winding method shown in Figure 2.
The high frequency impedance characteristic of a chiyoke coil constructed by winding 50 turns is shown by curve A in Fig. 3. As shown by the comparison with curves A and B, in the example, the maximum value of impedance was improved, and the maximum value was shifted to the high frequency side compared to the conventional chiyork coil, and the high frequency impedance characteristics were improved. There is.
高域で、インピーダンスが低下しない理由を推
測する。高域でインピーダンスが低下する原因の
一つは、巻線間の分布容量によるものがある。本
発明の巻線に依ると、その分布容量が従来方法に
比べて小さい。第４図は、説明のための実施例の
部分模式図である。磁心４１に巻線４２，４３が
施こしてある。この巻線４２に注目すると、電流
が図中右から左へ流れており、図中下側に記載の
＋，−のような電位差が生じ、これにより矢印Ａ
のような電気力線が発生する。この電気力線が分
布容量の原因となる。また、巻線４３に注目する
と、電流が図中左から右へ流れており、図中上側
に記載の＋，−のような電位差が生じ、これによ
り矢印Ｂのような電気力線が発生する。この巻線
４２による電気力線と巻線４３による電気力線と
が互いに打ち消しあうことにより分布容量が減少
し、高域でのインピーダンス特性が改善されるも
のである。 Guess why the impedance does not drop at high frequencies. One of the reasons why the impedance decreases at high frequencies is due to the distributed capacitance between the windings. According to the winding of the present invention, its distributed capacitance is smaller than that of the conventional method. FIG. 4 is a partial schematic diagram of an example for explanation. Windings 42 and 43 are wound around the magnetic core 41. If we pay attention to this winding 42, we can see that the current flows from right to left in the figure, and a potential difference as shown in + and - shown at the bottom of the figure is generated, which causes the arrow A
Electric lines of force such as are generated. These electric lines of force cause distributed capacitance. Also, if you pay attention to the winding 43, the current flows from left to right in the figure, and a potential difference like + and - shown on the upper side of the figure occurs, which generates electric lines of force like arrow B. . The lines of electric force caused by the winding 42 and the lines of electric force caused by the winding 43 cancel each other out, thereby reducing the distributed capacitance and improving the impedance characteristics in the high range.
つまり、本発明のような往復巻線とすることに
より、線間の分布容量を低減させ、高域でのイン
ピーダンス特性を向上させるものである。 In other words, by using a reciprocating winding as in the present invention, the distributed capacitance between the wires is reduced and the impedance characteristics in the high range are improved.
第１図は従来チヨークコイルの平面図、第２図
は実施例の平面図、第３図は従来チヨークコイル
と実施例との高周波インピーダンス特性の比較
図、第４図は模式図である。
２０：トロイダルコア、２１，２６：端子。
FIG. 1 is a plan view of a conventional Chi-Yoke coil, FIG. 2 is a plan view of an embodiment, FIG. 3 is a comparison diagram of high frequency impedance characteristics between the conventional Chi-Yoke coil and the embodiment, and FIG. 4 is a schematic diagram. 20: toroidal core, 21, 26: terminal.
Claims (1)
てなるチヨークコイルにおいて、前記巻線が、巻
始めから前記コアの約半周分巻かれたところで折
り返されて巻始め方向へ戻りながら巻かれ、更に
巻始め部を通過し残り半周分巻かれ、該残り半周
分巻かれたところで折り返されて、巻始め方向へ
戻りながら巻かれ、前記巻始め部分で巻終りとな
つていることを特徴とするチヨークコイル。1. In a chi-yoke coil formed by winding a soft magnetic core forming a closed magnetic path, the winding is folded back after being wound approximately half the circumference of the core from the start of winding, and is wound while returning in the direction of the start of winding; It is further characterized in that it passes through the winding start part, is wound for the remaining half turn, is turned back after the remaining half turn, and is wound while returning in the direction of the winding start, and ends at the winding start part. Chiyoke coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18001581A JPS5880810A (en) | 1981-11-10 | 1981-11-10 | Choke coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18001581A JPS5880810A (en) | 1981-11-10 | 1981-11-10 | Choke coil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5880810A JPS5880810A (en) | 1983-05-16 |
| JPS646526B2 true JPS646526B2 (en) | 1989-02-03 |
Family
ID=16075962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18001581A Granted JPS5880810A (en) | 1981-11-10 | 1981-11-10 | Choke coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5880810A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5942023U (en) * | 1982-09-10 | 1984-03-17 | 株式会社トーキン | Choke coil for noise filter |
| JP5074894B2 (en) * | 2007-11-13 | 2012-11-14 | 長野日本無線株式会社 | Coil and coil manufacturing method |
| JP5074895B2 (en) * | 2007-11-13 | 2012-11-14 | 長野日本無線株式会社 | Coil device |
| JP5273817B2 (en) * | 2010-03-27 | 2013-08-28 | 富士通テレコムネットワークス株式会社 | Boosting coil for power factor correction circuit and AC-DC converter having the same |
-
1981
- 1981-11-10 JP JP18001581A patent/JPS5880810A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5880810A (en) | 1983-05-16 |
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