JPS6032310A - Choke coil - Google Patents
Choke coilInfo
- Publication number
- JPS6032310A JPS6032310A JP14120083A JP14120083A JPS6032310A JP S6032310 A JPS6032310 A JP S6032310A JP 14120083 A JP14120083 A JP 14120083A JP 14120083 A JP14120083 A JP 14120083A JP S6032310 A JPS6032310 A JP S6032310A
- Authority
- JP
- Japan
- Prior art keywords
- core
- choke coil
- magnetic
- tape
- outer circumference
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F37/00—Fixed inductances not covered by group H01F17/00
Abstract
Description
【発明の詳細な説明】
本発明はドラム形コアに巻線を巻回し、コアの外周を薄
いテープ状の磁性材にて覆ってなるチョークコイルであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention is a choke coil in which a wire is wound around a drum-shaped core, and the outer periphery of the core is covered with a thin tape-like magnetic material.
中波放送塔などの強電界下近傍にある電話回線の引込線
に接がる電話機または端末機器などにおいては、中波電
磁波が結合し、信号線と天地間に妨害電圧のようなコモ
ンモードノイズが発生し９機器を誤動作させ１通信に障
害などを与えることがある。In telephones or terminal equipment connected to telephone line drop-in lines located near strong electric fields such as medium-wave broadcasting towers, medium-wave electromagnetic waves are coupled, and common mode noise such as interference voltage is generated between the signal line and the ground. This can cause 9 devices to malfunction and 1 to cause communication problems.
従来これらの妨害電圧を減衰させるだめにコモン・モー
ド・チョークコイルを電話回線に挿入する。しかしこの
種のチョークコイルにおいて、ドラム形コアを使用する
ものにあっては。Conventionally, common mode choke coils are inserted into telephone lines to attenuate these interfering voltages. However, this type of choke coil uses a drum-shaped core.
磁気的に開磁路であるので、実効透磁率が低く。Since it is a magnetically open magnetic path, the effective magnetic permeability is low.
任意の形状で大きなインダクタンスを得るため巻線の巻
回数が多くなり、したがって巻線長による直流抵抗が増
大し、まだ巻線間の浮遊容量のため、ある周波数でＱの
値の高い周波数共振を生ずる欠点がある。またコイルの
Ｑの値の高いことは雷のサージ電圧のようなインパルス
性の電圧に対するインパルス性ノイズを振動させ。In order to obtain a large inductance with an arbitrary shape, the number of turns of the winding is increased, so the DC resistance due to the winding length increases, and due to the stray capacitance between the windings, a frequency resonance with a high Q value may occur at a certain frequency. There are drawbacks that arise. Also, the high Q value of the coil oscillates impulsive noise in response to impulsive voltage such as lightning surge voltage.
容易にノイズを減衰しない欠点があり、チョークコイル
のＱの値は小さいことが望捷しい。It has the disadvantage that it does not easily attenuate noise, so it is desirable that the Q value of the choke coil be small.
本発明は従来のかかる欠点を除き、チョークコイルの外
周を磁性材よりなるテープにて覆い。The present invention eliminates this drawback of the conventional method and covers the outer periphery of the choke coil with a tape made of magnetic material.
磁気回路を閉磁路とし実効透磁率を増加させ。Make the magnetic circuit a closed magnetic path and increase the effective magnetic permeability.
巻線の巻回数が少なく、直流抵抗を減少せしめるととも
に、コイルのＱの値を低下せしめるにある。The number of turns of the winding is small, which reduces DC resistance and reduces the Q value of the coil.
本発明の実施例は第１図に示すように磁心１の両端外周
に外方に向けて鍔２，２′を突出させ、フェライト材の
ドラム形コア３が成形される。このコア３の磁心１にマ
グネットワイアのコモン巻キ巻線４を巻回し、さらにコ
ア３の外周に、たとえハ鉄、ハーマロイ、アモルファス
磁性体のような磁性材よシなる薄いテープ５を巻回し、
テープの外周を熱収縮性チューブ６にて覆いチョークコ
イルが形成される。また一方の鍔２の外壁に４本の端子
７が埋設される絶縁性端子台８を接着し、端子７にそれ
ぞれの巻線の末端を巻き付は半田付けし、コモン・モー
ド・チョークコイルが得られる。In the embodiment of the present invention, as shown in FIG. 1, flanges 2 and 2' are protruded outward from the outer periphery of both ends of a magnetic core 1, and a drum-shaped core 3 of ferrite material is formed. A common winding 4 of magnet wire is wound around the magnetic core 1 of the core 3, and a thin tape 5 made of a magnetic material such as iron, hermalloy, or amorphous magnetic material is further wound around the outer periphery of the core 3. ,
A choke coil is formed by covering the outer periphery of the tape with a heat-shrinkable tube 6. In addition, an insulating terminal block 8 in which four terminals 7 are embedded is glued to the outer wall of one of the collars 2, and the ends of each winding are wrapped and soldered around the terminals 7, and a common mode choke coil is connected. can get.
したがってこのコモン・モード・チョークコイルは第２
図に示すような等何回路となり、入力９と出力１０とを
電話回線に挿入する。Therefore, this common mode choke coil
The circuit is as shown in the figure, and input 9 and output 10 are inserted into the telephone line.
−例をあげれば、ドラムコアの寸法を外径１４φ軸径３
．４φ、溝幅３閣、ツ・ぐ厚さ２ ＋ｎｍ 、全長７漏
とし、材質フェライト、透磁率４００の磁心にポリウレ
タンＭＭＯ，１６φ２種を２００ターンコモ閣、厚さ１
００μ、長さ４２胴とし、材質パーマロイ）を１ターン
巻く。マグネットワイヤーの各線は端子台の端子に電気
的に接続した。この結果巻線の直流抵抗は５Ωであった
。一方同一磁心に巻線を施しだ従来のチョークコイルで
は同一インダクタンスを得るにはポリウレタン銅線０１
２φ１種を３２０ターン巻くことが必要となり、直流抵
抗は１２Ωであった。この比較から明なように外周に巻
く磁気テープによる効果は大きい。-For example, the dimensions of the drum core are outer diameter 14φ shaft diameter 3
．． 4 φ, groove width 3, thread thickness 2 + nm, total length 7 leakage, material ferrite, magnetic core with magnetic permeability 400, polyurethane MMO, 2 types of 16 φ 200 turns, thickness 1
00μ, length 42, and one turn of material (permalloy) is wound. Each line of the magnet wire was electrically connected to a terminal on the terminal block. As a result, the direct current resistance of the winding was 5Ω. On the other hand, in a conventional choke coil in which wires are wound around the same magnetic core, polyurethane copper wire 01 is required to obtain the same inductance.
It was necessary to wind 320 turns of one type of 2φ, and the DC resistance was 12Ω. As is clear from this comparison, the effect of the magnetic tape wound around the outer circumference is significant.
磁気テープ５はフェライト磁心に密着させるように巻き
つけ外周磁気テープ端は短絡しないように巻くことが肝
要である。まだ外周磁気テープの長さを調整することに
より実効透磁率の調整が可能となシ、このことは磁気テ
ープを用いる利点の一つでもある。It is important to wrap the magnetic tape 5 so as to tightly contact the ferrite magnetic core and to avoid short-circuiting the ends of the outer magnetic tape. It is still possible to adjust the effective magnetic permeability by adjusting the length of the outer magnetic tape, which is one of the advantages of using magnetic tape.
磁気テープの更に１つの特長はチョークのインピーダン
ス特性においてチョークのＱを従来のチョークと比較し
て低くすることができる。例えば磁気テープとしてパー
マロイを使用した例を第３図に示す。図においてＡは従
来のチョークＢは本発明に依るチョークの共振時のイン
ピーダンスとの比較を示しだものであるが、・ヤーマロ
イ自身の磁気抵抗が大きいためＱを低下することができ
る。Another feature of the magnetic tape is that the impedance characteristic of the choke is such that the Q of the choke can be lowered compared to conventional chokes. For example, FIG. 3 shows an example in which permalloy is used as the magnetic tape. In the figure, A shows a comparison between the conventional choke B and the impedance at resonance of the choke according to the present invention. Since YARMALLOY itself has a large magnetic resistance, Q can be lowered.
本来チョークコイルのＱは高いはソ良い場合が普通であ
るが、これもその用途如何による。例えば本発明による
チョークコイルをコモンモードチョークとして使用する
場合は線路にインピーダンスは挿入されないが、アース
と線路間に加わる信号（この場合は一般にノイズ）に対
しては、このチョークコイルは大きなインピーダンスと
して作用する。この目的に対して使用されるチョークコ
イルは線路とアース間に誘導されるノイズによって機器
が誤動作をおこし場合によっては破壊される危険を防止
するに役立つ。Ｑが高いチョークコイルを使用した場合
チョークコイル自身の共振現象によ如、侵入ノイズが共
振周波数で増幅されてしまう危険性もある。か５る現象
はチョークコイルのインピーダンスの共振を抑制するこ
とによシ軽減できる。即ちＱを低くすることによシこの
目的を達成することができる。このように磁気テープの
材質を変更することによって共振のＱを低くすることが
できる。Normally, a choke coil with a high Q value would be good, but this also depends on its use. For example, when the choke coil according to the present invention is used as a common mode choke, no impedance is inserted into the line, but the choke coil acts as a large impedance for signals (generally noise in this case) applied between the ground and the line. do. Choke coils used for this purpose help prevent equipment from malfunctioning or even being destroyed by noise induced between the line and ground. If a choke coil with a high Q is used, there is a risk that intrusion noise will be amplified at the resonance frequency due to the resonance phenomenon of the choke coil itself. This phenomenon can be alleviated by suppressing the impedance resonance of the choke coil. That is, this objective can be achieved by lowering Q. By changing the material of the magnetic tape in this way, the resonance Q can be lowered.
本考案のチョークコイルはドラムコアを基本としてお９
１巻き線が容易であること、外周磁気テープも単にコア
の外周に巻くだけの構造であることから製作が容易であ
り、上記の如き種々の効果を期待することができる。The choke coil of this invention is based on a drum core.
Since one winding is easy and the outer magnetic tape is simply wound around the outer periphery of the core, it is easy to manufacture, and the various effects described above can be expected.
第１図は本発明の実施例のチョークコイルの外観図で、
（ａ）は正面図、（ｂ）は底面図、第２図は本発明によ
るチョークコイルの等価回路図、第３図は従来のチョー
クコイルと本発明によるチョークコイルとの周波数特性
図である。
なお
１：磁心、２．２’：鍔、３：コア、４：巻線。
５：テープ、６：熱収縮性チー−プ、７：端子。
８：端子台、９：入力、１０：出力。FIG. 1 is an external view of a choke coil according to an embodiment of the present invention.
(a) is a front view, (b) is a bottom view, FIG. 2 is an equivalent circuit diagram of a choke coil according to the present invention, and FIG. 3 is a frequency characteristic diagram of a conventional choke coil and a choke coil according to the present invention. Note that 1: magnetic core, 2.2': tsuba, 3: core, 4: winding. 5: Tape, 6: Heat-shrinkable cheap, 7: Terminal. 8: Terminal block, 9: Input, 10: Output.
Claims (1)
よりなるドラム形コアに巻線を巻回し。 コアの外周を薄いテープ状の磁性料にて覆うことを特徴
とするチョークコイル。[Claims] 1. A wire is wound around a drum-shaped core made of magnetic material with flanges projecting outward from the outer periphery of both ends of the magnetic core. A choke coil characterized by covering the outer periphery of the core with a thin tape-shaped magnetic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14120083A JPS6032310A (en) | 1983-08-03 | 1983-08-03 | Choke coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14120083A JPS6032310A (en) | 1983-08-03 | 1983-08-03 | Choke coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6032310A true JPS6032310A (en) | 1985-02-19 |
Family
ID=15286471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14120083A Pending JPS6032310A (en) | 1983-08-03 | 1983-08-03 | Choke coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6032310A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62154705A (en) * | 1985-12-27 | 1987-07-09 | Tohoku Metal Ind Ltd | Manufacture of non-linear inductor |
| JPS633107U (en) * | 1986-06-23 | 1988-01-11 | ||
| JPH01258353A (en) * | 1986-10-24 | 1989-10-16 | Natl Res Dev Corp | Control and/or analysis of charged particles |
| FR2739218A1 (en) * | 1995-09-27 | 1997-03-28 | Legrand Sa | Electrical appliance |
| US5789747A (en) * | 1996-05-21 | 1998-08-04 | Hitachi, Ltd. | Three dimensional quadrupole mass spectrometry and mass spectrometer |
| US6590203B2 (en) | 1999-12-02 | 2003-07-08 | Hitachi, Ltd. | Ion trap mass spectroscopy |
-
1983
- 1983-08-03 JP JP14120083A patent/JPS6032310A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62154705A (en) * | 1985-12-27 | 1987-07-09 | Tohoku Metal Ind Ltd | Manufacture of non-linear inductor |
| JPH0575162B2 (en) * | 1985-12-27 | 1993-10-20 | Tokin Corp | |
| JPS633107U (en) * | 1986-06-23 | 1988-01-11 | ||
| JPH01258353A (en) * | 1986-10-24 | 1989-10-16 | Natl Res Dev Corp | Control and/or analysis of charged particles |
| FR2739218A1 (en) * | 1995-09-27 | 1997-03-28 | Legrand Sa | Electrical appliance |
| US5789747A (en) * | 1996-05-21 | 1998-08-04 | Hitachi, Ltd. | Three dimensional quadrupole mass spectrometry and mass spectrometer |
| US6590203B2 (en) | 1999-12-02 | 2003-07-08 | Hitachi, Ltd. | Ion trap mass spectroscopy |
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