JPH03151606A - Inductor element - Google Patents

Inductor element

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Publication number
JPH03151606A
JPH03151606A JP29055189A JP29055189A JPH03151606A JP H03151606 A JPH03151606 A JP H03151606A JP 29055189 A JP29055189 A JP 29055189A JP 29055189 A JP29055189 A JP 29055189A JP H03151606 A JPH03151606 A JP H03151606A
Authority
JP
Japan
Prior art keywords
noise
magnetic
magnetic material
molding
inductor element
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
Application number
JP29055189A
Other languages
Japanese (ja)
Inventor
Hiroyuki Sawamura
沢村 広之
Akira Naito
内藤 昭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP29055189A priority Critical patent/JPH03151606A/en
Publication of JPH03151606A publication Critical patent/JPH03151606A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To deal with the frequency band of generated noise, reduce the influence on a necessary signal by using an oxide superconducting wire as a lead wire penetrating a magnetic material bead, and absorb the noise, by molding plurality kinds of magnetic material beads by using molding material wherein magnetic powder is mixed in resin. CONSTITUTION:Plural kinds of magnetic material beads A1-An are provided which are constituted of magnetic materials 1a-1n equipped with penetrating holes 4a-4n and lead wires 2a-2n constituted of oxide superconducting wires stretching on both ends of the magnetic material 1a-1n inserted into the penetrating holes 4a-4n. An inductor element B is formed by molding the magnetic material beads A1-An by using molding material 3 wherein magnetic powder is mixed in resin. By using the plurality kinds of magnetic material beads A1-An in the element requiring necessary frequency and attenuation characteristic, generated high frequency noise is absorbed. The lead wires 2a-2n composed of oxide superconductor have small specific resistance, and absorb small capacity noise. Thereby influence on a necessary signal is reduced, and noise absorption is enabled.

Description

【発明の詳細な説明】 (産業上の利用分野) この発明はインダクタ素子、特にノイズ吸収用インダク
タ素子に関するものである。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an inductor element, particularly to a noise absorbing inductor element.

〔従来の技術〕[Conventional technology]

図面第4図は従来例のノイズ吸収用インダクタ素子を示
す斜視図であり、例えばプリント配線基板上に実装され
た電子回路上のノイズを吸収するインダクタ素子として
使用されていた。
FIG. 4 is a perspective view showing a conventional noise absorbing inductor element, which is used, for example, as an inductor element for absorbing noise on an electronic circuit mounted on a printed wiring board.

図面第4図において、10はフェライト焼結体で、中心
に貫通穴10aが設けられている。20はこのフェライ
ト焼結体の貫通穴10aを通して設けられたリード線で
ある。
In FIG. 4, 10 is a ferrite sintered body, and a through hole 10a is provided in the center. 20 is a lead wire provided through the through hole 10a of this ferrite sintered body.

次にこの従来例の動作を簡単に説明する。Next, the operation of this conventional example will be briefly explained.

従来は、例えば前記第4図に示したインダクタ素子を電
子回路(図示せず)上のノイズの発生個所、例えばプリ
ント配線板(図示せず)等の回路パターン(図示せず)
上でノイズが発生し、そのノイズを吸収することが必要
な箇所に実装することにより、前記ノイズを吸収してい
た。
Conventionally, for example, the inductor element shown in FIG.
Noise is generated on the device, and the noise is absorbed by mounting the device at a location where it is necessary to absorb the noise.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

以上のように、従来例においては、インダクタ素子はフ
ェライト焼結体を用いているため、吸収できるノイズの
周波数帯域が限られ、帯域を広げるためにはフェライト
の成分を調節し種々のフェライト組成より成る複数のイ
ンダクタンス素子を用いる必要があった。さらにインダ
クタンス素子が複数になれば、当然リード線も増加し、
該リード線の固有抵抗が無視できず、微少電圧信号にさ
らに高周波ノイズが加わった場合、前記のように複数の
インダクタンス素子を用いると、前記ノイズと本来の信
号の区別がむずかしくなるという問題点があった。
As described above, in conventional inductor elements, the frequency band of noise that can be absorbed is limited because the inductor element uses a sintered ferrite body. It was necessary to use a plurality of inductance elements. Furthermore, if there are multiple inductance elements, the number of lead wires will also increase,
If the specific resistance of the lead wire cannot be ignored and high-frequency noise is added to the minute voltage signal, using multiple inductance elements as described above poses the problem that it becomes difficult to distinguish between the noise and the original signal. there were.

この発明は、上記のような問題点を解消するためになさ
れたもので、複数の種類の磁性体ビードを磁性粉体が樹
脂に混入されたモールド材でモールドし、発生するノイ
ズの周波数帯に合わせて対応でき、さらに、磁性体ビー
ドな貫通するリード線として酸化物超電導線を用い、必
要な信号への影響を少なくしてノイズ吸収を可能とする
ことを目的とする。
This invention was made in order to solve the above-mentioned problems.It molds multiple types of magnetic beads with a molding material in which magnetic powder is mixed with resin. In addition, the purpose is to use an oxide superconducting wire as a lead wire passing through a magnetic bead, thereby reducing the influence on necessary signals and making it possible to absorb noise.

〔課題を解決するための手段) このため、この発明においては、貫通穴を設けた磁性体
と、前記貫通穴に、貫通させ、前記磁性体の両端に伸長
した酸化物超電導線からなるリード線と、で構成された
複数種類の磁性体ビードを有し、かつ前記磁性体ビード
を磁性粉体が樹脂に混入されたモルード材でモールドし
て成るインダクタ素子により前記目的を達成しようとす
るものである。
[Means for Solving the Problems] Therefore, in the present invention, a lead wire consisting of a magnetic body provided with a through hole and an oxide superconducting wire passed through the through hole and extending to both ends of the magnetic body is provided. The above object is achieved by an inductor element having plural types of magnetic beads consisting of the following, and molding the magnetic beads with a molding material in which magnetic powder is mixed in resin. be.

〔作用〕[Effect]

この発明におけるインダクタ素子は、貫通穴を設けた磁
性体と、前記貫通穴に貫通させ、前記磁性体の両端に伸
長した酸化物超電導体からなるリード線とで構成されて
いる複数種類の磁性体ビードにより、各磁性体ビードの
ノイズに対する周波数、減衰特性が異なるので、必要な
周波数。
The inductor element according to the present invention includes a plurality of types of magnetic materials that are made up of a magnetic material provided with a through hole, and lead wires made of an oxide superconductor that extend through the through hole and extend to both ends of the magnetic material. The frequency and attenuation characteristics of each magnetic bead against noise differ depending on the bead, so the required frequency.

減衰特性を要するものに用いて、発生する高周波ノイズ
を吸収する。
Used in applications that require attenuation characteristics to absorb generated high-frequency noise.

また、酸化物超電導体から成るリード線は固有抵抗弁が
少なく、小さな容量のノイズも吸収する。
Additionally, lead wires made of oxide superconductors have fewer resistive valves and absorb small capacitance noise.

また、前記磁性体ビードを磁性粉体を樹脂に混入したモ
ールド材でモールドしているので、モールド材の磁性粉
体のノイズに対する周波数、減衰特性を調節して、より
一段と広周波域のノイズを吸収する。
In addition, since the magnetic beads are molded with a molding material containing magnetic powder mixed in resin, the frequency and damping characteristics of the magnetic powder in the molding material against noise can be adjusted to further suppress noise in a wide frequency range. Absorb.

(実施例) 以下この発明の一実施例を図面に基づいて説明する。(Example) An embodiment of the present invention will be described below based on the drawings.

図面第1図はこの発明の一実施例であるインダクタ素子
の透視斜視図、第セ図は第1図のインダクタ素子をso
p形とした斜視図、第3図は第1図のインダクタ素子を
DIL形とした斜視図である。
Figure 1 is a perspective view of an inductor element according to an embodiment of the present invention, and Figure 1 is a perspective view of the inductor element shown in Figure 1.
FIG. 3 is a perspective view of the inductor element of FIG. 1 as a DIL type.

図面第1図において、旦は複数種類の磁性体ビードA、
、A2−−−−−−A、(後述)とこの磁性体ビードを
モールド材3(後述)でモールドして成るインダクタ素
子、1 a、  1 b・・・−1nはギれぞれフェラ
イト等を焼成した磁性体であり、円筒形をなし、中心に
それぞれ貫通穴4a、4b・・・・・・4nを設けであ
る。2a、2b−−−−−−2nはこの磁性体のそれぞ
れを貫通し・両端に伸長したリード線であり、酸化物超
電導物質、例えば組成比がY B −2,Cu3になる
ようにした原料からなる線材が用いられている。A、、
A2−−−−−−Anはそれぞれ複数種類(後述)の磁
性体1 a、  1 b−−−−−−1nノソれぞれと
、リード線2a、2b・・・・・・2nのそれぞれから
構成されたそれぞれ特性(後述)の異なる磁性体ビード
、3は前記n個の磁性体ビードおよびそのリード線をモ
ールドするモールド材であり、フェライト等の磁性粉体
を混入した樹脂コンパウンドが使用されている。なお、
上記フェライ□ド等の磁性体1a、1 b・−・・・・
1 nのそれぞれを用いた磁性体ビードAl 、 A2
−−−−−−A、l、のそれぞれは、その磁性体の1 
a、  1 b・−−−−−1nのそれぞれの成分を調
節し、′複数種類の異なる周波数、減衰特性にされてい
る。
In Figure 1 of the drawing, there are multiple types of magnetic beads A,
, A2------A (described later) and an inductor element formed by molding this magnetic bead with a molding material 3 (described later), 1a, 1b...-1n are each made of ferrite, etc. It is a magnetic material made by firing, and has a cylindrical shape, with through holes 4a, 4b, . . . , 4n provided in the center, respectively. 2a, 2b----2n are lead wires that penetrate each of these magnetic bodies and extend to both ends, and are made of oxide superconducting material, for example, a raw material whose composition ratio is YB-2, Cu3. A wire rod consisting of is used. A...
A2-------An are each of multiple types (described later) of magnetic bodies 1a, 1b----1n, and lead wires 2a, 2b...2n, respectively. 3 is a molding material for molding the n magnetic beads and their lead wires, and a resin compound mixed with magnetic powder such as ferrite is used. ing. In addition,
Magnetic materials 1a, 1b such as the above ferride □...
Magnetic beads Al and A2 using each of 1n
------Each of A and l is 1 of the magnetic material.
By adjusting the respective components of a, 1b, -----1n, a plurality of different frequencies and attenuation characteristics are obtained.

また、図面第2図および第3図は第1図のインダクタ素
子の外観を例示しており、図・面第2図は面実装用S 
OP (Small 0utline Package
)形、第3図はD I L (Dual ’In Li
ne)形のようにモールド材3を変えて成形することが
できる。
In addition, Figures 2 and 3 illustrate the appearance of the inductor element in Figure 1, and Figure 2 shows the surface mounting S.
OP (Small 0utline Package
) shape, Figure 3 is D I L (Dual 'In Li
ne) It is possible to mold by changing the molding material 3 like the shape.

次にこの実施例の動作を第1図を用いて説明する。Next, the operation of this embodiment will be explained using FIG.

図面□第1図において、各磁性体ビ、・−ドA1゜A2
−−−−−−A、のそれぞれはノイズに対する周波数、
減衰特性が異なるので、必要とするノイズに対する周波
数、減衰特性を有するものを配線することにより発生す
る高周波ノイズを充分吸収することができる。
Drawing □ In Figure 1, each magnetic material B, - A1゜A2
−−−−−−A, each is the frequency for noise,
Since the attenuation characteristics are different, high-frequency noise generated can be sufficiently absorbed by wiring wires that have the required frequency and attenuation characteristics for the noise.

また、この場合リード線は酸化物超電導体を用いている
ので、固有抵抗分が少なく、小さな容量のノイズも吸収
することができる。
Further, in this case, since the lead wire is made of an oxide superconductor, it has a small specific resistance and can absorb small capacitance noise.

すなわち、約−70℃以上常温の温度範囲において、リ
ード線2a、2b・・・・・・2nの電気抵抗がほとん
ど0(ゼロ)になるので、電気信号はそのまま磁性体ビ
ートA、、A2・・・・・・Anのそれぞれ内をリード
線による損失なしで通過するため、高周波ノイズのみが
磁性体ビードA、、A2・・・・・・Aoのそれぞれに
より吸収され、また、広帯域のノイズに対応するため前
記のように多数の種類の配合による磁性体ビードを使用
し、本来の信号への影響を少なくし、より完全にノイズ
を吸収することが可能となる。
In other words, in the temperature range of approximately -70°C or higher and room temperature, the electrical resistance of the lead wires 2a, 2b, .・・・・・・Since it passes through each of An without loss due to the lead wire, only high frequency noise is absorbed by each of magnetic beads A, , A2 ・・・・・・Ao, and wide band noise In order to cope with this problem, magnetic beads with a large number of different combinations are used as described above, thereby making it possible to reduce the influence on the original signal and absorb noise more completely.

さらに、モールド材3の磁性粉体のノイズに対する周波
数、減衰特性を調節することにより、より一段と広周波
域のノイズを吸収することができる。
Further, by adjusting the noise frequency and damping characteristics of the magnetic powder of the molding material 3, it is possible to absorb noise in an even wider frequency range.

〔発明の効果〕〔Effect of the invention〕

以上のようにこの発明によれば、複数の種類の磁性体ビ
ードを磁性粉体か樹脂に混入されたモールド材でモール
ドし、発生するノイズの周波数帯に合わせて対応でき、
さらに、磁性体ビードを貫通するリード線として酸化物
超電導線を用いて、必要な信号への影響を少なくし、ノ
イズ吸収が可能となるインダクタ素子が得られる効果が
ある。
As described above, according to the present invention, a plurality of types of magnetic beads are molded with magnetic powder or a molding material mixed with resin, and it is possible to respond to the frequency band of the generated noise.
Furthermore, by using an oxide superconducting wire as a lead wire that penetrates the magnetic bead, there is an effect that an inductor element that can reduce the influence on necessary signals and can absorb noise can be obtained.

【図面の簡単な説明】[Brief explanation of the drawing]

図面第1図はこの発明の一実施例であるインダクタ素子
の透視斜視図、第2図は第1図のインダクタ素子をSO
2形とした斜視図、第3図は第1図のインダクタ素子を
DIL形とした斜視図、第4図は従来例のノイズ吸収用
インダクタ素子を示す斜視図である。 B・・・・・・インダクタ素子 AI、A2−・・・・・An・・・・・・磁性体ビード
la、lb・・・・・・1o・・・・・・磁性体2 a
 、  2 b ”−−−・2 、−−−−”リード線
3・・・・・・モールド材 4 a 、 4 b ・・・・・・4 n ・・・・・
・貫通穴なお、図中、同一符号は同−又は相当部分を示
す。
Figure 1 is a perspective view of an inductor element according to an embodiment of the present invention, and Figure 2 is a perspective view of the inductor element shown in Figure 1.
FIG. 3 is a perspective view of the inductor element shown in FIG. 1 as a DIL type, and FIG. 4 is a perspective view showing a conventional noise absorbing inductor element. B...Inductor element AI, A2-...An...Magnetic material bead la, lb...1o...Magnetic material 2 a
, 2 b "----・2 , ----" Lead wire 3...Mold material 4 a, 4 b...4 n...
・Through hole In the drawings, the same reference numerals indicate the same or equivalent parts.

Claims (1)

【特許請求の範囲】[Claims]  貫通穴を設けた磁性体と、前記貫通穴に貫通させ、前
記磁性体の両端に伸長した酸化物超電導線からなるリー
ド線と、で構成された複数種類の磁性体ビードを有し、
かつ前記磁性体ビードを磁性粉体が樹脂に混入されたモ
ールド材でモールドして成ることを特徴とするインダク
タ素子。
It has a plurality of types of magnetic beads made up of a magnetic body provided with a through hole, and a lead wire made of an oxide superconducting wire that is passed through the through hole and extended to both ends of the magnetic body,
An inductor element characterized in that the magnetic beads are molded with a molding material in which magnetic powder is mixed into resin.
JP29055189A 1989-11-08 1989-11-08 Inductor element Pending JPH03151606A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29055189A JPH03151606A (en) 1989-11-08 1989-11-08 Inductor element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29055189A JPH03151606A (en) 1989-11-08 1989-11-08 Inductor element

Publications (1)

Publication Number Publication Date
JPH03151606A true JPH03151606A (en) 1991-06-27

Family

ID=17757497

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29055189A Pending JPH03151606A (en) 1989-11-08 1989-11-08 Inductor element

Country Status (1)

Country Link
JP (1) JPH03151606A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0808506A1 (en) * 1995-02-06 1997-11-26 American Superconductor Corporation Improved superconducting inductors

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0808506A1 (en) * 1995-02-06 1997-11-26 American Superconductor Corporation Improved superconducting inductors
EP0808506A4 (en) * 1995-02-06 1999-02-03 American Superconductor Corp Improved superconducting inductors

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