JPS59139613A - Magnetic core for choke - Google Patents

Magnetic core for choke

Info

Publication number
JPS59139613A
JPS59139613A JP1223383A JP1223383A JPS59139613A JP S59139613 A JPS59139613 A JP S59139613A JP 1223383 A JP1223383 A JP 1223383A JP 1223383 A JP1223383 A JP 1223383A JP S59139613 A JPS59139613 A JP S59139613A
Authority
JP
Japan
Prior art keywords
choke
magnetic
core
soft magnetic
magnetic 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.)
Pending
Application number
JP1223383A
Other languages
Japanese (ja)
Inventor
Katsuto Yoshizawa
克仁 吉沢
Kiyotaka Yamauchi
山内　清隆
Ryoichi Shibata
良一 柴田
Ryozo Sawada
沢田　良三
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.)
Proterial Ltd
Original Assignee
Hitachi Metals Ltd
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 Hitachi Metals Ltd filed Critical Hitachi Metals Ltd
Priority to JP1223383A priority Critical patent/JPS59139613A/en
Publication of JPS59139613A publication Critical patent/JPS59139613A/en
Pending legal-status Critical Current

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Soft Magnetic Materials (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

PURPOSE:To obtain a high inductance L with a small number of windings and reduce the size by using a material having a higher magnetic flux density as compared with that of ferrite such as permalloy, amorphous material of Si-steel, etc. as a soft magnetic material. CONSTITUTION:Permanent magnets or electromagnets are combined so that anisotropy is given in the direction different from the magnetizing direction with a part or entire part of a closed magnetic loop or open magnetic loop formed by an integrated type of soft magnetic material or those formed by combining soft magnetic materials used as the choke. For example, a choke core is formed by attaching an Sm-Co system permanent magnet to the amorphous ring-shaped magnetic core of 35phiX25phiX10h and a DC B-H characteristic is measured. This choke has showed uniform constant permeability characteristic up to the magnetic field region as high as several thousands Oe and proved that it is excellent as the choke.

Description

【発明の詳細な説明】 本発明はチョーク用磁心に関するものであり、従来ギャ
ップをっＣｊたソフトフェライトコア等が用いれていた
が、フエライ１〜ではＢｓ＝５ＫＧと低いｌζめにチョ
ーク自体が大型になってしまうという欠点があった。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic core for a choke, and conventionally a soft ferrite core with a gap was used, but in Ferrai 1~ the choke itself is large due to the low lζ with Bs = 5KG. It had the disadvantage of becoming

本発明ぼフェライトに比べ磁束密度の高いパーマロイ、
アモルファス材料、　３ｉ−３ｔｅｅ１等を用いること
により、より小型のチョーク用磁心を提供する゛もので
ある。すなわち、本発明は第１図に示す如く、アモルフ
ァス材料又はパーマロイなどの環状磁心などにそのチョ
ークとしての磁化方向とは異なる方向に電磁石又は永久
磁石を用いて強く磁化させることにより多量の直流重畳
状態でも高い透磁率を持つように構成したもので、透磁
率が高い、飽和磁束密度が高いことにより小−巻線数で
高しが得られかつ小型とする口とが出来る。The present invention features permalloy, which has a higher magnetic flux density than ferrite.
By using an amorphous material such as 3i-3tee1, a smaller magnetic core for a choke can be provided. That is, as shown in FIG. 1, the present invention creates a large amount of DC superposition by strongly magnetizing an annular magnetic core made of amorphous material or permalloy in a direction different from the direction of magnetization as a choke using an electromagnet or a permanent magnet. However, it is constructed to have high magnetic permeability, and due to the high magnetic permeability and high saturation magnetic flux density, height can be obtained with a small number of windings and it can be made compact.

以下本発明を実施例に基づいて説明する。The present invention will be explained below based on examples.

実施例１ 第１図（ｂ）の如く、３５φ×２５φｘ１０ｂのアモル
ファス環状磁心にＳｍ−Ｃｏ系永久磁石をとりつけてチ
ョークコアを作成し、直流Ｂ　−１−１特性を測定した
ところ数千エルステッドの高い磁場領域まで均一な恒透
磁率特性を呈し、チョークとして著しく優れていること
が奢認できた。Example 1 As shown in Fig. 1(b), a choke core was made by attaching an Sm-Co permanent magnet to an amorphous annular magnetic core of 35φ x 25φ x 10b, and the direct current B -1-1 characteristic was measured. It was confirmed that it exhibits uniform constant magnetic permeability characteristics even in high magnetic field regions, and is extremely excellent as a choke.

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

第１図（ａ）（ｂ）（ｃ）は本発明の実施例と示すもの
である。 １：軟磁性材コア　２：電磁石　３：永久磁石４：ギ１
１ツブ （ａ） ／。 （Ｃ＞ （ｂ）FIGS. 1(a), 1(b), and 1(c) show examples of the present invention. 1: Soft magnetic material core 2: Electromagnet 3: Permanent magnet 4: Gear 1
1 tube (a) /. (C> (b)

Claims (1)

【特許請求の範囲】 １、軟磁性材料を用いた一体型のもので構成された閉磁
路あるいは開磁路あるいは軟磁性材料を組合せて構成さ
れる開磁路あるいは開磁路の一部分又は仝面チョークと
して磁化される磁化方向とは異なる方向に異方性がつく
よう永久磁石又は電磁石を組合せたことを特徴とするチ
ョーク用磁心。 ２、特許請求の範囲第１項において、用いる軟磁性材料
どして特にアモルファス材料を用いたことを特徴とする
チョーク用磁心。 ３、特許請求の範囲第１　ＪＪｉｉにおいて特に永久磁
石としてＣｏ入り高性能磁石を用いたことを！ｌｖ徴と
するチョーク用磁心。[Scope of Claims] 1. A closed magnetic circuit or an open magnetic circuit constructed of an integrated type using soft magnetic materials, or an open magnetic circuit or a part or surface of an open magnetic circuit constructed of a combination of soft magnetic materials. A magnetic core for a choke, characterized in that a permanent magnet or an electromagnet is combined so as to have anisotropy in a direction different from the magnetization direction in which the choke is magnetized. 2. A magnetic core for a choke according to claim 1, characterized in that the soft magnetic material used is particularly an amorphous material. 3. Claim No. 1 JJii specifically uses a Co-containing high-performance magnet as a permanent magnet! Magnetic core for choke with lv characteristic.
JP1223383A 1983-01-29 1983-01-29 Magnetic core for choke Pending JPS59139613A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1223383A JPS59139613A (en) 1983-01-29 1983-01-29 Magnetic core for choke

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1223383A JPS59139613A (en) 1983-01-29 1983-01-29 Magnetic core for choke

Publications (1)

Publication Number Publication Date
JPS59139613A true JPS59139613A (en) 1984-08-10

Family

ID=11799648

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1223383A Pending JPS59139613A (en) 1983-01-29 1983-01-29 Magnetic core for choke

Country Status (1)

Country Link
JP (1) JPS59139613A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0744757A1 (en) * 1994-12-09 1996-11-27 Kabushiki Kaisha Yaskawa Denki D.c. reactor
JP2002313647A (en) * 2001-04-19 2002-10-25 Nec Tokin Corp Inductor component

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0744757A1 (en) * 1994-12-09 1996-11-27 Kabushiki Kaisha Yaskawa Denki D.c. reactor
EP0744757A4 (en) * 1994-12-09 1998-11-11 Yaskawa Denki Seisakusho Kk D.c. reactor
JP2002313647A (en) * 2001-04-19 2002-10-25 Nec Tokin Corp Inductor component

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