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EP0378823A3 - Use of a magnet core in an interface transformer - Google Patents

Use of a magnet core in an interface transformer Download PDF

Info

Publication number
EP0378823A3
EP0378823A3 EP19890123354 EP89123354A EP0378823A3 EP 0378823 A3 EP0378823 A3 EP 0378823A3 EP 19890123354 EP19890123354 EP 19890123354 EP 89123354 A EP89123354 A EP 89123354A EP 0378823 A3 EP0378823 A3 EP 0378823A3
Authority
EP
European Patent Office
Prior art keywords
atom
transformers
isdn
interface
terminals
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.)
Granted
Application number
EP19890123354
Other languages
German (de)
French (fr)
Other versions
EP0378823A2 (en
EP0378823B1 (en
Inventor
Johannes Binkofski
Dietmar Grätzer
Giselher Dr. Herzer
Hans-Reiner Dr. Hilzinger
Jörg Dr. Petzold
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.)
Vacuumschmelze GmbH and Co KG
Original Assignee
Vacuumschmelze GmbH and Co KG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6372069&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0378823(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Vacuumschmelze GmbH and Co KG filed Critical Vacuumschmelze GmbH and Co KG
Publication of EP0378823A2 publication Critical patent/EP0378823A2/en
Publication of EP0378823A3 publication Critical patent/EP0378823A3/en
Application granted granted Critical
Publication of EP0378823B1 publication Critical patent/EP0378823B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/147—Alloys characterised by their composition
    • H01F1/153—Amorphous metallic alloys, e.g. glassy metals
    • H01F1/15316—Amorphous metallic alloys, e.g. glassy metals based on Co

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Soft Magnetic Materials (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

Im neuen digitalen Kommunikationssystem ISDN erfolgt die Übertragung zwischen dem Netzabschluß (2) und den Endgeräten (3) über die sogenannte S₀ - Schnittstelle durch Schnittstellenübertrager (6, 11). Da die Stromversorgung der Endgeräte zum Teil ebenfalls über diese Übertrager erfolgt, hat eine Stromunsymmetrie in den Leitungen (7, 8) bzw. (9, 10) eine Vormagnetisierung der Übertrager zur Folge. Die ISDN-Anforderungen an die Übertrager müssen somit auch bei einer Gleichstromvormagnetisierung erfüllt werden. Kompakte Übertrager mit einfachem Wicklungsaufbau, die die ISDN-Anforderungen erfüllen, weisen als Magnetkernmaterial erfindungsgemäß eine amorphe Co-Basislegierung mit einer Permeabilität von mehr als 25 000 und weniger als 95 000 auf. Vorzugsweise enthalten die Magnetkerne neben Co im wesentlichen Fe und Mn mit einem Gesamtgehalt von 3 bis 8 Atom-% sowie Metalloide mit einem Anteil von 24 bis 29 Atom-% und wahlweise bis zu 15 Atom-% Ni sowie bis zu 1 Atom-% Mo, Cr und/oder Ni. In the new digital communication system ISDN, the transmission between the network termination ( 2 ) and the terminals ( 3 ) takes place via the so-called S₀ interface through interface transmitters (6, 11). Since some of the terminals are also supplied with power by these transformers, a current asymmetry in lines (7, 8) or (9, 10) results in the transformers being premagnetized. The ISDN requirements for the transmitters must therefore also be met with DC bias. According to the invention, compact transformers with a simple winding structure that meet the ISDN requirements have an amorphous Co-based alloy with a permeability of more than 25,000 and less than 95,000 as the magnetic core material. In addition to Co, the magnetic cores preferably contain essentially Fe and Mn with a total content of 3 to 8 atom% and metalloids with a proportion of 24 to 29 atom% and optionally up to 15 atom% Ni and up to 1 atom% Mo , Cr and / or Ni.

EP89123354A 1989-01-14 1989-12-18 Use of a magnet core in an interface transformer Expired - Lifetime EP0378823B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3900946A DE3900946A1 (en) 1989-01-14 1989-01-14 MAGNETIC CORE FOR AN INTERFACE TRANSMITTER
DE3900946 1989-01-14

Publications (3)

Publication Number Publication Date
EP0378823A2 EP0378823A2 (en) 1990-07-25
EP0378823A3 true EP0378823A3 (en) 1991-04-03
EP0378823B1 EP0378823B1 (en) 1995-03-15

Family

ID=6372069

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89123354A Expired - Lifetime EP0378823B1 (en) 1989-01-14 1989-12-18 Use of a magnet core in an interface transformer

Country Status (3)

Country Link
EP (1) EP0378823B1 (en)
JP (1) JP3229309B2 (en)
DE (2) DE3900946A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1134949C (en) * 1996-09-17 2004-01-14 真空融化股份有限公司 Pulse transformer for U-shape interfaces operating according to echo compensation principle
DE19948897A1 (en) * 1999-10-11 2001-04-19 Vacuumschmelze Gmbh Interface modules for local data networks
JP7003046B2 (en) * 2016-09-29 2022-01-20 株式会社東芝 core

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0021101A1 (en) * 1979-06-15 1981-01-07 Vacuumschmelze GmbH Amorphous soft magnetic alloy

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5358576A (en) * 1979-06-09 1994-10-25 Matsushita Electric Industrial Co., Ltd. Amorphous materials with improved properties
US4482400A (en) * 1980-03-25 1984-11-13 Allied Corporation Low magnetostriction amorphous metal alloys
EP0084138B1 (en) * 1982-01-18 1987-02-25 Allied Corporation Near-zero magnetostrictive glassy metal alloys with high magnetic and thermal stability
JPS6024338A (en) * 1983-07-19 1985-02-07 Hitachi Metals Ltd Amorphous ferromagnetic alloy
JPS6059708A (en) * 1983-09-13 1985-04-06 Hitachi Metals Ltd Magnetic core
JPS61243152A (en) * 1985-11-29 1986-10-29 Res Inst Iron Steel Tohoku Univ High magnetic premeability amorphous alloy and its production

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0021101A1 (en) * 1979-06-15 1981-01-07 Vacuumschmelze GmbH Amorphous soft magnetic alloy

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 9, no. 193 (E-334)(1916) 09 August 1985, & JP-A-60 59708 (HITACHI KINZOKU K.K) 06 April 1985, *

Also Published As

Publication number Publication date
DE58909115D1 (en) 1995-04-20
EP0378823A2 (en) 1990-07-25
EP0378823B1 (en) 1995-03-15
DE3900946A1 (en) 1990-07-26
JP3229309B2 (en) 2001-11-19
JPH02271504A (en) 1990-11-06

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