DE59300886D1 - Method for producing a choke or a transformer with E-shaped core sheets formed from two U-shaped sheets. - Google Patents

Method for producing a choke or a transformer with E-shaped core sheets formed from two U-shaped sheets.

Info

Publication number
DE59300886D1
DE59300886D1 DE59300886T DE59300886T DE59300886D1 DE 59300886 D1 DE59300886 D1 DE 59300886D1 DE 59300886 T DE59300886 T DE 59300886T DE 59300886 T DE59300886 T DE 59300886T DE 59300886 D1 DE59300886 D1 DE 59300886D1
Authority
DE
Germany
Prior art keywords
shaped
laminate
core
stack
shaped 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 - Lifetime
Application number
DE59300886T
Other languages
German (de)
Inventor
Jakob Marti-Hefti
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.)
KNOBEL LICHTTECH
Original Assignee
KNOBEL LICHTTECH
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 KNOBEL LICHTTECH filed Critical KNOBEL LICHTTECH
Application granted granted Critical
Publication of DE59300886D1 publication Critical patent/DE59300886D1/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
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means
    • H01F41/0233—Manufacturing of magnetic circuits made from sheets

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Electromagnets (AREA)

Abstract

The laminate stack (1) of a transformer or an inductor is formed by U-shaped core laminates (2, 3) which are arranged located adjacent to one another and are fastened to one another in such a manner that an E-shaped core laminate stack is formed, limbs (14, 15), which are in each case shorter, of each U laminate together forming the centre limb of the E laminate. The core laminate stack is in each case completed by an I-shaped magnetic return path laminate (4). The U-shaped laminates are connected to one another, for example by welding. The composition of the E-shaped core laminate stack from two U-shaped core laminate stacks results in considerably greater freedom in stamping, since, in this case, only U-shaped laminates need to be stamped. This allows the stamping to be carried out such that the U-limbs point in the rolling direction of the core laminate material strip. This results in considerably improved magnetic properties of the core laminate stack. <IMAGE>
DE59300886T 1992-07-20 1993-07-20 Method for producing a choke or a transformer with E-shaped core sheets formed from two U-shaped sheets. Expired - Lifetime DE59300886D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH228492 1992-07-20

Publications (1)

Publication Number Publication Date
DE59300886D1 true DE59300886D1 (en) 1995-12-14

Family

ID=4230175

Family Applications (1)

Application Number Title Priority Date Filing Date
DE59300886T Expired - Lifetime DE59300886D1 (en) 1992-07-20 1993-07-20 Method for producing a choke or a transformer with E-shaped core sheets formed from two U-shaped sheets.

Country Status (4)

Country Link
EP (1) EP0580131B1 (en)
AT (1) ATE130119T1 (en)
DE (1) DE59300886D1 (en)
ES (1) ES2079925T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07297055A (en) * 1994-04-26 1995-11-10 Matsushita Electric Ind Co Ltd Choke coil
US6975049B2 (en) 2003-10-29 2005-12-13 A. O. Smith Corporation Electrical machine and method of manufacturing the same
DE102004012436B4 (en) * 2004-03-12 2006-04-20 Vossloh-Schwabe Deutschland Gmbh Core sheet for inductive component

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT311485B (en) * 1969-12-09 1973-11-26 Zumtobel Walter Transformer or induction coil with iron core
ES398127A1 (en) * 1970-12-28 1974-07-16 Knobel Elektro App Laminated magnetic core for induction devices and laminations for forming such magnetic core
DE2638369A1 (en) * 1976-08-26 1978-03-02 Bernhard Philberth Iron core system for transformers and inductors - has three limbs and two yokes with specified widths related to width of middle limb
GB2048575B (en) * 1979-05-04 1983-01-26 Thorn Electrical Ind Ltd Electrical choke or transformer
DE3402036C1 (en) * 1984-01-21 1985-07-11 Schwabe GmbH & Co KG Elektrotechnische Fabrik, 7067 Urbach Method for producing E-shaped core laminates and I-shaped magnetic return path laminates of an inductor or of a transformer, especially for gas-discharge lamps
DE3727457C2 (en) * 1987-08-18 1997-02-13 Waasner Elektrotechnische Fabr Three-phase transformer

Also Published As

Publication number Publication date
EP0580131A3 (en) 1994-03-23
EP0580131A2 (en) 1994-01-26
ATE130119T1 (en) 1995-11-15
ES2079925T3 (en) 1996-01-16
EP0580131B1 (en) 1995-11-08

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition