GB914857A - A magnetic core for inductive devices - Google Patents

A magnetic core for inductive devices

Info

Publication number
GB914857A
GB914857A GB2956/60A GB295660A GB914857A GB 914857 A GB914857 A GB 914857A GB 2956/60 A GB2956/60 A GB 2956/60A GB 295660 A GB295660 A GB 295660A GB 914857 A GB914857 A GB 914857A
Authority
GB
United Kingdom
Prior art keywords
laminations
jan
transformer
air gaps
centre
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
Application number
GB2956/60A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB914857A publication Critical patent/GB914857A/en
Expired 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49075—Electromagnet, transformer or inductor including permanent magnet or core
    • Y10T29/49078—Laminated

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Transformer Cooling (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

914,857. Transformers. GENERAL ELECTRIC CO. Jan. 27, 1960 [Jan. 28, 1959], No. 2956/60. Class 38 (2). The three - limbed core of a transformer or choke is formed of E and I laminations, each E lamination having one leg 14 or 15 (Fig. 2) narrower and longer than the other two, the E laminations being secured single or in packets 2 (Fig. 1) reverselyarranged so that cooling flutes 2<SP>1</SP> project from the core. Some or all of the I laminations may be offset at the centre to provide air gaps 22 and partial air gaps 5 may be formed differentially in the E laminations to constitute continuous windows in the built-up centre leg. The transformer may be potted in asphalt and silica and enclosed in a casing (Fig. 4, not shown). The laminations are clamped together by bolts 3 and angle members 4 and a rectangular stack of laminations may be arranged between the windings to form a magnetic shunt. The E laminations are cut without appreciable waste by arranging for the material forming the wide legs of one to constitute the space between the legs of another, as shown in Fig. 5.
GB2956/60A 1959-01-28 1960-01-27 A magnetic core for inductive devices Expired GB914857A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US789548A US3077570A (en) 1959-01-28 1959-01-28 Inductive device

Publications (1)

Publication Number Publication Date
GB914857A true GB914857A (en) 1963-01-09

Family

ID=25147946

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2956/60A Expired GB914857A (en) 1959-01-28 1960-01-27 A magnetic core for inductive devices

Country Status (3)

Country Link
US (1) US3077570A (en)
FR (1) FR1247069A (en)
GB (1) GB914857A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2334824A (en) * 1998-02-28 1999-09-01 Samsung Electronics Co Ltd Transformer core cooling arrangement
US6144282A (en) * 1999-05-27 2000-11-07 Lee; Chea-How High voltage transformer and method of making a high voltage transformer having radiating ribs

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3201733A (en) * 1960-11-14 1965-08-17 Westinghouse Electric Corp Magnetic core structures
US3173113A (en) * 1960-12-07 1965-03-09 Westinghouse Electric Corp Magnetic core structure
US3763342A (en) * 1971-08-06 1973-10-02 Thermatool Corp Air cooled magnetic structure for use in high frequency welding and heating
DE2650929C2 (en) * 1976-11-08 1983-10-13 Bertos AG, Glarus Ballast
DE2652171A1 (en) * 1976-11-16 1978-05-24 Bertos Ag CONTROL UNIT ETC. WITH E- AND I-SHAPED CORE PLATES
US4447795A (en) * 1981-05-05 1984-05-08 The United States Of America As Represented By The United States Department Of Energy Laminated grid and web magnetic cores
US4740731A (en) * 1986-11-26 1988-04-26 Advance Transformer Company Two capacitor apparatus for sequential starting and operation of multiple series connected discharge lamps
JPH10163022A (en) * 1996-12-03 1998-06-19 Minebea Co Ltd Laminate assembly having expanded radiation area
DE19920268C1 (en) * 1999-05-03 2000-10-19 Aloys Wobben Inductive device e.g. choke coil or transformer, has laminations of magnetic circuit offset relative to one another in vicinity of electrical circuit for increasing magnetic circuit surface

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1623345A (en) * 1927-04-05 Electrical apparatus and core therefor
US2137433A (en) * 1934-02-06 1938-11-22 Wirz Emil Control device for electric transformers
US2330824A (en) * 1941-01-28 1943-10-05 Gen Electric Method of making magnetic cores
US2451202A (en) * 1945-02-21 1948-10-12 Acme Electric Corp Laminated magnetic core and method of making
US2947957A (en) * 1957-04-22 1960-08-02 Zenith Radio Corp Transformers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2334824A (en) * 1998-02-28 1999-09-01 Samsung Electronics Co Ltd Transformer core cooling arrangement
GB2334824B (en) * 1998-02-28 2000-09-20 Samsung Electronics Co Ltd High-voltage transformer
US6144282A (en) * 1999-05-27 2000-11-07 Lee; Chea-How High voltage transformer and method of making a high voltage transformer having radiating ribs

Also Published As

Publication number Publication date
FR1247069A (en) 1960-11-25
US3077570A (en) 1963-02-12

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