GB671823A - Improvements in and relating to punched magnetic core laminations for electric induction apparatus such as transformers - Google Patents

Improvements in and relating to punched magnetic core laminations for electric induction apparatus such as transformers

Info

Publication number
GB671823A
GB671823A GB3007/49A GB300749A GB671823A GB 671823 A GB671823 A GB 671823A GB 3007/49 A GB3007/49 A GB 3007/49A GB 300749 A GB300749 A GB 300749A GB 671823 A GB671823 A GB 671823A
Authority
GB
United Kingdom
Prior art keywords
transformers
relating
magnetic core
induction apparatus
electric induction
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
GB3007/49A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB671823A publication Critical patent/GB671823A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)

Abstract

671,823. Transformers and inductances. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 3, 1949 [Feb. 6, 1948], No. 3007/49. Class 38 (ii). In order to obtain maximum utilization of the sheet strip in forming an air gapped core of E and I laminations the three legs 7, 8 of the E portion 2 are made of equal length and the I portion 9, obtained when punching a pair of E portions, is provided at opposite ends on at least one side thereof short integral extensions 10 of projection corresponding to the air gap 12 required, and which extensions are arranged to abut the ends of the outer legs 7 and thereby form air gap 12 between the end of the middle leg 8 and the middle portion of the I lamination 9. The outer corners of the middle leg may be bevelled when punching to facilitate coil assembly and the portion removed may form a notch 11 on the I lamination. A double reactor may be made from two E portions separated by an I portion having the integral extensions on both sides thereof (Figs. 3 and 4, not shown). By making the extension on one side different from that on the other two air gaps of different widths may be obtained by inverting the I portion. Figs. 5-7 (not shown).
GB3007/49A 1948-02-06 1949-02-03 Improvements in and relating to punched magnetic core laminations for electric induction apparatus such as transformers Expired GB671823A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US671823XA 1948-02-06 1948-02-06

Publications (1)

Publication Number Publication Date
GB671823A true GB671823A (en) 1952-05-14

Family

ID=22074251

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3007/49A Expired GB671823A (en) 1948-02-06 1949-02-03 Improvements in and relating to punched magnetic core laminations for electric induction apparatus such as transformers

Country Status (1)

Country Link
GB (1) GB671823A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2907966A (en) * 1955-05-24 1959-10-06 Gen Electric Core member for inductive device
US2934727A (en) * 1955-12-29 1960-04-26 Westinghouse Electric Corp Core construction
DE1167438B (en) * 1959-10-08 1964-04-09 Gen Electric Ballast transformer for gas discharge lamps
FR2370346A1 (en) * 1976-11-08 1978-06-02 Bertos Ag AUXILIARY OR SIMILAR APPARATUS WITH CORE SHEETS IN E AND I.
EP0024319A1 (en) * 1979-08-21 1981-03-04 Schwabe GmbH & Co. KG Elektrotechnische Fabrik Process for making E-shaped core laminations and I-shaped yoke laminations for a choke or transformer, particularly for gas discharge lamps
EP1056101A2 (en) * 1999-05-27 2000-11-29 Samsung Electronics Co., Ltd. High-voltage transformer with cooling ribs
DE102004053547A1 (en) * 2004-11-05 2006-05-11 Era Ag Sheet metal cut for a layered core of a transformer
CN108430774A (en) * 2015-12-22 2018-08-21 株式会社Posco大宇 Bonded type laminated cores manufacturing device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2907966A (en) * 1955-05-24 1959-10-06 Gen Electric Core member for inductive device
US2934727A (en) * 1955-12-29 1960-04-26 Westinghouse Electric Corp Core construction
DE1167438B (en) * 1959-10-08 1964-04-09 Gen Electric Ballast transformer for gas discharge lamps
FR2370346A1 (en) * 1976-11-08 1978-06-02 Bertos Ag AUXILIARY OR SIMILAR APPARATUS WITH CORE SHEETS IN E AND I.
EP0024319A1 (en) * 1979-08-21 1981-03-04 Schwabe GmbH & Co. KG Elektrotechnische Fabrik Process for making E-shaped core laminations and I-shaped yoke laminations for a choke or transformer, particularly for gas discharge lamps
EP1056101A2 (en) * 1999-05-27 2000-11-29 Samsung Electronics Co., Ltd. High-voltage transformer with cooling ribs
EP1056101A3 (en) * 1999-05-27 2001-09-26 Samsung Electronics Co., Ltd. High-voltage transformer with cooling ribs
DE102004053547A1 (en) * 2004-11-05 2006-05-11 Era Ag Sheet metal cut for a layered core of a transformer
DE102004053547B4 (en) * 2004-11-05 2009-04-16 Team Magnetics Gmbh Sheet metal cut for a layered core of a transformer
CN108430774A (en) * 2015-12-22 2018-08-21 株式会社Posco大宇 Bonded type laminated cores manufacturing device

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