GB1466879A - Electromagnetic devices - Google Patents

Electromagnetic devices

Info

Publication number
GB1466879A
GB1466879A GB805674A GB805674A GB1466879A GB 1466879 A GB1466879 A GB 1466879A GB 805674 A GB805674 A GB 805674A GB 805674 A GB805674 A GB 805674A GB 1466879 A GB1466879 A GB 1466879A
Authority
GB
United Kingdom
Prior art keywords
members
inductors
transformers
insulated
given
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
GB805674A
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.)
HIRST H
Original Assignee
HIRST H
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 HIRST H filed Critical HIRST H
Priority to GB805674A priority Critical patent/GB1466879A/en
Priority to FR7505591A priority patent/FR2262384A1/en
Priority to IT2051275A priority patent/IT1037157B/en
Publication of GB1466879A publication Critical patent/GB1466879A/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/14—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias
    • H01F2029/143—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias with control winding for generating magnetic bias

Landscapes

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

Abstract

1466879 Transformers and inductors H HIRST 21 Feb 1974 8056/74 Heading HIT An electromagnetic device comprises a magnetic core made from E and I members 2, 16 of specified proportions as shown in Fig. 1, an outer limb of the E member being longer than the other two limbs by a specified proportional amount. The members 2, 16 are cut from a sheet to leave no waste (Fig. 2, not shown), the spaces 10, 12 of the complete lamination being large enough to accommodate Al conductors instead of Cu conductors for a given kVA rating. The members 2, 16 may be insulated on one or both sides by varnish or oxide coatings. Devices for which the laminations could be used are transformers, inductors, chokes with normal or relatively high reluctance in which latter case the I member is slightly spaced from the E member by plastics insulating material (Fig. 8, not shown) and saturable reactors (Figs. 9 and 10, not shown). Any Al conductor used may be insulated by polyvinyl acetal. Specific sizes and interrelated size ranges are given for the E and I members.
GB805674A 1974-02-21 1974-02-21 Electromagnetic devices Expired GB1466879A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB805674A GB1466879A (en) 1974-02-21 1974-02-21 Electromagnetic devices
FR7505591A FR2262384A1 (en) 1974-02-21 1975-02-21 Electromagnet with laminated sheet core - has I-shaped elements contacting branches of E-shaped laminations
IT2051275A IT1037157B (en) 1974-02-21 1975-02-21 NUCLEAD FOR ELECTROMAGNETIC DEVICES SUCH AS TRANSFORMERS OR SIMILAR

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB805674A GB1466879A (en) 1974-02-21 1974-02-21 Electromagnetic devices

Publications (1)

Publication Number Publication Date
GB1466879A true GB1466879A (en) 1977-03-09

Family

ID=9844950

Family Applications (1)

Application Number Title Priority Date Filing Date
GB805674A Expired GB1466879A (en) 1974-02-21 1974-02-21 Electromagnetic devices

Country Status (1)

Country Link
GB (1) GB1466879A (en)

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19940220