FR2367340A1 - IRON CORE FOR A SELF-INDUCING OR A TRANSFORMER AND ITS MANUFACTURING PROCESS - Google Patents

IRON CORE FOR A SELF-INDUCING OR A TRANSFORMER AND ITS MANUFACTURING PROCESS

Info

Publication number
FR2367340A1
FR2367340A1 FR7730456A FR7730456A FR2367340A1 FR 2367340 A1 FR2367340 A1 FR 2367340A1 FR 7730456 A FR7730456 A FR 7730456A FR 7730456 A FR7730456 A FR 7730456A FR 2367340 A1 FR2367340 A1 FR 2367340A1
Authority
FR
France
Prior art keywords
iron core
transformer
inducing
self
manufacturing process
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
FR7730456A
Other languages
French (fr)
Other versions
FR2367340B1 (en
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.)
Helvar Oy AB
Original Assignee
Helvar Oy AB
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 Helvar Oy AB filed Critical Helvar Oy AB
Publication of FR2367340A1 publication Critical patent/FR2367340A1/en
Application granted granted Critical
Publication of FR2367340B1 publication Critical patent/FR2367340B1/fr
Granted 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)
  • Soft Magnetic Materials (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

Le noyau de fer pour bobine ou transformateur comporte selon la présente invention, un empilement de tôles en T 1 et deux empilements de tôles en L 2. Les faces supérieures des branches des L sont biseautées 5 ainsi que les extrémités des branches horizontales des L. L'entrefer est déterminé par une tige passant dans une rainure pratiquée dans la face inférieure de la branche du T. Grâce à l'invention, on minimise les pertes en tôle lors du poinçonnage.According to the present invention, the iron core for a coil or transformer comprises a stack of T-sheets 1 and two stacks of L-sheets 2. The upper faces of the branches of the L are bevelled 5 as well as the ends of the horizontal branches of the L. The air gap is determined by a rod passing through a groove made in the underside of the branch of the T. Thanks to the invention, losses of sheet metal during punching are minimized.

FR7730456A 1976-10-11 1977-10-10 IRON CORE FOR A SELF-INDUCING OR A TRANSFORMER AND ITS MANUFACTURING PROCESS Granted FR2367340A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI762891A FI57192C (en) 1976-10-11 1976-10-11 JAERNKAERNA FOER DROSSELANORDNING ELLER TRANSFORMATOR

Publications (2)

Publication Number Publication Date
FR2367340A1 true FR2367340A1 (en) 1978-05-05
FR2367340B1 FR2367340B1 (en) 1984-02-24

Family

ID=8510328

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7730456A Granted FR2367340A1 (en) 1976-10-11 1977-10-10 IRON CORE FOR A SELF-INDUCING OR A TRANSFORMER AND ITS MANUFACTURING PROCESS

Country Status (8)

Country Link
DE (1) DE2745701C2 (en)
FI (1) FI57192C (en)
FR (1) FR2367340A1 (en)
GB (1) GB1588765A (en)
NO (1) NO148466C (en)
PL (1) PL114511B1 (en)
SE (1) SE421362B (en)
SU (1) SU745390A3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0039485A1 (en) * 1980-05-07 1981-11-11 Licentia Patent-Verwaltungs-GmbH Line transformer for a television receiver
EP0571242A1 (en) * 1992-05-21 1993-11-24 Acec Ballasts Magnetic circuit with airgap, particularly for ballasts for discharge lamps and its manufacturing method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3510854A1 (en) * 1985-03-26 1986-10-02 Schwabe GmbH & Co KG Elektrotechnische Fabrik, 7068 Urbach METHOD FOR THE PRODUCTION OF U-SHAPED CORE SHEETS AND T-SHAPED BACK-SHAPING SHEETS THAT MATCH BETWEEN THE SIDE OF THEM OF A THROTTLE OR A TRANSFORMER, ESPECIALLY FOR GAS DISCHARGE LAMPS

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1783050A (en) * 1930-04-22 1930-11-25 Gen Electric Magnetic core
FR1218773A (en) * 1959-03-11 1960-05-12 Normacem Sa Magnetic circuit for transformer
GB878573A (en) * 1958-09-10 1961-10-04 Gen Electric Co Ltd Improvements in or relating to the production of magnetic core laminations
US3153961A (en) * 1963-06-20 1964-10-27 Advance Transformer Co Method of producing transformer core laminations from strip stock
CH511502A (en) * 1969-12-09 1971-08-15 Zumtobel Walter Transformer or induction coil
FR2070783A1 (en) * 1969-12-09 1971-09-17 Zumtobel Walter
FR2072086A1 (en) * 1969-12-29 1971-09-24 Zumtobel Walter
CH526847A (en) * 1970-08-27 1972-08-15 Licentia Gmbh Series choke for a fluorescent lamp
FR2125402A1 (en) * 1971-02-13 1972-09-29 Siemens Ag
FR2173689A1 (en) * 1972-02-28 1973-10-12 Cetek Const Electrotech
DE7427707U (en) * 1973-08-20 1974-11-28 Zumtobel W Transformer or reactor with an iron body

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE159059C (en) *
GB128118A (en) * 1918-11-13 1919-06-19 Ralph Crosbie-Hill Improvements relating to Electric Transformers.
US3132285A (en) * 1957-03-22 1964-05-05 Jefferson Electric Co Transformer ballast assembly for energizing gas discharge devices
DE1613628A1 (en) * 1967-03-20 1970-07-30 Blum Eisen & Metallind Two-part iron core, especially for transformers
DE2309727C3 (en) * 1973-02-27 1979-05-03 Fa. Hermann Schwabe, 7067 Urbach Process for the production of chokes or transformers to be used in particular as ballasts for gas discharge lamps

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1783050A (en) * 1930-04-22 1930-11-25 Gen Electric Magnetic core
GB878573A (en) * 1958-09-10 1961-10-04 Gen Electric Co Ltd Improvements in or relating to the production of magnetic core laminations
FR1218773A (en) * 1959-03-11 1960-05-12 Normacem Sa Magnetic circuit for transformer
US3153961A (en) * 1963-06-20 1964-10-27 Advance Transformer Co Method of producing transformer core laminations from strip stock
CH511502A (en) * 1969-12-09 1971-08-15 Zumtobel Walter Transformer or induction coil
FR2070783A1 (en) * 1969-12-09 1971-09-17 Zumtobel Walter
FR2072086A1 (en) * 1969-12-29 1971-09-24 Zumtobel Walter
CH526847A (en) * 1970-08-27 1972-08-15 Licentia Gmbh Series choke for a fluorescent lamp
FR2125402A1 (en) * 1971-02-13 1972-09-29 Siemens Ag
FR2173689A1 (en) * 1972-02-28 1973-10-12 Cetek Const Electrotech
DE7427707U (en) * 1973-08-20 1974-11-28 Zumtobel W Transformer or reactor with an iron body

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0039485A1 (en) * 1980-05-07 1981-11-11 Licentia Patent-Verwaltungs-GmbH Line transformer for a television receiver
EP0571242A1 (en) * 1992-05-21 1993-11-24 Acec Ballasts Magnetic circuit with airgap, particularly for ballasts for discharge lamps and its manufacturing method

Also Published As

Publication number Publication date
PL114511B1 (en) 1981-02-28
SU745390A3 (en) 1980-06-30
SE421362B (en) 1981-12-14
FI57192B (en) 1980-02-29
GB1588765A (en) 1981-04-29
NO773445L (en) 1978-04-12
DE2745701A1 (en) 1978-04-13
DE2745701C2 (en) 1986-07-31
NO148466B (en) 1983-07-04
PL201439A1 (en) 1978-04-24
NO148466C (en) 1983-10-12
FI762891A (en) 1978-04-12
FI57192C (en) 1980-06-10
SE7711335L (en) 1978-04-12
FR2367340B1 (en) 1984-02-24

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