GB1015044A - Improvements in or relating to transformers - Google Patents

Improvements in or relating to transformers

Info

Publication number
GB1015044A
GB1015044A GB2083263A GB2083263A GB1015044A GB 1015044 A GB1015044 A GB 1015044A GB 2083263 A GB2083263 A GB 2083263A GB 2083263 A GB2083263 A GB 2083263A GB 1015044 A GB1015044 A GB 1015044A
Authority
GB
United Kingdom
Prior art keywords
laminations
core
transformer
air gaps
bridged
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
GB2083263A
Inventor
Julius Cates
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 PLC
Original Assignee
General Electric Co PLC
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 PLC filed Critical General Electric Co PLC
Priority to GB2083263A priority Critical patent/GB1015044A/en
Publication of GB1015044A publication Critical patent/GB1015044A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/08—High-leakage transformers or inductances
    • H01F38/10—Ballasts, e.g. for discharge lamps
    • 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
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/16—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies
    • H05B41/20—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch
    • H05B41/23—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch for lamps not having an auxiliary starting electrode
    • H05B41/232—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch for lamps not having an auxiliary starting electrode for low-pressure lamps
    • H05B41/2325—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch for lamps not having an auxiliary starting electrode for low-pressure lamps provided with pre-heating electrodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Coils Of Transformers For General Uses (AREA)

Abstract

1,015,044. Transformers. GENERAL ELECTRIC CO. Ltd. May 25, 1964 [May 24, 1963], No. 20832/63. Heading H1T. A stray-field transformer has a core with one or more air gaps between two main stacks of laminations or between two parts of a single main stack, the air gap being bridged on at least one side by a further stack of laminations. The core may be made of U-type laminations having different lengths of arms 3, 4 and 6, 7 (Fig. 1) and cut, without waste, from rectangular sheets. Alternatively two sets of different, but symmetrical, U-shaped laminations may be used (Fig. 4, not shown). The air gaps may be bridged by rectangular strip laminations with their surfaces contacting either the surfaces or the edges of the laminations in the main stacks (Figs. 7 and 8, not shown). The core may be of shell-type with air gaps in all limbs or between the centre limb and a yoke (Figs. 5 and 6, not shown). An adjustable magnetic shunt 9 may be provided between the primary windings P and the secondary windings S (Fig. 9, not shown). Fluorescent lamp circuits incorporating the transformer are described and constructional details of the transformer and circuit elements are given.
GB2083263A 1963-05-24 1963-05-24 Improvements in or relating to transformers Expired GB1015044A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2083263A GB1015044A (en) 1963-05-24 1963-05-24 Improvements in or relating to transformers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2083263A GB1015044A (en) 1963-05-24 1963-05-24 Improvements in or relating to transformers

Publications (1)

Publication Number Publication Date
GB1015044A true GB1015044A (en) 1965-12-31

Family

ID=10152454

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2083263A Expired GB1015044A (en) 1963-05-24 1963-05-24 Improvements in or relating to transformers

Country Status (1)

Country Link
GB (1) GB1015044A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3464041A (en) * 1968-03-06 1969-08-26 Allis Chalmers Mfg Co Electrical transformer having leakage flux shield
GB2183103A (en) * 1985-11-14 1987-05-28 Telcon Metals Ltd Magnetic core
EP0279253A1 (en) * 1987-02-02 1988-08-24 Magnetek May & Christe GmbH Ballast device for gas discharge lamps
GB2407712B (en) * 2003-10-29 2007-07-25 Smith Corp A O Electrical machine and method of manufacturing the same
RU2468489C2 (en) * 2008-10-08 2012-11-27 Анатолий Сергеевич Поляков Manufacturing method of magnetic conductor of electromagnet of armour type of vibrating pump
WO2014035251A1 (en) * 2012-09-03 2014-03-06 Noratel As A power transformer assembly
IT201700094491A1 (en) * 2017-08-18 2019-02-18 General Electric Technology Gmbh Reactor.

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3464041A (en) * 1968-03-06 1969-08-26 Allis Chalmers Mfg Co Electrical transformer having leakage flux shield
GB2183103A (en) * 1985-11-14 1987-05-28 Telcon Metals Ltd Magnetic core
GB2183103B (en) * 1985-11-14 1990-02-28 Telcon Metals Ltd Magnetic core
EP0279253A1 (en) * 1987-02-02 1988-08-24 Magnetek May & Christe GmbH Ballast device for gas discharge lamps
GB2407712B (en) * 2003-10-29 2007-07-25 Smith Corp A O Electrical machine and method of manufacturing the same
US7669311B2 (en) 2003-10-29 2010-03-02 A. O. Smith Corporation Method of manufacturing a core for an electrical machine
RU2468489C2 (en) * 2008-10-08 2012-11-27 Анатолий Сергеевич Поляков Manufacturing method of magnetic conductor of electromagnet of armour type of vibrating pump
WO2014035251A1 (en) * 2012-09-03 2014-03-06 Noratel As A power transformer assembly
IT201700094491A1 (en) * 2017-08-18 2019-02-18 General Electric Technology Gmbh Reactor.
WO2019034732A1 (en) * 2017-08-18 2019-02-21 General Electric Technology Gmbh Reactor
CN110945608A (en) * 2017-08-18 2020-03-31 通用电器技术有限公司 Electric reactor

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