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GB2019104A - Choke coil - Google Patents

Choke coil

Info

Publication number
GB2019104A
GB2019104A GB7912767A GB7912767A GB2019104A GB 2019104 A GB2019104 A GB 2019104A GB 7912767 A GB7912767 A GB 7912767A GB 7912767 A GB7912767 A GB 7912767A GB 2019104 A GB2019104 A GB 2019104A
Authority
GB
United Kingdom
Prior art keywords
laminations
stacks
coil
choke coil
air gap
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
GB7912767A
Other versions
GB2019104B (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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB2019104A publication Critical patent/GB2019104A/en
Application granted granted Critical
Publication of GB2019104B publication Critical patent/GB2019104B/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
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
    • H01F27/263—Fastening parts of the core together
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

A choke coil for use as a ballast in electric discharge lamps consists of a wound electric coil 1 on the central leg of a laminated core formed from two stacks of laminations 30, 31. An air gap 39 is provided in the central leg. The abutting joints 5 between the laminations 30 and 31 extend transversely to the axis 6 of the coil 1 and the stacks of laminations are held together by snap connections 35, 37; 36, 38 which are situated on the inside of the laminated core and hold the stacks of laminations 30, 31 pressed against each other, at the same time minimizing the air gap 39. The use of E-, I-, T- and U-shaped laminations is envisaged. <IMAGE>
GB7912767A 1978-04-14 1979-04-11 Choke coil Expired GB2019104B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7803966A NL7803966A (en) 1978-04-14 1978-04-14 CHOKING COIL.

Publications (2)

Publication Number Publication Date
GB2019104A true GB2019104A (en) 1979-10-24
GB2019104B GB2019104B (en) 1982-08-18

Family

ID=19830651

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7912767A Expired GB2019104B (en) 1978-04-14 1979-04-11 Choke coil

Country Status (8)

Country Link
JP (1) JPS54139062A (en)
BE (1) BE875544A (en)
DE (1) DE2914096A1 (en)
ES (1) ES479551A1 (en)
FR (1) FR2423045A1 (en)
GB (1) GB2019104B (en)
IT (1) IT1113880B (en)
NL (1) NL7803966A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0353029A3 (en) * 1988-07-27 1990-05-23 Linton And Hirst Limited Improvements in laminations
GB2254964A (en) * 1991-03-26 1992-10-21 Scott & Co Ltd Geo Transformer core assembly
GB2221354B (en) * 1988-07-27 1993-05-12 Linton & Hirst Ltd Improvements in laminations

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3118465A1 (en) * 1981-05-09 1982-11-25 Bruno 8550 Forchheim Waasner Two-piece core laminate, especially for inductors
DE3318370C2 (en) * 1983-05-20 1986-02-06 Waasner, Bruno, 8550 Forchheim Sheet metal core made of two parts and with three legs
JPH0477219U (en) * 1990-11-20 1992-07-06
JPH04322415A (en) * 1991-04-22 1992-11-12 Hirohata Denjikou Center Kk Laminated iron core and manufacture thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0353029A3 (en) * 1988-07-27 1990-05-23 Linton And Hirst Limited Improvements in laminations
US5047745A (en) * 1988-07-27 1991-09-10 Linton And Hirst Limited Laminations
GB2222030B (en) * 1988-07-27 1993-04-28 Linton & Hirst Ltd Improvements in laminations
GB2221354B (en) * 1988-07-27 1993-05-12 Linton & Hirst Ltd Improvements in laminations
GB2254964A (en) * 1991-03-26 1992-10-21 Scott & Co Ltd Geo Transformer core assembly

Also Published As

Publication number Publication date
BE875544A (en) 1979-10-12
IT7921790A0 (en) 1979-04-11
NL7803966A (en) 1979-10-16
DE2914096A1 (en) 1979-10-25
ES479551A1 (en) 1980-01-01
IT1113880B (en) 1986-01-27
FR2423045A1 (en) 1979-11-09
JPS54139062A (en) 1979-10-29
GB2019104B (en) 1982-08-18

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee