EP0609155A3 - Shielding device for a switching power supply transformer. - Google Patents

Shielding device for a switching power supply transformer. Download PDF

Info

Publication number
EP0609155A3
EP0609155A3 EP94400705A EP94400705A EP0609155A3 EP 0609155 A3 EP0609155 A3 EP 0609155A3 EP 94400705 A EP94400705 A EP 94400705A EP 94400705 A EP94400705 A EP 94400705A EP 0609155 A3 EP0609155 A3 EP 0609155A3
Authority
EP
European Patent Office
Prior art keywords
power supply
switching power
shielding device
supply transformer
transformer
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
EP94400705A
Other languages
German (de)
French (fr)
Other versions
EP0609155B1 (en
EP0609155A2 (en
Inventor
Jean-Yves Buatois
Jean-Michel Bouillot
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.)
Thomson Television Components France SA
Original Assignee
Orega Electronique et Mecanique
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 Orega Electronique et Mecanique filed Critical Orega Electronique et Mecanique
Publication of EP0609155A2 publication Critical patent/EP0609155A2/en
Publication of EP0609155A3 publication Critical patent/EP0609155A3/en
Application granted granted Critical
Publication of EP0609155B1 publication Critical patent/EP0609155B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • 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
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • H01F27/363—Electric or magnetic shields or screens made of electrically conductive material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/02—Coils wound on non-magnetic supports, e.g. formers
    • H01F2005/022—Coils wound on non-magnetic supports, e.g. formers wound on formers with several winding chambers separated by flanges, e.g. for high voltage applications

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
  • Electron Sources, Ion Sources (AREA)
  • Insulators (AREA)
EP94400705A 1989-12-01 1990-11-28 Shielding device for a switching power supply transformer Expired - Lifetime EP0609155B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR8915884A FR2655475B1 (en) 1989-12-01 1989-12-01 SHIELDING DEVICE FOR A CUT-OUT POWER TRANSFORMER.
FR8915884 1989-12-01
EP90403369A EP0430802B1 (en) 1989-12-01 1990-11-28 Shielding device for a switching power supply transformer

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP90403369.3 Division 1990-11-28

Publications (3)

Publication Number Publication Date
EP0609155A2 EP0609155A2 (en) 1994-08-03
EP0609155A3 true EP0609155A3 (en) 1994-12-14
EP0609155B1 EP0609155B1 (en) 1996-10-30

Family

ID=9388042

Family Applications (2)

Application Number Title Priority Date Filing Date
EP90403369A Expired - Lifetime EP0430802B1 (en) 1989-12-01 1990-11-28 Shielding device for a switching power supply transformer
EP94400705A Expired - Lifetime EP0609155B1 (en) 1989-12-01 1990-11-28 Shielding device for a switching power supply transformer

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP90403369A Expired - Lifetime EP0430802B1 (en) 1989-12-01 1990-11-28 Shielding device for a switching power supply transformer

Country Status (5)

Country Link
EP (2) EP0430802B1 (en)
DE (2) DE69029045T2 (en)
ES (2) ES2097613T3 (en)
FR (1) FR2655475B1 (en)
SG (2) SG46710A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3311391B2 (en) * 1991-09-13 2002-08-05 ヴィエルティー コーポレーション Leakage inductance reducing transformer, high frequency circuit and power converter using the same, and method of reducing leakage inductance in transformer
DE69631462D1 (en) * 1995-11-27 2004-03-11 Vlt Corp Plating permeable cores
FR2756967B1 (en) * 1996-12-09 1999-01-08 Thomson Television Components TRANSFORMER FOR HIGH-CUT FREQUENCY POWER SUPPLY

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1069711B (en) * 1959-11-26
EP0081111A1 (en) * 1981-12-04 1983-06-15 Licentia Patent-Verwaltungs-GmbH Transformer, particularly for a switching mode power supply circuit in a television receiver
EP0131700A2 (en) * 1983-05-09 1985-01-23 Zanussi Elettromeccanica S.p.A. Switch mode transformer having a ferrite core

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH607264A5 (en) * 1975-05-23 1978-11-30 Landis & Gyr Ag Instrument transformer with earthed screen between windings
DE2931382A1 (en) * 1979-08-02 1981-02-26 Bosch Gmbh Robert SHORT RING SENSOR
DD200830A1 (en) * 1981-09-25 1983-06-15 Martin Dietrich HOCHSPANNUNGSABSCHIRMELEKTRODE
JPS61137309A (en) * 1984-12-08 1986-06-25 Nissin Electric Co Ltd Gas insulated potential transformer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1069711B (en) * 1959-11-26
EP0081111A1 (en) * 1981-12-04 1983-06-15 Licentia Patent-Verwaltungs-GmbH Transformer, particularly for a switching mode power supply circuit in a television receiver
EP0131700A2 (en) * 1983-05-09 1985-01-23 Zanussi Elettromeccanica S.p.A. Switch mode transformer having a ferrite core

Also Published As

Publication number Publication date
SG46473A1 (en) 1998-02-20
EP0609155B1 (en) 1996-10-30
DE69029045T2 (en) 1997-09-25
FR2655475A1 (en) 1991-06-07
DE69027185T2 (en) 1996-11-07
EP0609155A2 (en) 1994-08-03
DE69027185D1 (en) 1996-07-04
ES2097613T3 (en) 1997-04-01
FR2655475B1 (en) 1992-02-21
DE69029045D1 (en) 1996-12-05
ES2088424T3 (en) 1996-08-16
EP0430802A1 (en) 1991-06-05
SG46710A1 (en) 1998-02-20
EP0430802B1 (en) 1996-05-29

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