EP0415495A3 - Transformers for intermittent operation at clock frequencies - Google Patents

Transformers for intermittent operation at clock frequencies Download PDF

Info

Publication number
EP0415495A3
EP0415495A3 EP19900202283 EP90202283A EP0415495A3 EP 0415495 A3 EP0415495 A3 EP 0415495A3 EP 19900202283 EP19900202283 EP 19900202283 EP 90202283 A EP90202283 A EP 90202283A EP 0415495 A3 EP0415495 A3 EP 0415495A3
Authority
EP
European Patent Office
Prior art keywords
transformers
intermittent operation
clock frequencies
frequencies
clock
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.)
Withdrawn
Application number
EP19900202283
Other languages
German (de)
Other versions
EP0415495A2 (en
Inventor
Gernot Medenbach
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.)
Philips Intellectual Property and Standards GmbH
Koninklijke Philips NV
Original Assignee
Philips Patentverwaltung GmbH
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 Patentverwaltung GmbH, Philips Gloeilampenfabrieken NV filed Critical Philips Patentverwaltung GmbH
Publication of EP0415495A2 publication Critical patent/EP0415495A2/en
Publication of EP0415495A3 publication Critical patent/EP0415495A3/en
Withdrawn legal-status Critical Current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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Regulation Of General Use Transformers (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
EP19900202283 1989-08-31 1990-08-27 Transformers for intermittent operation at clock frequencies Withdrawn EP0415495A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3928792A DE3928792A1 (en) 1989-08-31 1989-08-31 TRANSFORMERS FOR OPERATION INTERMITTING WITH A CLOCK FREQUENCY
DE3928792 1989-08-31

Publications (2)

Publication Number Publication Date
EP0415495A2 EP0415495A2 (en) 1991-03-06
EP0415495A3 true EP0415495A3 (en) 1992-04-15

Family

ID=6388248

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900202283 Withdrawn EP0415495A3 (en) 1989-08-31 1990-08-27 Transformers for intermittent operation at clock frequencies

Country Status (4)

Country Link
EP (1) EP0415495A3 (en)
JP (1) JPH0391905A (en)
KR (1) KR910005336A (en)
DE (1) DE3928792A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5219219B2 (en) * 2009-05-19 2013-06-26 ニチコン株式会社 Transformer and switching power supply device using the transformer

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2052166A (en) * 1979-06-05 1981-01-21 Philips Nv Transformer
JPS56108218A (en) * 1980-01-31 1981-08-27 Nec Corp Transformer with shield against electrostatic charge
JPS63319254A (en) * 1987-06-20 1988-12-27 Tokin Corp Oxide magnetic material generating low magnetic loss
EP0364171A2 (en) * 1988-10-13 1990-04-18 Matsushita Electric Industrial Co., Ltd. Highfrequency heating apparatus using frequency-converter-type power supply

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2052166A (en) * 1979-06-05 1981-01-21 Philips Nv Transformer
JPS56108218A (en) * 1980-01-31 1981-08-27 Nec Corp Transformer with shield against electrostatic charge
JPS63319254A (en) * 1987-06-20 1988-12-27 Tokin Corp Oxide magnetic material generating low magnetic loss
EP0364171A2 (en) * 1988-10-13 1990-04-18 Matsushita Electric Industrial Co., Ltd. Highfrequency heating apparatus using frequency-converter-type power supply

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 13, no. 169 (C-587)21. April 1989 & JP-A-63 319 254 ( TOKIN ) 27. Dezember 1988 *
PATENT ABSTRACTS OF JAPAN vol. 5, no. 181 (E-83)(853) 20. November 1981 & JP-A-56 108 218 ( NIPPON DENKI ) 27. August 1981 *

Also Published As

Publication number Publication date
JPH0391905A (en) 1991-04-17
EP0415495A2 (en) 1991-03-06
KR910005336A (en) 1991-03-30
DE3928792A1 (en) 1991-03-07

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