EP0355298A3 - Luftspalt bei einem Transformator für ein Schaltnetzteil - Google Patents

Luftspalt bei einem Transformator für ein Schaltnetzteil Download PDF

Info

Publication number
EP0355298A3
EP0355298A3 EP89110974A EP89110974A EP0355298A3 EP 0355298 A3 EP0355298 A3 EP 0355298A3 EP 89110974 A EP89110974 A EP 89110974A EP 89110974 A EP89110974 A EP 89110974A EP 0355298 A3 EP0355298 A3 EP 0355298A3
Authority
EP
European Patent Office
Prior art keywords
air gap
switching power
power supply
transformer
stray
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Withdrawn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
EP89110974A
Other languages
English (en)
French (fr)
Other versions
EP0355298A2 (de
Inventor
Günter GRUNDIG E.M.V. Elek. Mech. Luber
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.)
Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH
Original Assignee
Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH
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 Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH filed Critical Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH
Publication of EP0355298A2 publication Critical patent/EP0355298A2/de
Publication of EP0355298A3 publication Critical patent/EP0355298A3/de
Withdrawn legal-status Critical Current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
    • H01F27/346—Preventing or reducing leakage fields
    • 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
    • H01F27/255—Magnetic cores made from particles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/10—Composite arrangements of magnetic circuits
    • H01F3/14—Constrictions; Gaps, e.g. air-gaps

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Regulation Of General Use Transformers (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

Der Luftspalt des Ferritkernes bei einem Transformator für ein Schaltnetzteil erzeugt ein magnetisches Streufeld, das zu Wirbelstromverlusten in benachbarten Kupferwicklungen führen kann. Durch Einlegen von Ferritplättchen in den Luftspalt ist der Luftspalt in mehrere Teilluftspalte aufgeteilt, so daß die räumliche Ausdehnung des magnetischen Streufeldes verringert wird. Die Erfindung findet insbesondere Anwendung bei Schaltnetzteilen für Fernsehgeräte.
EP89110974A 1988-08-26 1989-06-16 Luftspalt bei einem Transformator für ein Schaltnetzteil Withdrawn EP0355298A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3828985 1988-08-26
DE19883828985 DE3828985C1 (de) 1988-08-26 1988-08-26

Publications (2)

Publication Number Publication Date
EP0355298A2 EP0355298A2 (de) 1990-02-28
EP0355298A3 true EP0355298A3 (de) 1990-08-22

Family

ID=6361651

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89110974A Withdrawn EP0355298A3 (de) 1988-08-26 1989-06-16 Luftspalt bei einem Transformator für ein Schaltnetzteil

Country Status (2)

Country Link
EP (1) EP0355298A3 (de)
DE (1) DE3828985C1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103680842B (zh) * 2013-12-03 2017-02-08 佛山市顺德区万信电子电器有限公司 一种可消涡流的软磁合金铁芯变压器
CN104021919A (zh) * 2014-05-09 2014-09-03 无锡晶磊电子有限公司 用于滤波电感器的块状组合磁芯
DE102017223322A1 (de) * 2017-12-20 2019-06-27 Robert Bosch Gmbh Transformatorkern und Transformator
US11139109B2 (en) * 2018-09-07 2021-10-05 Abb Power Grids Switzerland Ag Leakage reactance plate for power transformer
EP4379757A1 (de) * 2022-11-30 2024-06-05 Delta Electronics (Thailand) Public Co., Ltd. Magnetische komponente

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2037089A (en) * 1978-11-22 1980-07-02 Philips Nv Ferromagnetic core having a gap
EP0193057A2 (de) * 1985-02-21 1986-09-03 Deutsche Thomson-Brandt GmbH Transformator für einen Fernsehempfänger

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1080475A (en) * 1966-06-13 1967-08-23 British Lighting Ind Ltd A choke having a winding of foil

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2037089A (en) * 1978-11-22 1980-07-02 Philips Nv Ferromagnetic core having a gap
EP0193057A2 (de) * 1985-02-21 1986-09-03 Deutsche Thomson-Brandt GmbH Transformator für einen Fernsehempfänger

Also Published As

Publication number Publication date
EP0355298A2 (de) 1990-02-28
DE3828985C1 (de) 1989-09-14

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