EP0071008B1 - Schaltnetzteil-Transformator, insbesondere für einen Fernsehempfänger - Google Patents

Schaltnetzteil-Transformator, insbesondere für einen Fernsehempfänger Download PDF

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Publication number
EP0071008B1
EP0071008B1 EP82105090A EP82105090A EP0071008B1 EP 0071008 B1 EP0071008 B1 EP 0071008B1 EP 82105090 A EP82105090 A EP 82105090A EP 82105090 A EP82105090 A EP 82105090A EP 0071008 B1 EP0071008 B1 EP 0071008B1
Authority
EP
European Patent Office
Prior art keywords
transformer according
winding
windings
compartments
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.)
Expired
Application number
EP82105090A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0071008A1 (de
Inventor
Gerhard Napp
Ulrich Dipl.-Ing. Bieringer
Heinz Kreismer
Walter Dipl.-Ing. Goseberg
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.)
Sentenza Di Nullita' Emessa Dal Tribunale telefunk
Original Assignee
Licentia Patent Verwaltungs GmbH
Telefunken Fernseh und Rundfunk 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6137718&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0071008(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Licentia Patent Verwaltungs GmbH, Telefunken Fernseh und Rundfunk GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of EP0071008A1 publication Critical patent/EP0071008A1/de
Application granted granted Critical
Publication of EP0071008B1 publication Critical patent/EP0071008B1/de
Expired legal-status Critical Current

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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
    • H01F27/28—Coils; Windings; Conductive connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
    • 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
    • H01F38/42—Flyback transformers
    • 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

Definitions

  • Switching power supply transformers of this type are much smaller and lighter than a mains transformer operating at 50 Hz for the same power because they operate at a substantially higher frequency of approximately 20-30 kHz.
  • Such a switched-mode power supply transformer (hereinafter referred to as SMPS transformer) generally contains a primary side with the primary winding serving as the working winding for the switch, as well as additional auxiliary windings and a secondary side with the secondary winding for generating the essential operating voltage and, if appropriate, further additional windings for generating further ones Operating voltages of different sizes and polarities.
  • the secondary side and the primary side are insulated from each other in accordance with the VDE regulations and have the required dielectric strength so that touching live parts on the secondary side remains safe.
  • Another requirement for such an SMPS transformer is that the leakage inductance of at least the primary winding and the secondary winding is as small as possible. If the leakage inductance is too high, transient processes can occur during switching operation, which do not guarantee optimal switching operation of the switching transistor on the primary side and endanger this transistor by excessive power consumption. In addition, an increased leakage inductance undesirably increases the internal resistance of the voltage sources for the individual operating voltages.
  • the invention has for its object to provide an SMPS transformer in chamber winding technology, which enables a rational automatic winding process, d. H. can be wound with only one type of wire, has a spatially narrow and flat construction, has the required insulation between the primary and secondary sides and has low leakage inductances.
  • the transformer should not be potted or soaked and still not generate any annoying noises during operation. Without any mechanical aids, the transformer should only be held on its connecting nails in the printed circuit board by soldering.
  • Figure 1 shows a provided for a switching power supply transformer with the primary side P and the secondary side S, which while maintaining the necessary dielectric strength of z. B. 10000V are electrically isolated from each other.
  • the primary side contains the primary winding 1, which is a working winding in the collector circuit of the switching transistor switched at approximately 20-30 kHz.
  • the primary winding 1 is divided into three sub-windings 1a, 1b and 1c, the ge in series are switched. The beginning of the partial winding 1a and the end of the partial winding 1c are switched into the collector circuit of the switching transistor, while the taps between the partial windings 1 and 1b are not used, but only form bases for connecting the connections of the partial windings.
  • the primary side P also contains an additional winding 3 for feeding the feedback path with which the primary side is designed as a self-oscillating circuit.
  • the primary side P contains an additional winding 4 for regulating the current application point of the switching transistor in the sense of stabilizing the amplitude of the output voltages on the secondary side S.
  • the secondary side S initially contains the secondary winding 2, from which the main operating voltage U1 is obtained via a rectifier circuit.
  • the secondary winding 2 is divided into two partial windings 2a and 2b connected in series.
  • the secondary winding S also contains an additional winding 5 for generating an operating voltage for the video amplifier and a further winding 6 for generating the operating voltage for the vertical deflection stage.
  • an additional winding 7 is provided, from which the operating voltage for the audio output stage is obtained after rectification.
  • the winding 7 consists of three partial windings 7a, 7b, 7c, which are connected in parallel.
  • the sound amplifier has a strongly fluctuating current consumption between 50 mA and 1000 mA, which changes the load on the secondary side S.
  • This change in load can cause an undesirable change in the operating voltage U1, which also influences the line deflection amplitude.
  • This undesirable dependency can be reduced in that the coupling between the winding 7 and the winding 4 for the control is dimensioned larger than the coupling between the winding 2 and the winding 4.
  • This solution is described in more detail in DE-A-2 749 847.
  • This increased coupling between the windings 7 and 4 is achieved in the present case by the three windings 7a, 7b, 7c connected in parallel. After rectification, another winding 8 is used to generate a negative operating voltage of -30 V.
  • FIG. 2 shows the coil former 9 for the individual windings in FIG. 1, which has a total of six chambers 10.
  • One third of the primary winding 1 is divided into the first, third and fifth chambers in the form of the partial windings 1a, 1b, 1c.
  • the secondary winding 2 is divided in half in the form of the partial windings 2a, 2b into the second and fourth chambers.
  • the three partial windings 7a, 7b, 7c of the winding 7 for the audio output stage are divided into the second, fourth and sixth chambers. It can be seen that only alternate windings or partial windings of the primary side P or the secondary side S are located in the chambers. The shown nesting of the windings, i. H.
  • the alternating arrangement of windings of the primary side and the secondary side in successive chambers ensures the desired close coupling between the primary side P and the secondary side S.
  • the arrangement of the windings 3, 4 approximately in the middle of the coil former 9 over the partial winding 1b ensures the desired tight Coupling the windings 3, 4 with the other windings.
  • the individual windings had the following number of turns.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Television Receiver Circuits (AREA)
EP82105090A 1981-07-25 1982-06-10 Schaltnetzteil-Transformator, insbesondere für einen Fernsehempfänger Expired EP0071008B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3129381 1981-07-25
DE19813129381 DE3129381A1 (de) 1981-07-25 1981-07-25 Schaltnetzteil-transformator, insbesondere fuer einen fernsehempfaenger

Publications (2)

Publication Number Publication Date
EP0071008A1 EP0071008A1 (de) 1983-02-09
EP0071008B1 true EP0071008B1 (de) 1985-09-11

Family

ID=6137718

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82105090A Expired EP0071008B1 (de) 1981-07-25 1982-06-10 Schaltnetzteil-Transformator, insbesondere für einen Fernsehempfänger

Country Status (9)

Country Link
US (1) US4500833A (ko)
EP (1) EP0071008B1 (ko)
JP (1) JPS5830111A (ko)
AU (1) AU8575582A (ko)
BR (1) BR8204309A (ko)
DE (2) DE3129381A1 (ko)
HK (1) HK13691A (ko)
NZ (1) NZ201175A (ko)
SG (1) SG46891G (ko)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3614184A1 (de) * 1986-04-26 1987-10-29 Thomson Brandt Gmbh Transformator fuer ein geregeltes schaltnetzteil
DE3617348A1 (de) * 1986-05-23 1987-11-26 Electronic Werke Deutschland Elektrischer wandler
DE3716893A1 (de) * 1987-05-20 1988-12-15 Grundig Emv Horizontal-ablenktransformator
JPS6423354U (ko) * 1987-07-31 1989-02-07
JPH069463Y2 (ja) * 1987-08-03 1994-03-09 株式会社村田製作所 変圧器
DE3732558A1 (de) * 1987-09-26 1989-04-06 Electronic Werke Deutschland Transformator, insbesondere fuer ein schaltnetzteil
DE4007148A1 (de) * 1990-03-07 1991-09-12 Vogt Electronic Ag Volumenoptimierte schwingdrossel fuer hohe aussteuerung und hohe guete
GB9019571D0 (en) * 1990-09-07 1990-10-24 Electrotech Instr Ltd Power transformers and coupled inductors with optimally interleaved windings
FR2730342A1 (fr) * 1995-02-08 1996-08-09 Thomson Television Components Transformateur electrique, en particulier pour circuit d'alimentation a resonance, et circuit equipe d'un tel transformateur
DE19545304A1 (de) * 1995-12-05 1997-06-12 Bosch Gmbh Robert Transformator mit aufgeteilter Primärwicklung in einer Sperrwandler-Versorgungsschaltung
JP2974967B2 (ja) * 1996-04-27 1999-11-10 ティーディーケイ株式会社 コンバータトランス
US5710520A (en) * 1996-06-28 1998-01-20 Harris Corporation Pulse step modulator and transformer
JPH10163044A (ja) * 1996-12-02 1998-06-19 Matsushita Electric Ind Co Ltd コンバータトランス
FR2756967B1 (fr) * 1996-12-09 1999-01-08 Thomson Television Components Transformateur pour alimentation a haute frequence de decoupage
GB2322746A (en) * 1997-02-26 1998-09-02 Thomson Multimedia Sa Preventing pop noise in TV sound
KR100302951B1 (ko) * 1997-06-13 2001-11-30 이근범 트랜스
JP3493573B2 (ja) 1999-02-04 2004-02-03 株式会社タムラ製作所 電話用電源トランス
DE10041475C2 (de) * 2000-08-24 2002-06-13 Thomson Brandt Gmbh Schaltnetzteil
DE102004011867B3 (de) * 2004-03-11 2005-08-04 Block Transformatoren Elektronik Gmbh & Co. Kg Wickelkörper für mindestens zwei Transformatoren
JP4671019B2 (ja) * 2005-01-14 2011-04-13 サンケン電気株式会社 多出力型ｄｃ−ｄｃコンバータ
JP5288025B2 (ja) * 2012-04-27 2013-09-11 Ｔｄｋ株式会社 積層型インダクタ及び積層型インダクタのインダクタンス調整方法
KR101499720B1 (ko) * 2013-08-30 2015-03-06 삼성전기주식회사 초크코일 및 이를 구비한 전원 공급 장치
CN104681243A (zh) * 2014-04-29 2015-06-03 广东美的厨房电器制造有限公司 变压器
CN107946047B (zh) * 2016-10-12 2020-04-14 赤多尼科两合股份有限公司 一种夹层绕法电感
CN112802674B (zh) * 2020-12-30 2023-04-07 合肥博微田村电气有限公司 一种多输入选择的三相隔离变压器
DE102021113821A1 (de) 2021-05-28 2022-12-01 Maschinenfabrik Reinhausen Gmbh Verfahren und system zum betrieb eines regeltransformators

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE182176C (ko) *
GB254317A (en) * 1925-06-27 1927-04-14 Gen Electric Method of winding electric transformer and the like coils
DE541828C (de) * 1927-04-21 1932-01-18 Siemens Schuckertwerke Akt Ges Transformator mit einer stufenweise regelbaren Wicklung und einer Wicklung zum Ausgleich der Amperewindungsverteilung
DE578922C (de) * 1929-06-05 1933-06-19 Siemens & Halske Akt Ges Hochfrequenz-Doppeldrossel
US2137356A (en) * 1934-12-12 1938-11-22 Loewe Opta Gmbh High-voltage transformer for television apparatus
US3017589A (en) * 1958-05-13 1962-01-16 Int Resistance Co Differential transformer
DE1261950B (de) * 1963-03-30 1968-02-29 Siemens Ag Transformator fuer eine Frequenzuntersetzerschaltung
DE1563204C3 (de) * 1966-10-12 1973-10-31 Haddon Transformers Ltd., Ruislip, Middlesex (Grossbritannien) Schweißtransformator
US3594671A (en) * 1969-05-22 1971-07-20 Transducer Systems Inc Transducer means
JPS5628077Y2 (ko) * 1973-05-02 1981-07-03
US3889173A (en) * 1973-12-07 1975-06-10 Texas Instruments Inc Switching regulator power supply
US3967182A (en) * 1975-06-20 1976-06-29 Rca Corporation Regulated switched mode multiple output power supply
DE2749847C2 (de) * 1977-11-08 1988-01-21 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schaltnetzteil für einen Rundfunkempfänger, insbesondere einen Fernsehempfänger
US4274136A (en) * 1978-09-01 1981-06-16 Sony Corporation Bobbin structure for high voltage transformers

Also Published As

Publication number Publication date
AU8575582A (en) 1983-02-03
EP0071008A1 (de) 1983-02-09
NZ201175A (en) 1984-10-19
US4500833A (en) 1985-02-19
SG46891G (en) 1991-09-13
HK13691A (en) 1991-03-08
JPH048928B2 (ko) 1992-02-18
JPS5830111A (ja) 1983-02-22
BR8204309A (pt) 1983-07-19
DE3129381A1 (de) 1983-02-10
DE3266164D1 (en) 1985-10-17
DE3129381C2 (ko) 1989-10-26

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