EP0028383B1 - Zeilentransformator für einen Fernsehempfänger - Google Patents

Zeilentransformator für einen Fernsehempfänger Download PDF

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Publication number
EP0028383B1
EP0028383B1 EP80106561A EP80106561A EP0028383B1 EP 0028383 B1 EP0028383 B1 EP 0028383B1 EP 80106561 A EP80106561 A EP 80106561A EP 80106561 A EP80106561 A EP 80106561A EP 0028383 B1 EP0028383 B1 EP 0028383B1
Authority
EP
European Patent Office
Prior art keywords
winding
high voltage
voltage
secondary winding
bobbin
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
EP80106561A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0028383A1 (de
Inventor
Wolfgang Reichow
Walter Dipl.-Ing. Goseberg
Alfred Pollak
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.)
Deutsche Thomson OHG
Original Assignee
Licentia Patent Verwaltungs 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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Priority to AT80106561T priority Critical patent/ATE7342T1/de
Publication of EP0028383A1 publication Critical patent/EP0028383A1/de
Application granted granted Critical
Publication of EP0028383B1 publication Critical patent/EP0028383B1/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
    • 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

  • a line amplifier for a television receiver includes a transistor serving as a switch, a primary winding, a high-voltage winding and a high-voltage rectifier. The latter generates the high voltage for the picture tube.
  • Such a line amplifier is a relatively expensive and heavy component on which high voltages and currents occur.
  • the line output stage fulfills several functions, e.g. The control of the line deflection coils, the generation of the high voltage for the picture tube and the generation of further pulses for gating purposes and the generation of operating DC voltages, a number of different requirements are placed on the line output stage.
  • the step should be as small and light as possible. It should be easy to manufacture in terms of production technology. A low internal resistance is desirable for the high-voltage source formed by the line output stage.
  • the stage should work as insensitive to faults as possible despite the relatively high performance occurring.
  • Tuning to such a high frequency is not always possible without difficulty when designing a line output stage, since the effective inductances and capacitors must not exceed certain values for this. Compliance with these values is often difficult in practice while at the same time observing other requirements.
  • a line transformer according to the preamble of claim 1 is also known (FR-A-2189961 corresponding to DE-A-2331 597, in particular Fig. 3a), in which one end of the secondary winding supplying the high voltage is connected to earth via a first high-voltage rectifier and the second End connected to the anode of the picture tube via a second, high voltage rectifier with the same polarity, and the secondary winding is designed as a chamber winding.
  • This arrangement of the two high-voltage rectifiers which is symmetrical with respect to the secondary winding, has the advantage that pulses of the same amplitude and opposite polarity occur at the two ends of the secondary winding, the amplitude of the pulses being halved compared to a circuit with a one-sidedly grounded secondary winding and the center point for generating a specific high voltage the secondary winding has no pulse voltage.
  • the high voltage insulation of the secondary winding can be better controlled by this reduction in the pulse amplitude.
  • a smaller maximum pulse amplitude enables a smaller insulation distance between the secondary winding and the primary winding, thus a firmer coupling between these two windings, a lower leakage inductance and a simpler adjustment to a higher harmonic of the frequency of the return vibration.
  • the invention is based on the object, while maintaining the high voltage strength and the smallest possible dimensions, a tuning to a high harmonic of the frequency of the return vibration, in particular the 9th harmonic, see below.
  • the insulation distance in the center is chosen to be smaller than at the ends of the high-voltage winding.
  • the insulation distance is therefore adapted to the effective pulse amplitude.
  • This minimum insulation spacing over the entire length of the high-voltage winding increases the coupling between the secondary winding and the primary winding, thus reducing the leakage inductance and facilitating tuning to a high harmonic. Due to the different filling of the chambers with the high-voltage winding, however, the tuning to the desired harmonic can be influenced, because the coupling between the secondary winding and the primary winding and thus the leakage inductance in the individual chambers is different due to the different insulation spacing.
  • the line output stage transistor 2 controlled by the line-frequency switching voltage 1, the line transformer 3 with the primary winding 4 and the high-voltage winding 5, the two high-voltage rectifiers 6, 7, the smoothing capacitor 8, the picture tube 9, the coupling capacitor 10, which also serves to equalize the tangents, and the line deflection coils 11. It can be seen that the winding 5 is practically equally loaded at both ends by the arrangement of the high-voltage winding 5 for AC voltage.
  • the anode of the diode 6 is earthed anyway.
  • the cathode of the diode 7 is grounded for AC voltage via the capacitor 8, which is essentially formed by the capacitance of the anode coating in the picture tube 9.
  • the insulation distance between the high-voltage winding 5 and the primary winding is therefore adapted to these conditions.
  • FIG. 3 shows such an embodiment.
  • the high-voltage winding 5 is designed as a chamber winding and consists of partial windings 19 which are arranged in the chambers 20 with the numbers 2-12.
  • the thickness d of the coil former 18 at the bottom of each chamber 20 has a minimum in the center of the coil former 18, where the amplitude of the alternating voltage according to FIG. 2 is zero, and increases symmetrically parabolically towards the two ends of the coil former 18.
  • the wall thickness d for the chambers with the numbers 1-13 had the following values.
  • the wall thickness d which determines the insulation distance between the high-voltage winding 5 and the primary winding 4, is therefore advantageously adapted to the amplitude of the alternating voltage acting in the chamber.
  • the chambers with the numbers 1 and 13 are intentionally not provided with a partial winding 19. This has the advantage that the distance between the first partial winding in chamber No. 2 and the last partial winding in chamber No. 12 to the edge-shaped ends 21, 22 of primary winding 4 is increased. As is well known, there is always an increased risk of rollovers between edges on windings.
  • the individual chambers 20 are filled differently.
  • Such a different filling of the chambers i.e. an uneven distribution of the high-voltage winding 5 on the chambers, the leakage inductance and thus the tuning to a harmonic can be influenced.
  • the leakage inductance is changed compared to a uniform winding distribution.
  • FIG. 4 shows a chamber 20, in which the edges running around the bottom of the chamber are rounded like a hollow ball.
  • This solution is based on the fact that the risk of rollovers is greater, especially with sharp edges. This rounding-off risk can be reduced by rounding the peripheral edges according to FIG.
  • the wire of the high-voltage winding is better placed in the chamber 20 during winding.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Details Of Television Scanning (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Television Receiver Circuits (AREA)
  • Electric Cable Installation (AREA)
EP80106561A 1979-11-02 1980-10-25 Zeilentransformator für einen Fernsehempfänger Expired EP0028383B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80106561T ATE7342T1 (de) 1979-11-02 1980-10-25 Zeilentransformator fuer einen fernsehempfaenger.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2944220 1979-11-02
DE19792944220 DE2944220A1 (de) 1979-11-02 1979-11-02 Zeilentransformator fuer einen fernsehempfaenger

Publications (2)

Publication Number Publication Date
EP0028383A1 EP0028383A1 (de) 1981-05-13
EP0028383B1 true EP0028383B1 (de) 1984-05-02

Family

ID=6084948

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80106561A Expired EP0028383B1 (de) 1979-11-02 1980-10-25 Zeilentransformator für einen Fernsehempfänger

Country Status (8)

Country Link
US (1) US4388568A (enrdf_load_stackoverflow)
EP (1) EP0028383B1 (enrdf_load_stackoverflow)
JP (1) JPS5693485A (enrdf_load_stackoverflow)
AT (1) ATE7342T1 (enrdf_load_stackoverflow)
BR (1) BR8007094A (enrdf_load_stackoverflow)
DE (2) DE2944220A1 (enrdf_load_stackoverflow)
ES (1) ES496479A0 (enrdf_load_stackoverflow)
HK (1) HK6090A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4204092A1 (de) * 1992-02-12 1993-08-19 Ant Nachrichtentech Aus mindestens einer wicklungskammer bestehender spulenkoerper fuer wickelgut insbesondere fuer einen hochspannungstransformator

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DE3151642A1 (de) * 1981-12-28 1983-07-14 Standard Elektrik Lorenz Ag, 7000 Stuttgart Zeilentransformator fuer fernsehgeraete
JPS60193750U (ja) * 1984-05-31 1985-12-23 株式会社村田製作所 糸巻歪補正トランス
US4574261A (en) * 1985-08-23 1986-03-04 Varian Associates, Inc. Bakeable electromagnets
US5061896A (en) * 1985-09-03 1991-10-29 United Technologies Corporation Variable transformer to detect linear displacement with constant output amplitude
JPS6258608A (ja) * 1985-09-06 1987-03-14 Murata Mfg Co Ltd ノイズ除去用インダクタ
JPS6379615U (enrdf_load_stackoverflow) * 1986-11-14 1988-05-26
US4862130A (en) * 1987-07-16 1989-08-29 United Technologies Automotive, Inc. Wire cross-over arrangement for angular coil assembly
US5576681A (en) * 1990-12-10 1996-11-19 Deutsche Thomson-Brandt Gmbh High voltage transformer
JPH0996666A (ja) * 1995-09-29 1997-04-08 Sony Corp 磁気センサ
FR2756967B1 (fr) * 1996-12-09 1999-01-08 Thomson Television Components Transformateur pour alimentation a haute frequence de decoupage
US7508608B2 (en) 2004-11-17 2009-03-24 Illumina, Inc. Lithographically fabricated holographic optical identification element
US7441703B2 (en) 2002-08-20 2008-10-28 Illumina, Inc. Optical reader for diffraction grating-based encoded optical identification elements
WO2004024328A1 (en) 2002-09-12 2004-03-25 Cyvera Corporation Method and apparatus for aligning elongated microbeads in order to interrogate the same
US7092160B2 (en) 2002-09-12 2006-08-15 Illumina, Inc. Method of manufacturing of diffraction grating-based optical identification element
US7433123B2 (en) 2004-02-19 2008-10-07 Illumina, Inc. Optical identification element having non-waveguide photosensitive substrate with diffraction grating therein
US7602952B2 (en) 2004-11-16 2009-10-13 Illumina, Inc. Scanner having spatial light modulator
US7604173B2 (en) 2004-11-16 2009-10-20 Illumina, Inc. Holographically encoded elements for microarray and other tagging labeling applications, and method and apparatus for making and reading the same
CN101116086A (zh) 2004-11-16 2008-01-30 伊路敏纳公司 读取编码微珠的方法和设备
US7623624B2 (en) 2005-11-22 2009-11-24 Illumina, Inc. Method and apparatus for labeling using optical identification elements characterized by X-ray diffraction
US7830575B2 (en) 2006-04-10 2010-11-09 Illumina, Inc. Optical scanner with improved scan time
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
US9812248B2 (en) 2014-06-16 2017-11-07 Delphi Technologies, Inc. Ignition coil
US9996920B2 (en) 2014-12-09 2018-06-12 Berkeley Lights, Inc. Automated detection and repositioning of micro-objects in microfluidic devices
JP6247630B2 (ja) * 2014-12-11 2017-12-13 Ckd株式会社 コイルの冷却構造
DE112015006529B4 (de) * 2015-05-13 2023-02-09 Mitsubishi Electric Corporation Zündspule für eine Brennkraftmaschine
US10107251B2 (en) * 2016-07-27 2018-10-23 Marshall Electric Corp. Ignition coil having a winding form
JP7055435B2 (ja) * 2017-07-04 2022-04-18 テグ キョンブク インスティトゥート オブ サイエンス アンド テクノロジー 線形可変差動変換器

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Publication number Priority date Publication date Assignee Title
GB278842A (en) 1926-08-13 1927-10-20 Charles Oliver Improvements in or relating to radio or high frequency choke coils for wireless telephony
US3017589A (en) * 1958-05-13 1962-01-16 Int Resistance Co Differential transformer
US3054976A (en) * 1958-11-18 1962-09-18 Schaevitz Engineering Differential transformer
US3138772A (en) * 1959-05-28 1964-06-23 Automatic Timing And Controls Symmetrical differential transformers
US3573694A (en) * 1969-10-28 1971-04-06 Gen Electric High voltage transformer for television receivers
BE791522A (fr) * 1971-11-18 1973-03-16 Matsushita Electric Ind Co Ltd Transformateur haute tension associe a un circuit a diviation horizontale
JPS4859330A (enrdf_load_stackoverflow) * 1971-11-29 1973-08-20
US3843903A (en) * 1972-06-22 1974-10-22 Matsushita Electric Ind Co Ltd High voltage generator
JPS5122578U (enrdf_load_stackoverflow) * 1974-08-07 1976-02-19
JPS51126011A (en) * 1975-04-24 1976-11-02 Matsushita Electric Ind Co Ltd Horizontal output trans
JPS5390438U (enrdf_load_stackoverflow) * 1976-12-24 1978-07-24
JPS547708Y2 (enrdf_load_stackoverflow) * 1977-01-13 1979-04-10
JPS5924117Y2 (ja) * 1977-02-23 1984-07-17 電気音響株式会社 偏向ヨ−ク装置
US4153889A (en) * 1977-03-01 1979-05-08 Hidetsugu Ikegami Method and device for generating a magnetic field of a potential with electric current components distributed according to a derivative of the potential
US4229786A (en) * 1977-09-26 1980-10-21 Murata Manufacturing Co., Inc. Fly-back transformer with a low ringing ratio
JPS5484425A (en) * 1977-12-19 1979-07-05 Sony Corp Switching regulator
US4247889A (en) * 1979-02-23 1981-01-27 Blaupunkt-Werke Gmbh High-voltage-secondary transformer, particularly television line transformer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4204092A1 (de) * 1992-02-12 1993-08-19 Ant Nachrichtentech Aus mindestens einer wicklungskammer bestehender spulenkoerper fuer wickelgut insbesondere fuer einen hochspannungstransformator

Also Published As

Publication number Publication date
ATE7342T1 (de) 1984-05-15
JPH0147950B2 (enrdf_load_stackoverflow) 1989-10-17
HK6090A (en) 1990-02-02
BR8007094A (pt) 1981-05-05
DE3067706D1 (en) 1984-06-07
ES8201789A1 (es) 1981-12-01
ES496479A0 (es) 1981-12-01
US4388568A (en) 1983-06-14
EP0028383A1 (de) 1981-05-13
DE2944220A1 (de) 1981-05-07
JPS5693485A (en) 1981-07-29

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