EP0529418A1 - Transformateur haute tension du type diode split pour un récepteur de télévision - Google Patents

Transformateur haute tension du type diode split pour un récepteur de télévision Download PDF

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Publication number
EP0529418A1
EP0529418A1 EP92113780A EP92113780A EP0529418A1 EP 0529418 A1 EP0529418 A1 EP 0529418A1 EP 92113780 A EP92113780 A EP 92113780A EP 92113780 A EP92113780 A EP 92113780A EP 0529418 A1 EP0529418 A1 EP 0529418A1
Authority
EP
European Patent Office
Prior art keywords
winding
chamber
chambers
diodes
web
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
EP92113780A
Other languages
German (de)
English (en)
Other versions
EP0529418B1 (fr
Inventor
Walter Goseberg
Wolfgang Reichow
Hans-Werner Sander
Rolf Heidrich
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 Brandt GmbH
Original Assignee
Deutsche Thomson Brandt 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
Priority claimed from DE4127836A external-priority patent/DE4127836A1/de
Priority claimed from DE4129678A external-priority patent/DE4129678A1/de
Application filed by Deutsche Thomson Brandt GmbH filed Critical Deutsche Thomson Brandt GmbH
Publication of EP0529418A1 publication Critical patent/EP0529418A1/fr
Application granted granted Critical
Publication of EP0529418B1 publication Critical patent/EP0529418B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/06—Coil winding
    • H01F41/071—Winding coils of special form
    • 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

  • the invention is based on a high-voltage transformer according to the preamble of claim 1.
  • a transformer contains a large number of partial windings located in the chambers of a coil former and an approximately equal number of diodes, which are connected between the partial windings and spatially at the outer edge of the coil former the partial windings. Since both the chambers with the partial windings and the diodes require a space in the axial direction of the coil former, a correspondingly long coil former results, in particular in the case of a large number of partial windings and diodes, which increases the space requirement and reduces the coupling.
  • the object of the invention is to enable a plurality of diodes to be accommodated without the total space requirement of the coil former with the partial windings and diodes being increased appreciably.
  • a plurality of diodes distributed over the circumference are therefore arranged over a circumference of the coil former without mutual offset in the axial direction. If, for example, four diodes are arranged on the outer edge of a chamber wall, the space requirement for the diodes in the axial direction is only a quarter of the space requirement of the known solutions, in which only one diode is located on each chamber wall. Because the total space requirement for the diodes in the axial direction of the coil body is reduced, the overall length of the coil body is also reduced. This in turn enables increased coupling between the primary winding and the secondary winding to be achieved.
  • each chamber wall is provided with a ramp-shaped recess running from its outer edge tangential to the chamber base without completely interrupting the chamber wall, through which the winding wire is guided from a diode connection or a support point to the chamber base.
  • the winding wire then lies in the ramp-shaped recess and is spaced apart from the winding in the chamber. This creates a distance, in particular at the upper winding edge, between the winding wire and the winding of the chamber, which already has a considerable voltage there compared to the winding wire.
  • the dielectric strength of the winding can be increased in this way.
  • FIG. 1 shows a chamber coil former 1, in the chambers of which a large number of partial windings of the high-voltage transformer are arranged.
  • a plurality of such arrangements with four diodes are provided over the entire length of the coil former 1, with three to five chambers, each with a partial winding, lying between two such arrangements.
  • FIG. 2 shows a top view of FIG. 1.
  • a total of three groups of four diodes 3a-3d distributed over the circumference are provided. Between two groups of diodes of this type there are four chambers 4 in which the partial windings connected to the diodes are located.
  • the chambers 4 are separated from one another by chamber walls 5.
  • the webs 2 have a thickness of about 2 mm, which essentially results from the diameter of the diodes 3.
  • the chamber walls have a smaller thickness of about 1 mm, since they only serve to form the chambers 4 and to achieve high-voltage strength.
  • the diodes 3 are inserted with their connecting wires in a positive locking means on the outer edge of a web 2 each.
  • the winding ends of the windings in the chambers 4 are wound around the connecting wires of the diodes 3, whereby these serve as support points for the thin winding wires.
  • Fig. 3 differs from Fig. 2 in that the diodes 3 do not rest on the outer edge of the web 2, but are inserted into a circumferential groove 6 on the outer edge of the web 2. This solution does not increase the outer diameter of the coil former 1 through the diodes 3.
  • Fig. 4 shows two chambers 4a and 4b with partial windings 7a and 7b.
  • the winding wire 8a emerging from the partial winding 7a at the upper edge of the chamber 4a is connected to a connection of the diode 3.
  • the winding wire 8b of the partial winding 7b of the chamber 4b is connected to the other connection of the diode 3.
  • the web 2 between the chambers 4a and 4b is provided with a ramp-shaped recess 9, which begins at the upper edge of the web 2 and extends tangentially to the chamber base 11.
  • the recess 9 is dimensioned so that the web 2 has no complete interruption. It can be seen that the winding wire 8b lies in the recess 9 and is thereby spaced from the winding 7b.
  • the web 2 retains its insulating effect between the chambers 4a and 4b. In particular, it is ensured that, despite the recess 9, there is no direct connection between the chambers 4a and 4b, that is to say the windings 7a and 7b cannot “see one another directly”.
  • the ramp-shaped recess 9 is also provided on the chamber walls 5 by a distance there too of the wire leading to the bottom of the chamber from the winding located in the chamber.
  • the ramp-shaped recess 9 is indicated by the hatched area.
  • a projection 10 is provided on the web 2 or on the chamber wall 5. The projection 10 serves as a deflection point for the winding wire 8b and ensures that the winding wire 8b comes to rest in the recess 9.
  • FIG. 6 shows in principle the circuit between the diodes 3 and the partial windings 7 in the chambers 4.
  • the winding wire from the chamber base 11 is connected to the anode of the diode and the winding wire from the topmost position in the chamber 4 to the cathode of the diode 3 .
  • the high-voltage connection M1 with the high voltage UH for the picture tube is removed from the chamber bottom of the last partial winding 7.
  • the uppermost layer of the first partial winding 7 is connected to earth, represented by the base M2.
  • FIG. 7 shows a winding diagram for a coil former with five groups of three or four diodes according to FIG. 1, 2 and three or four or five chambers 4 according to FIG. 2 in between.
  • a connection between the diodes 3 and the partial windings 7 according to FIG. 6 arise.
  • the squares on the electrodes of the diodes indicate the two connecting wires of the diodes or the support points to which the winding wires are led.
  • Five wide bars 2a - 2e are shown, each carrying four diodes 3a - 3d.
  • the chambers 4a - 4p formed by the chamber walls 5 are formed, each of which is partially or completely filled with a partial winding 7.
  • the winding begins at the point connected to M1 and is led to the bottom of the chamber 4a.
  • the winding wire from the upper chamber edge of the chamber 4a reaches the cathode of the diode 3b of the web 2a.
  • the winding wire from the anode of the diode 3b is inserted into the chamber 4b and the winding wire from the uppermost layer of the winding of the chamber 4b reaches the cathode of the diode 3c, the anode of which is led into the chamber bottom of the chamber 4c.
  • the chambers 4a-4p are wound, the partial windings being connected to the connecting wires of the diodes 3 at the same time.
  • the connecting wires lie in each case from one connection of the diode 3 to the corresponding chamber only over those chambers which are already wound. This enables automatic winding, even though the connecting wires between the respective diode and the winding of the associated chamber extend over several chambers in the axial direction of the coil former.
  • the winding wire enters the chamber 4k twice and exits the chamber 4k twice.
  • the focusing voltage can be tapped at the support point M3, to which no diode 3 is connected.
  • the winding of the chamber 41 begins in the same way as the winding of the chambers 4a, 4e, 4i.
  • the winding wire which later emerges from the chamber 4m is first fixed to the cathode of the diode 3c on the web 2d, and the winding process on this diode is initially not continued.
  • the winding wire is then removed from the anode of the diode 3a of the web 2e in the chamber 4 ° out and from its uppermost position to the connecting wire of the cathode of the diode 3c of the web 2e.
  • This winding process is also ended.
  • the winding wire is inserted from the anode of the diode 3c on the web 2d into the chamber 4n and leaves it from the uppermost layer.
  • the winding wire is now led via the chambers 4o and 4p to the cathode of the diode 3a of the web 2e. This is now possible because the chambers 4o and 4p have already been wound in the previous winding processes described.
  • additional windings for example for heating the picture tube, for additional operating voltages or return pulses, are first wound on the coil body penetrated by the core, the primary winding and the high-voltage winding of the transformer above it.
  • the additional windings usually have different numbers of turns, different numbers of winding layers and different wire diameters.
  • the additional windings have different heights compared to the base of the coil former and also interruptions between the individual windings. This results in a very uneven course on the top of the windings.
  • the primary winding wound over it also has an uneven course on its surface.
  • the secondary winding for the high voltage wound over the primary winding cannot be wound directly onto the primary winding. Rather, for reasons of high voltage strength, an additional coil former above the primary winding is required, which carries the secondary winding. The uneven surface of the primary winding therefore results in a deterioration in the coupling between the primary and secondary windings.
  • FIGS. 8-10 and claims 11-12 therefore solves the problem of designing the coil former in such a way that the coupling between the primary winding and the secondary winding is not impaired despite the irregularities in the surface of the additional windings.
  • FIG. 8 shows a simplified illustration of a high-voltage transformer with a core 21 on which the coil former 22 is arranged.
  • additional windings 23 are wound with different numbers of turns, different layers and different wire diameters. This results in an uneven course of the surface of the windings 23.
  • the sleeve 24 surrounding the windings 23 is inserted, which consists of a plastic with a wall thickness of 2/10 - 6/10 mm.
  • the primary winding 25 is wound with three layers as a "clean" winding.
  • the defined smooth base formed by the sleeve 24 creates the prerequisite for a smooth course of the surface of the winding 25 without any dents or elevations.
  • the coil former 22 is surrounded by the coil former 26.
  • the coil former 26 is designed as a chamber coil former which has a multiplicity of chambers 28 formed by chamber walls 27.
  • the partial windings 29 of the secondary winding or high-voltage winding are stored in the chambers 28.
  • the partial windings 29 are connected to one another on the principle of the diode split transformer via high-voltage rectifier diodes.
  • the coil body 22 is provided on its surface with a plurality of knobs 210 which are distributed approximately uniformly over the circumference and the axial length.
  • the height of the knobs 210 above the base of the bobbin 22 is slightly larger than the maximum height of the additional windings 23.
  • the knobs 210 form support points for the sleeve 24 and cause the sleeve 24 to extend over the entire circumference and the entire length of the bobbin 22 is held at a defined distance from the bottom of the chamber and is not bulged by the additional windings 23 or the primary winding 25.
  • the knobs 210 also serve to fix the wires of the additional windings 23 in the axial direction.
  • the spaces between the knobs 210 serve for the return of the wires of the additional windings 23 to one end of the coil body 22.
  • a plurality of knobs 210 distributed over the circumference and the length allow a sleeve 24 made of a relatively thin material of approximately 0.2 - 0.6 mm can be used.
  • the sleeve is provided with a slot 211 extending in the axial direction.
  • the sleeve 24 is designed to be resilient in the radial direction in such a way that it automatically contacts the upper edges of the knobs 210.
  • the circumference of the sleeve 24 is dimensioned such that the sleeve 24 does not close completely when plugged in, but rather forms the slot 211 between its ends.
  • the coil former 22 is provided with a nose 212 which, after being placed radially or axially, ripens into the slot 211. As a result, the sleeve 24 is secured against rotation relative to the bobbin 22.
  • the diameter of the wires of the primary winding 25 is relatively large and is approximately 0.5-1 mm. It may therefore be expedient to use stranded wire for the primary winding 25 and, if appropriate, the additional windings 23. As is well known, stranded wire is considerably more supple than a solid copper wire, so that the automatic winding process is facilitated and, if necessary, the available winding space is used even better than in the case of a solid copper wire.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Details Of Television Scanning (AREA)
EP92113780A 1991-08-22 1992-08-13 Transformateur haute tension du type diode split pour un récepteur de télévision Expired - Lifetime EP0529418B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4127836 1991-08-22
DE4127836A DE4127836A1 (de) 1991-08-22 1991-08-22 Hochspannungstransformator fuer einen fernsehempfaenger
DE4129678 1991-09-06
DE4129678A DE4129678A1 (de) 1991-09-06 1991-09-06 Dioden-split-hochspannungstransformator fuer einen fernsehempfaenger

Publications (2)

Publication Number Publication Date
EP0529418A1 true EP0529418A1 (fr) 1993-03-03
EP0529418B1 EP0529418B1 (fr) 1995-05-17

Family

ID=25906611

Family Applications (2)

Application Number Title Priority Date Filing Date
EP92113780A Expired - Lifetime EP0529418B1 (fr) 1991-08-22 1992-08-13 Transformateur haute tension du type diode split pour un récepteur de télévision
EP92917895A Pending EP0599947A1 (fr) 1991-08-22 1992-08-13 Transformateur haute tension a diodes et a enroulements partiels pour recepteur de television

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP92917895A Pending EP0599947A1 (fr) 1991-08-22 1992-08-13 Transformateur haute tension a diodes et a enroulements partiels pour recepteur de television

Country Status (14)

Country Link
US (1) US5629589A (fr)
EP (2) EP0529418B1 (fr)
JP (1) JPH06510398A (fr)
KR (1) KR100235814B1 (fr)
CN (1) CN1041775C (fr)
BR (1) BR9206392A (fr)
CZ (1) CZ282042B6 (fr)
DE (1) DE59202215D1 (fr)
ES (1) ES2075985T3 (fr)
HK (1) HK113096A (fr)
HU (1) HU215312B (fr)
MX (1) MX9204853A (fr)
MY (1) MY109868A (fr)
WO (1) WO1993004557A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2726686A1 (fr) * 1994-11-07 1996-05-10 Thomson Television Components Transformateur haute tension a redressement fractionne avec diodes regroupees
EP0777240A1 (fr) * 1995-12-01 1997-06-04 Deutsche Thomson-Brandt Gmbh Transformateur de ligne à haute tension pour un récepteur de télévision
WO1999003118A1 (fr) * 1997-07-07 1999-01-21 Deutsche Thomson-Brandt Gmbh Transformateur haute tension comportant deux corps de diode
FR2783965A1 (fr) * 1998-09-30 2000-03-31 Thomson Television Components Transformateur haute tension
DE19900111A1 (de) * 1999-01-05 2000-07-06 Thomson Brandt Gmbh Diodensplitt-Hochspannungstransformator

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59309571D1 (de) * 1992-08-04 1999-06-17 Thomson Brandt Gmbh Hochspannungs-Zeilentransformator für einen Fernsehempfänger
US6433663B1 (en) * 1999-12-22 2002-08-13 Thomson Licensing Sa High voltage transformer arrangement
DE10066186B4 (de) 2000-11-17 2008-02-28 Epcos Ag Ferritkern mit neuer Bauform
JP2004516648A (ja) * 2000-12-14 2004-06-03 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 過電圧保護機能を有する高電圧トランスと過電圧保護方法
RU2482562C2 (ru) * 2010-07-09 2013-05-20 В & С Ворлд Ко. Лтд Высоковольтный импульсный трансформатор без сердечника
EP3189528B1 (fr) * 2014-09-02 2018-07-18 Koninklijke Philips N.V. Ensemble de bobine et procédé de fabrication d'un tel ensemble

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2030784A (en) * 1978-08-24 1980-04-10 Sony Corp High voltage transformers
EP0033450A1 (fr) * 1980-01-21 1981-08-12 Licentia Patent-Verwaltungs-GmbH Transformateur de lignes pour récepteur de télévision
EP0201335A2 (fr) * 1985-05-10 1986-11-12 RCA Thomson Licensing Corporation Transformateur et enroulement correspondant
DE3810314A1 (de) * 1988-03-26 1989-10-05 Electronic Werke Deutschland Hochspannungstransformator fuer einen fernsehempfaenger
WO1992010906A1 (fr) * 1990-12-10 1992-06-25 Deutsche Thomson-Brandt Gmbh Transformateur h.t. pour postes recepteurs de television

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL159223C (fr) * 1973-10-10
US4039924A (en) * 1975-12-29 1977-08-02 General Electric Company High voltage winding assembly with improved regulation
US4638282A (en) * 1985-07-18 1987-01-20 United Technologies Automotive, Inc. Wire cross-over arrangement for coil assembly
US4862130A (en) * 1987-07-16 1989-08-29 United Technologies Automotive, Inc. Wire cross-over arrangement for angular coil assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2030784A (en) * 1978-08-24 1980-04-10 Sony Corp High voltage transformers
EP0033450A1 (fr) * 1980-01-21 1981-08-12 Licentia Patent-Verwaltungs-GmbH Transformateur de lignes pour récepteur de télévision
EP0201335A2 (fr) * 1985-05-10 1986-11-12 RCA Thomson Licensing Corporation Transformateur et enroulement correspondant
DE3810314A1 (de) * 1988-03-26 1989-10-05 Electronic Werke Deutschland Hochspannungstransformator fuer einen fernsehempfaenger
WO1992010906A1 (fr) * 1990-12-10 1992-06-25 Deutsche Thomson-Brandt Gmbh Transformateur h.t. pour postes recepteurs de television

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2726686A1 (fr) * 1994-11-07 1996-05-10 Thomson Television Components Transformateur haute tension a redressement fractionne avec diodes regroupees
WO1996014645A1 (fr) * 1994-11-07 1996-05-17 Thomson Television Components France Transformateur haute tension a redressement fractionne avec diodes regroupees
US6133698A (en) * 1994-11-07 2000-10-17 Thomson Multimedia S.A. Fractionated-rectification high-voltage transformer with grouped diodes
EP0777240A1 (fr) * 1995-12-01 1997-06-04 Deutsche Thomson-Brandt Gmbh Transformateur de ligne à haute tension pour un récepteur de télévision
WO1999003118A1 (fr) * 1997-07-07 1999-01-21 Deutsche Thomson-Brandt Gmbh Transformateur haute tension comportant deux corps de diode
US6373203B1 (en) 1997-07-07 2002-04-16 Thomson Licensing Sa Diode-split high-voltage transformer
FR2783965A1 (fr) * 1998-09-30 2000-03-31 Thomson Television Components Transformateur haute tension
EP0991091A1 (fr) * 1998-09-30 2000-04-05 Thomson Television Components France Transformateur à haute tension
US6211766B1 (en) 1998-09-30 2001-04-03 Thomson Television Components France High voltage transformer
DE19900111A1 (de) * 1999-01-05 2000-07-06 Thomson Brandt Gmbh Diodensplitt-Hochspannungstransformator
US6459350B1 (en) 1999-01-05 2002-10-01 Thomson Licensing Sa Diode-split high-voltage transformer

Also Published As

Publication number Publication date
HU215312B (hu) 1998-11-30
EP0599947A1 (fr) 1994-06-08
CZ282042B6 (cs) 1997-04-16
HK113096A (en) 1996-07-05
JPH06510398A (ja) 1994-11-17
CN1070528A (zh) 1993-03-31
KR100235814B1 (ko) 1999-12-15
WO1993004557A1 (fr) 1993-03-04
MX9204853A (es) 1993-02-01
CZ35994A3 (en) 1994-06-15
CN1041775C (zh) 1999-01-20
BR9206392A (pt) 1994-12-13
MY109868A (en) 1997-09-30
EP0529418B1 (fr) 1995-05-17
ES2075985T3 (es) 1995-10-16
HUT68038A (en) 1995-05-29
HU9400230D0 (en) 1994-05-30
DE59202215D1 (de) 1995-06-22
US5629589A (en) 1997-05-13

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