EP0401490B1 - Diode-split transformer with a single-layer cylindrical coil as primary winding - Google Patents

Diode-split transformer with a single-layer cylindrical coil as primary winding Download PDF

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Publication number
EP0401490B1
EP0401490B1 EP90106802A EP90106802A EP0401490B1 EP 0401490 B1 EP0401490 B1 EP 0401490B1 EP 90106802 A EP90106802 A EP 90106802A EP 90106802 A EP90106802 A EP 90106802A EP 0401490 B1 EP0401490 B1 EP 0401490B1
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EP
European Patent Office
Prior art keywords
diode
winding
primary winding
split transformer
primary
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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 - Lifetime
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EP90106802A
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German (de)
French (fr)
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EP0401490A1 (en
Inventor
Klaus Grundig E.M.V. Neuhaus
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Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH
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Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH
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Priority to AT90106802T priority Critical patent/ATE97774T1/en
Publication of EP0401490A1 publication Critical patent/EP0401490A1/en
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    • 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

  • the invention relates to a diode split transformer for generating the high voltage in television receivers with the features specified in the preamble of the claim.
  • Diode split transformers are already known in principle and are used to obtain the picture tube high voltage from the flashback pulses present in the horizontal output stage in the flyback period.
  • the primary winding of these diode split transformers is often implemented as a foil winding, since the prerequisites for a good functionality of the diode split transformer are a good coupling between primary and secondary winding, the presence of a homogeneous magnetic field and a good adjustment to higher order harmonics of the line return frequency. These prerequisites are comparatively easy to meet when the primary winding is implemented as a film winding, whereas they were previously not possible when the primary winding was implemented as a simple wire winding.
  • diode split transformers whose primary winding is realized as a foil winding can be seen in the fact that in their manufacture, on the one hand, automatic foil winding machines are required and, on the other hand, the necessary contacting of the foils is expensive.
  • a diode split transformer for generating the high voltage in a television receiver is known.
  • This diode split transformer has a primary winding and a high-voltage winding which is divided into a plurality of partial windings, each of which is connected to one another via a diode.
  • the primary and high-voltage windings are each arranged on a coil former. Additional secondary windings are arranged between the primary and the high-voltage windings, which lie one above the other in the radial direction.
  • a high-voltage transformer is known from EP-A-0 197 698, in which the use of a twisted pair of lines in the gap between the legs of the coil core makes it possible to adjust the inductance of the primary winding.
  • a diode split transformer is known from DE-A-28 48 832, which has a primary winding and a secondary winding which is divided into a plurality of partial windings, each of which is connected to one another via a diode.
  • the individual partial windings of the secondary winding are each on their own bobbin.
  • the coil formers for the partial windings of the secondary winding are arranged one above the other in the radial direction, so that each partial winding has a different distance from the primary winding.
  • the invention has for its object to develop a diode split transformer with the features specified in the preamble of the claim such that the above requirements for a good functionality of the diode split transformer are given without the primary winding having to be constructed as a film winding.
  • Diode split transformer can be guaranteed. Further advantageous properties of the invention result from the explanation of an embodiment using the figures.
  • FIG. 1 shows a schematic illustration of the primary-side arrangement of a diode split transformer according to the invention.
  • This primary-side arrangement consists essentially of a base 1, a cylindrical coil former 2, the primary winding 3, the core 4 and the connecting pins 5, which are introduced into the base 1 and for the electrical connection between the primary-side arrangement of the diode split transformer and the horizontal output stage serve the television receiver.
  • the base 1 and the coil body 2 can be realized as a one-piece injection molded plastic component.
  • the primary winding 3 is wound as a single-layer solenoid. The end of the primary winding 3 remote from the base 1 is led back to the base 1 and thus to the contact pins 5 through the cylindrical coil former according to an essential feature of the invention. This is illustrated in Figure 2.
  • FIG. 2 shows a schematic representation of the sectional plane x of FIG. 1, which is not to scale. It can be seen that the cylindrical coil former 2 has a recess 6 through which the end of the primary winding remote from the base 1 (see FIG. 1) extends in the axial direction to the base is returned.
  • FIG. 3 shows a schematic representation of the arrangement on the secondary side of a diode split transformer according to the invention.
  • This secondary-side arrangement consists essentially of a hollow cylindrical chamber bobbin 7, which has a larger diameter than the primary-side bobbin 2 and which has separating webs 8 on its outer circumference, the secondary winding 9 and diodes, not shown, via which the individual partial windings of the secondary winding with one another or respectively via which the last partial winding is connected to the picture tube anode.
  • the dividers 8 create on the outer circumference of the Chamber coil body 7 chambers 10 and 11.
  • the individual partial windings of the secondary winding 9 are introduced into the chambers 11 and the diodes, not shown, into the chambers 10.
  • the individual partial windings are at a defined distance from one another.
  • the radial distance of the diodes from the central axis of the chamber coil former 7 is greater than the radial distance of the secondary winding 9 from this central axis.
  • the hollow cylindrical chamber bobbin 7 described above is placed in the axial direction to form the finished diode split transformer on the bobbin 2 shown in FIG. 1 in such a way that the primary and secondary windings lie one above the other in the radial direction.
  • the distance between the primary and the secondary winding can be chosen smaller than in the known diode split transformers. It is only through this possibility of reducing the distance between the primary and secondary windings that even when using a single-layer solenoid Primary winding the above conditions for a good functionality of the diode split transformer can be guaranteed. Furthermore, no foil winding machines are required in the manufacture of the diode split transformer claimed. Finally, the difficulties in contacting the films that occur in film winding technology are also avoided.

Abstract

In practice, the primary winding of a diode-split transformer is usually produced as foil winding in order to ensure good functional capability. In the novel diode-split transformer, the prerequisites for good functional capability of the diode-split transformer should also exist when the primary winding is not produced as a foil winding. Essentially, this is achieved by the fact that the primary winding (3) is constructed as a single-layer cylindrical coil and the end of the primary winding remote from the base (1) of the diode-split transformer is brought back to the base through a recess (6) in the coil former. <IMAGE>

Description

Die Erfindung betrifft einen Diodensplit-Transformator zur Erzeugung der Hochspannung in Fernsehempfängern mit den im Oberbegriff des Patentanspruchs angegebenen Merkmalen.The invention relates to a diode split transformer for generating the high voltage in television receivers with the features specified in the preamble of the claim.

Diodensplit-Transformatoren sind bereits grundsätzlich bekannt und dienen dazu, aus den in der Horizontalendstufe in der Rücklaufperiode vorliegenden Rückschlagimpulsen die Bildrohren-Hochspannung zu gewinnen. Die Primärwicklung dieser Diodensplit-Transformatoren wird häufig als Folienwicklung realisiert, da die Voraussetzung für eine gute Funktionsfähigkeit des Diodensplit-Transformators eine gute Kopplung zwischen Primär- und Sekundärwicklung, das Vorliegen eines homogenen magnetischen Feldes und eine gute Abstimmung auf Harmonische höherer Ordnung der Zeilenrücklauffrequenz sind. Diese Voraussetzungen sind bei einer Realisierung der Primärwicklung als Folienwickel vergleichsweise leicht erfüllbar, während sie bei einer Realisierung der Primärwicklung als einfache Drahtwicklung bisher nicht erfüllbar waren. Die Nachteile von Diodensplit-Transformatoren, deren Primärwicklung als Folienwicklung realisiert ist, sind darin zu sehen, daß bei ihrer Fertigung zum einen Folienwickelautomaten benötigt werden und zum anderen die notwendige Kontaktierung der Folien aufwendig ist.Diode split transformers are already known in principle and are used to obtain the picture tube high voltage from the flashback pulses present in the horizontal output stage in the flyback period. The primary winding of these diode split transformers is often implemented as a foil winding, since the prerequisites for a good functionality of the diode split transformer are a good coupling between primary and secondary winding, the presence of a homogeneous magnetic field and a good adjustment to higher order harmonics of the line return frequency. These prerequisites are comparatively easy to meet when the primary winding is implemented as a film winding, whereas they were previously not possible when the primary winding was implemented as a simple wire winding. The disadvantages of diode split transformers, whose primary winding is realized as a foil winding can be seen in the fact that in their manufacture, on the one hand, automatic foil winding machines are required and, on the other hand, the necessary contacting of the foils is expensive.

Aus der DE-A-38 17 892 ist ein Diodensplit-Transformator zur Erzeugung der Hochspannung in einem Fernsehempfänger bekannt. Dieser Diodensplit-Transformator weist eine Primärwicklung und eine in mehrere, jeweils über eine Diode miteinander verbundene Teilwicklungen aufgeteilte Hochspannungswicklung auf. Primär- und Hochspannungswicklung sind jeweils auf einem Spulenkörper angeordnet. Zwischen der Primär- und der Hochspannungswicklung, die in radialer Richtung übereinander liegen, sind weitere Sekundärwicklungen angeordnet.From DE-A-38 17 892 a diode split transformer for generating the high voltage in a television receiver is known. This diode split transformer has a primary winding and a high-voltage winding which is divided into a plurality of partial windings, each of which is connected to one another via a diode. The primary and high-voltage windings are each arranged on a coil former. Additional secondary windings are arranged between the primary and the high-voltage windings, which lie one above the other in the radial direction.

Aus der EP-A-O 197 698 ist ein Hochspannungstransformator bekannt, bei welchem durch die Verwendung eines verdrillten Leitungspaares im Spalt zwischen den Schenkeln des Spulenkerns eine Einstellung der Induktivität der Primärwicklung möglich ist.A high-voltage transformer is known from EP-A-0 197 698, in which the use of a twisted pair of lines in the gap between the legs of the coil core makes it possible to adjust the inductance of the primary winding.

Aus der DE-A-28 48 832 ist ein Diodensplit-Transformator bekannt, welcher eine Primärwicklung und eine in mehrere, jeweils über eine Diode miteinander verbundene Teilwicklungen aufgeteilte Sekundärwicklung aufweist. Die einzelnen Teilwicklungen der Sekundärwicklung befinden sich jeweils auf einem eigenen Spulenkörper.A diode split transformer is known from DE-A-28 48 832, which has a primary winding and a secondary winding which is divided into a plurality of partial windings, each of which is connected to one another via a diode. The individual partial windings of the secondary winding are each on their own bobbin.

Die Spulenkörper für die Teilwicklungen der Sekundärwicklung sind in radialer Richtung übereinander angeordnet, so daß jede Teilwicklung einen anderen Abstand von der Primärwicklung hat.The coil formers for the partial windings of the secondary winding are arranged one above the other in the radial direction, so that each partial winding has a different distance from the primary winding.

Der Erfindung liegt die Aufgabe zugrunde, einen Diodensplit-Transformator mit den im Oberbegriff des Patentanspruchs angegebenen Merkmalen derart weiterzubilden, daß die obengenannten Voraussetzungen für eine gute Funktionsfähigkeit des Diodensplit-Transformators gegeben sind ohne daß die Primärwicklung als Folienwicklung aufgebaut sein muß.The invention has for its object to develop a diode split transformer with the features specified in the preamble of the claim such that the above requirements for a good functionality of the diode split transformer are given without the primary winding having to be constructed as a film winding.

Diese Aufgabe wird bei einem Diodensplit-Transformator mit den im Oberbegriff des Patentanspruchs angegebenen Merkmalen durch die im kennzeichnenden Teil des Patentanspruchs angegebenen Merkmale gelost.This object is achieved in a diode split transformer with the features specified in the preamble of the claim by the features specified in the characterizing part of the claim.

Die Vorteile der Erfindung bestehen insbesondere darin, daß durch die Rückführung des Endes der Primärwicklung durch eine Ausnehmung innerhalb des zweiten zylinderförmigen Spulenkörpers der Abstand zwischen Primär- und Sekundärwicklung bis hinab zur Corona-Grenze, bei der unerwünschte Ladungsübergänge zwischen Sekundär- und Primärseite auftreten, frei gewählt werden kann. Dadurch können die obengenannten Voraussetzungen für eine gute Funktionsfähigkeit desThe advantages of the invention are in particular that the return of the end of the primary winding through a recess within the second cylindrical bobbin, the distance between the primary and secondary winding down to the corona limit, at which undesirable charge transitions between the secondary and primary side occur can be chosen. As a result, the above requirements for good functionality of the

Diodensplit-Transformators gewährleistet werden. Weitere vorteilhafte Eigenschaften der Erfindung ergeben sich aus der Erläuterung eines Ausführungsbeispiels anhand der Figuren.Diode split transformer can be guaranteed. Further advantageous properties of the invention result from the explanation of an embodiment using the figures.

Es zeigt

  • Figur 1 eine schematische Darstellung der primärseitigen Anordnung eines Diodensplit-Transformators nach der Erfindung,
  • Figur 2 eine schematische Darstellung der Schnittebene x von Figur 1, und
  • Figur 3 eine schematische Darstellung der sekundärseitigen Anordnung eines Diodensplit-Transformators nach der Erfindung.
It shows
  • FIG. 1 shows a schematic illustration of the arrangement on the primary side of a diode split transformer according to the invention,
  • Figure 2 is a schematic representation of the section plane x of Figure 1, and
  • Figure 3 is a schematic representation of the secondary arrangement of a diode split transformer according to the invention.

Die Figur 1 zeigt eine schematische Darstellung der primärseitigen Anordnung eines Diodensplit-Transformators nach der Erfindung. Diese primärseitige Anordnung besteht im wesentlichen aus einem Sockel 1, einem zylinderförmigen Spulenkörper 2, der Primärwicklung 3, dem Kern 4 und den Anschlußstiften 5, welche in den Sockel 1 eingebracht sind und zur elektrischen Verbindung zwischen der primärseitigen Anordnung des Diodensplit-Transformators und der Horizontalendstufe des Fernsehempfängers dienen. Der Sockel 1 und der Spulenkörper 2 können als einstückig gespritztes Kunststoffbauteil realisiert sein. Auf dem Spulenkörper 2 ist die Primärwicklung 3 als einlagige Zylinderspule aufgewickelt. Das vom Sockel 1 abgelegene Ende der Primärwicklung 3 wird nach einem wesentlichen Merkmal der Erfindung durch den zylinderförmigen Spulenkörper zum Sockel 1 und damit zu den Kontaktstiften 5 zurückgeführt. Dies ist in Figur 2 veranschaulicht.FIG. 1 shows a schematic illustration of the primary-side arrangement of a diode split transformer according to the invention. This primary-side arrangement consists essentially of a base 1, a cylindrical coil former 2, the primary winding 3, the core 4 and the connecting pins 5, which are introduced into the base 1 and for the electrical connection between the primary-side arrangement of the diode split transformer and the horizontal output stage serve the television receiver. The base 1 and the coil body 2 can be realized as a one-piece injection molded plastic component. On the Coil body 2, the primary winding 3 is wound as a single-layer solenoid. The end of the primary winding 3 remote from the base 1 is led back to the base 1 and thus to the contact pins 5 through the cylindrical coil former according to an essential feature of the invention. This is illustrated in Figure 2.

Die Figur 2 zeigt eine nicht maßstabgerechte schematische Darstellung der Schnittebene x von Figur 1. Es ist ersichtlich, daß der zylinderförmige Spulenkörper 2 eine Ausnehmung 6 aufweist, durch die das vom Sockel 1 (siehe Figur 1) abgelegene Ende der Primärwicklung in axialer Richtung zum Sockel zurückgeführt wird.FIG. 2 shows a schematic representation of the sectional plane x of FIG. 1, which is not to scale. It can be seen that the cylindrical coil former 2 has a recess 6 through which the end of the primary winding remote from the base 1 (see FIG. 1) extends in the axial direction to the base is returned.

Die Figur 3 zeigt eine schematische Darstellung der sekundärseitigen Anordnung eines Diodensplit-Transformators nach der Erfindung. Diese sekundärseitige Anordnung besteht im wesentlichen aus einem hohlzylindrischen Kammerspulenkörper 7, welcher einen größeren Durchmesser hat als der primärseitige Spulenkörper 2 und welcher an seinem äußeren Umfang Trennstege 8 aufweist, der Sekundärwicklung 9 sowie nicht gezeichneten Dioden, über welche teilweise die einzelnen Teilwicklungen der Sekundärwicklung miteinander bzw. über welche die letzte Teilwicklung mit der Bildröhren-Anode verbunden sind. Die genannten Trennstege 8 schaffen am Außenumfang des Kammerspulen-Körpers 7 Kammern 10 und 11. In die Kammern 11 werden die einzelnen Teilwicklungen der Sekundärwicklung 9 und in die Kammern 10 die genannten, nicht gezeichneten Dioden eingebracht. Durch das Vorhandensein der Kammern 10 weisen die einzelnen Teilwicklungen voneinander einen definierten Abstand auf. Der radiale Abstand der Dioden von der Mittelachse des Kammerspulenkörpers 7 ist größer als der radiale Abstand der Sekundärwicklung 9 zu dieser Mittelachse.FIG. 3 shows a schematic representation of the arrangement on the secondary side of a diode split transformer according to the invention. This secondary-side arrangement consists essentially of a hollow cylindrical chamber bobbin 7, which has a larger diameter than the primary-side bobbin 2 and which has separating webs 8 on its outer circumference, the secondary winding 9 and diodes, not shown, via which the individual partial windings of the secondary winding with one another or respectively via which the last partial winding is connected to the picture tube anode. The dividers 8 create on the outer circumference of the Chamber coil body 7 chambers 10 and 11. The individual partial windings of the secondary winding 9 are introduced into the chambers 11 and the diodes, not shown, into the chambers 10. Due to the presence of the chambers 10, the individual partial windings are at a defined distance from one another. The radial distance of the diodes from the central axis of the chamber coil former 7 is greater than the radial distance of the secondary winding 9 from this central axis.

Der vorstehend beschriebene hohlzylindrische Kammerspulenkörper 7 wird zur Bildung des fertigen Diodensplit-Transformators in Achsrichtung auf den in Figur 1 gezeigten Spulenkörper 2 derart aufgesteckt, daß Primär- und Sekundärwicklung in radialer Richtung übereinanderliegen.The hollow cylindrical chamber bobbin 7 described above is placed in the axial direction to form the finished diode split transformer on the bobbin 2 shown in FIG. 1 in such a way that the primary and secondary windings lie one above the other in the radial direction.

Dadurch daß die beschriebene Rückführung des vom Sockel 1 abgelegenen Endes der Primärwicklung innerhalb des Spulenkörpers 2 erfolgt und nicht - wie es bei bekannten Diodensplit-Transformatoren der Fall ist - zwischen der Primär- und der Sekundärwicklung, kann der Abstand zwischen der Primär- und der Sekundärwicklung kleiner gewählt werden als bei den bekannten Diodensplit-Transformatoren. Erst durch diese Möglichkeit, den Abstand zwischen Primär- und Sekundärwicklung zu verkleinern, können auch bei Verwendung einer einlagigen Zylinderspule als Primärwicklung die obengenannten Voraussetzungen für eine gute Funktionsfähigkeit des Diodensplit-Transformators gewährleistet werden. Ferner werden bei der Fertigung des beanspruchten Diodensplit-Transformators keine Folienwickelautomaten benötigt. Schließlich werden auch die bei der Folienwickeltechnik auftretenden Schwierigkeiten bei der Kontaktierung der Folien vermieden.Because the described return of the end of the primary winding remote from the base 1 takes place within the coil former 2 and not - as is the case with known diode split transformers - between the primary and the secondary winding, the distance between the primary and the secondary winding can be chosen smaller than in the known diode split transformers. It is only through this possibility of reducing the distance between the primary and secondary windings that even when using a single-layer solenoid Primary winding the above conditions for a good functionality of the diode split transformer can be guaranteed. Furthermore, no foil winding machines are required in the manufacture of the diode split transformer claimed. Finally, the difficulties in contacting the films that occur in film winding technology are also avoided.

Claims (1)

  1. Diode-split transformer for generating the high tension in television receivers, comprising a secondary winding (9) applied to a first cylindrical coil former (7) and divided into a number of part-windings in each case connected to one another via a diode, and a primary winding (3) constructed as single-layer cylindrical coil applied to a second cylindrical coil former (2) permanently connected to a base (1), the diameter of the second coil former (2) being smaller than that of the first coil former (7) and the two coil formers (2, 7) being arranged in such a manner that the primary and the secondary windings are above one another in the radial direction,
    characterized in that
    - the part-windings of the secondary winding are combined with one another at axial distance from one another in a cylindrical chamber-type coil former (7), and
    - the end of the primary winding (3) remote from the base (1) is brought back to the base (1) through a recess (6) in the second cylindrical coil former (2).
EP90106802A 1989-06-09 1990-04-05 Diode-split transformer with a single-layer cylindrical coil as primary winding Expired - Lifetime EP0401490B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90106802T ATE97774T1 (en) 1989-06-09 1990-04-05 DIODE SPLIT TRANSFORMER WITH SINGLE-LAYER CYLINDER COIL AS PRIMARY WINDING.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3918905A DE3918905A1 (en) 1989-06-09 1989-06-09 Diode split transformer with single-layer cylinder coil as primary winding
DE3918905 1989-06-09

Publications (2)

Publication Number Publication Date
EP0401490A1 EP0401490A1 (en) 1990-12-12
EP0401490B1 true EP0401490B1 (en) 1993-11-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP90106802A Expired - Lifetime EP0401490B1 (en) 1989-06-09 1990-04-05 Diode-split transformer with a single-layer cylindrical coil as primary winding

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EP (1) EP0401490B1 (en)
AT (1) ATE97774T1 (en)
DE (2) DE3918905A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4129678A1 (en) * 1991-09-06 1993-03-11 Thomson Brandt Gmbh Divide split high voltage transformer for high-scan TV receiver with HV of 35kV
KR100302951B1 (en) * 1997-06-13 2001-11-30 이근범 Transformer
JP6405453B2 (en) * 2014-09-02 2018-10-17 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． Bobbin assembly and method for generating a bobbin assembly

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2848832A1 (en) * 1978-11-11 1980-05-22 Denki Onkyo Co Ltd LINE DEFLECTION TRANSFORMER
US4591819A (en) * 1985-03-28 1986-05-27 Rca Corporation Inductance adjustment for transformers
DE3817892C2 (en) * 1987-05-27 1998-01-29 Rca Licensing Corp High voltage transformer

Also Published As

Publication number Publication date
DE59003580D1 (en) 1994-01-05
DE3918905A1 (en) 1990-12-13
EP0401490A1 (en) 1990-12-12
ATE97774T1 (en) 1993-12-15

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