EP0269074A1 - Line transformer - Google Patents

Line transformer Download PDF

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Publication number
EP0269074A1
EP0269074A1 EP87117337A EP87117337A EP0269074A1 EP 0269074 A1 EP0269074 A1 EP 0269074A1 EP 87117337 A EP87117337 A EP 87117337A EP 87117337 A EP87117337 A EP 87117337A EP 0269074 A1 EP0269074 A1 EP 0269074A1
Authority
EP
European Patent Office
Prior art keywords
adjuster
line transformer
housing
voltage
arrangement
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
EP87117337A
Other languages
German (de)
French (fr)
Other versions
EP0269074B1 (en
Inventor
Erich Dr. Kettner
Heinz Lehner
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.)
Nokia Deutschland GmbH
Original Assignee
Nokia Deutschland GmbH
Standard Elektrik Lorenz AG
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 Nokia Deutschland GmbH, Standard Elektrik Lorenz AG filed Critical Nokia Deutschland GmbH
Publication of EP0269074A1 publication Critical patent/EP0269074A1/en
Application granted granted Critical
Publication of EP0269074B1 publication Critical patent/EP0269074B1/en
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
    • 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
    • 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
    • H01F2038/423—Flyback transformers with adjusting potentiometers

Definitions

  • the invention relates to a line transformer for television sets according to the preamble of claim 1.
  • Such a line transformer is known from EP-B1-66 804.
  • the contact parts of the adjuster arrangement consist of solder lugs attached to a substrate carrying the adjuster, from which printed conductor tracks lead to the adjuster.
  • the solder lugs are connected to the high voltage winding or the zero potential. The distance between the solder lugs determines the maximum high voltage that can be applied to the adjuster arrangement. This then results in the maximum adjustable focus voltage for the picture tube of the television set.
  • the invention has for its object to provide a line transformer with an adjuster arrangement with a higher dielectric strength.
  • the line transformer shown in Fig. 1 has an insulating housing 1, in which a winding 2 is shown, which is the primary winding and the low-voltage secondary windings.
  • the windings of the high-voltage secondary winding are wound on a coil former 3, which has a number of winding chambers.
  • the diodes 4 connected between the partial windings of the high-voltage secondary winding are arranged on the circumference of the coil former 3.
  • the insulating housing 1 has a partition 5, on the sides of which sliding seat guides 6 are arranged.
  • the adjuster assembly 7 is inserted into these sliding seat guides.
  • the adjuster arrangement 7 is a cuboid box in which the adjusters, consisting of variable and fixed resistors, are arranged for setting a focus and grid 2 voltage. In addition, the lines 8 for the set voltages to be discharged are fastened to it.
  • the adjuster arrangement 7 has Contact parts 9, which use soldered wires 13 and 14 to establish the connection to the high-voltage winding and the zero potential. It can be seen that the contact parts 9, when the adjuster arrangement 7 is in its intended location, protrude through narrow slots in the insulating housing 1.
  • the hook 10 connected to the adjuster arrangement can also be seen, which engages behind the nose 11 after the insertion of the adjuster arrangement and holds the adjuster arrangement in place.
  • a line 15 is connected to the diode 4 connected to the last partial winding of the high-voltage winding, with which the generated high voltage is applied to the picture tube of the television set.
  • the insulating material housing is closed at this point by a grommet 16 pushed over the line 15.
  • the insulating housing 1 is filled with a self-curing synthetic resin in order to increase the dielectric strength.
  • the line transformer also has a ferrite core 12.
  • the substrate 17 for example made of ceramic, has two semicircular resistance tracks 18, 19, a straight resistance track 20 and two conductor tracks 21, 22. There are also two wipers 23 and 24, to which the lines 8 are connected.
  • the semicircular resistance tracks 18, 19 with the associated wipers 23 and 24 represent the adjusters of the adjuster arrangement.
  • the conductor track 21 connects the resistance track 18 to a soldering lug serving as contact part 9, which is connected to the ground potential becomes.
  • the conductor track 22 connects the resistance track 19 to an insulated wire 25, which runs along the substrate 17 and to which the high-voltage winding is connected.
  • the part of the insulated wire 25 projecting beyond the end of the substrate 17 carrying the contact part 9 is stripped at its end.
  • the insulated wire also has such a high rigidity that its stripped end, like the soldering lug of the contact part 9, can be pushed through the narrow slots in the insulating material housing 1 when the adjuster arrangement 7 is inserted into the sliding seat guide 6 of the line transformer.
  • the insulation of the wire 5 extends into the interior of the insulating material housing.
  • This configuration of the adjuster arrangement 7 achieves a very high dielectric strength without creating a complicated structure.
  • the simple assembly of the adjuster arrangement with the line transformer is also retained.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Details Of Television Scanning (AREA)
  • Housings And Mounting Of Transformers (AREA)

Abstract

In a line transformer for television sets, the adjuster arrangement for the focus voltage is attached to the housing of insulating material by means of a guide with a sliding fit. To connect the high-voltage winding electrically to the adjuster (19, 24), an insulated wire (25) is provided and to connect the adjuster electrically to the zero potential, a contact part (9) is provided. This results in a high dielectric strength of the adjuster arrangement. <IMAGE>

Description

Die Erfindung bezieht sich auf einen Zeilentransformator für Fernsehgeräte gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a line transformer for television sets according to the preamble of claim 1.

Aus der EP-B1-66 804 ist ein derartiger Zeilentransformator bekannt. Die Kontaktteile der Einstelleranordnung bestehen dabei aus an einem die Einsteller tragenden Substrat befestigten Lötösen, von denen gedruckte Leiterbahnen zu den Einstellern führen. Die Lötösen sind mit der Hochspannungswicklung bzw. dem Nullpotential verbunden. Der Abstand zwischen den Lötösen bestimmt die maximal an die Einstelleranordnung anlegbare Hochspannung. Hieraus ergibt sich dann die höchstens einstellbare Fokusspannung für die Bildröhre des Fernsehgerätes.Such a line transformer is known from EP-B1-66 804. The contact parts of the adjuster arrangement consist of solder lugs attached to a substrate carrying the adjuster, from which printed conductor tracks lead to the adjuster. The solder lugs are connected to the high voltage winding or the zero potential. The distance between the solder lugs determines the maximum high voltage that can be applied to the adjuster arrangement. This then results in the maximum adjustable focus voltage for the picture tube of the television set.

Der Erfindung liegt die Aufgabe zugrunde, einen Zeilentransformator mit einer Einstelleranordnung mit einer höheren Spannungsfestigkeit anzugeben.The invention has for its object to provide a line transformer with an adjuster arrangement with a higher dielectric strength.

Die Lösung dieser Aufgabe erfolgt mit den im Anspruch 1 angegebenen Mitteln. Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen 2 und 3 enthalten.This object is achieved with the means specified in claim 1. Advantageous embodiments of the invention are contained in subclaims 2 and 3.

Die Erfindung wird nun anhand von einem in den Figuren gezeigten Ausführungsbeispiel näher erläutert. Es zeigen:

  • Fig. 1 einen Längsschnitt durch den Zeilentransformator und
  • Fig. 2 die Draufsicht auf die Einsteller der Einstelleranordnung.
The invention will now be explained in more detail with reference to an embodiment shown in the figures. Show it:
  • Fig. 1 shows a longitudinal section through the line transformer and
  • Fig. 2 is a top view of the adjuster of the adjuster assembly.

Der in Fig. 1 dargestellte Zeilentransformator weist ein Isolierstoffgehäuse 1 auf, in dem ein Wickel 2 dargestellt ist, bei dem es sich um die Primärwicklung und die Niederspannungs-Sekundärwicklungen handelt. Auf einen Spulenkörper 3, der eine Anzahl von Wickelkammern aufweist, sind die Wicklungen der Hochspannungs-Sekundärwicklung gewickelt. Am Umfang des Spulenkörpers 3 sind die zwischen die Teilwicklungen der Hochspannungs-Sekundärwicklung geschalteten Dioden 4 angeordnet. Das Isolierstoffgehäuse 1 besitzt eine Trennwand 5, an deren Seiten Schiebesitzführungen 6 angeordnet sind. Die Einstelleranordnung 7 ist in diese Schiebesitzführungen eingeführt.The line transformer shown in Fig. 1 has an insulating housing 1, in which a winding 2 is shown, which is the primary winding and the low-voltage secondary windings. The windings of the high-voltage secondary winding are wound on a coil former 3, which has a number of winding chambers. The diodes 4 connected between the partial windings of the high-voltage secondary winding are arranged on the circumference of the coil former 3. The insulating housing 1 has a partition 5, on the sides of which sliding seat guides 6 are arranged. The adjuster assembly 7 is inserted into these sliding seat guides.

Die Einstelleranordnung 7 ist ein quaderförmiger Kasten, in dem die Einsteller, bestehend aus veränderlichen und festen Widerständen, für die Einstellung einer Fokus- und Gitter-2-Spannung angeordnet sind. Außerdem sind an ihm die Leitungen 8 für die eingestellten und abzuführenden Spannungen befestigt. Die Einstelleranordnung 7 weist Kontaktteile 9 auf, die mittels angelöteter Drähte 13 bzw. 14 die Verbindung mit der Hochspannungswicklung und dem Nullpotential herstellen. Es ist ersichtlich, daß die Kontaktteile 9, wenn sich die Einstelleranordnung 7 an ihrem vorgesehenen Ort befindet, durch schmale Schlitze im Isolierstoffgehäuse 1 hindurchragen. Es ist außerdem der mit der Einstelleranordnung verbundene Haken 10 zu erkennen, der nach dem Einschieben der Einstelleranordnung hinter der Nase 11 einrastet und die Einstelleranordnung festhält.The adjuster arrangement 7 is a cuboid box in which the adjusters, consisting of variable and fixed resistors, are arranged for setting a focus and grid 2 voltage. In addition, the lines 8 for the set voltages to be discharged are fastened to it. The adjuster arrangement 7 has Contact parts 9, which use soldered wires 13 and 14 to establish the connection to the high-voltage winding and the zero potential. It can be seen that the contact parts 9, when the adjuster arrangement 7 is in its intended location, protrude through narrow slots in the insulating housing 1. The hook 10 connected to the adjuster arrangement can also be seen, which engages behind the nose 11 after the insertion of the adjuster arrangement and holds the adjuster arrangement in place.

An die mit der letzten Teilwicklung der Hochspannungswicklung verbundene Diode 4 ist eine Leitung 15 angeschlossen, mit der die erzeugte Hochspannung an die Bildröhre des Fernsehgerätes angelegt wird. Das Isolierstoffgehäuse ist an dieser Stelle durch eine über die Leitung 15 geschobene Tülle 16 verschlossen. Das Isolierstoffgehäuse 1 ist mit einem selbsthärtenden Kunstharz gefüllt, um die Spannungsfestigkeit zu erhöhen. Der Zeilentransformator weist darüberhinaus einen Ferritkern 12 auf.A line 15 is connected to the diode 4 connected to the last partial winding of the high-voltage winding, with which the generated high voltage is applied to the picture tube of the television set. The insulating material housing is closed at this point by a grommet 16 pushed over the line 15. The insulating housing 1 is filled with a self-curing synthetic resin in order to increase the dielectric strength. The line transformer also has a ferrite core 12.

In der Fig. 2 ist die Einstelleranordnung 7 ohne ihren quaderförmigen Kasten in einer Draufsicht dargestellt. Das Substrat 17, beispielsweise aus Keramik, weist zwei halbkreisförmige Widerstandsbahnen 18, 19, eine gerade Widerstandsbahn 20 und zwei Leiterbahnen 21, 22 auf. Weiterhin sind zwei Schleifer 23 bzw. 24 vorhanden, an die die Leitungen 8 angeschlossen sind. Die halbkreisförmigen Widerstandsbahnen 18, 19 mit den zugehörigen Schleifern 23 bzw. 24 stellen die Einsteller der Einstelleranordnung dar. Die Leiterbahn 21 verbindet die Widerstandsbahn 18 mit einer als Kontaktteil 9 dienenden Lötöse, die mit dem Massepotential verbunden wird. Die Leiterbahn 22 verbindet die Widerstandsbahn 19 mit einem isolierten Draht 25, der längs des Substrates 17 verläuft und an den die Hochspannungswicklung angeschlossen wird. Dazu ist das über das das Kontaktteil 9 tragende Ende des Substrats 17 hinausragende Teil des isolierten Drahtes 25 an seinem Ende abisoliert. Der isolierte Draht weist darüberhinaus eine so hohe Steifigkeit auf, daß sein abisoliertes Ende wie die Lötöse des Kontaktteiles 9 beim Einsetzen der Einstelleranordnung 7 in die Schiebesitzführung 6 des Zeilentransformators durch die schmalen Schlitze im Isolierstoffgehäuse 1 hindurchschiebbar ist. Dabei reicht die Isolierung des Drahtes 5 bis in den Innenraum des Isolierstoffgehäuses.2 shows the adjuster arrangement 7 without its cuboid box in a plan view. The substrate 17, for example made of ceramic, has two semicircular resistance tracks 18, 19, a straight resistance track 20 and two conductor tracks 21, 22. There are also two wipers 23 and 24, to which the lines 8 are connected. The semicircular resistance tracks 18, 19 with the associated wipers 23 and 24 represent the adjusters of the adjuster arrangement. The conductor track 21 connects the resistance track 18 to a soldering lug serving as contact part 9, which is connected to the ground potential becomes. The conductor track 22 connects the resistance track 19 to an insulated wire 25, which runs along the substrate 17 and to which the high-voltage winding is connected. For this purpose, the part of the insulated wire 25 projecting beyond the end of the substrate 17 carrying the contact part 9 is stripped at its end. The insulated wire also has such a high rigidity that its stripped end, like the soldering lug of the contact part 9, can be pushed through the narrow slots in the insulating material housing 1 when the adjuster arrangement 7 is inserted into the sliding seat guide 6 of the line transformer. The insulation of the wire 5 extends into the interior of the insulating material housing.

Durch diese Ausbildung der Einstelleranordnung 7 wird eine sehr hohe Spannungsfestigkeit erreicht, ohne dabei einen komplizierten Aufbau zu schaffen. Es bleibt auch der einfache Zusammenbau der Einstelleranordnung mit dem Zeilentransformator erhalten.This configuration of the adjuster arrangement 7 achieves a very high dielectric strength without creating a complicated structure. The simple assembly of the adjuster arrangement with the line transformer is also retained.

Claims (3)

1. Zeilentransformator für Fernsehgeräte, bestehend aus wenigstens einer Primär- und einer Sekundärwicklung, die in einem Isolierstoffgehäuse angeordnet und mit einem Kunstharz vergossen sind, und einer in einem Gehäuse untergebrachten und elektrisch mit einer als Hochspannungswicklung dienenden Sekundärwicklung verbundenen und am Isolierstoffgehäuse angeordneten Einstelleranordnung, wobei das Isolierstoffgehäuse zwischen seinem Innenraum und der Einstelleranordnung eine Trennwand besitzt und die Einstelleranordnung an einem Ende mit in den Innenraum führenden Kontaktteilen versehen ist, dadurch gekennzeichnet, daß das mit der Hochspannungswicklung verbundene Kontaktteil aus einem isolierten Draht (25) besteht, der die Hochspannungswicklung direkt mit dem Einsteller (19, 24) für eine Fokusspannung verbindet.1. Line transformer for television sets, consisting of at least one primary and one secondary winding, which are arranged in an insulating housing and potted with a synthetic resin, and an accommodated in a housing and electrically connected to a secondary winding serving as a high-voltage winding and arranged on the insulating housing, whereby the insulating material housing has a partition between its interior and the adjuster arrangement and the adjuster arrangement is provided at one end with contact parts leading into the interior, characterized in that the contact part connected to the high-voltage winding consists of an insulated wire (25) which directly connects the high-voltage winding connects the adjuster (19, 24) for a focus voltage. 2. Zeilentransformator nach Anspruch 1, dadurch gekennzeichnet, daß die Isolierung des Drahtes (25) bis in den Innenraum des Isolierstoffgehäuses (1) reicht.2. Line transformer according to claim 1, characterized in that the insulation of the wire (25) extends into the interior of the insulating housing (1). 3. Zeilentransformator nach Anspruch 2, dadurch gekennzeichnet, daß der Draht (25) eine so hohe Steifigkeit aufweist, daß er durch einen Schlitz im Isolierstoffgehäuse (1) schiebbar ist.3. Line transformer according to claim 2, characterized in that the wire (25) has such a high rigidity that it can be pushed through a slot in the insulating housing (1).
EP87117337A 1986-11-28 1987-11-25 Line transformer Expired - Lifetime EP0269074B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863640732 DE3640732A1 (en) 1986-11-28 1986-11-28 LINE TRANSFORMER
DE3640732 1986-11-28

Publications (2)

Publication Number Publication Date
EP0269074A1 true EP0269074A1 (en) 1988-06-01
EP0269074B1 EP0269074B1 (en) 1992-09-30

Family

ID=6315026

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87117337A Expired - Lifetime EP0269074B1 (en) 1986-11-28 1987-11-25 Line transformer

Country Status (3)

Country Link
EP (1) EP0269074B1 (en)
JP (1) JPS63190314A (en)
DE (2) DE3640732A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0347622A2 (en) * 1988-06-23 1989-12-27 GRUNDIG E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig holländ. Stiftung & Co. KG. Switched-mode power supply combined with a horizontal deflection circuit in an image display device
EP0556633A1 (en) * 1992-02-17 1993-08-25 NOKIA TECHNOLOGY GmbH Line transformer for television receivers

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19626730A1 (en) * 1996-07-03 1998-01-08 Thomson Brandt Gmbh High voltage transformer for a television receiver

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3016989A1 (en) * 1979-05-02 1980-11-13 Hitachi Ltd HIGH VOLTAGE RECTIFIER
EP0068494A2 (en) * 1981-06-30 1983-01-05 Sanyo Electric Co., Ltd. Flyback transformer

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5820517B2 (en) * 1976-04-24 1983-04-23 富士通株式会社 Sampling control method
JPS585322B2 (en) * 1979-09-27 1983-01-31 東京工機株式会社 Asphalt plant ventilation equipment
JPS5820517U (en) * 1981-07-31 1983-02-08 三洋電機株式会社 Flyback transformer with high voltage variable resistor
JPS585322U (en) * 1981-06-30 1983-01-13 三洋電機株式会社 Flyback transformer with high voltage variable resistor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3016989A1 (en) * 1979-05-02 1980-11-13 Hitachi Ltd HIGH VOLTAGE RECTIFIER
EP0068494A2 (en) * 1981-06-30 1983-01-05 Sanyo Electric Co., Ltd. Flyback transformer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0347622A2 (en) * 1988-06-23 1989-12-27 GRUNDIG E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig holländ. Stiftung & Co. KG. Switched-mode power supply combined with a horizontal deflection circuit in an image display device
EP0347622A3 (en) * 1988-06-23 1991-11-13 GRUNDIG E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig holländ. Stiftung & Co. KG. Switched-mode power supply combined with a horizontal deflection circuit in an image display device
EP0556633A1 (en) * 1992-02-17 1993-08-25 NOKIA TECHNOLOGY GmbH Line transformer for television receivers

Also Published As

Publication number Publication date
DE3640732A1 (en) 1988-06-09
DE3782005D1 (en) 1992-11-05
EP0269074B1 (en) 1992-09-30
JPS63190314A (en) 1988-08-05
JPH0522367B2 (en) 1993-03-29

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