EP0033450A1 - Line output transformer for television receiver - Google Patents

Line output transformer for television receiver Download PDF

Info

Publication number
EP0033450A1
EP0033450A1 EP81100252A EP81100252A EP0033450A1 EP 0033450 A1 EP0033450 A1 EP 0033450A1 EP 81100252 A EP81100252 A EP 81100252A EP 81100252 A EP81100252 A EP 81100252A EP 0033450 A1 EP0033450 A1 EP 0033450A1
Authority
EP
European Patent Office
Prior art keywords
winding
voltage
transformer according
rectifier
chamber
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
EP81100252A
Other languages
German (de)
French (fr)
Other versions
EP0033450B1 (en
Inventor
Walter Dipl.-Ing. Goseberg
Alfred Pollak
Wolfgang Dipl.-Ing. Reichow
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.)
Cessione telefunken Fernseh und Rundfunk GmbH
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 AT81100252T priority Critical patent/ATE5355T1/en
Publication of EP0033450A1 publication Critical patent/EP0033450A1/en
Application granted granted Critical
Publication of EP0033450B1 publication Critical patent/EP0033450B1/en
Expired legal-status Critical Current

Links

Images

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

  • the line transformer of a television receiver uses a high-voltage winding and a high-voltage rectifier to produce, among other things.
  • the high voltage for the picture tube in the order of 25 KV. This voltage is obtained by rectifying the pulse-shaped return voltage. Because of this high pulse-shaped voltage, particularly high demands are placed on the dielectric strength of the line transformer, since such high pulse voltages can easily lead to flashovers and spray phenomena.
  • the line transformer generally contains a frame-shaped core with an air gap, with the principle of the one-leg transformer, the primary winding and the high-voltage winding being arranged one above the other on the same leg of the core.
  • Such transformers are tested with an overvoltage of 50%, so that in this case even higher pulse voltages occur, which reach the order of 40 KV over the entire high-voltage winding.
  • the invention is based on the object of designing the line transformer in such a way that the requirements for dielectric strength, in particular between the pulse-shaped voltage and the core of the transformer, can be mastered even with a narrow structure of the entire transformer.
  • the two ends of the entire high-voltage winding do not carry any pulse voltage, but are cold in terms of AC voltage.
  • One end of the high voltage winding can be directly grounded.
  • the other end of the high-voltage winding, which is connected to the anode of the picture tube, likewise does not carry any pulse voltage due to the effect of the capacitance of the picture tube, but only the direct anode voltage for the picture tube.
  • a DC voltage is, however, much less critical than a pulsed voltage with regard to the dielectric strength and the risk of arcing.
  • the high pulse voltage which inevitably occurs at the high-voltage winding, however, in the case of the invention is advantageously effective in its full amount only in the middle of the entire high-voltage winding.
  • the pulse voltage can be handled much better, because the center of the high-voltage winding is far away from the two legs of the core that depart at right angles. In the case of the invention, the unavoidable maximum pulse voltage is thus spatially moved to where it can best be mastered. In the middle of the high-voltage winding, additional constructive measures can also be provided on the winding former, which, for example, further increase the distance of the high-voltage rectifier from the core.
  • the winding body is preferably made of Makrolon. This has a much better dielectric strength than a potting compound.
  • the division of the high-voltage winding and the interposed diode leads to a forced symmetry of the high-voltage winding. This reduces the safety surcharge required for known transformers when dimensioning the diode blocking voltage.
  • the aforementioned forced symmetry in connection with the absence of AC voltage at the ends of the winding leads to minimal interference radiation from the high-voltage winding.
  • the high-voltage winding is also divided into several partial windings, between which high-voltage rectifiers are arranged. There, however, no use is made of the solution according to the invention. Rather, the end of the high-voltage winding facing the picture tube is not cold in terms of AC voltage, but still carries a pulse voltage, which is to be avoided in the present invention.
  • 1 shows the line output stage transistor 2 controlled by the line-frequency switching voltage 1, the line transformer 3 with the primary winding 4, the picture tube 9, the capacitor 8 essentially formed by the picture tube 9, the coupling capacitor 10 also used for equalizing the tangents, and the line deflection coils 11.
  • the high-voltage winding for generating the high voltage of 24 KV for the picture tube 9 is divided into two equally large partial windings 12, 13, between which the high-voltage rectifier 14 is located.
  • the mode of operation is explained with reference to FIG.
  • the lower end of the winding 13 is grounded and therefore carries neither a DC voltage nor an AC voltage. No problems can therefore arise at this end of the entire high-voltage winding.
  • the upper end of the winding 12 is also without pulse voltage due to the action of the capacitor 8, so that there is only a pure DC high voltage on the picture tube 9.
  • the DC voltage-free pulse voltage a At the upper end of the winding 13 is the DC voltage-free pulse voltage a with an amplitude of, for example, 12.5 KV. If the upper end of the winding 13 against earth leads positive pulse, so with the same winding direction of the windings 12, 13, the lower end of the winding 12 must carry a negative pulse b. Due to the action of the rectifier 14, the voltage b cannot drop below the voltage a.
  • FIG. 3 shows the frame-shaped core with the three legs 15, 16, 17.
  • the leg 15 carries the winding body 18 for the high-voltage winding designed as a chamber winding.
  • the winding body 18 contains a wall 19, the width and diameter of which are greater than those of the other chamber walls 20.
  • two rectifiers 14a and 14b are arranged in series on the outer circumference of the wall 19.
  • One end of the series connection of these two rectifiers is connected to the left part of the chamber winding, which represents the partial winding 13, and the other end of the series connection to the right part of the chamber winding, which represents the partial winding 12. It can be seen that the rectifiers 14, at which the pulse voltages a .nd b occur, now have a large distance from the legs 16, 17 and the particularly dangerous corners between the legs 16/15 and 17/15.
  • Figure 4 shows the arrangement of Figure 3 from below.
  • Figure 5 shows a chamber winding as in Figure 3.4, the However, the voltage ratios of the pulse voltage is adapted in an advantageous manner.
  • the primary winding 4 is located on the leg 15 of the line transformer 3 and above it the coil former 18 for the two windings 12, 13.
  • the windings 12, 13 are designed as chamber windings and each consist of partial windings 21, which are distributed in the chambers 22 formed by the chamber walls 20.
  • another wall 19 is provided in the middle, on the periphery of which the rectifier 14 or the series connection of the rectifiers 14a and 14b are located.
  • the chambers 22 are rounded at the bottom by a groove 30. Avoiding a sharp corner improves the dielectric strength.
  • the groove 31 on the wall 19 has an even larger radius for this purpose.
  • the thickness d of the bobbin 18 at the bottom of each chamber 22 is adapted to this fact by increasing the wall thickness d from the two ends to the center, because the pulse voltage has its maximum amplitude there.
  • the insulation between the individual partial windings 21 and the primary winding 4 or the core 15 is therefore advantageously adapted to the actual amplitude of the effective pulse voltage. In this way, a particularly strong coupling between the high-voltage winding and the primary winding 4 can be achieved. This results in a low leakage inductance and thus the advantage of matching the leakage inductance to a high harmonic of the frequency of the return vibration in order to achieve a low internal resistance of the high-voltage source.
  • the first and last chamber is not provided with a partial winding 21 and can be used for the wire infeed.
  • the individual chambers 22 are filled differently with the partial windings 21. With such a different filling, the leakage inductance and thus the tuning to a harmonic can also be influenced.
  • FIG. 6 shows a special position of the rectifier 14 on the outer circumference of the chamber wall 19.
  • the rectifier 14 is arranged obliquely to the circumferential direction of the chamber wall 19. Due to this position, the distance of the connecting wires 25 of the rectifier 14 to the following i.e. at the other end of the rectifier 14 lying chamber enlarged. It can be seen that the connecting wire 25 of the rectifier 14 is further away from the chamber 22a than if the rectifier 14 were arranged exactly in the circumferential direction of the chamber wall 19. It is precisely between the connecting wire 25 and the winding in the chamber 22a that there is the greatest risk of arcing because the voltage difference according to FIG. 2 is maximum there.
  • the rectifier 14, as in FIG. 5, is arranged offset radially outward.
  • the chamber wall 19 does not have a continuously larger diameter than the other chamber walls 20.
  • the chamber wall 19 is rather only provided with a radially directed extension 26 at the location of the rectifier 14. In the remaining area, the chamber wall 19 has the same diameter as the other chamber walls 20.
  • the rectifier 14 is preferably held on the chamber wall 19 by a fastening device, for example a snap-in connection.
  • a fastening device for example a snap-in connection.
  • the relatively rigid connecting wires of the rectifier 14 can simultaneously serve as support points for the relatively thin wire of the high-voltage winding 12.
  • the ends of the partial windings arranged in the chambers 22 become directly connected to the connecting wires of the rectifier 14. Their connecting wires thus take over the task of the pins otherwise provided on a coil former and serving as a base.
  • the primary winding 4, the high-voltage windings 12, 13 and the rectifier 14 are cast together in a cast resin block and are therefore surrounded on all sides by the resin. This creates a tension-proof and fireproof unit.
  • the resin e.g. a thermosetting epoxy resin or a polyester resin can be used.
  • the cast resin block containing the named components then has four connections, namely the connections for the primary winding 4, the output for the high voltage according to c in FIG. 1 and the output for the lower end of the winding 13, which is grounded when the transformer is installed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Details Of Television Scanning (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Television Receiver Circuits (AREA)
  • Communication Cables (AREA)
  • Details Of Television Systems (AREA)
  • Rectifiers (AREA)

Abstract

In a horizontal deflection circuit output transformer for a television receiver, which transformer includes a primary coil, a secondary coil inductively coupled to the primary coil, and a rectifier connected to the secondary coil and cooperating therewith to generate a high voltage for the picture tube, the secondary coil is divided into two partial windings and the rectifier is located physically between the partial windings.

Description

Der Zeilentransformator eines Fernsehempfängers erzeugt bekanntlich mittels einer Hochspannungswicklung und eines Hochspannungsgleichrichters u.a. die Hochspannung für die Bildröhre in der Größenordnung von 25 KV. Diese Spannung wird durch Gleichrichtung der impulsförmigen Rücklaufspannung gewonnen. Wegen dieser hohen impulsförmigen Spannung werden an die Spannungsfestigkeit des Zeilentransformators besonders hohe Anforderungen gestellt, da derart hohe Impulsspannungen leicht zu Überschlägen und Sprüherscheinungen führen können.As is known, the line transformer of a television receiver uses a high-voltage winding and a high-voltage rectifier to produce, among other things. the high voltage for the picture tube in the order of 25 KV. This voltage is obtained by rectifying the pulse-shaped return voltage. Because of this high pulse-shaped voltage, particularly high demands are placed on the dielectric strength of the line transformer, since such high pulse voltages can easily lead to flashovers and spray phenomena.

Der Zeilentransformator enthält im allgemeinen einen rahmenförmigen Kern mit einem Luftspalt, wobei bei dem Prinzip des Einschenkeltrafos die Primärwicklung und die Hochspannungswicklung übereinander auf demselben Schenkel des Kerns angeordnet sind. Dabei ist man bemüht, den Kern aus Kosten- und Gewichtsgründen möglichst klein zu bemessen. Das führt dazu, daß die Hochspannungswicklung praktisch die gesamte Länge eines Schenkels des Kerns einnimmt, d.h. bis an die von diesem Schenkel rechtwinklig abgehenden weiteren Schenkel heranreicht. Gerade an diesen Stellen, wo das Ende der Hochspannungswicklung eng an dem abgehenden Kernschenkel liegt, liegt aber auch die hohe Impulsspannung der Hochspannungswicklung. Daher gibt es besonders an dieser Stelle besondere Schwierigkeiten, die notwendige Spannungsfestigkeit zu erzielen.The line transformer generally contains a frame-shaped core with an air gap, with the principle of the one-leg transformer, the primary winding and the high-voltage winding being arranged one above the other on the same leg of the core. One tries to make the core as small as possible for reasons of cost and weight. This leads to the fact that the high-voltage winding takes up practically the entire length of one leg of the core, that is to say it extends as far as the other legs extending at right angles from this leg. Especially in those places where the end of the high voltage winding is close to the outgoing core leg, but is also the high pulse voltage of the high voltage winding. Therefore, there are particular difficulties at this point in achieving the necessary dielectric strength.

Die Prüfung derartiger Transformatoren erfolgt mit einer Überspannung von 50 %, so daß in diesem Fall noch weit höhere Impulsspannungen auftreten, die die Größenordnung von 40 KV über der gesamten Hochspannungswicklung erreichen.Such transformers are tested with an overvoltage of 50%, so that in this case even higher pulse voltages occur, which reach the order of 40 KV over the entire high-voltage winding.

Der Erfindung liegt die Aufgabe zugrunde, den Zeilentransformator so auszubilden, daß sich die Anforderungen an die Spannungsfestigkeit, insbesondere zwischen der impulsförmigen Spannung und dem Kern des Trafos, auch bei engem Aufbau des gesamten Trafos beherschen lassen.The invention is based on the object of designing the line transformer in such a way that the requirements for dielectric strength, in particular between the pulse-shaped voltage and the core of the transformer, can be mastered even with a narrow structure of the entire transformer.

Diese Aufgabe wird durch die im Anspruch 1 beschriebene Erfindung gelöst. Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen beschrieben.This object is achieved by the invention described in claim 1. Advantageous developments of the invention are described in the subclaims.

Durch die Erfindung wird in vorteilhafter Weise erreicht, daß die beiden Enden der gesamten Hochspannungswicklung keine Impulsspannung führen, sondern wechselspannungsmäßig kalt sind. Das eine Ende der Hochspannungswicklung kann direkt geerdet sein. Das andere, mit der Anode der Bildröhre verbundene Ende der Hochspannungswicklung führt durch die Wirkung der Kapazität der Bildröhre ebenfalls keine Impulsspannung, sondern nur die Anodengleichspannung für die Bildröhre. Eine Gleichspannung ist aber hinsichtlich der Spannungsfestigkeit und der Überschlagsgefahr wesentlich weniger kritisch als eine impulsförmige Spannung. Die unvermeidbar an der Hochspannungswieklung auftretende hohe Impulsspannung indessen wird bei der Erfindung in vorteilhafter Weise in ihrer vollen Höhe nur in der Mitte der gesamten Hochspannungswicklung wirksam. Dort läßt sich die Impulsspannung aber wesentlich besser beherschen, weil die Mitte der Hochspannungswicklung von den beiden rechtwinklig abgehenden Schenkeln des Kerns weit entfernt ist. Bei der Erfindung wird also die unvermeidbare maximale Impulsspannung räumlich dorthin verlegt, wo sie sich am besten beherschen läßt. In der Mitte der Hochspannungswicklung können außerdem am Wickelkörper zusätzliche konstruktive Maßnahmen vorgesehen sein, durch die z.B. der Abstand des Hochspannungsgleichrichters vom Kern noch vergrößert wird. Der Wickelkörper wird vorzugsweise aus Makrolon hergestellt. Dieserhat eine weitaus bessere Spannungsfestigkeit als eine Vergußmasse.It is advantageously achieved by the invention that the two ends of the entire high-voltage winding do not carry any pulse voltage, but are cold in terms of AC voltage. One end of the high voltage winding can be directly grounded. The other end of the high-voltage winding, which is connected to the anode of the picture tube, likewise does not carry any pulse voltage due to the effect of the capacitance of the picture tube, but only the direct anode voltage for the picture tube. A DC voltage is, however, much less critical than a pulsed voltage with regard to the dielectric strength and the risk of arcing. The high pulse voltage which inevitably occurs at the high-voltage winding, however, in the case of the invention is advantageously effective in its full amount only in the middle of the entire high-voltage winding. There, however, the pulse voltage can be handled much better, because the center of the high-voltage winding is far away from the two legs of the core that depart at right angles. In the case of the invention, the unavoidable maximum pulse voltage is thus spatially moved to where it can best be mastered. In the middle of the high-voltage winding, additional constructive measures can also be provided on the winding former, which, for example, further increase the distance of the high-voltage rectifier from the core. The winding body is preferably made of Makrolon. This has a much better dielectric strength than a potting compound.

Die Aufteilung der Hochspannungswicklung und die dazwischengeschaltete Diode führt zu einer Zwangssymmetrie der Hochspannungswicklung. Dadurch wird der ansich bei bekannten Transformatoren notwendige Sicherheitszuschlag bei der Bemessung Diodensperrspannung verringert. Die genannte Zwangssymmetrierung in Verbindung mit Wechselspannungsfreiheit der Enden der Wicklung führt zu einer minimalen Störstrahlung der Hochspannungswicklung.The division of the high-voltage winding and the interposed diode leads to a forced symmetry of the high-voltage winding. This reduces the safety surcharge required for known transformers when dimensioning the diode blocking voltage. The aforementioned forced symmetry in connection with the absence of AC voltage at the ends of the winding leads to minimal interference radiation from the high-voltage winding.

Beim sogenannten Diodensplittrafo (Funktechnik 1979 Nr. 4 Seite T 183-184) ist zwar auch die Hochspannungswicklung in mehrere Teilwicklungen aufgeteilt, zwischen denen Hochspannungsgleichrichter angeordnet sind. Dort wird aber von der erfindungsgemäßen Lösung kein Gebrauch gemacht. Vielmehr ist dort das der Bildröhre zugewandte Ende der Hochspannungswicklung wechselspannungsmäßig nicht kalt, sondern führt noch eine Impulsspannung, die bei der vorliegenden Erfindung gerade vermieden werden soll.In the so-called diode split transformer (radio technology 1979 No. 4 page T 183-184), the high-voltage winding is also divided into several partial windings, between which high-voltage rectifiers are arranged. There, however, no use is made of the solution according to the invention. Rather, the end of the high-voltage winding facing the picture tube is not cold in terms of AC voltage, but still carries a pulse voltage, which is to be avoided in the present invention.

Die Erfindung wird im folgenden anhand der Zeichnung an einem Ausführungsbeispiel erläutert.The invention is explained below with reference to the drawing using an exemplary embodiment.

Darin zeigen

  • Figur 1 ein Prinzipschaltbild der Erfindung,
  • Figur 2 Kurven zur Erläuterung der Wirkungsweise,
  • Figur 3,4 im Prinzip einen Aufbau des Wickelkörpers für die Hochspannungswicklung,
  • Figur 5 eine spezielle Ausbildung des Wickelkörpers für eine Kammerwicklung,
  • Figur 6 eine besondere geommetrische Anordnung des Gleichrichters und
  • Figur 7 eine spezielle Ausführung des Wickelkörpers zur Erzielung einer hohen Spannungsfestigkeit.
Show in it
  • FIG. 1 shows a basic circuit diagram of the invention,
  • FIG. 2 curves to explain the mode of action,
  • FIG. 3, 4, in principle, a structure of the winding body for the high-voltage winding,
  • 5 shows a special design of the winding body for a chamber winding,
  • Figure 6 shows a special geometric arrangement of the rectifier and
  • Figure 7 shows a special design of the winding body to achieve a high dielectric strength.

In Figur 1,2 zeigen die kleinen Buchstaben a-c, an welchen Punkten in Figur 1 die Spannungen gemäß Figur 2 auftreten.The small letters a-c in FIG. 1, 2 show at which points in FIG. 1 the stresses according to FIG. 2 occur.

Figur 1 zeigt den von der zeilenfrequenten Schaltspannung 1 gesteuerten Zeilenendstufentransistor 2, den Zeilentrafo 3 mit der Primärwicklung 4, die Bildröhre 9, den im wesentlichen durch die Bildröhre 9 gebildeten Kondensator 8, den auch zur Tangensentzerrung dienenden Koppelkondensator 10 sowie die Zeilenablenkspulen 11.1 shows the line output stage transistor 2 controlled by the line-frequency switching voltage 1, the line transformer 3 with the primary winding 4, the picture tube 9, the capacitor 8 essentially formed by the picture tube 9, the coupling capacitor 10 also used for equalizing the tangents, and the line deflection coils 11.

Die Hochspannungswicklung zur Erzeugung der Hochspannung von 24 KV für die Bildröhre 9 ist in zwei gleich große Teilwicklungen 12,13 aufgeteilt, zwischen denen der Hochspannungsgleichrichter 14 liegt.The high-voltage winding for generating the high voltage of 24 KV for the picture tube 9 is divided into two equally large partial windings 12, 13, between which the high-voltage rectifier 14 is located.

Anhand der Figur 2 wird die Wirkungsweise erläutert. Das untere Ende der Wicklung 13 ist geerdet und führt somit weder eine Gleichspannung noch eine Wechselspannung. An diesem Ende der gesamten Hochspannungswicklung können daher keine Probleme auftreten. Das obere Ende der Wicklung 12 ist durch die Wirkung des Kondensators 8 ebenfalls ohne Impulsspannung, so daß an der Bildröhre 9 nur eine reine Gleich-Hochspannung steht. Am oberen Ende der Wicklung 13 steht die gleichspannungsfreie Impulsspannung a mit einer Amplitude von z.B. 12,5 KV. Wenn das obere Ende der Wicklung 13 gegenüber Erde einen positiven Impuls führt, so muß bei gleicher Wicklungsrichtung der Wicklungen 12,13 das untere Ende der Wicklung 12 einen negativen Impuls b führen. Durch die Wirkung des Gleichrichters 14 kann die Spannung b nicht unter die Spannung a sinken. Das hat zur Folge, daß die Impulsspitzen der Spannung b auf die Impulsspitzen der Spannung a geklemmt werden. Am oberen Ende der Wicklung 12 entsteht dann durch die Wirkung des Kondensators 8 die reine Gleichspannung c, die die Hochspannung für die Bildröhre 9 darstellt. Es ist ersichtlich, daß die Enden der gesamten Hochspannungswicklung, d.h. das untere Ende der Wicklung 13 und das obere Ende der Wicklung 12, in vorteilhafter Weise keine Impulsspannung führen. Diese Impulsspannung liegt, wie Figur 2 zeigt, in vorteilhafter Weise nur in der Mitte der Wicklung an den beiden Enden des Gleichrichters 14.The mode of operation is explained with reference to FIG. The lower end of the winding 13 is grounded and therefore carries neither a DC voltage nor an AC voltage. No problems can therefore arise at this end of the entire high-voltage winding. The upper end of the winding 12 is also without pulse voltage due to the action of the capacitor 8, so that there is only a pure DC high voltage on the picture tube 9. At the upper end of the winding 13 is the DC voltage-free pulse voltage a with an amplitude of, for example, 12.5 KV. If the upper end of the winding 13 against earth leads positive pulse, so with the same winding direction of the windings 12, 13, the lower end of the winding 12 must carry a negative pulse b. Due to the action of the rectifier 14, the voltage b cannot drop below the voltage a. As a result, the pulse peaks of voltage b are clamped onto the pulse peaks of voltage a. At the upper end of the winding 12, the effect of the capacitor 8 then produces the pure DC voltage c, which represents the high voltage for the picture tube 9. It can be seen that the ends of the entire high-voltage winding, ie the lower end of winding 13 and the upper end of winding 12, advantageously do not carry any pulse voltage. As shown in FIG. 2, this pulse voltage is advantageously only in the middle of the winding at the two ends of the rectifier 14.

Figur 3 zeigt den rahmenförmigen Kern mit den drei Schenkeln 15,16,17. Der Schenkel 15 trägt den Wickelkörper 18 für die als Kammerwicklung ausgebildete Hochspannungswicklung. In der Mitte enthält der Wickelkörper 18 eine Wand 19, aren Breite und Durchmesser größer sind als die der übrigen Kammerwände 20. Am äußerew Umfang der Wand 19 sind aus Gründen der Spannungsfestigkeit xwei in Reihe geschaltete Gleichrichter 14a und 14b angeordnet. Das eine Ende der Reihenschaltung dieser beiden Gleichrichter ist mit dem linken Teil der Kammerwicklung verbunden, die die Teilwicklung 13 darstellt, und das andere Ende der Reihenschaltung mit dem rechten Teil der Kammerwicklung, die die Teilwicklung 12 darstellt. Es ist ersichtlich, daß die Gleichrichter 14, an denen die Impulsspannungen a .nd b auftreten, nunmehr einen großen Abstand von den Schenkeln 16,17 und den besonders gefährlichen Ecken zwischen den Schenkeln 16/15 und 17/15 aufweisen.FIG. 3 shows the frame-shaped core with the three legs 15, 16, 17. The leg 15 carries the winding body 18 for the high-voltage winding designed as a chamber winding. In the middle, the winding body 18 contains a wall 19, the width and diameter of which are greater than those of the other chamber walls 20. For reasons of dielectric strength, two rectifiers 14a and 14b are arranged in series on the outer circumference of the wall 19. One end of the series connection of these two rectifiers is connected to the left part of the chamber winding, which represents the partial winding 13, and the other end of the series connection to the right part of the chamber winding, which represents the partial winding 12. It can be seen that the rectifiers 14, at which the pulse voltages a .nd b occur, now have a large distance from the legs 16, 17 and the particularly dangerous corners between the legs 16/15 and 17/15.

Figur 4 zeigt die Anordnung nach Figur 3 von unten.Figure 4 shows the arrangement of Figure 3 from below.

Figur 5 zeigt eine Kammerwicklung wie in Figur 3,4, die jedoch den Spannungsverhältnissen der Impulsspannung in vorteilhafter Weise angepaßt ist. Auf dem Schenkel 15 des Zeilentrafos 3 befindet sich die Primärwicklung 4 und darüber der Spulenkörper 18 für die beiden Wicklungen 12,13. Die Wicklungen 12,13 sind als Kammerwicklung ausgebildet und bestehen je aus Teilwicklungen 21, die in den durch die Kammerwände 20 gebildeten Kammern 22 verteilt angeordnet sind. Wie in Figur 3,4 ist in der Mitte wieder eine weitere Wand 19 vorgesehen, an deren Umfang sich der Gleichrichter 14 oder die Reihenschaltung der Gleichrichter 14a und 14b befinden. Die Kammern 22 sind an ihrem Grund durch eine Hohlkehle 30 abgerundet. Durch die Vermeidung einer scharfen Ecke wird die Spannungsfestigkeit verbessert. Die Hohkehle 31 an der Wand 19 hat zu diesem Zweck einen noch größeren Radius.Figure 5 shows a chamber winding as in Figure 3.4, the However, the voltage ratios of the pulse voltage is adapted in an advantageous manner. The primary winding 4 is located on the leg 15 of the line transformer 3 and above it the coil former 18 for the two windings 12, 13. The windings 12, 13 are designed as chamber windings and each consist of partial windings 21, which are distributed in the chambers 22 formed by the chamber walls 20. As in FIG. 3, 4, another wall 19 is provided in the middle, on the periphery of which the rectifier 14 or the series connection of the rectifiers 14a and 14b are located. The chambers 22 are rounded at the bottom by a groove 30. Avoiding a sharp corner improves the dielectric strength. The groove 31 on the wall 19 has an even larger radius for this purpose.

Wie bereits ausgeführt, ist die-Impulsspannung am linken und rechten Ende der Gesamtwicklung null und nimmt zur Mitte hin zu. Dieser Tatsache ist die Stärke d des Spulenkörpers 18 am Grund jeweils einer Kammer 22 angepaßt, indem die Wandstärke d von den beiden Enden zur Mitte hin zunimmt, weil ja dort die Impulsspannung ihre maximale Amplitude hat. Die Isolation zwischen den einzelnen Teilwicklungen 21 und der Primärwicklung 4 bzw. dem Kern 15 ist also in vorteilhafter Weise der tatsächlichen Amplitude der wirksamen Impulsspannung angepaßt. Auf diese Weise läßt sich eine besonders feste Kopplung zwischen der Hochspannungswicklung und der Primärwicklung 4 erreichen. Dadurch ergibt sich eine geringe Streuinduktivität und somit der Vorteil, die Streuinduktivität zur Erzielung eines geringen Innenwiderstandes der Hochspannungsquelle auf eine hohe Harmonische der Frequenz der Rücklaufschwingung abzustimmen.Pulse voltage at the left and right ends of the total winding zero and takes the ball to go - as already stated, that is. The thickness d of the bobbin 18 at the bottom of each chamber 22 is adapted to this fact by increasing the wall thickness d from the two ends to the center, because the pulse voltage has its maximum amplitude there. The insulation between the individual partial windings 21 and the primary winding 4 or the core 15 is therefore advantageously adapted to the actual amplitude of the effective pulse voltage. In this way, a particularly strong coupling between the high-voltage winding and the primary winding 4 can be achieved. This results in a low leakage inductance and thus the advantage of matching the leakage inductance to a high harmonic of the frequency of the return vibration in order to achieve a low internal resistance of the high-voltage source.

Die jeweils erste und letzte Kammer ist nicht mit einer Teilwicklung 21 versehen und kann zu Einlaufzwecken für den Draht verwendet werden.The first and last chamber is not provided with a partial winding 21 and can be used for the wire infeed.

Wie Figur 5 zeigt, sind die einzelnen Kammern 22 unterschiedlich mit den Teilwicklungen 21 gefüllt. Durch eine solche unterschiedliche Füllung läßt sich die Streuinduktivität und damit die Abstimmung auf eine Harmonische ebenfalls beeinflussen.As FIG. 5 shows, the individual chambers 22 are filled differently with the partial windings 21. With such a different filling, the leakage inductance and thus the tuning to a harmonic can also be influenced.

Figur 6 zeigt eine besondere Lage des Gleichrichters 14 am äußeren Umfang der Kammerwand 19. Der Gleichrichter 14 ist schräg zur Umfangrichtung der Kammerwand 19 angeordnet. Durch diese Lage wird der Abstand der Anschlußdrähte 25 des Gleichrichters 14 zur folgenden d.h. am anderen Ende des Gleichrichters 14 liegenden Kammer vergrößert. Es ist ersichtlich, daß der Anschlußdraht 25 des Gleichrichters 14 weiter von der Kammer 22a entfernt liegt, als wenn der Gleichrichter 14 genau in Umfangrichtung der Kammerwand 19 angeordnet wäre. Gerade zwischen dem Anschlußdraht 25 und der Wicklung in der Kammer 22a besteht die größte Überschlagsgefahr, weil dort die Spannungsdifferenz gemäß Figur 2 maximal ist.FIG. 6 shows a special position of the rectifier 14 on the outer circumference of the chamber wall 19. The rectifier 14 is arranged obliquely to the circumferential direction of the chamber wall 19. Due to this position, the distance of the connecting wires 25 of the rectifier 14 to the following i.e. at the other end of the rectifier 14 lying chamber enlarged. It can be seen that the connecting wire 25 of the rectifier 14 is further away from the chamber 22a than if the rectifier 14 were arranged exactly in the circumferential direction of the chamber wall 19. It is precisely between the connecting wire 25 and the winding in the chamber 22a that there is the greatest risk of arcing because the voltage difference according to FIG. 2 is maximum there.

In Figur 7 ist zur Verbesserung der Spannungsfestigkeit der Gleichrichter 14 wie in Figur 5 radial nach außen versetzt angeordnet. Die Kammerwand 19 hat jedoch nicht einen durchgehend größeren Durchmesser als die übrigen Kammerwände 20. Die Kammerwand 19 ist vielmehr nur an der Stelle des Gleichrichters 14 mit einem radial gerichteten Ansatz 26 versehen. Im übrigen Bereich hat die Kammerwand 19 den gleichen Durchmesser wie die übrigen Kammerwände 20.In FIG. 7, to improve the dielectric strength, the rectifier 14, as in FIG. 5, is arranged offset radially outward. However, the chamber wall 19 does not have a continuously larger diameter than the other chamber walls 20. The chamber wall 19 is rather only provided with a radially directed extension 26 at the location of the rectifier 14. In the remaining area, the chamber wall 19 has the same diameter as the other chamber walls 20.

Der Gleichrichter 14 wird vorzugsweise an der Kammerwand 19 durch eine Befestigungseinrichtung, z.B. einer snap-in-Verbindung gehaltert. Bei dieser Lösung können die relativ starren Anschlußdrähte des Gleichrichters 14 gleichzeitig als Stützpunkte für den relativ dünnen Draht der Hochspannungswicklung 12 dienen. Beim Wickelvorgang werden also die Enden der in den Kammern 22 angeordneten Teilwicklungen direkt mit den Anschlußdrähten des Gleichrichters 14 verbunden. Deren Anschlußdrähte übernehmen somit die Aufgabe der sonst an einem Spulenkörper vorgesehenen, als Stützpunkt dienenden Stifte.The rectifier 14 is preferably held on the chamber wall 19 by a fastening device, for example a snap-in connection. In this solution, the relatively rigid connecting wires of the rectifier 14 can simultaneously serve as support points for the relatively thin wire of the high-voltage winding 12. During the winding process, the ends of the partial windings arranged in the chambers 22 become directly connected to the connecting wires of the rectifier 14. Their connecting wires thus take over the task of the pins otherwise provided on a coil former and serving as a base.

Die Primärwicklung 4, die Hochspannungswicklungen 12,13 und der Gleichrichter 14 sind gemeinsam in einem Gießharzblock vergossen und somit allseitig von dem Harz umgeben. Dadurch ergibt sich eine spannungsfeste und feuerfeste Einheit. Als Harz kann z.B. ein heißhärtendes Epoxidharz oder auch ein Polyesterharz verwendet werden. Der die genannten Bauteile enthaltende Gießharzblock hat dann vier Anschlüsse, nämlich die Anschlüsse für die Primärwicklung 4, den Ausgang für die Hochspannung gemäß c in Figur 1 und den Ausgang für das untere Ende der Wicklung 13, der beim Einbau des Transformators geerdet wird.The primary winding 4, the high-voltage windings 12, 13 and the rectifier 14 are cast together in a cast resin block and are therefore surrounded on all sides by the resin. This creates a tension-proof and fireproof unit. As the resin, e.g. a thermosetting epoxy resin or a polyester resin can be used. The cast resin block containing the named components then has four connections, namely the connections for the primary winding 4, the output for the high voltage according to c in FIG. 1 and the output for the lower end of the winding 13, which is grounded when the transformer is installed.

Claims (20)

1. Zeilentransformator für einen Fernsehempfänger mit einer Primärwicklung, einer Hochspannungswicklung, aus deren Impulsspannung mit einem Gleichrichter die Hochspannung für die Bildröhre erzeugt wird, dadurch gekennzeichnet, daß die Hochspannungswicklung in zwei Teilwicklungen (12, 13) aufgeteilt ist und der Gleichrichter (14) zwischen diesen Teilwicklungen liegt.1. Line transformer for a television receiver with a primary winding, a high-voltage winding, from whose pulse voltage with a rectifier the high voltage for the picture tube is generated, characterized in that the high-voltage winding is divided into two partial windings (12, 13) and the rectifier (14) between these partial windings. 2. Transformator nach Anspruch 1, dadurch gekennzeichnet, daß die beiden Teilwicklungen (12,13) gleich groß sind.2. Transformer according to claim 1, characterized in that the two partial windings (12, 13) are of the same size. 3. Transformator nach Anspruch 1, dadurch gekennzeichnet, daß zwei Gleichrichter (14a,14b) in Reihe geschaltet sind.3. Transformer according to claim 1, characterized in that two rectifiers (14a, 14b) are connected in series. 4. Transformator nach Anspruch 1, dadurch gekennzeichnet, daß bei einem rahmenförmigen Kern (15-17) auf dessen Schenkel (15) die beiden Wicklungen (4,12,13) übereinander angeordnet sind.4. Transformer according to claim 1, characterized in that in the case of a frame-shaped core (15-17) on the legs (15) of which the two windings (4, 12, 13) are arranged one above the other. 5. Transformator nach Anspruch 1, dadurch gekennzeichnet, daß der Isolationsabstand (d) zwischen der Primärwicklung (4) und den Hochspannungswicklungen (12,13) in der Mitte der Wicklungen ein Maximum hat und zu den Enden der Wicklungen hin abnimmt (Fig. 5).5. Transformer according to claim 1, characterized in that the insulation distance (d) between the primary winding (4) and the high-voltage windings (12, 13) has a maximum in the middle of the windings and decreases towards the ends of the windings (FIG. 5 ). 6. Transformator nach Anspruch 1, dadurch gekennzeichnet, daß die Hochspannungswicklung als Kammerwicklung ausgebildet ist.6. Transformer according to claim 1, characterized in that the high-voltage winding is designed as a chamber winding. 7. Transformator nach Anspruch 5 und 6, dadurch gekennzeichnet, daß die Wandstärke (d) des Spulenkörpers (18) für die Kammerwicklung am Grund der Kammer (22) jeweils vom Ende zur Mitte des Spulenkörpers (18) hin zunimmt.7. Transformer according to claim 5 and 6, characterized in that the wall thickness (d) of the coil body (18) for the chamber winding at the bottom of the chamber (22) each from Increases towards the center of the bobbin (18). 8. Transformator nach Anspruch 6, dadurch gekennzeichnet, daß jeweils die umlaufenden Kanten am Grund einer Kammer (20) hohlkehlartig (30,31) abgerundet sind.8. Transformer according to claim 6, characterized in that in each case the peripheral edges at the bottom of a chamber (20) are rounded (30, 31). 9. Transformator nach Anspruch 8, dadurch gekennzeichnet, daß die Abrundungskanten an den beiden Kanten unterschiedlich sind (30,31 in Fig. 5).9. Transformer according to claim 8, characterized in that the rounded edges on the two edges are different (30,31 in Fig. 5). 10. Transformator nach Anspruch 9, dadurch gekennzeichnet, daß an den der den Gleichrichter (14) tragenden Kammerwand (19) unmittelbar benachbarten Kammern die der Kammerwand (19) zugewandten Kante (31) den größeren Abrundungsradius aufweist.10. Transformer according to claim 9, characterized in that on the chamber wall (19) bearing the rectifier (14) immediately adjacent chambers, the chamber wall (19) facing edge (31) has the larger radius of curvature. 11. Transformator nach Anspruch 1, dadurch gekennzeichnet, daß die unter der Hochspannungswicklung liegende Primärwicklung (4) in Axialrichtung über die Hochspannungswicklung hinausragt (Fig. 5).11. Transformer according to claim 1, characterized in that the primary winding (4) lying under the high-voltage winding projects in the axial direction beyond the high-voltage winding (Fig. 5). 12. Transformator nach Anspruch 1, dadurch gekennzeichnet, daß die erste und/oder letzte Kammer nicht mit einer Teilwicklung (21) gefüllt ist (Fig. 5).12. Transformer according to claim 1, characterized in that the first and / or last chamber is not filled with a partial winding (21) (Fig. 5). 13. Transformator nach Anspruch 6, dadurch gekennzeichnet, daß die Abstimmung der Hochspannungswicklung auf eine Harmonische der Frequenz der Rücklaufschwingung durch unterschiedliche Füllung der Kammern (22) durch die Hochspannungswicklung erreicht ist.13. Transformer according to claim 6, characterized in that the tuning of the high-voltage winding to a harmonic of the frequency of the return vibration is achieved by different filling of the chambers (22) by the high-voltage winding. 14. Transformator nach Anspruch 6, dadurch gekennzeichnet, daß der Gleichrichter (14) am äußeren Umfang einer Kammerwand (19) liegt, deren Dicke und Durchmesser größer sind als die der anderen Kammerwände (20).14. Transformer according to claim 6, characterized in that the rectifier (14) on the outer circumference of a chamber wall (19), the thickness and diameter of which are greater than that of the other chamber walls (20). 15. Transformator nach Anspruch 14, dadurch gekennzeichnet, daß die Kammerwand (19) nur an der Stelle des Gleichrichters (14) eine in Radialrichtung weisende Erweiterung (26) enthält und über den übrigen Umfang den gleichen Durchmesser wie die übrigen Kammerwände (20) aufweist (Fig. 5,6).15. Transformer according to claim 14, characterized in that the chamber wall (19) only at the location of the rectifier (14) contains a radial extension (26) and has the same diameter over the remaining circumference as the other chamber walls (20) (Fig. 5,6). 16. Transformator nach Anspruch 14, dadurch gekennzeichnet, daß der Gleichrichter (14) schräg zur Umfangrichtung der Kammerwand (19) angeordnet ist (Fig. 6).16. Transformer according to claim 14, characterized in that the rectifier (14) is arranged obliquely to the circumferential direction of the chamber wall (19) (Fig. 6). 17. Transformator nach Anspruch 14, dadurch gekennzeichnet, daß die Kammerwand (19) ein Aufnahme- und Befestigungsmittel für den Gleichrichter (14) aufweist und die Drahtenden (25) der Hochspannungswicklung (12,13) direkt mit den Anschlußdrähten des Gleichrichters (14) verbunden sind.17. Transformer according to claim 14, characterized in that the chamber wall (19) has a receiving and fastening means for the rectifier (14) and the wire ends (25) of the high-voltage winding (12, 13) directly with the connecting wires of the rectifier (14) are connected. 18. Transformator nach Anspruch 6, dadurch gekennzeichnet, daß die Kammerwicklung (21) asymmetrisch gegenüber dem Kern (15) angeordnet ist und die Abstände der Wicklungsgruppen zum Kern (15) entsprechend der Spannungsbelastung optimiert sind.18. Transformer according to claim 6, characterized in that the chamber winding (21) is arranged asymmetrically with respect to the core (15) and the distances of the winding groups to the core (15) are optimized in accordance with the voltage load. 19. Transformator nach Anspruch 1, dadurch gekennzeichnet, daß auf einem freien Schenkel des Kerns (15) weitere Wicklungen wie z.B. Hilfswicklungen zur Gewinnung von Rücklaufimpulsen, angeordnet sind.19. Transformer according to claim 1, characterized in that on a free leg of the core (15) further windings such as Auxiliary windings for obtaining return pulses are arranged. 20. Transformator nachAnspruch 1, dadurch gekennzeichnet, daß die Primärwicklung (4), die Hochspannungswicklungen (12,13) und der Gleichrichter (14) gemeinsam durch ein Gießharz wie z.B. ein heiß härtendes Epoxidharz oder ein Polyesterharz vergossen sind.20. Transformer according to claim 1, characterized in that the primary winding (4), the high-voltage windings (12, 13) and the rectifier (14) together by a casting resin such as e.g. a thermosetting epoxy resin or a polyester resin is cast.
EP81100252A 1980-01-21 1981-01-15 Line output transformer for television receiver Expired EP0033450B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81100252T ATE5355T1 (en) 1980-01-21 1981-01-15 LINE TRANSFORMER FOR A TELEVISION RECEIVER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803001975 DE3001975A1 (en) 1980-01-21 1980-01-21 LINE TRANSFORMER FOR A TELEVISION RECEIVER
DE3001975 1980-01-21

Publications (2)

Publication Number Publication Date
EP0033450A1 true EP0033450A1 (en) 1981-08-12
EP0033450B1 EP0033450B1 (en) 1983-11-16

Family

ID=6092532

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81100252A Expired EP0033450B1 (en) 1980-01-21 1981-01-15 Line output transformer for television receiver

Country Status (8)

Country Link
US (1) US4406978A (en)
EP (1) EP0033450B1 (en)
JP (1) JPS56109073A (en)
AT (1) ATE5355T1 (en)
BR (1) BR8100290A (en)
DE (2) DE3001975A1 (en)
ES (1) ES498632A0 (en)
HK (1) HK103588A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3204781A1 (en) * 1981-02-12 1982-09-09 Murata Manufacturing Co., Ltd., Nagaokakyo, Kyoto End of line information
FR2606205A1 (en) * 1986-10-31 1988-05-06 Hitachi Ltd High DC voltage generating device
EP0529418A1 (en) * 1991-08-22 1993-03-03 Deutsche Thomson-Brandt GmbH Diode split high voltage transformer for a television receiver
EP0585597A2 (en) * 1992-08-04 1994-03-09 Deutsche Thomson-Brandt Gmbh High voltage line transformer for a TV receiver
EP0735552A1 (en) * 1995-03-27 1996-10-02 Deutsche Thomson-Brandt Gmbh High voltage transformer for a television receiver
FR2756967A1 (en) * 1996-12-09 1998-06-12 Thomson Television Components TRANSFORMER FOR HIGH-CUT FREQUENCY POWER SUPPLY

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4507721A (en) * 1982-07-28 1985-03-26 Nippon Telegraph & Telephone Public Corporation DC-DC Converter for remote power feeding
JPS6379615U (en) * 1986-11-14 1988-05-26
DE3733458A1 (en) * 1987-09-30 1989-04-13 Electronic Werke Deutschland Line transformer for a television receiver (television set)
DE3902219A1 (en) * 1989-01-26 1990-08-02 Electronic Werke Deutschland Compartment coil former for the high-tension transformer of a television receiver
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
DE4300624A1 (en) * 1993-01-13 1994-07-14 Thomson Brandt Gmbh HV line transformer for TV receiver
DE19543673A1 (en) * 1995-11-23 1997-05-28 Thomson Brandt Gmbh High voltage transformer for use with a TV receiver
TW369654B (en) * 1997-07-07 1999-09-11 Thomson Brandt Gmbh Diode-split high-voltage transformer
US11486736B2 (en) * 2017-07-04 2022-11-01 Daegu Gyeongbuk Institute Of Science And Technology Linear variable differential transformer

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2264451A1 (en) * 1971-11-18 1973-10-11 Matsushita Electric Ind Co Ltd HIGH VOLTAGE TRANSFORMERS ARRANGEMENT FOR HORIZONTAL DEFLECTION. REMOVAL FROM: 2256006
DE2357915A1 (en) * 1972-11-20 1974-06-06 Matsushita Electric Ind Co Ltd HIGH VOLTAGE GENERATOR
US3904928A (en) * 1973-10-10 1975-09-09 Hitachi Ltd Flyback transformer
DE2848832A1 (en) * 1978-11-11 1980-05-22 Denki Onkyo Co Ltd LINE DEFLECTION TRANSFORMER

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1129474A (en) * 1909-08-02 1915-02-23 Westinghouse Electric & Mfg Co Transformer.
CH148868A (en) * 1929-06-08 1931-08-15 Koch & Sterzel Ag High-voltage transformer with high-voltage side disc winding.
US1912389A (en) * 1931-01-26 1933-06-06 Franklin S Smith Transformer construction and art of producing the same
US2116404A (en) * 1937-03-23 1938-05-03 Gen Electric Electrical induction apparatus
US3546580A (en) * 1967-06-06 1970-12-08 North American Rockwell Magnetic field variometer using a low noise amplifier and a coil-core arrangement of minimum weight and maximum sensitivity
US3657632A (en) * 1969-10-29 1972-04-18 Matsushita Electric Ind Co Ltd Rectifying device
JPS4859330A (en) * 1971-11-29 1973-08-20
JPS5334918B2 (en) * 1974-04-20 1978-09-22
JPS50141730U (en) * 1974-05-10 1975-11-21
JPS5122578U (en) * 1974-08-07 1976-02-19
US3947749A (en) * 1975-01-31 1976-03-30 Hitachi, Ltd. Apparatus for generating high voltage for cathode-ray tube
JPS6017968Y2 (en) * 1976-08-31 1985-05-31 株式会社日立製作所 DC high pressure generator
JPS5464924U (en) * 1977-10-18 1979-05-08
US4247889A (en) * 1979-02-23 1981-01-27 Blaupunkt-Werke Gmbh High-voltage-secondary transformer, particularly television line transformer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2264451A1 (en) * 1971-11-18 1973-10-11 Matsushita Electric Ind Co Ltd HIGH VOLTAGE TRANSFORMERS ARRANGEMENT FOR HORIZONTAL DEFLECTION. REMOVAL FROM: 2256006
DE2357915A1 (en) * 1972-11-20 1974-06-06 Matsushita Electric Ind Co Ltd HIGH VOLTAGE GENERATOR
FR2207386A1 (en) * 1972-11-20 1974-06-14 Matsushita Electric Ind Co Ltd
US3904928A (en) * 1973-10-10 1975-09-09 Hitachi Ltd Flyback transformer
DE2848832A1 (en) * 1978-11-11 1980-05-22 Denki Onkyo Co Ltd LINE DEFLECTION TRANSFORMER

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3204781A1 (en) * 1981-02-12 1982-09-09 Murata Manufacturing Co., Ltd., Nagaokakyo, Kyoto End of line information
FR2606205A1 (en) * 1986-10-31 1988-05-06 Hitachi Ltd High DC voltage generating device
EP0529418A1 (en) * 1991-08-22 1993-03-03 Deutsche Thomson-Brandt GmbH Diode split high voltage transformer for a television receiver
WO1993004557A1 (en) * 1991-08-22 1993-03-04 Deutsche Thomson-Brandt Gmbh Split-configuration high-voltage diode transformer for a tv receiver
US5629589A (en) * 1991-08-22 1997-05-13 Deutsche Thomson-Brandt Gmbh Split-configuration high-voltage diode transformer for a TV receiver
EP0585597A2 (en) * 1992-08-04 1994-03-09 Deutsche Thomson-Brandt Gmbh High voltage line transformer for a TV receiver
EP0585597A3 (en) * 1992-08-04 1994-11-02 Thomson Brandt Gmbh High voltage line transformer for a TV receiver.
CN1046389C (en) * 1992-08-04 1999-11-10 德国汤姆森-勃朗特有限公司 High tension line transformer for a television receiver
EP0735552A1 (en) * 1995-03-27 1996-10-02 Deutsche Thomson-Brandt Gmbh High voltage transformer for a television receiver
FR2756967A1 (en) * 1996-12-09 1998-06-12 Thomson Television Components TRANSFORMER FOR HIGH-CUT FREQUENCY POWER SUPPLY
EP0848396A1 (en) * 1996-12-09 1998-06-17 Thomson Television Components France Transformer for switched-mode power supply
US5982263A (en) * 1996-12-09 1999-11-09 Thomson Television Components France Higher frequency switch mode transformer

Also Published As

Publication number Publication date
JPH0338792B2 (en) 1991-06-11
ES8200803A1 (en) 1981-11-16
DE3001975A1 (en) 1981-07-23
ATE5355T1 (en) 1983-12-15
JPS56109073A (en) 1981-08-29
DE3161388D1 (en) 1983-12-22
US4406978A (en) 1983-09-27
BR8100290A (en) 1981-08-04
ES498632A0 (en) 1981-11-16
EP0033450B1 (en) 1983-11-16
HK103588A (en) 1988-12-30

Similar Documents

Publication Publication Date Title
EP0033450B1 (en) Line output transformer for television receiver
DE2351130B2 (en) Flyback transformer
DE19757452A1 (en) Current converter circuit arrangement
EP0028383B1 (en) Line output transformer for television receiver
EP0193057A2 (en) Transformer for a television receiver
DE2953100C1 (en) High voltage transformation and rectifier device
EP0561839B1 (en) High-voltage transformer
DE2802507A1 (en) DEVICE INCLUDING A CAVITY RESONATOR MAGNETRON
DE902632C (en) Transformer for generating a high DC voltage from saw tooth currents
DE2640901C2 (en) High power pulse transformer
EP0253978B1 (en) Electric transformer
DE3335154A1 (en) UPGRADE TRANSFORMER MULTIPLE RECTIFIER CIRCUIT
EP0263936B1 (en) Secondary side switchable power supply device
EP0257291A1 (en) Circuit arrangement for the wiring of high power transformers
DE976395C (en) Line transformer for a circuit for deflecting the electron beam in cathode ray tubes
DE1904757C3 (en) Line output transformer with one winding for high voltage generation for television receivers
DE3050344C2 (en) High voltage transformer for a high voltage rectifier
DE2444894A1 (en) Transformer with galvanically separated primary and secondary - has mutually insulated screens on both primary and secondary
DE878983C (en) Isolation transformer for high voltages
EP0660343B1 (en) High-voltage transformer and use
DE3810314A1 (en) High-tension transformer for a television receiver
DE2439346C3 (en) Circuit arrangement in a television receiver with galvanic network separation for suppressing line-frequency interference voltages
EP0029525B1 (en) Rectifier element
EP0133465B1 (en) Noise reduction circuit for colour television receivers
DE1763364C3 (en) Transmitter of unipolar control pulses for thyristors

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LU NL SE

17P Request for examination filed

Effective date: 19810924

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO MILANO S.P.A.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 5355

Country of ref document: AT

Date of ref document: 19831215

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3161388

Country of ref document: DE

Date of ref document: 19831222

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PUE

Owner name: TELEFUNKEN FERNSEH UND RUNDFUNK GMBH

NLS Nl: assignments of ep-patents

Owner name: TELEFUNKEN FERNSEH UND RUNDFUNK GMBH TE HANNOVER,

ITPR It: changes in ownership of a european patent

Owner name: CESSIONE;TELEFUNKEN FERNSEH UND RUNDFUNK GMBH

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19910102

Year of fee payment: 11

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19910131

Year of fee payment: 11

Ref country code: CH

Payment date: 19910131

Year of fee payment: 11

REG Reference to a national code

Ref country code: LU

Ref legal event code: TP

Owner name: TELEFUNKEN FERNSEH- UND RUNDFUNK GMBH HANNOVER

Effective date: 19861120

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19911211

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19911230

Year of fee payment: 12

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19920115

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19920122

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19920124

Year of fee payment: 12

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19920131

Ref country code: CH

Effective date: 19920131

EPTA Lu: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19920526

Year of fee payment: 12

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19920801

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19930115

Ref country code: GB

Effective date: 19930115

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19930127

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19930131

BERE Be: lapsed

Owner name: TELEFUNKEN FERNSEH UND RUNDFUNK G.M.B.H.

Effective date: 19930131

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19930115

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19930930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19931001

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19940116

EUG Se: european patent has lapsed

Ref document number: 81100252.6

Effective date: 19940810