EP0291575B1 - Horizontal deflection transformer - Google Patents

Horizontal deflection transformer Download PDF

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Publication number
EP0291575B1
EP0291575B1 EP87117878A EP87117878A EP0291575B1 EP 0291575 B1 EP0291575 B1 EP 0291575B1 EP 87117878 A EP87117878 A EP 87117878A EP 87117878 A EP87117878 A EP 87117878A EP 0291575 B1 EP0291575 B1 EP 0291575B1
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EP
European Patent Office
Prior art keywords
winding
coil former
compartment
horizontal deflection
voltage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP87117878A
Other languages
German (de)
French (fr)
Other versions
EP0291575A3 (en
EP0291575A2 (en
Inventor
Klaus Neuhaus
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.)
Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH
Original Assignee
Grundig EMV Elektromechanische Versuchsanstalt Max Grundig 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 Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH filed Critical Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH
Priority to AT87117878T priority Critical patent/ATE81243T1/en
Publication of EP0291575A2 publication Critical patent/EP0291575A2/en
Publication of EP0291575A3 publication Critical patent/EP0291575A3/en
Application granted granted Critical
Publication of EP0291575B1 publication Critical patent/EP0291575B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
    • H01F27/306—Fastening or mounting coils or windings on core, casing or other support
    • 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 horizontal deflection transformer for television sets, preferably in connection with a voltage multiplication circuit, the transformer winding being divided into a primary winding and a high-voltage winding being accommodated in a plurality of winding chambers.
  • the object of the invention is therefore to design the coil structure for a horizontal deflection transformer for television sets for generating high voltage in connection with a voltage multiplication circuit of a known type so that the transformer has a simple structure, the voltage multiplication circuit with a frequency of over 20 kHz, e.g. 32 kHz works perfectly, the transformer has a lower internal resistance in the high-voltage transformer part at higher frequency than previous transformers of this type, and there is less leakage inductance between the high-voltage and primary winding.
  • the measures specified in the characterizing part of claim 1 are proposed according to the invention. Because the start or end wire of the primary winding is inserted in the groove of the chamber bobbin according to the invention and covered in an insulating manner, that is, it does not have to be guided over the outside diameter of the completely wound primary coil, a coaxially placed chamber bobbin for the high-voltage winding can be kept smaller in the inside diameter than before be achieved, whereby the more intensive coupling of primary and high-voltage winding is achieved.
  • FIG. 1 shows a horizontal deflection transformer 1 which can be used for television sets and which essentially consists of a base 2 with soldering pins 2 ⁇ and a chamber coil former 3 with inserted wire windings 4, 5 and a ferrite core 6 (not shown in more detail).
  • the windings are divided into primary windings 4 and high-voltage windings 5, and, if necessary, into a coupling winding 7, which the Primary winding is assigned.
  • the primary winding is arranged in the form of partial windings 4a, 4b, 4c, etc. on the cylindrical chamber bobbin 3, namely that each partial winding is arranged at a predetermined distance from the previous partial winding.
  • the high-voltage winding is divided into partial windings 5a, 5b, 5c, etc., and these partial windings are arranged in the spaces that result between the primary windings.
  • the base 2 and the chamber bobbin 3 for the primary and high-voltage winding with the respective separators are injection-molded in one piece from plastic.
  • the solder pins 2 ' are pressed into the base 2 in a known manner.
  • the deflection transformer is essentially completed. If necessary, the transformer can then be immersed in an insulating compound or poured out according to a predetermined shape.
  • a second embodiment according to the invention results from the coaxial application of a chamber coil former with the high-voltage windings over the primary coil former.
  • the inside diameter of the chamber coil former for the high-voltage windings can be made smaller than previously, which enables the more intensive coupling of the primary and high-voltage winding to be achieved.
  • FIG. 2 shows the cylindrical core part of the chamber bobbin 3 in section and reveals that the ferrite core 6 has a flattening inside the chamber bobbin 3. This flattening is filled by the core of the coil body 3 and a groove-shaped recess 8 is made in this material accumulation. A wire end of the primary winding is inserted into this groove-shaped recess.
  • FIG. 3 shows a possibility in which the recess 8 in the chamber bobbin 3 is covered by an insulating strip 9 for inserting the wire end of the primary winding.
  • the insulating strip 9 is injection-molded in one piece with the chamber bobbin from sufficiently elastic plastic, and is connected to it at the edge of the groove-shaped recess 8 by means of a so-called plastic film hinge. After the wire end of the primary winding has been inserted into the groove-shaped recess 8, the insulating strip 9 is inevitably pressed over the recess 8 when the windings are introduced into the different coil chambers and closes the latter, as can be seen from FIG. 3a, which represents an enlarged detail of FIG. 3 is.

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

Abstract

Horizontal deflection transformers for television sets which are used in conjunction with a circuit for voltage multiplication predominantly consist of two coil formers, pushed coaxially into one another, with separate primary winding and pushed-on high-voltage winding. Such a construction is elaborate and the pulse duration to be utilised is considerably reduced at an operating frequency of over 20 kHz, for example 32 kHz. The novel deflection transformer is intended to exhibit a simple construction and the voltage multiplication circuit should operate correctly with a frequency of, for example, 32 kHz and more. In order to use a horizontal deflection transformer for television sets for generating high voltage in conjunction with a voltage multiplication circuit at frequencies of much over 20 kHz, a particular allocation of particular winding areas of the primary winding to particular winding areas of the high-voltage winding is required. The horizontal deflection transformer having the novel winding configuration is also suitable for operating frequencies of 64 kHz in conjunction with a voltage multiplication circuit. <IMAGE>

Description

Die Erfindung bezieht sich auf einen Horizontal-Ablenktransformator für Fernsehgeräte, vorzugsweise in Verbindung mit einer Spannungsvervielfachungsschaltung, wobei die Trafowicklung in eine Primärwicklung und eine Hochvoltwicklung unterteilt in mehreren Wickelkammern untergebracht ist.The invention relates to a horizontal deflection transformer for television sets, preferably in connection with a voltage multiplication circuit, the transformer winding being divided into a primary winding and a high-voltage winding being accommodated in a plurality of winding chambers.

Es ist bekannt, in Fernsehgeräten den erforderlichen Horizontal-Ablenktransformator auch in Verbindung mit einer Schaltung zur Spannungsvervielfachung zu verwenden, und die Primärwicklung in mehreren Wickelkammern eines Spulenkörpers unterzubringen, sowie die Hochvoltwicklung über die Primärwicklung koaxial aufzuschieben. Transformatoren mit koaxial ineinandergesteckten Spulenkörpern mit entsprechend aufgebrachten Wicklungen sind aufwendig, und ein derartig aufgebauter Trafo ist bei Frequenzen die über 20 kHz liegen, z.B. bei 32 kHz und mehr mit erheblichen Nachteilen verbunden, denn die für die Hochspannungserzeugung zu nutzende Impulsdauer verringert sich bei höheren Frequenzen. Wird bei Trafos bisherigen Aufbaus die Frequenz des zur Hochspannung genutzten Impulses erhöht, so verringert sich der Stromflußwinkel unter sonst gleichen Voraussetzungen, was eine geringere Impulsdauer ergibt und eine Vergrößerung des Innenwiderstandes zur Folge hat. Das gilt auch für den dynamischen Innenwiderstand, der für das sogenannte Weißbildverhalten von besonderer Bedeutung ist.It is known to use the required horizontal deflection transformer in television sets also in connection with a circuit for voltage multiplication, and to accommodate the primary winding in several winding chambers of a coil former, and to coaxially postpone the high-voltage winding via the primary winding. Transformers with coaxially nested coil formers with correspondingly applied windings are complex, and a transformer constructed in this way is used at frequencies above 20 kHz, for example at 32 kHz and more with considerable disadvantages, because the pulse duration to be used for high voltage generation is reduced at higher frequencies. If the frequency of the pulse used for high voltage is increased in transformers up to now, the current flow angle decreases under otherwise identical conditions, which results in a shorter pulse duration and an increase in the internal resistance. This also applies to the dynamic internal resistance, which is of particular importance for the so-called white image behavior.

Die aufgeführten Nachteile können vermieden werden, wenn eine intensivere Verkopplung von Primär- und Hochvoltwicklungen erreicht werden kann, was durch eine nähere räumliche Anordnung der Primär-  und Hochvoltwicklung realisiert wird. Aus EP-A-0 071 008 ist ein Transformator in Kammerwickeltechnik bekannt, bei dem alle Teilwicklungen auf einem einzigen Kammerspulenkörper aufgebracht sind, und der eine hohe Kopplung zwischen Primär und Sekundärwicklungen aufweist, zur Anwendung als Schaltnetzteiltransformator in einem Fernsehgerät.The disadvantages listed can be avoided if a more intensive coupling of primary and high-voltage windings can be achieved, which is achieved by a closer spatial arrangement of the primary and high-voltage windings. From EP-A-0 071 008 a transformer in chamber winding technology is known in which all the partial windings are applied to a single chamber coil former and which has a high coupling between primary and secondary windings for use as a switching power supply transformer in a television set.

Aufgabe der Erfindung ist es daher, den Spulenaufbau für einen Horizontal-Ablenktransformator für Fernsehgeräte zur Erzeugung von Hochspannung in Verbindung mit einer Spannungsvervielfachungschaltung bekannter Art so zu gestalten, daß der Trafo einen einfachen Aufbau aufweist, die Spannungsvervielfachungsschaltung mit einer Frequenz von über 20 kHz, z.B. 32 kHz einwandfrei arbeitet, der Trafo gegenüber bisherigen Transformatoren dieser Art einen geringeren Innenwiderstand im Hochvolt-Trafoteil bei erhöhter Frequenz aufweist, sowie eine geringere Streuinduktivität zwischen Hochvolt- und Primärwicklung gegeben ist.The object of the invention is therefore to design the coil structure for a horizontal deflection transformer for television sets for generating high voltage in connection with a voltage multiplication circuit of a known type so that the transformer has a simple structure, the voltage multiplication circuit with a frequency of over 20 kHz, e.g. 32 kHz works perfectly, the transformer has a lower internal resistance in the high-voltage transformer part at higher frequency than previous transformers of this type, and there is less leakage inductance between the high-voltage and primary winding.

Zur Lösung der Aufgabe werden erfindungsgemäß die im kennzeichnenden Teil des Anspruchs 1 angegebenen Maßnahmen vorgeschlagen. Dadurch, daß der Anfangs- bzw. Enddraht der Primärwicklung in der erfindungsgemäßen Nut des Kammerspulenkörpers eingelegt und isolierend abgedeckt ist, also nicht über den Außendurchmesser der fertig gewickelten Primärspule geführt werden muß, kann ein koaxial aufgesetzter Kammerspulenkörper für die Hochvoltwicklung im Innendurchmesser kleiner als bisher gehalten werden, wodurch die intensivere Verkopplung von Primär- und Hochvoltwicklung erreicht wird.To achieve the object, the measures specified in the characterizing part of claim 1 are proposed according to the invention. Because the start or end wire of the primary winding is inserted in the groove of the chamber bobbin according to the invention and covered in an insulating manner, that is, it does not have to be guided over the outside diameter of the completely wound primary coil, a coaxially placed chamber bobbin for the high-voltage winding can be kept smaller in the inside diameter than before be achieved, whereby the more intensive coupling of primary and high-voltage winding is achieved.

Vorteilhafte Ausgestaltungen eines erfindungsgemäß aufgebauten Horizontal-Ablenktransformators für Fernsehgeräte ergeben sich aus den Unteransprüchen.Advantageous embodiments of a horizontal deflection transformer for television sets constructed in accordance with the invention result from the subclaims.

Ein Ausführungsbeispiel eines Horizontal-Ablenktransformators wird nachfolgend anhand der schematisch dargestellten Zeichnungen näher erläutert.An embodiment of a horizontal deflection transformer is explained in more detail below with reference to the schematically illustrated drawings.

Es zeigen:

Fig.1
eine schematisch dargestellte Draufsicht auf einen bewickelten Kammerspulenkörper mit einem Wicklungsaufbau in Form von Teilwicklungen.
Fig.2
eine Draufsicht im Schnitt auf den Kern des Kammerspulenkörpers mit eingebrachter nutförmiger Ausnehmung und
Fig.3 und 3a
eine Darstellung ähnlich der Fig.2, jedoch mit abdeckbarer nutförmiger Ausnehmung im Kern des Spulenkörpers.
Show it:
Fig. 1
a schematically illustrated top view of a wound chamber bobbin with a winding structure in the form of partial windings.
Fig. 2
a plan view in section of the core of the chamber bobbin with a groove-shaped recess and
Fig. 3 and 3a
a representation similar to Figure 2, but with a coverable groove-shaped recess in the core of the coil body.

Die Figur 1 zeigt einen für Fernsehgeräte verwendbaren Horizontal-Ablenktransformator 1 der im wesentlichen aus einem Sockel 2 mit Lötanschlußstiften 2ʹ und aus einem Kammerspulenkörper 3 mit eingebrachten Drahtwicklungen 4, 5, sowie einem nicht näher dargestellten Ferritkern 6 besteht. Die Wicklungen sind aufgeteilt in Primärwicklungen 4 und Hochvoltwicklungen 5, sowie bedarfsweise in eine Koppelwicklung 7, die der Primärwicklung zugeordnet ist. Die Primärwicklung ist in Form von Teilwicklungen 4a, 4b, 4c, usw. auf dem zylinderförmigen Kammerspulenkörper 3 angeordnet, und zwar ist jede Teilwicklung mit einem vorgegebenen Abstand an die vorhergehende Teilwicklung angereiht. Ebenso ist die Hochvoltwicklung in Teilwicklungen 5a, 5b, 5c, usw. unterteilt und diese Teilwicklungen sind in den Zwischenräumen, die sich zwischen den Primärwicklungen ergeben, angeordnet. Der Sockel 2 und der Kammerspulenkörper 3 für die Primär- und Hochvoltwicklung mit den jeweiligen Trennstegen ist einstückig aus Kunststoff gespritzt. Die Lötstifte 2' sind in bekannter Weise in den Sockel 2 eingedrückt. Nach dem Bewickeln des Kammerspulenkörpers 3 mit den verschiedenen Drahtwicklungen 4, 5, 7 sowie dem Anlöten der Drahtausführungen an die zugeordneten Lötstifte und dem Einstecken des Ferritkerns 6, ist der Ablenktransformator im wesentlichen fertiggestellt. Bedarfsweise kann der Trafo anschließend in eine Isoliermasse getaucht oder nach einer vorgegebenen Form ausgegossen werden.FIG. 1 shows a horizontal deflection transformer 1 which can be used for television sets and which essentially consists of a base 2 with soldering pins 2ʹ and a chamber coil former 3 with inserted wire windings 4, 5 and a ferrite core 6 (not shown in more detail). The windings are divided into primary windings 4 and high-voltage windings 5, and, if necessary, into a coupling winding 7, which the Primary winding is assigned. The primary winding is arranged in the form of partial windings 4a, 4b, 4c, etc. on the cylindrical chamber bobbin 3, namely that each partial winding is arranged at a predetermined distance from the previous partial winding. Likewise, the high-voltage winding is divided into partial windings 5a, 5b, 5c, etc., and these partial windings are arranged in the spaces that result between the primary windings. The base 2 and the chamber bobbin 3 for the primary and high-voltage winding with the respective separators are injection-molded in one piece from plastic. The solder pins 2 'are pressed into the base 2 in a known manner. After winding the chamber bobbin 3 with the various wire windings 4, 5, 7 and soldering the wire versions to the associated soldering pins and inserting the ferrite core 6, the deflection transformer is essentially completed. If necessary, the transformer can then be immersed in an insulating compound or poured out according to a predetermined shape.

Durch die Fig.1 ist nur eine mögliche Ausführungsform eines Horizontal-Ablenktransformators offenbart. Eine zweite, erfindungsgemäße Ausführungsform (zeichnerisch nicht dargestellt) ergibt sich durch koaxiales Aufbringen eines Kammerspulenkörpers mit den Hochvoltwicklungen über den Primär- Spulenkörper. Durch das Einlegen des Drahtendes der Primärwicklung in die erfindungsgemäße Nut kann der Innendurchmesser des Kammerspulenkörpers für die Hochvoltwicklungen kleiner als bisher ausgeführt werden, wodurch die angestrebte intensivere Verkopplung von Primär- und Hochvoltwicklung realisiert werden kann.1 shows only one possible embodiment of a horizontal deflection transformer. A second embodiment according to the invention (not shown in the drawing) results from the coaxial application of a chamber coil former with the high-voltage windings over the primary coil former. By inserting the wire end of the primary winding into the slot according to the invention, the inside diameter of the chamber coil former for the high-voltage windings can be made smaller than previously, which enables the more intensive coupling of the primary and high-voltage winding to be achieved.

Die Figur 2 zeigt den zylinderförmigen Kernteil des Kammerspulenkörpers 3 im Schnitt und läßt erkennen, daß der Ferritkern 6 im Inneren des Kammerspulenkörpers 3 eine Abflachung aufweist. Diese Abflachung wird durch den Kern des Spulenkörpers 3 ausgefüllt und in diese Materialanhäufung ist eine nutförmige Ausnehmung 8 eingebracht. In diese nutförmige Ausnehmung ist ein Drahtende der Primärwicklung eingelegt.FIG. 2 shows the cylindrical core part of the chamber bobbin 3 in section and reveals that the ferrite core 6 has a flattening inside the chamber bobbin 3. This flattening is filled by the core of the coil body 3 and a groove-shaped recess 8 is made in this material accumulation. A wire end of the primary winding is inserted into this groove-shaped recess.

Die Figur 3 zeigt eine Möglichkeit, bei der die Ausnehmung 8 im Kammerspulenkörper 3 für das Einlegen des Drahtendes der Primärwicklung durch einen Isolierstreifen 9 abgedeckt ist. Der Isolierstreifen 9 ist einstückig mit dem Kammerspulenkörper aus ausreichend elastischem Kunststoff gespritzt, und am Rande der nutförmigen Ausnehmung 8 mit diesem über ein sogenanntes Kunststoff-Filmscharnier verbunden. Nach dem Einlegen des Drahtendes der Primärwicklung in die nutförmige Ausnehmung 8 wird der Isolierstreifen 9 zwangsläufig beim Einbringen der Wicklungen in die verschiedenen Spulenkammern über die Ausnehmung 8 gedrückt und verschließt diese, wie aus der Figur 3a, die eine vergrößerte Einzelheit der Figur 3 darstellt, ersichtlich ist.FIG. 3 shows a possibility in which the recess 8 in the chamber bobbin 3 is covered by an insulating strip 9 for inserting the wire end of the primary winding. The insulating strip 9 is injection-molded in one piece with the chamber bobbin from sufficiently elastic plastic, and is connected to it at the edge of the groove-shaped recess 8 by means of a so-called plastic film hinge. After the wire end of the primary winding has been inserted into the groove-shaped recess 8, the insulating strip 9 is inevitably pressed over the recess 8 when the windings are introduced into the different coil chambers and closes the latter, as can be seen from FIG. 3a, which represents an enlarged detail of FIG. 3 is.

Claims (6)

  1. Horizontal deflection transformer for television sets, which can be operated with a voltage multiplier circuit, the transformer winding, subdivided into a primary winding and a high-voltage winding, being accommodated in a plurality of winding compartments of a cylindrical first compartment coil former or of a second compartment coil former, which is mounted coaxially on the first compartment coil former, and the first compartment coil former being designed such that the primary windings are arranged on the first compartment coil former in a plurality of part windings lined up with one another and spaced apart, and that the high-voltage winding is arranged, divided into part windings, on the second compartment coil former via the respective interspaces of the primary part windings, characterised in that the primary winding (4) is assigned a coupling winding, in that in its coil core region the first compartment coil former has a groove-shaped recess (8) which passes to all the compartments and can be covered in an insulating fashion, and in that a wire end of the primary winding is inserted into this recess (8).
  2. Horizontal deflection transformer according to Claim 1, characterised in that the recess (8) in the winding space of the compartments is covered by insulating strips (9), and in that the insulating strips (9) are injection moulded in one piece with the first compartment coil former and each individual insulating strip is connected to the latter at the edge of the respective recess via an integral hinge present there.
  3. Horizontal deflection transformer according to Claims 1 and 2, characterised in that the ferrite core (6) inserted into the cylindrical first compartment coil former has a flat, and in that the flattened region is filled up by this coil former and the groove-shaped recess (8) accommodating the wire end of the primary coil is provided in this region.
  4. Horizontal deflection transformer according to Claims 1 and 2, characterised in that the inner cylindrical coil former part of the first compartment coil former has a material reinforcement in the region of the recess (8).
  5. Horizontal deflection transformer according to one of the preceding claims, characterised in that coupling winding of the primary winding is arranged only in one compartment of the compartment coil former in conjunction with a winding tapping point designed to be separate.
  6. Horizontal deflection transformer according to one of the preceding claims, characterised in that the coupling winding of the primary winding is divided among a plurality of compartments of the first compartment coil former, and the windings are arranged between the part windings of the actual primary winding in such a way as to produce a specific assignment, prescribed in terms of position, to corresponding compartments of the high-voltage winding in conjunction in each case with winding tapping points designed to be separate.
EP87117878A 1987-05-20 1987-12-03 Horizontal deflection transformer Expired - Lifetime EP0291575B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87117878T ATE81243T1 (en) 1987-05-20 1987-12-03 HORIZONTAL DEFLECTION TRANSFORMER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873716893 DE3716893A1 (en) 1987-05-20 1987-05-20 HORIZONTAL DEFLECTION TRANSFORMER
DE3716893 1987-05-20

Publications (3)

Publication Number Publication Date
EP0291575A2 EP0291575A2 (en) 1988-11-23
EP0291575A3 EP0291575A3 (en) 1989-06-07
EP0291575B1 true EP0291575B1 (en) 1992-09-30

Family

ID=6327947

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87117878A Expired - Lifetime EP0291575B1 (en) 1987-05-20 1987-12-03 Horizontal deflection transformer

Country Status (4)

Country Link
EP (1) EP0291575B1 (en)
AT (1) ATE81243T1 (en)
DE (2) DE3716893A1 (en)
ES (1) ES2035021T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004032373A1 (en) * 2004-06-30 2006-01-26 Robert Bosch Gmbh Device for displacing drive element with electromagnetic auxiliary drive has third limit arranged between first limit and second limit, whereby pull-in coil is wound between second and third limits

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2756967B1 (en) * 1996-12-09 1999-01-08 Thomson Television Components TRANSFORMER FOR HIGH-CUT FREQUENCY POWER SUPPLY
DE19728875A1 (en) * 1997-07-07 1999-01-14 Thomson Brandt Gmbh High voltage transformer
DE19819585A1 (en) * 1998-04-30 1999-11-04 Bosch Gmbh Robert Rod coil for ignition systems

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1261950B (en) * 1963-03-30 1968-02-29 Siemens Ag Transformer for a frequency divider circuit
DE1563204C3 (en) * 1966-10-12 1973-10-31 Haddon Transformers Ltd., Ruislip, Middlesex (Grossbritannien) Welding transformer
DE3129381A1 (en) * 1981-07-25 1983-02-10 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt POWER SUPPLY TRANSFORMER, ESPECIALLY FOR A TELEVISION RECEIVER
DE3502371A1 (en) * 1985-01-25 1986-07-31 Standard Elektrik Lorenz Ag, 7000 Stuttgart Diode split line transformer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004032373A1 (en) * 2004-06-30 2006-01-26 Robert Bosch Gmbh Device for displacing drive element with electromagnetic auxiliary drive has third limit arranged between first limit and second limit, whereby pull-in coil is wound between second and third limits
DE102004032373B4 (en) 2004-06-30 2018-05-24 Seg Automotive Germany Gmbh Electromagnetic auxiliary drive and device for displacing a drive element with such an electromagnetic auxiliary drive

Also Published As

Publication number Publication date
EP0291575A3 (en) 1989-06-07
DE3716893A1 (en) 1988-12-15
DE3782049D1 (en) 1992-11-05
EP0291575A2 (en) 1988-11-23
ATE81243T1 (en) 1992-10-15
ES2035021T3 (en) 1993-04-16

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