EP0933975A2 - Ignition transformer - Google Patents

Ignition transformer Download PDF

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Publication number
EP0933975A2
EP0933975A2 EP99101907A EP99101907A EP0933975A2 EP 0933975 A2 EP0933975 A2 EP 0933975A2 EP 99101907 A EP99101907 A EP 99101907A EP 99101907 A EP99101907 A EP 99101907A EP 0933975 A2 EP0933975 A2 EP 0933975A2
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EP
European Patent Office
Prior art keywords
ignition transformer
winding
ignition
secondary winding
transformer according
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
EP99101907A
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German (de)
French (fr)
Other versions
EP0933975B1 (en
EP0933975A3 (en
Inventor
Wolfgang Daub
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Hella GmbH and Co KGaA
Original Assignee
Hella KGaA Huek and Co
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Publication of EP0933975A2 publication Critical patent/EP0933975A2/en
Publication of EP0933975A3 publication Critical patent/EP0933975A3/en
Application granted granted Critical
Publication of EP0933975B1 publication Critical patent/EP0933975B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/02—Details
    • H05B41/04—Starting switches
    • H05B41/042—Starting switches using semiconductor devices
    • 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
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
    • 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
    • H01F38/12—Ignition, e.g. for IC engines
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/02—Details
    • H05B41/04—Starting switches

Definitions

  • the invention relates to an ignition transformer for pulse ignition devices for High pressure gas discharge lamps in motor vehicles for generating a Ignition voltage that superimposes the open circuit voltage of a lamp ballast is arranged with a primary winding and one isolated therefrom Secondary winding.
  • Ignition transformers are also the insulation between the winding of a chamber and the associated winding feeds required, which is only very complex is feasible.
  • Another disadvantage is that in order to suppress high-frequency interference pulses, which generates the high pressure gas discharge lamp, additional means for radio interference suppression must be provided, which is also a require certain installation space and incur costs.
  • the secondary winding is a wire winding that is single-ply on a high-resistance soft magnetic
  • the core is arranged that the primary winding is a wire winding made of few, closely spaced turns and electrically isolated from the secondary winding is arranged, and that the ignition transformer with at least one further ignition transformer is connected such that the Add ignition voltages on the secondary side.
  • the ignition transformer according to the invention is therefore of a very simple structure and inexpensive to manufacture. Complex insulation and potting measures are not required because the ignition transformer for generating much less Ignition voltages are provided as known ignition transformers. This disadvantage can be easily compensated by the fact that the ignition transformer with (at least) another ignition transformer of the same construction is interconnected so that the generated on the secondary side Add ignition voltages.
  • Ignition transformers in an ignitor are by far their most common simpler construction, compared to known ignition transformers, in terms of Size and cost competitive.
  • the primary winding is a Is wire winding, which consists of a few, closely spaced turns and is arranged electrically insulated from the secondary winding.
  • the few close adjacent turns are preferably centered on the Secondary winding applied to a, compared to an arrangement in the Start or end area of the secondary winding, stronger coupling between To achieve primary and secondary winding.
  • the primary winding surrounds only part of the secondary winding, it has Secondary winding advantageously has a relatively high leakage inductance, whereby the Effect of a radio interference suppression choke is achieved.
  • the ignition transformer according to the invention can be made in a simple manner a commercially available and inexpensive HF (VHF) choke (or one such a model) with the simple addition of a few Wire windings are carried out as a primary winding.
  • VHF commercially available and inexpensive HF
  • the soft magnetic core as a metal powder core (Iron powder core, molybdenum permalloy powder core) to train, as such are particularly highly controllable and are therefore designed to be particularly small can be.
  • Ignition transformer is particularly low, since this disproportionately the decrease in the secondary voltage is reduced.
  • a simple one is sufficient Shrink tubing, insulating tube, an insulating film or an insulating tube between the primary winding and the secondary winding and possibly to protect the primary winding with insulation as protection against accidental contact. Expensive encapsulation measures as in known ignition transformers are against it not necessary.
  • the single figure shows the ignition transformer in cross section.
  • the ignition transformer consists of a single-core rod choke a high-resistance ferrite core (3) on which another winding (primary winding (1)) is arranged with a few closely spaced turns. Between the secondary winding (2) and the primary winding (1) are simple insulation (4), e.g. B. in the form of an insulating tube or an insulating film.
  • the ends of the secondary winding (2) are brought out axially Secondary connections (S 1, S 2) connected; the ends of the primary winding (1) recognizable as primary connections (P 1, P 2).
  • the high-resistance ferrite core (3) is approx. 30 mm long and has a diameter of approx. 6 mm.
  • the secondary winding (2) has approximately 100 turns and almost extends over the entire length of the ferrite core (3).
  • the primary winding (1) has approximately 4 Turns and is much shorter than the ferrite core (3).
  • the listed Dimensions and the number of turns are of course only exemplary.
  • the ignition transformer is used with high-pressure gas discharge lamps preferably connected to another similar ignition transformer in such a way that the ignition voltages generated on the secondary side add up.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

The wire wound secondary (2) is single-layered on a high-resistance, low retentivity core (3). The wire-wound primary (1) comprises a small number of close turns, insulated from the secondary. The ignition transformer is interconnected with a further ignition transformer, secondary voltages being additive.

Description

Die Erfindung betrifft einen Zündtransformator für Impulszündgeräte für Hochdruckgasentladungslampen in Kraftfahrzeugen zur Erzeugung einer Zündspannung, die der Leerlaufspannung eines Lampenvorschaltgerätes überlagert ist, mit einer Primärwicklung und einer davon isoliert angeordneten Sekundärwicklung.The invention relates to an ignition transformer for pulse ignition devices for High pressure gas discharge lamps in motor vehicles for generating a Ignition voltage that superimposes the open circuit voltage of a lamp ballast is arranged with a primary winding and one isolated therefrom Secondary winding.

Zur Zündung von kraftfahrzeugtypischen Hochdruckgasentladungslampen (z. B. der D2-Lampe von Philips) werden Spannungen von U > 23 kV benötigt, die durch Zündtransformatoren erzeugt werden.For the ignition of high pressure gas discharge lamps typical of motor vehicles (e.g. the D2 lamp from Philips) voltages of U> 23 kV are required, which are caused by Ignition transformers are generated.

Aus der DE 41 17 288 A1 ist ein Zündübertrager auf einem Stabkern und mit einem Folienwickel bekannt. Bei einer anderen möglichen Bauform eines Zündtransformators ist die Sekundärwicklung als Drahtwickel in voneinander isolierten Kammern angeordnet.From DE 41 17 288 A1 is an ignition transformer on a rod core and with one Film wrap known. With another possible design one Ignition transformer is the secondary winding as a wire winding in each other insulated chambers arranged.

Um die Hochspannungsfestigkeit solcher Zündtransformatoren zu gewährleisten, sind diese zumindest zu vergießen. Bei den kammergewickelten Zündtransformatoren ist überdies die Isolierung zwischen dem Wickel einer Kammer und den zugehörigen Wickelzuführungen erforderlich, die nur sehr aufwendig realisierbar ist.To ensure the high voltage strength of such ignition transformers, are at least to be shed. With the chamber-wound Ignition transformers are also the insulation between the winding of a chamber and the associated winding feeds required, which is only very complex is feasible.

Damit sind bekannte Zündtransformatoren relativ aufwendig aufgebaut und damit auch kostenaufwendig und zudem recht großbauend.Known ignition transformers are thus constructed in a relatively complex manner and thus also expensive and also quite large.

Nachteilig ist weiterhin, daß zur Unterdrückung von hochfrequenten Störimpulsen, welche die Hochdruckgasentladungslampe erzeugt, zusätzliche Mittel zur funktechnischen Entstörung vorgesehen werden müssen, die ebenfalls einen gewissen Einbauraum erfordem und Kosten verursachen.Another disadvantage is that in order to suppress high-frequency interference pulses, which generates the high pressure gas discharge lamp, additional means for radio interference suppression must be provided, which is also a require certain installation space and incur costs.

Da Einbauraum sowie Kosten im Kraftfahrzeugbau ganz besonders kritische Größen sind, ist es daher die Aufgabe der Erfindung, einen Zündtransformator zu schaffen, der besonders einfach, kostengünstig und kleinbauend ausführbar ist und der zusätzliche funkttechnische Entstörmittel so weit wie möglich entbehrlich macht.Because installation space and costs in motor vehicle construction are particularly critical sizes it is therefore the object of the invention to provide an ignition transformer which is particularly simple, inexpensive and small in size and which makes additional radio interference suppression as unnecessary as possible.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Sekundärwicklung eine Drahtwicklung ist, die einlagig auf einem hochohmigen weichmagnetischen Kern angeordnet ist, daß die Primärwicklung eine Drahtwicklung ist, die aus wenigen, dicht beieinanderliegenden Windungen besteht und elektrisch isoliert von der Sekundärwicklung angeordnet ist, und daß der Zündtransformator mit mindestens einem weiteren Zündtransformator derart verschaltet ist, daß sich die sekundärseitigen Zündspannungen addieren.This object is achieved in that the secondary winding is a wire winding that is single-ply on a high-resistance soft magnetic The core is arranged that the primary winding is a wire winding made of few, closely spaced turns and electrically isolated from the secondary winding is arranged, and that the ignition transformer with at least one further ignition transformer is connected such that the Add ignition voltages on the secondary side.

Der erfindungsgemäße Zündtransformator ist damit sehr einfach aufgebaut und kostengünstig herstellbar. Aufwendige Isolations- und Vergußmaßnahmen sind nicht erforderlich, da der Zündtransformator zur Erzeugung weitaus geringerer Zündspannungen vorgesehen ist als bekannte Zündtransformatoren. Dieser Nachteil kann aber dadurch leicht ausgeglichen werden, daß der Zündtransformator mit (mindestens) einem weiteren gleichartig aufgebauten Zündtransformator so miteinander verschaltet wird, daß sich deren sekundärseitig erzeugte Zündspannungen addieren.The ignition transformer according to the invention is therefore of a very simple structure and inexpensive to manufacture. Complex insulation and potting measures are not required because the ignition transformer for generating much less Ignition voltages are provided as known ignition transformers. This disadvantage can be easily compensated by the fact that the ignition transformer with (at least) another ignition transformer of the same construction is interconnected so that the generated on the secondary side Add ignition voltages.

Auch bei Verwendung von zwei oder mehreren erfindungsgemäß aufgebauten Zündtransformatoren in einem Zündgerät sind diese aufgrund ihres weitaus einfacheren Aufbaues, verglichen mit bekannten Zündtransformatoren, hinsichtlich Baugröße und Kostenaufwand konkurrenzfähig. Even when using two or more constructed according to the invention Ignition transformers in an ignitor are by far their most common simpler construction, compared to known ignition transformers, in terms of Size and cost competitive.

Dies gilt um so mehr, als der erfindungsgemäße Zündtransformator den Einsatz zusätzlicher funktechnischer Entstörmittel verzichtbar macht, so daß deren Einbauraum und Kosten eingespart werden können.This applies all the more as the ignition transformer according to the invention uses it makes additional radio interference suppression dispensable, so that their Installation space and costs can be saved.

Dies wird erfindungsgemäß dadurch möglich, daß die Primärwicklung eine Drahtwicklung ist, die aus wenigen, dicht beieinanderliegenden Windungen besteht und elektrisch isoliert von der Sekundärwicklung angeordnet ist. Die wenigen dicht beieinanderliegenden Windungen sind dabei vorzugsweise mittig auf der Sekundärwicklung aufgebracht, um eine, verglichen mit einer Anordnung im Anfangs- oder Endbereich der Sekundärwicklung, stärkere Ankopplung zwischen Primär- und Sekundärwicklung zu erreichen.This is possible according to the invention in that the primary winding is a Is wire winding, which consists of a few, closely spaced turns and is arranged electrically insulated from the secondary winding. The few close adjacent turns are preferably centered on the Secondary winding applied to a, compared to an arrangement in the Start or end area of the secondary winding, stronger coupling between To achieve primary and secondary winding.

Da die Primärwicklung nur einen Teil der Sekundärwicklung umgibt, besitzt die Sekundärwicklung vorteilhafterweise eine relativ hohe Streuinduktivität, wodurch die Wirkung einer Funkentstördrossel erzielt wird.Since the primary winding surrounds only part of the secondary winding, it has Secondary winding advantageously has a relatively high leakage inductance, whereby the Effect of a radio interference suppression choke is achieved.

Tatsächlich kann der erfindungsgemäße Zündtransformator auf einfache Weise aus einer handelsüblichen und kostengünstigen HF-(UKW-) Drossel (oder einem einer solchen nachempfundenen Aufbau) unter einfacher Hinzufügung einiger weniger Drahtwindungen als Primärwicklung ausgeführt werden.In fact, the ignition transformer according to the invention can be made in a simple manner a commercially available and inexpensive HF (VHF) choke (or one such a model) with the simple addition of a few Wire windings are carried out as a primary winding.

Besonders vorteilhaft ist, den hochohmigen weichmagnetischen Kern als Ferritkern auszuführen, da dieser elektrisch sehr verlustarm und außerdem kostengünstig ist.It is particularly advantageous to use the high-resistance soft magnetic core as a ferrite core to carry out, since this is very low loss and also inexpensive.

Vorteilhaft ist aber auch, den weichmagnetischen Kern als Metallpulverkern (Eisenpulverkern, Molybdän-Permalloy-Pulver-Kern) auszubilden, da solche besonders hoch ansteuerbar sind und damit besonders kleinbauend ausgeführt werden können.But it is also advantageous to use the soft magnetic core as a metal powder core (Iron powder core, molybdenum permalloy powder core) to train, as such are particularly highly controllable and are therefore designed to be particularly small can be.

Besonders vorteilhaft ist auch, daß der Isolationsaufwand des erfindungsgemäßen Zündtransformators ganz besonders gering ist, da sich dieser überproportional mit der Abnahme der Sekundärspannung verringert. Ausreichend ist, einen einfachen Schrumpfschlauch, Isolierschlauch, eine Isolierfolie oder ein Isolierröhrchen zwischen der Primärwicklung und der Sekundärwicklung vorzusehen und eventuell als Berührungsschutz auch die Primärwicklung mit einer Isolierung zu umhüllen. Kostenaufwendige Vergußmaßnahmen wie bei bekannten Zündtransformatoren sind dagegen nicht erforderlich.It is also particularly advantageous that the insulation effort of the invention Ignition transformer is particularly low, since this disproportionately the decrease in the secondary voltage is reduced. A simple one is sufficient Shrink tubing, insulating tube, an insulating film or an insulating tube between the primary winding and the secondary winding and possibly to protect the primary winding with insulation as protection against accidental contact. Expensive encapsulation measures as in known ignition transformers are against it not necessary.

Im folgenden soll ein Ausführungsbeispiel eines erfindungsgemäßen Zündtransformators anhand der Zeichnung dargestellt werden.In the following an embodiment of an inventive Ignition transformer can be shown using the drawing.

Die einzige Figur zeigt den Zündtransformator im Querschnitt.The single figure shows the ignition transformer in cross section.

Der Zündtransformator besteht aus einer einlagig gewickelten Stabkerndrossel mit einem hochohmigen Ferritkern (3), auf der eine weitere Wicklung (Primärwicklung (1)) mit wenigen dicht beieinanderliegenden Windungen angeordnet ist. Zwischen der Sekundärwicklung (2) und der Primärwicklung (1) ist eine einfache Isolierung (4), z. B. in Form eines Isolierschlauches oder einer Isolierfolie, vorgesehen.The ignition transformer consists of a single-core rod choke a high-resistance ferrite core (3) on which another winding (primary winding (1)) is arranged with a few closely spaced turns. Between the secondary winding (2) and the primary winding (1) are simple insulation (4), e.g. B. in the form of an insulating tube or an insulating film.

Die Enden der Sekundärwicklung (2) sind mit den axial herausgeführten Sekundäranschlüssen (S 1, S 2) verbunden; die Enden der Primärwicklung (1) sind als Primäranschlüsse (P 1, P 2) erkennbar.The ends of the secondary winding (2) are brought out axially Secondary connections (S 1, S 2) connected; the ends of the primary winding (1) recognizable as primary connections (P 1, P 2).

Der hochohmige Ferritkern (3) ist ca. 30 mm lang und hat einen Durchmesser von ca. 6 mm. Die Sekundärwicklung (2) hat ca. 100 Windungen und erstreckt sich fast über die ganze Länge des Ferritkerns (3). Die Primärwicklung (1) weist ca. 4 Windungen auf und ist sehr viel kürzer als der Ferritkern (3). Die angeführten Abmessungen sowie die Windungszahlen sind selbstverständlich nur beispielhaft.The high-resistance ferrite core (3) is approx. 30 mm long and has a diameter of approx. 6 mm. The secondary winding (2) has approximately 100 turns and almost extends over the entire length of the ferrite core (3). The primary winding (1) has approximately 4 Turns and is much shorter than the ferrite core (3). The listed Dimensions and the number of turns are of course only exemplary.

Zur Erzielung einer ausreichend hohen Zündspannung für in Kraftfahrzeugen verwendete Hochdruckgasentladungslampen wird der Zündtransformator mit vorzugsweise einem weiteren gleichartigen Zündtransformator derart verschaltet, daß sich die sekundärseitig erzeugten Zündspannungen addieren. To achieve a sufficiently high ignition voltage for motor vehicles The ignition transformer is used with high-pressure gas discharge lamps preferably connected to another similar ignition transformer in such a way that the ignition voltages generated on the secondary side add up.

BezugszeichenlisteReference list

Zündtransformator

1
Primärwicklung
2
Sekundärwicklung
3
hochohmiger weichmagnetischer Kern (Ferritkern)
4
Isolierung
P 1, P 2
Primäranschlüsse
S 1, S 2
Sekundäranschlüsse
Ignition transformer
1
Primary winding
2nd
Secondary winding
3rd
high-resistance soft magnetic core (ferrite core)
4th
insulation
P 1, P 2
Primary connections
S 1, S 2
Secondary connections

Claims (7)

Zündtransformator für Impulszündgeräte für Hochdruckgasentladungslampen in Kraftfahrzeugen zur Erzeugung einer Zündspannung, die der Leerlaufspannung eines Lampenvorschaltgerätes überlagert ist, mit einer Primärwicklung und einer davon isoliert angeordneten Sekundärwicklung, dadurch gekennzeichnet, daß die Sekundärwicklung (2) eine Drahtwicklung ist, die einlagig auf einem hochohmigen weichmagnetischen Kern (3) angeordnet ist, daß die Primärwicklung (1) eine Drahtwicklung ist, die aus wenigen, dicht beieinanderliegenden Windungen besteht und elektrisch isoliert von der Sekundärwicklung angeordnet ist, und daß der Zündtransformator mit mindestens einem weiteren Zündtransformator derart verschaltet ist, daß sich die sekundärseitigen Zündspannungen addieren.Ignition transformer for pulse igniters for high pressure gas discharge lamps in Motor vehicles to generate an ignition voltage that the open circuit voltage a lamp ballast is superimposed with a primary winding and secondary winding insulated therefrom, characterized in that the secondary winding (2) is a wire winding that is single-layer on one high-resistance soft magnetic core (3) is arranged that the Primary winding (1) is a wire winding that consists of a few, tight there are adjacent turns and electrically isolated from the Secondary winding is arranged, and that the ignition transformer with at least one further ignition transformer is connected in such a way that add the ignition voltages on the secondary side. Zündtransformator nach Anspruch 1, dadurch gekennzeichnet, daß die Primärwicklung (1) mittig auf der Sekundärwicklung (2) angeordnet ist.Ignition transformer according to claim 1, characterized in that the Primary winding (1) is arranged centrally on the secondary winding (2). Zündtransformator nach Anspruch 1, dadurch gekennzeichnet, daß die Isolierung (4) zwischen der Primärwicklung (1) und der Sekundärwicklung (2) ein Schrumpfschlauch, ein Isolierschlauch, eine Isolierfolie oder ein Isolierröhrchen ist.Ignition transformer according to claim 1, characterized in that the Insulation (4) between the primary winding (1) and the secondary winding (2) a shrink tube, an insulating tube, an insulating film or a Insulation tube is. Zündtransformator nach Anspruch 1, dadurch gekennzeichnet, daß die Primärwicklung mit einer Isolierung umhüllt ist.Ignition transformer according to claim 1, characterized in that the Primary winding is covered with insulation. Zündtransformator nach Anspruch 1, dadurch gekennzeichnet, daß die Sekundärwicklung (2) und der hochohmige weichmagnetische Kern (3) durch eine handelsübliche UKW-Drossel ausgebildet wird. Ignition transformer according to claim 1, characterized in that the Secondary winding (2) and the high-resistance soft magnetic core (3) through a commercial VHF choke is designed. Zündtransformator nach Anspruch 1, dadurch gekennzeichnet, daß der hochohmige weichmagnetische Kern (3) ein Ferritkern ist.Ignition transformer according to claim 1, characterized in that the high-resistance soft magnetic core (3) is a ferrite core. Zündtransformator nach Anspruch 1, dadurch gekennzeichnet, daß der hochohmige weichmagnetische Kern (3) ein Metallpulverkern ist.Ignition transformer according to claim 1, characterized in that the high-resistance soft magnetic core (3) is a metal powder core.
EP99101907A 1998-01-31 1999-01-29 Arrangement of two ignition transformers Expired - Lifetime EP0933975B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803856A DE19803856A1 (en) 1998-01-31 1998-01-31 Ignition transformer
DE19803856 1998-01-31

Publications (3)

Publication Number Publication Date
EP0933975A2 true EP0933975A2 (en) 1999-08-04
EP0933975A3 EP0933975A3 (en) 2000-11-02
EP0933975B1 EP0933975B1 (en) 2002-09-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP99101907A Expired - Lifetime EP0933975B1 (en) 1998-01-31 1999-01-29 Arrangement of two ignition transformers

Country Status (4)

Country Link
EP (1) EP0933975B1 (en)
AT (1) ATE224633T1 (en)
DE (2) DE19803856A1 (en)
ES (1) ES2184359T3 (en)

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EP1496526A2 (en) * 2003-07-09 2005-01-12 Power Integrations, Inc. Method and apparatus for transferring energy in a power converter circuit

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US5036256A (en) * 1990-06-21 1991-07-30 Gte Products Corporation Arc discharge ballast suitable for automotive applications
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DE29811368U1 (en) * 1998-06-28 1998-09-24 Niggemeyer, Gert Günther, Ing.(grad.), 21244 Buchholz Ignition pulse transformer for ballasts for gas discharge lamps
WO1998053647A1 (en) * 1997-05-21 1998-11-26 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Ignition device for a discharge lamp and method for igniting a discharge lamp
EP0891123A1 (en) * 1997-07-11 1999-01-13 MAGNETI MARELLI S.p.A. A device for operating a gas-discharge lamp, particularly for motor vehicles

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US5036256A (en) * 1990-06-21 1991-07-30 Gte Products Corporation Arc discharge ballast suitable for automotive applications
DE4117288A1 (en) * 1991-05-27 1992-12-03 Hella Kg Hueck & Co HIGH VOLTAGE IGNITION TRANSMITTER FOR IGNITING AND OPERATING AC HIGH PRESSURE GAS DISCHARGE LAMPS IN MOTOR VEHICLES
JPH06196336A (en) * 1991-11-29 1994-07-15 Matsushita Electric Works Ltd High voltage pulse transformer
DE19521070A1 (en) * 1994-06-15 1995-12-21 Nippon Denso Co HV transformer and discharge-lamp circuit for vehicle head-light
DE19610388A1 (en) * 1996-03-16 1997-09-18 Bosch Gmbh Robert Ignition device e.g. for discharge lamp of motor vehicle
WO1998053647A1 (en) * 1997-05-21 1998-11-26 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Ignition device for a discharge lamp and method for igniting a discharge lamp
EP0891123A1 (en) * 1997-07-11 1999-01-13 MAGNETI MARELLI S.p.A. A device for operating a gas-discharge lamp, particularly for motor vehicles
DE29811368U1 (en) * 1998-06-28 1998-09-24 Niggemeyer, Gert Günther, Ing.(grad.), 21244 Buchholz Ignition pulse transformer for ballasts for gas discharge lamps

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* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 018, no. 545 (E-1617), 18. Oktober 1994 (1994-10-18) & JP 06 196336 A (MATSUSHITA ELECTRIC WORKS LTD), 15. Juli 1994 (1994-07-15) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1496526A2 (en) * 2003-07-09 2005-01-12 Power Integrations, Inc. Method and apparatus for transferring energy in a power converter circuit
EP1496526A3 (en) * 2003-07-09 2010-02-24 Power Integrations, Inc. Method and apparatus for transferring energy in a power converter circuit
US7924132B2 (en) 2003-07-09 2011-04-12 Power Integrations, Inc. Method and apparatus for transferring energy in a power converter circuit

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DE59902708D1 (en) 2002-10-24
EP0933975B1 (en) 2002-09-18
ES2184359T3 (en) 2003-04-01
ATE224633T1 (en) 2002-10-15
EP0933975A3 (en) 2000-11-02
DE19803856A1 (en) 1999-08-05

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