EP2116111A1 - High-voltage pulse generator and high-pressure discharge lamp comprising such a generator - Google Patents

High-voltage pulse generator and high-pressure discharge lamp comprising such a generator

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Publication number
EP2116111A1
EP2116111A1 EP08717396A EP08717396A EP2116111A1 EP 2116111 A1 EP2116111 A1 EP 2116111A1 EP 08717396 A EP08717396 A EP 08717396A EP 08717396 A EP08717396 A EP 08717396A EP 2116111 A1 EP2116111 A1 EP 2116111A1
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EP
European Patent Office
Prior art keywords
pulse generator
pressure discharge
spiral
discharge lamp
voltage
Prior art date
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Granted
Application number
EP08717396A
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German (de)
French (fr)
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EP2116111B1 (en
Inventor
Andreas Kloss
Bernhard Schalk
Steffen Walter
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Osram GmbH
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Osram GmbH
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Publication of EP2116111A1 publication Critical patent/EP2116111A1/en
Application granted granted Critical
Publication of EP2116111B1 publication Critical patent/EP2116111B1/en
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Classifications

    • 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

Definitions

  • the invention relates to a high-voltage pulse generator according to the preamble of claim 1.
  • Such generators can be used in particular for the ignition of high-pressure discharge lamps for general lighting or for photo-optical purposes or for motor vehicles.
  • the invention further relates to a high-pressure discharge lamp with such a generator.
  • the object of the present invention is to provide a spiral pulse generator which can be used as a high temperature resistant transformer.
  • a further object is to provide a high-pressure discharge lamp whose ignition behavior is significantly improved compared to previous lamps and in which no damage due to the high voltage is to be feared.
  • the second conductor only a few turns, while the first conductor has the usual number of turns, such as 20 to 100.
  • the spiral pulse generator acts as a high temperature resistant transformer.
  • This transformer works in a similar way to an integrated Saving Transformer in that the second conductor acts as a capacitor and thus acts as a charging capacitor for the transformer.
  • the generator can also be designed with only one conductor winding with three contacts as a real economy transformer.
  • LTCC component or HTCC component.
  • This material is a special ceramic that can be made temperature resistant to 600 0 C.
  • LTCC has already been used in connection with lamps, see US 2003/0001519 and US Pat. No. B 6,853,151. However, it has been used for quite different purposes in lamps that are practically barely exposed to temperature, with typical temperatures below 100 ° C.
  • the spiral pulse generator is a component that combines the characteristics of a capacitor with those of a waveguide to produce ignition pulses with a voltage of at least 1.5 kV.
  • Two ceramic "green films" with metallic conductive paste are used for the production printed and then added to a spiral wound and finally isostatically pressed into a molding.
  • the following co-sintering of metal paste and ceramic foil takes place in air in the temperature range between 800 and 900 ° C. This processing allows a range of application of the spiral pulse generator up to 700 ° C. temperature load.
  • the spiral pulse generator can be accommodated in the immediate vicinity of the discharge vessel in the outer bulb, but also in the base or in the immediate vicinity of the lamp.
  • spiral pulse generator can also be used for other applications, because it is not only high temperature stable, but also extremely compact.
  • the spiral pulse generator is designed as an LTCC component consisting of ceramic foils and metallic conductive paste.
  • the spiral should have at least 5 turns.
  • an ignition unit which furthermore comprises at least one charging resistor and a switch.
  • the switch can be a spark gap or a Diac in SiC technology.
  • a spiral pulse generator can be dimensioned such that the high-voltage pulse even enables hot re-ignition of the lamp.
  • a very compact design of the spiral pulse generator is possible, so that an installation in commercial outer bulb of high-pressure discharge lamps succeed.
  • the generated high voltage pulse represents a comparatively large energy available, which facilitates the transition to self-discharge after successful breakdown.
  • the large pulse width also facilitates the breakdown in the discharge volume.
  • any conventional glass can be used, ie in particular tempered glass, Vycor or quartz glass.
  • the choice of filling is subject to no particular restriction.
  • Fig. 1 shows the basic structure of a spiral pulse generator as already known
  • Fig. 2 shows the basic structure of a spiral pulse generator with ferritic cladding
  • FIG 3 shows the basic structure of a spiral pulse generator with shortened second conductor.
  • Fig. 5 shows the basic structure of a metal halide lamp with spiral pulse generator in the outer bulb.
  • Fig. 6 shows a metal halide lamp with spiral pulse generator in the outer bulb
  • Fig. 7 is a metal halide lamp with spiral pulse generator in the base.
  • Figure 1 shows the basic structure of a spiral pulse generator 1 in plan view. It consists of a ceramic cylinder 2, in which two different metallic conductors 3 and 4 are spirally wound as a film strip.
  • the cylinder 2 is hollow inside and has a given inner diameter ID.
  • the two inner contacts 6 and 7 of the two conductors 3 and 4 are as close to each other as possible and are connected to each other via a spark gap 5.
  • the spiral pulse generator is either wound from two ceramic foils coated with metal paste or made up of two metal foils and two ceramic foils.
  • An important parameter is the number n of turns, which should preferably be in the order of 5 to 100.
  • This winding assembly is then laminated and then sintered, creating an LTCC component.
  • the thus created spiral pulse generators with capacitor property are then connected with a spark gap and a charging resistor.
  • the spark gap can occur at the inner or the outer terminals or also within the winding of the nerators are located.
  • a spark gap can preferably be used, which is temperature-stable. It is also possible to use a semiconductor switching element, preferably in SiC technology. This is suitable for temperatures above 350 0 C.
  • a ceramic foil in particular a ceramic strip such as Heratape CT 707 or preferably CT 765 or a mixture of both, in each case used by Heraeus, is preferably used as the dielectric. It has a thickness of the green film of typically 50 to 150 microns.
  • Ag conductive paste such as "Cofirable Silver", also from Heraeus, is used as the conductor.
  • a concrete example is TC 7303 from Heraeus. Good results are also provided by the metal paste 6145 from DuPont. These parts are easy to laminate and then heat out ("binder burnout") and sinter together ("co-firing").
  • the inner diameter ID of the spiral pulse generator is 10 mm.
  • the width of the individual strips is also 10 mm.
  • the film thickness is 50 ⁇ m and also the thickness of the two conductors is 50 ⁇ m in each case.
  • FIG. 2 shows a ferrite 50 in the shape of an E core, whose center bar 51 passes through the inner cavity of the generator 1.
  • FIG. 3 shows a spiral pulse generator 10 according to the invention, in which the second metallic conductor 14 is significantly shorter than the first conductor 3.
  • the contacts of the spark gap 5 can be opposite each other o- as close as possible to each other.
  • FIG. 4 shows a spiral pulse generator 20 which has only a single metallic conductor 3 at all. He now has a separate commercially available charging capacitor 10, which is connected in series with the spark gap 5. This circuit acts as a spar transformer by connecting a center tap 40 of the metallic conductor via the charging capacitor 10 and the spark gap 5 to the inner end 41 of the metallic conductor.
  • FIG. 5 shows the basic structure of a metal halide lamp 25 with integrated spiral pulse generator 21, wherein no ignition electrode is attached to the outside of the discharge vessel 22, which may be made of quartz glass or ceramic.
  • the spiral pulse generator 21 is housed with the spark gap 23 and the charging resistor 24 in the outer bulb 36.
  • FIG. 6 shows a metal halide lamp 25 with a discharge vessel 22, which is supported by two supply lines 26, 27 in an outer bulb.
  • the first lead 26 is a short-angled wire.
  • the second 27 is essentially a rod which leads to the passage 28 remote from the base.
  • an ignition unit 31 is arranged, which contains the spiral pulse generator, the spark gap and the charging resistor, as indicated in Figure 5.
  • FIG. 7 shows a metal halide lamp 25 similar to FIG. 5 with a discharge vessel 22, which is held by two supply lines 26, 27 in an outer bulb 36.
  • the first lead 26 is a short-angled wire.
  • the second 27 is essentially a rod which leads to the base-remote bushing 28.
  • the ignition unit in the base 30 is arranged, both the spiral pulse generator 21, as well as the spark gap 23 and the charging resistor 24th
  • This technique can also be used for electrodeless lamps, where the spiral pulse generator can serve as a starting aid.
  • this compact high-voltage pulse generator is in the ignition of other devices.
  • the application is particularly advantageous in the case of so-called magic spheres, in the generation of X-ray pulses and in the generation of electron beam pulses.
  • a use in a car as a replacement for the usual ignition coils is possible.
  • the invention develops particular advantages in cooperation with high-pressure discharge lamps for car headlights, which are filled with xenon under high pressure of preferably at least 3 bar and metal halides. These are particularly difficult to ignite because of the high xenon pressure, the ignition voltage is more than 10 kV. At present an attempt is being made to accommodate the components of the ignition unit in the base. A spiral pulse generator with integrated charging resistor can be accommodated in the base of the vehicle lamp.
  • the invention has very particular advantages in conjunction with high-pressure discharge lamps which contain no mercury. Such lamps are particularly desirable for environmental reasons. It contains a suitable metal halide charge and, in particular, a noble gas such as xenon under high pressure. Because of the lack of mercury, the ignition voltage is particularly high. It is more than 20 kV. Currently trying to accommodate the components of the ignition unit in the base. A spiral pulse generator with built-in charging resistor can either be housed in the base of the mercury-free lamp or in an outer bulb of the lamp.

Landscapes

  • Discharge Lamps And Accessories Thereof (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

A high-voltage pulse generator acting as a transformer is used to start a high-pressure discharge lamp.

Description

Titel: Hochspannungspulsgenerator und Hochdruckentladungslampe mit derartigem GeneratorTitle: High voltage pulse generator and high pressure discharge lamp with such generator
Technisches GebietTechnical area
Die Erfindung geht aus von einem Hochspannungspulsgenerator gemäß dem Oberbegriff des Anspruchs 1. Derartige Generatoren lassen sich insbesondere für die Zündung von Hochdruckentladungslampen für Allgemeinbeleuchtung oder für fotooptische Zwecke oder für Kfz einsetzen. Die Erfindung betrifft weiterhin eine Hochdruckentladungslampe mit einem derartigen Generator.The invention relates to a high-voltage pulse generator according to the preamble of claim 1. Such generators can be used in particular for the ignition of high-pressure discharge lamps for general lighting or for photo-optical purposes or for motor vehicles. The invention further relates to a high-pressure discharge lamp with such a generator.
Stand der TechnikState of the art
Das Problem der Zündung von Hochdruckentladungslampen wird derzeit dadurch gelöst, dass das Zündgerät in das Vorschaltgerät integriert ist. Nachteilig daran ist, dass die Zuleitungen hochspannungsfest ausgelegt sein müssen.The problem of the ignition of high pressure discharge lamps is currently solved by the fact that the ignitor is integrated into the ballast. The disadvantage of this is that the leads must be designed high voltage resistant.
In der Vergangenheit hat es immer wieder Versuche gegeben, die Zündeinheit in die Lampe zu integrieren. Dabei wurde versucht, sie in den Sockel zu integrieren. Eine besonders effektive und hohe Pulse versprechende Zündung gelingt mittels sog. Spiral-Puls-Generatoren, siehe US-A 3 289 015. Vor längerer Zeit wurden derartige Geräte bei verschiedenen Hochdruckentladungslampen wie Metallhaloge- nidlampen oder Natriumhochdrucklampen vorgeschlagen, sie- he beispielsweise US-A 4 325 004, US-A 4 353 012. Sie konnten sich jedoch nicht durchsetzen, weil sie zum einen zu teuer sind. Zum andern ist der Vorteil, sie in den Sockel einzubauen, nicht ausreichend, da das Problem des Zuführens der Hochspannung in den Kolben bleibt. Daher steigt die Wahrscheinlichkeit für Schädigungen der Lampe, seien es Isolationsprobleme oder ein Durchbruch im Sockel, stark an. Bisher übliche Zündgeräte konnten im allgemeinen nicht über 100 0C erwärmt werden. Die erzeugte Spannung musste dann der Lampe zugeführt werden, was Leitungen und Lampenfassungen mit entsprechender Hochspannungsfestigkeit erfordert, typisch etwa 5 kV.In the past there have always been attempts to integrate the ignition unit into the lamp. They tried to integrate them into the socket. A particularly effective and high pulse-promising ignition succeeds by means of so-called spiral pulse generators, see US Pat. No. 3,289,015. Long ago, such devices were proposed in various high-pressure discharge lamps, such as metal halide lamps or high-pressure sodium lamps, see, for example, US Pat 4 325 004, US-A 4 353 012. However, they could not prevail because they are too expensive. On the other hand, the advantage of installing them in the socket is not sufficient because the problem of supplying the high voltage to the piston remains. Therefore the likelihood of damage to the lamp, whether insulation problems or a breakthrough in the socket, increases sharply. Previously common igniters could not be heated above 100 0 C in general. The voltage generated then had to be fed to the lamp, which requires leads and lampholders with appropriate high voltage resistance, typically about 5 kV.
Zur Erzeugung besonders hoher Spannungen kann ein Doppel- Generator verwendet werden, siehe US-A 4 608 521.To generate particularly high voltages, a double generator can be used, see US Pat. No. 4,608,521.
Darstellung der ErfindungPresentation of the invention
Die Aufgabe der vorliegenden Erfindung ist es, einen Spiralpulsgenerator anzugeben, der als hochtemperaturfester Transformator genutzt werden kann.The object of the present invention is to provide a spiral pulse generator which can be used as a high temperature resistant transformer.
Diese Aufgabe wird gelöst durch die kennzeichnenden Merkmale des Anspruchs 1.This object is achieved by the characterizing features of claim 1.
Eine weitere Aufgabe ist es, eine Hochdruckentladungslampe bereitzustellen, deren Zündverhalten gegenüber bisherigen Lampen deutlich verbessert ist und bei der keine Schädigung infolge der Hochspannung zu befürchten ist. Dies gilt insbesondere für Metallhalogenidlampen, wobei das Material des Entladungsgefäßes entweder Quarzglas o- der Keramik sein kann.A further object is to provide a high-pressure discharge lamp whose ignition behavior is significantly improved compared to previous lamps and in which no damage due to the high voltage is to be feared. This applies in particular to metal halide lamps, it being possible for the material of the discharge vessel to be either quartz glass or ceramic.
Diese Aufgabe wird gelöst durch die kennzeichnenden Merkmale des Anspruchs 10.This object is achieved by the characterizing features of claim 10.
Besonders vorteilhafte Ausgestaltungen finden sich in den abhängigen Ansprüchen. Aus der DE-Az 102005061832.4 und 102005061831.6 ist ein kompakter Hochspannungspulsgenerator bekannt, der hohe Spannungen über 15 kV erzeugen kann. Dabei bestehen die Spiralpulsgeneratoren im allgemeinen aus zwei etwa gleich langen als Spirale aufgewickelten Leitern, siehe Figur 1. Das bedeutet, dass jeder Leiter in etwa gleich viele Windungen besitzt. Ein solcher Aufbau ist erforderlich um das Vektorinversionsprinzip zu nutzen.Particularly advantageous embodiments can be found in the dependent claims. From DE-Az 102005061832.4 and 102005061831.6 a compact high voltage pulse generator is known, which can generate high voltages above 15 kV. The spiral pulse generators generally consist of two conductors of approximately equal length wound up as a spiral, see FIG. 1. This means that each conductor has approximately the same number of turns. Such a structure is required to use the vector inversion principle.
Aus der DE-Az 102006026750.8 ist bekannt, einen Spiral- pulsgenerator zu verwenden, der von einem ferritischen Material mit einer relativen Permeabilität von μr = 1 bis 5000 umgeben ist. Auf diese drei Schriften wird ausdrücklich bezug genommen. Dabei wird immer das Prinzip ausgenutzt, dass ein infolge des Kurzschlusses in der ersten Windung fließender Strom in den restlichen Windungen einen Hochspannungspuls induziert.From DE-Az 102006026750.8 it is known to use a spiral pulse generator, which is surrounded by a ferritic material having a relative permeability of μ r = 1 to 5000. These three documents are expressly incorporated by reference. In this case, the principle is always exploited that a current flowing as a result of the short circuit in the first turn current induces a high voltage pulse in the remaining turns.
Erfindungsgemäß wird jetzt eine deutlich unterschiedliche Länge der beiden aufgewickelten Leiter verwendet. Dabei weist der zweite Leiter nur wenige Windungen auf, während der erste Leiter die übliche Zahl von Windungen wie beispielsweise 20 bis 100 aufweist. In diesem Fall wirkt der Spiralpulsgenerator als hochtemperaturfester Transformator. Dieser Transformator funktioniert ähnlich einem integrierten Spar-Transformator, indem der zweite Leiter als Kondensator wirkt und damit als Ladekondensator für den Transformator wirkt. Durch die Verkürzung der zweiten Leiterahn kann entweder die Bauform verkleinert werden oder der Transformator kann bei gleichem Volumen mit mehr Windungen ausgeführt werden, was zu einem höheren Hoch- spannungspuls führt. -A-According to the invention, a significantly different length of the two wound conductors is now used. In this case, the second conductor only a few turns, while the first conductor has the usual number of turns, such as 20 to 100. In this case, the spiral pulse generator acts as a high temperature resistant transformer. This transformer works in a similar way to an integrated Saving Transformer in that the second conductor acts as a capacitor and thus acts as a charging capacitor for the transformer. By shortening the second conductor, either the design can be reduced or the transformer can be designed with more turns at the same volume, which leads to a higher high-voltage pulse. -A-
Bei Verwendung eines separaten üblichen Ladekondensators kann der Generator auch mit nur einer Leiterwicklung mit drei Kontakten als echter Spar-Transformator ausgeführt werden .When using a separate conventional charging capacitor, the generator can also be designed with only one conductor winding with three contacts as a real economy transformer.
Der jetzt verwendete Spiral-Puls-Generator ist insbesondere ein sog. LTCC-Bauteil oder auch HTCC-Bauteil . Diese Material ist eine spezielle Keramik, die bis 600 0C Temperaturfest gemacht werden kann. Zwar wurde LTCC schon in Zusammenhang mit Lampen verwendet, siehe US 2003/0001519 und US-B 6 853 151. Jedoch wurde es für ganz andere Zwecke bei praktisch kaum temperaturbelasteten Lampen, mit typischen Temperaturen unter 100 0C, eingesetzt. Der besondere Wert der hohen Temperaturstabilität von LTCC in Zusammenhang mit der Zündung von Hochdruckentladungslam- pen, vor allem von Metallhalogenidlampen mit Zündproblemen, zu erkennen.The spiral pulse generator used now is in particular a so-called. LTCC component or HTCC component. This material is a special ceramic that can be made temperature resistant to 600 0 C. Although LTCC has already been used in connection with lamps, see US 2003/0001519 and US Pat. No. B 6,853,151. However, it has been used for quite different purposes in lamps that are practically barely exposed to temperature, with typical temperatures below 100 ° C. The particular value of the high temperature stability of LTCC in connection with the ignition of high pressure discharge lamps, especially of metal halide lamps with ignition problems.
Der Spiral-Puls-Generator ist in seiner Basisausführung ein Bauteil, das Eigenschaften eines Kondensators mit denen eines Wellenleiters zur Erzeugung von Zündpulsen mit einer Spannung von mindestens 1,5 kV vereint, Für die Herstellung werden zwei keramische "Grün-Folien" mit metallischer Leitpaste bedruckt und anschließend versetzt zu einer Spirale aufgewickelt und schließlich isostatisch zu einem Formkörper gepresst. Die folgende Co-Sinterung von Metallpaste und keramischer Folie erfolgt an Luft im Temperaturbereich zwischen 800 und 900 0C. Diese Verarbeitung erlaubt einen Einsatzbereich des Spiral-Puls- Generators bis 700 0C Temperaturbelastung. Dadurch kann der Spiral-Puls-Generator in direkter Nähe des Entla- dungsgefäßes im Außenkolben, aber auch im Sockel oder in unmittelbarer Nähe der Lampe untergebracht werden. Unabhängig davon kann ein derartiger Spiral-Puls- Generator auch für andere Anwendungen eingesetzt werden, weil er nicht nur hochtemperaturstabil ist, sondern auch äußerst kompakt. Dafür ist wesentlich, dass der Spiral- Puls-Generator als LTCC-Bauteil ausgeführt ist, bestehend aus Keramikfolien und metallischer Leitpaste. Um ausreichend Ausgangspannung zu liefern, sollte die Spirale mindestens 5 Windungen umfassen.In its basic version, the spiral pulse generator is a component that combines the characteristics of a capacitor with those of a waveguide to produce ignition pulses with a voltage of at least 1.5 kV. Two ceramic "green films" with metallic conductive paste are used for the production printed and then added to a spiral wound and finally isostatically pressed into a molding. The following co-sintering of metal paste and ceramic foil takes place in air in the temperature range between 800 and 900 ° C. This processing allows a range of application of the spiral pulse generator up to 700 ° C. temperature load. As a result, the spiral pulse generator can be accommodated in the immediate vicinity of the discharge vessel in the outer bulb, but also in the base or in the immediate vicinity of the lamp. Regardless, such a spiral pulse generator can also be used for other applications, because it is not only high temperature stable, but also extremely compact. For this it is essential that the spiral pulse generator is designed as an LTCC component consisting of ceramic foils and metallic conductive paste. To provide sufficient output voltage, the spiral should have at least 5 turns.
Zudem lässt sich auf Basis dieses Hochspannungspulsgene- rators eine Zündeinheit angeben, die weiterhin zumindest einen Ladewiderstand und einen Schalter umfasst. Der Schalter kann eine Funkenstrecke oder auch ein Diac in SiC-Technologie sein.In addition, based on this high-voltage pulse generator, an ignition unit can be specified, which furthermore comprises at least one charging resistor and a switch. The switch can be a spark gap or a Diac in SiC technology.
Bevorzugt ist im Falle einer Anwendung für Lampen die Un- terbringung im Außenkolben. Denn dadurch entfällt die Notwendigkeit einer hochspannungsfesten Spannungszuleitung.In the case of an application for lamps, preference is given to housing in the outer bulb. Because this eliminates the need for a high voltage resistant voltage supply.
Zudem lässt sich ein Spiral-Puls-Generator so dimensionieren, dass der Hochspannungspuls sogar eine Heißwieder- zündung der Lampe ermöglicht. Das Dielektrikum aus Keramik zeichnet sich durch eine außergewöhnlich hohe Dielektrizitätskonstante ε von ε > 10 aus, wobei je nach Material und Bauweise ein ε von typisch 70, bis zu ε=100 erreicht werden kann. Das schafft eine sehr hohe Kapazi- tat des Spiral-Puls-Generators und ermöglicht eine vergleichsweise große zeitliche Breite der erzeugten Impulse. Dadurch wird eine sehr kompakte Bauweise des Spiral- Puls-Generators möglich, so dass ein Einbau in handelsübliche Außenkolben von Hochdruckentladungslampen gelingt. Des weiteren stellt der erzeugte Hochspannungspuls eine vergleichsweise große Energie zur Verfügung, was nach erfolgreichem Durchschlag den Übergang zur selbstständigen Entladung erleichtert.In addition, a spiral pulse generator can be dimensioned such that the high-voltage pulse even enables hot re-ignition of the lamp. The ceramic dielectric is characterized by an exceptionally high dielectric constant ε of ε> 10, whereby, depending on the material and construction, an ε of typically 70, up to ε = 100, can be achieved. This creates a very high capacity of the spiral pulse generator and allows a comparatively long time width of the generated pulses. As a result, a very compact design of the spiral pulse generator is possible, so that an installation in commercial outer bulb of high-pressure discharge lamps succeed. Furthermore, the generated high voltage pulse represents a comparatively large energy available, which facilitates the transition to self-discharge after successful breakdown.
Die große Pulsbreite erleichtert zudem den Durchschlag im Entladungsvolumen.The large pulse width also facilitates the breakdown in the discharge volume.
Als Material des Außenkolbens einer Lampe kann jedes übliche Glas verwendet werden, also insbesondere Hartglas, Vycor oder Quarzglas. Auch die Wahl der Füllung unterliegt keiner besonderen Einschränkung.As the material of the outer bulb of a lamp, any conventional glass can be used, ie in particular tempered glass, Vycor or quartz glass. The choice of filling is subject to no particular restriction.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Im Folgenden soll die Erfindung anhand mehrerer Ausführungsbeispiele näher erläutert werden. Die Figuren zeigen :In the following, the invention will be explained in more detail with reference to several embodiments. The figures show:
Fig. 1 den prinzipiellen Aufbau eines Spiral-Puls- Generators wie bereits bekannt;Fig. 1 shows the basic structure of a spiral pulse generator as already known;
Fig. 2 den prinzipiellen Aufbau eines Spiral-Puls- Generators mit ferritischer Umhüllung;Fig. 2 shows the basic structure of a spiral pulse generator with ferritic cladding;
Fig. 3 den prinzipiellen Aufbau eines Spiral-Puls- Generators mit verkürztem zweiten Leiter ;3 shows the basic structure of a spiral pulse generator with shortened second conductor.
Fig. 4 den prinzipiellen Aufbau eines Spiral-Puls- Generators mit nur einem metallischen Leiter;4 shows the basic structure of a spiral pulse generator with only one metallic conductor;
Fig. 5 den Prinzipaufbau einer Metallhalogenidlampe mit Spiral-Puls-Generator im Außenkolben.Fig. 5 shows the basic structure of a metal halide lamp with spiral pulse generator in the outer bulb.
Fig. 6 eine Metallhalogenidlampe mit Spiral-Puls- Generator im Außenkolben; Fig. 7 eine Metallhalogenidlampe mit Spiral-Puls- Generator im Sockel.6 shows a metal halide lamp with spiral pulse generator in the outer bulb; Fig. 7 is a metal halide lamp with spiral pulse generator in the base.
Bevorzugte Ausführungsform der ErfindungPreferred embodiment of the invention
Figur 1 zeigt den prinzipiellen Aufbau eines Spiral-Puls- Generators 1 in Draufsicht. Er besteht aus einem kerami- sehen Zylinder 2, in den zwei verschiedene metallische Leiter 3 und 4 als Folienband spiralförmig eingewickelt sind. Der Zylinder 2 ist innen hohl und besitzt einen gegebenen Innendurchmesser ID. Die beiden inneren Kontakte 6 und 7 der beiden Leiter 3 und 4 liegen möglichst nahe nebeneinander und sind über eine Funkenstrecke 5 miteinander verbunden.Figure 1 shows the basic structure of a spiral pulse generator 1 in plan view. It consists of a ceramic cylinder 2, in which two different metallic conductors 3 and 4 are spirally wound as a film strip. The cylinder 2 is hollow inside and has a given inner diameter ID. The two inner contacts 6 and 7 of the two conductors 3 and 4 are as close to each other as possible and are connected to each other via a spark gap 5.
Nur der äußere der beiden Leiter besitzt am äußeren Rand des Zylinders einen weiteren Kontakt 8. Der andere Leiter endet offen. Die beiden Leiter bilden dadurch zusammen einen Wellenleiter in einem dielektrischen Medium, der Keramik .Only the outer of the two conductors has on the outer edge of the cylinder another contact 8. The other conductor ends open. The two conductors together thereby form a waveguide in a dielectric medium, the ceramic.
Der Spiral-Puls-Generator wird entweder aus zwei mit Metallpaste beschichteten keramischen Folien gewickelt oder aus zwei Metallfolien und zwei keramischen Folien aufge- baut. Eine wichtige Kenngröße ist dabei die Zahl n der Windungen, die bevorzugt in der Größenordnung 5 bis 100 liegen soll. Diese Wickelanordnung wird dann laminiert und anschließend gesintert, wodurch ein LTCC-Bauteil entsteht. Die so geschaffenen Spiral-Puls-Generatoren mit Kondensatoreigenschaft werden dann mit einer Funkenstrecke sowie einem Ladewiderstand beschaltet.The spiral pulse generator is either wound from two ceramic foils coated with metal paste or made up of two metal foils and two ceramic foils. An important parameter is the number n of turns, which should preferably be in the order of 5 to 100. This winding assembly is then laminated and then sintered, creating an LTCC component. The thus created spiral pulse generators with capacitor property are then connected with a spark gap and a charging resistor.
Die Funkenstrecke kann sich an den inneren oder den äußeren Anschlüssen oder auch innerhalb der Wicklung des Ge- nerators befinden. Als Hochspannungsschalter, der den Puls initiiert, kann bevorzugt eine Funkenstrecke verwendet werden, die temperaturstabil ist. Es kann auch ein Halbleiterschaltelement, bevorzugt in SiC-Technologie verwendet werden. Dieses ist für Temperaturen oberhalb 350 0C geeignet.The spark gap can occur at the inner or the outer terminals or also within the winding of the nerators are located. As a high-voltage switch, which initiates the pulse, a spark gap can preferably be used, which is temperature-stable. It is also possible to use a semiconductor switching element, preferably in SiC technology. This is suitable for temperatures above 350 0 C.
In einem konkreten Ausführungsbeispiel wird ein Keramikmaterial mit ε = 60 bis 70 verwendet. Dabei wird bevorzugt als Dielektrikum eine Keramikfolie, insbesondere ein Keramikband wie Heratape CT 707 oder bevorzugt CT 765 o- der auch eine Mischung beider, jeweils von Heraeus verwendet. Es hat eine Dicke der grünen Folie von typisch 50 bis 150 μm. Als Leiter wird insbesondere Ag-Leitpaste wie "Cofirable Silver, " ebenfalls von Heraeus, verwendet. Ein konkretes Beispiel ist TC 7303 von Heraeus. Gute Ergebnisse liefert auch die Metallpaste 6145 von DuPont. Diese Teile lassen sich gut laminieren und danach ausheizen ("binder burnout") und zusammen sintern ( "co-firing") .In a concrete embodiment, a ceramic material with ε = 60 to 70 is used. In this case, a ceramic foil, in particular a ceramic strip such as Heratape CT 707 or preferably CT 765 or a mixture of both, in each case used by Heraeus, is preferably used as the dielectric. It has a thickness of the green film of typically 50 to 150 microns. In particular, Ag conductive paste such as "Cofirable Silver", also from Heraeus, is used as the conductor. A concrete example is TC 7303 from Heraeus. Good results are also provided by the metal paste 6145 from DuPont. These parts are easy to laminate and then heat out ("binder burnout") and sinter together ("co-firing").
In einem Ausführungsbeispiel ist der Innendurchmesser ID des Spiral-Puls-Generator 10 mm. Die Breite der einzelnen Streifen ist ebenfalls 10 mm. Die Foliendicke ist 50 μm und auch die Dicke der beiden Leiter ist jeweils 50 μm. Die Ladespannung beträgt 300 V. Unter diesen Voraussetzungen erreicht der Spiral-Puls-Generator ein Optimum seiner Eigenschaften bei einer Windungszahl von n = 20 bis 70.In one embodiment, the inner diameter ID of the spiral pulse generator is 10 mm. The width of the individual strips is also 10 mm. The film thickness is 50 μm and also the thickness of the two conductors is 50 μm in each case. The charging voltage is 300 V. Under these conditions, the spiral pulse generator achieves its optimum properties with a number of turns of n = 20 to 70.
Der Generator wird von einem ferritischen E-I Kern mit einer Permeabilität von μ = 50...5000 umfasst, wie in Abb. gezeigt. Dadurch wird er als Transformator betrieben und nicht nach dem Prinzip der Vektorinversion. Vorteilhaft ist der Generator 1 ganz oder teilweise mit einem ferritischen Material 50 mit einer Permeabilität von μ = 50 bis 5000 umgeben. In Figur 2 ist ein Ferrit 50 in E-Kern-Gestalt gezeigt, dessen Mittelbalken 51 durch den inneren Hohlraum des Generators 1 hindurchgeht.The generator is comprised of a ferritic EI core with a permeability of μ = 50 ... 5000, as shown in Fig. As a result, it is operated as a transformer and not according to the principle of vector inversion. Advantageously, the generator 1 is wholly or partially surrounded by a ferritic material 50 having a permeability of μ = 50 to 5000. FIG. 2 shows a ferrite 50 in the shape of an E core, whose center bar 51 passes through the inner cavity of the generator 1.
In Figur 3 ist ein erfindungsgemäßer Spiralpulsgenerator 10 gezeigt, bei dem der zweite metallische Leiter 14 deutlich kürzer ist als der erste Leiter 3. Der zweite Leiter 14 sollte insbesondere mindestens 5 Windungen oder mindestens 10 % der Anzahl der Windungen kürzer sein als der erste Leiter 3, dessen Windungszahl bevorzugt in der Größenordnung von n = 20 bis 100 liegt. Die Kontakte der Funkenstrecke 5 können dabei einander gegenüberliegen o- der möglichst nah beieinander liegen.FIG. 3 shows a spiral pulse generator 10 according to the invention, in which the second metallic conductor 14 is significantly shorter than the first conductor 3. The second conductor 14 should in particular be at least 5 turns or at least 10% of the number of turns shorter than the first conductor 3 whose number of turns is preferably of the order of n = 20 to 100. The contacts of the spark gap 5 can be opposite each other o- as close as possible to each other.
Figur 4 zeigt einen Spiralpulsgenerator 20, der überhaupt nur einen einzigen metallischen Leiter 3 besitzt. Er weist jetzt einen separaten handelsüblichen Ladekondensator 10 auf, der mit der Funkenstrecke 5 in Serie geschaltet ist. Diese Schaltung wirkt als Spar-Transformator, indem ein Mittenabgriff 40 des metallischen Leiters über den Ladekondensator 10 und die Funkenstrecke 5 mit dem inneren Ende 41 des metallischen Leiters verbunden ist.FIG. 4 shows a spiral pulse generator 20 which has only a single metallic conductor 3 at all. He now has a separate commercially available charging capacitor 10, which is connected in series with the spark gap 5. This circuit acts as a spar transformer by connecting a center tap 40 of the metallic conductor via the charging capacitor 10 and the spark gap 5 to the inner end 41 of the metallic conductor.
Figur 5 zeigt den prinzipiellen Aufbau einer Metallhalo- genidlampe 25 mit integriertem Spiral-Puls-Generator 21, wobei keine Zünd-Elektrode außen am Entladungsgefäß 22, das aus Quarzglas oder Keramik gefertigt sein kann, angebracht ist. Der Spiral-Puls-Generator 21 ist mit der Funkenstrecke 23 und dem Ladewiderstand 24 im Außenkolben 36 untergebracht . Figur 6 zeigt eine Metallhalogenidlampe 25 mit einem Entladungsgefäß 22, das von zwei Zuleitungen 26, 27 in einem Außenkolben gehaltert wird. Die erste Zuleitung 26 ist ein kurz abgewinkelter Draht. Die zweite 27 ist im we- sentlichen ein Stab, der zur sockelfernen Durchführung 28 führt. Zwischen der Zuleitung 29 aus dem Sockel 30 und dem Stab 27 ist eine Zündeinheit 31 angeordnet, die den Spiral-Puls-Generator, die Funkenstrecke und den Ladewiderstand enthält, wie in Figur 5 angedeutet.FIG. 5 shows the basic structure of a metal halide lamp 25 with integrated spiral pulse generator 21, wherein no ignition electrode is attached to the outside of the discharge vessel 22, which may be made of quartz glass or ceramic. The spiral pulse generator 21 is housed with the spark gap 23 and the charging resistor 24 in the outer bulb 36. FIG. 6 shows a metal halide lamp 25 with a discharge vessel 22, which is supported by two supply lines 26, 27 in an outer bulb. The first lead 26 is a short-angled wire. The second 27 is essentially a rod which leads to the passage 28 remote from the base. Between the supply line 29 from the base 30 and the rod 27, an ignition unit 31 is arranged, which contains the spiral pulse generator, the spark gap and the charging resistor, as indicated in Figure 5.
Figur 7 zeigt eine Metallhalogenidlampe 25 ähnlich wie Figur 5 mit einem Entladungsgefäß 22, das von zwei Zuleitungen 26, 27 in einem Außenkolben 36 gehaltert wird. Die erste Zuleitung 26 ist ein kurz abgewinkelter Draht. Die zweite 27 ist im wesentlichen ein Stab, der zur sockel- fernen Durchführung 28 führt. Hier ist die Zündeinheit im Sockel 30 angeordnet, und zwar sowohl der Spiral-Puls- Generator 21, als auch die Funkenstrecke 23 und der Ladewiderstand 24.FIG. 7 shows a metal halide lamp 25 similar to FIG. 5 with a discharge vessel 22, which is held by two supply lines 26, 27 in an outer bulb 36. The first lead 26 is a short-angled wire. The second 27 is essentially a rod which leads to the base-remote bushing 28. Here, the ignition unit in the base 30 is arranged, both the spiral pulse generator 21, as well as the spark gap 23 and the charging resistor 24th
Diese Technik kann auch für elektrodenlose Lampen ange- wendet werden, wobei der Spiral-Puls-Generator als Zündhilfe dienen kann.This technique can also be used for electrodeless lamps, where the spiral pulse generator can serve as a starting aid.
Weitere Anwendungen dieses kompakten Hochspannungspulsgenerators liegen in der Zündung anderer Geräte. Die Anwendung ist vor allem bei sog. magischen Kugeln, bei der Er- zeugung von Röntgenpulsen und der Erzeugung von Elektronenstrahl-Pulsen vorteilhaft. Auch ein Einsatz in Kfz als Ersatz für die üblichen Zündspulen ist möglich.Other applications of this compact high-voltage pulse generator are in the ignition of other devices. The application is particularly advantageous in the case of so-called magic spheres, in the generation of X-ray pulses and in the generation of electron beam pulses. A use in a car as a replacement for the usual ignition coils is possible.
Dabei werden Windungszahlen von n bis 500 verwendet, so dass die Ausgangsspannung bis in die Größenordnung von 100 kV erreicht. Denn die Ausgangsspannung UA ist als Funktion der Ladespannung UL gegeben durch UA = 2 x n x UL x η, wobei die Effizienz η durch η = (AD-ID) /AD gegeben ist .In this case, winding numbers of n to 500 are used, so that the output voltage reaches up to the order of 100 kV. Because the output voltage U A is as Function of the charging voltage U L given by U A = 2 xnx U L x η, where the efficiency η is given by η = (AD-ID) / AD.
Die Erfindung entfaltet besondere Vorteile im Zusammen- wirken mit Hochdruckentladungslampen für Autoscheinwerfer, die mit Xenon unter hohem Druck von bevorzugt mindestens 3 bar und Metallhalogeniden gefüllt sind. Diese sind besonders schwer zu zünden, da wegen des hohen Xenondrucks die Zündspannung mehr als 10 kV beträgt. Der- zeit wird versucht, die Komponenten der Zündeinheit im Sockel unterzubringen. Ein Spiral-Puls-Generator mit integriertem Ladewiderstand kann in den Sockel der Kfz- Lampe untergebracht werden.The invention develops particular advantages in cooperation with high-pressure discharge lamps for car headlights, which are filled with xenon under high pressure of preferably at least 3 bar and metal halides. These are particularly difficult to ignite because of the high xenon pressure, the ignition voltage is more than 10 kV. At present an attempt is being made to accommodate the components of the ignition unit in the base. A spiral pulse generator with integrated charging resistor can be accommodated in the base of the vehicle lamp.
Die Erfindung entfaltet ganz besondere Vorteile im Zusam- menwirken mit Hochdruckentladungslampen, die kein Quecksilber enthalten. Derartige Lampen sind aus Umweltschutzgründen besonders erstrebenswert. Sei enthalten eine geeignete Metallhalogenid-Füllung und insbesondere ein E- delgas wie Xenon unter hohem Druck. Wegen des fehlenden Quecksilbers ist die Zündspannung besonders hoch. Sie beträgt mehr als 20 kV. Derzeit wird versucht, die Komponenten der Zündeinheit im Sockel unterzubringen. Ein Spiral-Puls-Generator mit integriertem Ladewiderstand kann entweder in den Sockel der Quecksilberfreien Lampe oder in einen Außenkolben der Lampe untergebracht sein. The invention has very particular advantages in conjunction with high-pressure discharge lamps which contain no mercury. Such lamps are particularly desirable for environmental reasons. It contains a suitable metal halide charge and, in particular, a noble gas such as xenon under high pressure. Because of the lack of mercury, the ignition voltage is particularly high. It is more than 20 kV. Currently trying to accommodate the components of the ignition unit in the base. A spiral pulse generator with built-in charging resistor can either be housed in the base of the mercury-free lamp or in an outer bulb of the lamp.

Claims

Ansprüche claims
1. Kompakter Hochspannungspulsgenerator auf der Basis eines Spiral-Puls-Generators , wobei der Spiral-Puls- Generator als LTCC-Bauteil oder HTCC-Bauteil ausgeführt ist aus einer spiralig aufgewickelten Keramik- folie und darauf streifenartig aufgebrachter metallischer Leitpaste, dadurch gekennzeichnet, dass der Spiralpulsgenerator als Transformator wirkt, indem ein erster metallischer Leiter zu einer Spirale mit n Windungen aufgerollt ist, wobei n mindestens 5 be- trägt, während außerdem ein Schalter und ein Ladekondensator mit dem Anfang des ersten metallischen Leiters verbunden sind.1. A compact high voltage pulse generator based on a spiral pulse generator, wherein the spiral pulse generator is designed as LTCC component or HTCC component of a spirally wound ceramic film and strip-like applied metallic conductive paste, characterized in that the Spiral pulse generator acts as a transformer by a first metallic conductor is rolled up into a spiral with n turns, where n is at least 5, while also a switch and a charging capacitor are connected to the beginning of the first metallic conductor.
2. Hochspannungspulsgenerator nach Anspruch 1, dadurch gekennzeichnet, dass der Spiral-Puls-Generator als Spartransformator geschaltet ist, indem er nur einen einzigen metallischen Leiter (3) aufweist, und ein Mittenabgriff (40) des metallischen Leiters über den Ladekondensator (10) und die Funkenstrecke (5) mit dem inneren Ende (41) des metallischen Leiters ver- bunden ist.2. High-voltage pulse generator according to claim 1, characterized in that the spiral pulse generator is connected as an autotransformer by having only a single metallic conductor (3), and a center tap (40) of the metallic conductor via the charging capacitor (10) and the spark gap (5) is connected to the inner end (41) of the metallic conductor.
3. Hochspannungspulsgenerator nach Anspruch 1, dadurch gekennzeichnet, dass die Spirale mindestens n = 5 Windungen und bevorzugt höchstens n = 500 Windungen umfasst .3. High-voltage pulse generator according to claim 1, characterized in that the spiral comprises at least n = 5 turns and preferably at most n = 500 turns.
4. Hochspannungspulsgenerator nach Anspruch 1, dadurch gekennzeichnet, dass der Generator ganz oder teilweise mit einem ferritischen Material mit einer Permeabilität von μ=50...5000 umgeben ist. 4. High-voltage pulse generator according to claim 1, characterized in that the generator is wholly or partially surrounded by a ferritic material having a permeability of μ = 50 ... 5000.
5. Hochspannungspulsgenerator nach Anspruch 1, dadurch gekennzeichnet, dass der Schalter eine Funkenstrecke ist .5. High-voltage pulse generator according to claim 1, characterized in that the switch is a spark gap.
6. Hochspannungspulsgenerator nach Anspruch 1, dadurch gekennzeichnet, dass der Ladekondensator ein konventioneller Kondensator ist.6. High-voltage pulse generator according to claim 1, characterized in that the charging capacitor is a conventional capacitor.
7. Hochspannungspulsgenerator nach Anspruch 1, dadurch gekennzeichnet, dass der Ladekondensator dadurch gebildet ist, dass ein zweiter metallischer Leiter auf einer zweiten spiralig aufgewickelten Keramikfolie zusammen mit der ersten Keramikfolie aufgewickelt wird, wobei jedoch die aufgewickelte Länge der zweiten Keramikfolie um mindestens zwei Wicklungen kürzer als die aufgewickelte Länge der ersten Keramikfolie ist.7. High-voltage pulse generator according to claim 1, characterized in that the charging capacitor is formed by that a second metallic conductor is wound on a second spirally wound ceramic film together with the first ceramic film, but wherein the wound length of the second ceramic film by at least two windings shorter than the wound length of the first ceramic sheet is.
8. Hochspannungspulsgenerator nach Anspruch 1, dadurch gekennzeichnet, dass die Anzahl der Wicklungen des zweiten metallischen Leiters mindestens eine Wicklung und höchstens 20% der Anzahl der Wicklungen des ers- ten metallischen Leiters beträgt.8. High-voltage pulse generator according to claim 1, characterized in that the number of windings of the second metallic conductor is at least one winding and at most 20% of the number of windings of the first metallic conductor.
9. Zündvorrichtung auf Basis eines Spiralpulsgenerators nach Anspruch 1, dadurch gekennzeichnet, dass die Zündvorrichtung weiterhin zumindest einen Ladewiderstand und einen Schalter umfasst.9. ignition device based on a Spiralpulsgenerators according to claim 1, characterized in that the ignition device further comprises at least one charging resistor and a switch.
10. Hochdruckentladungslampe mit einem Entladungsgefäß, das in einem Außenkolben untergebracht ist, wobei eine Zündvorrichtung in der Lampe integriert ist, die Hochspannungspulse in der Lampe von mindestens 15 kV erzeugt, dadurch gekennzeichnet, dass die Zündvorrichtung im Außenkolben untergebracht ist und einen Hochspannungspulsgenerator gemäß einem der vorhergehenden Ansprüche 1 bis 8 umfasst.10. high-pressure discharge lamp with a discharge vessel, which is housed in an outer bulb, wherein an ignition device is integrated in the lamp, the high voltage pulses in the lamp of at least 15 kV generated, characterized in that the ignition device is housed in the outer bulb and a high voltage pulse generator according to one of the preceding claims 1 to 8 comprises.
11. Hochdruckentladungslampe nach Anspruch 10, dadurch gekennzeichnet, dass die Zündvorrichtung im Außenkolben durch ein Gestell gehaltert ist.11. High-pressure discharge lamp according to claim 10, characterized in that the ignition device is supported in the outer bulb by a frame.
12. Hochdruckentladungslampe nach Anspruch 10, dadurch gekennzeichnet, dass die vom Spiral-Puls-Generator vermittelte Hochspannung direkt auf zwei Elektroden im Entladungsgefäß wirkt.12. High-pressure discharge lamp according to claim 10, characterized in that the high-voltage imparted by the spiral pulse generator acts directly on two electrodes in the discharge vessel.
13. Hochdruckentladungslampe nach Anspruch 10, dadurch gekennzeichnet, dass die vom Spiral-Puls-Generator vermittelte Spannung auf eine außen am Entladungsge- faß angebrachte Zündhilfs-Elektrode wirkt.13. High-pressure discharge lamp according to claim 10, characterized in that the voltage imparted by the spiral pulse generator acts on an outlet mounted on the outside of the discharge Zündhilfs electrode.
14. Hochdruckentladungslampe nach Anspruch 10, dadurch gekennzeichnet, dass der Spiral-Puls-Generator aus mehreren Schichten aufgebaut ist, wobei die Anzahl n der Schichten mindestens n = 5 beträgt.14. High-pressure discharge lamp according to claim 10, characterized in that the spiral pulse generator is composed of several layers, wherein the number n of the layers is at least n = 5.
15. Hochdruckentladungslampe nach Anspruch 14, dadurch gekennzeichnet, dass die Anzahl n der Schichten höchstens n = 500, bevorzugt höchstens n = 100, beträgt .15. High-pressure discharge lamp according to claim 14, characterized in that the number n of the layers is at most n = 500, preferably at most n = 100.
16. Hochdruckentladungslampe nach Anspruch 10, dadurch gekennzeichnet, dass der Spiral-Puls-Generator in etwa hohlzylindrische Gestalt hat, mit einem Innendurchmesser von mindestens 10 mm. 16. High-pressure discharge lamp according to claim 10, characterized in that the spiral pulse generator has approximately hollow cylindrical shape, with an inner diameter of at least 10 mm.
17. Hochdruckentladungslampe nach Anspruch 10, dadurch gekennzeichnet, dass die Dielektrizitätskonstante ε des Spiral-Puls-Generators bei mindestens ε = 10 liegt .17. High-pressure discharge lamp according to claim 10, characterized in that the dielectric constant ε of the spiral pulse generator is at least ε = 10.
18. Hochdruckentladungslampe nach Anspruch 10, dadurch gekennzeichnet, dass im Außenkolben außerdem ein Vorwiderstand untergebracht ist, der den Ladestrom des Spiral-Puls-Generators begrenzt.18. High-pressure discharge lamp according to claim 10, characterized in that in the outer bulb also a series resistor is housed, which limits the charging current of the spiral pulse generator.
19. Hochdruckentladungslampe mit einem Entladungsgefäß und einem Sockel, wobei eine Zündvorrichtung in der Lampe integriert ist, die Hochspannungspulse in der Lampe von mindestens 15 kV erzeugt, dadurch gekenn- zeichnet, dass die Zündvorrichtung im Sockel der Lampe untergebracht ist und einen Hochspannungspulsgene- rator gemäß einem der vorhergehenden Ansprüche 1 bis 8 umfasst. 19. High-pressure discharge lamp with a discharge vessel and a base, wherein an ignition device is integrated in the lamp which generates high-voltage pulses in the lamp of at least 15 kV, characterized in that the ignition device is accommodated in the base of the lamp and a Hochspannungspulsgene- rator according to one of the preceding claims 1 to 8 comprises.
EP08717396A 2007-03-06 2008-03-05 High-voltage pulse generator and high-pressure discharge lamp comprising such a generator Not-in-force EP2116111B1 (en)

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