EP1056315A2 - Circuit for operating AC high pressure discharge lamps for a vehicle - Google Patents
Circuit for operating AC high pressure discharge lamps for a vehicle Download PDFInfo
- Publication number
- EP1056315A2 EP1056315A2 EP00110480A EP00110480A EP1056315A2 EP 1056315 A2 EP1056315 A2 EP 1056315A2 EP 00110480 A EP00110480 A EP 00110480A EP 00110480 A EP00110480 A EP 00110480A EP 1056315 A2 EP1056315 A2 EP 1056315A2
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- EP
- European Patent Office
- Prior art keywords
- gas discharge
- pressure gas
- lamp
- high pressure
- filter
- 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.)
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Classifications
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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
- H05B41/14—Circuit arrangements
- H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
- H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
- H05B41/288—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps
- H05B41/292—Arrangements for protecting lamps or circuits against abnormal operating conditions
Definitions
- the invention relates to a circuit for operating a AC high pressure gas discharge lamp for a motor vehicle, with a Control unit, a superimposed ignitor, a symmetrical lamp filter and a high pressure gas discharge lamp, the symmetrical lamp filter between the high pressure gas discharge lamp and the superposition ignition is arranged with a filter capacity parallel to the high pressure gas discharge lamp and a choke in the supply lines to this parallel connection.
- AC high pressure gas discharge lamps as used in motor vehicles, generate a broad EMI spectrum with high intensity in the frequency range of a few megahertz to the gigahertz range. These disorders are in the essentially generated during current commutation. It goes out with every commutation the lamp briefly and is re-ignited with increasing voltage, which creates a high-energy glitch every time.
- the invention has for its object to develop a circuit that on the one hand, the interference impulses of the lamp are reduced, and on the other hand, the remaining interference pulses are sufficient, the ignition voltage during the Ignition should be reduced as little as possible.
- This object is achieved in that the two chokes as Coils with a closed, soft magnetic, high-resistance ferrite core are trained.
- a filter is therefore used to suppress the lamp Filter inductances especially during current commutation and during Ignition are extremely non-linear.
- the chokes are advantageously so designed that their inductors during current commutation in Zero crossing of the current very large and shortly before, as well as during the ignition get as small as possible.
- These inductors are coils with a closed, soft magnetic core (without air gap), which has a pronounced Hysteresis loop with high remanence and high coercivity.
- ring cores made of high-resistance ferrite material (e.g. NiZn ferrites, MnZn ferrites, MgZn ferrites) are suitable.
- Toroidal chokes are used as interference suppression components, especially for thyristor and Triac circuits known.
- such chokes generally have iron or low-resistance ferrite cores to achieve the highest possible inductance values or high To reach saturation levels. This can be an interference suppression up to Frequencies of the FM radio range are achieved, a uniform Interference suppression of frequencies far beyond this, as required at the beginning but not reachable with it. Therefore, the commonly used ones turned out to be Toroidal chokes to solve the task of the invention as not suitable.
- each closed design is one for the choke cores Coil core can be used; for cost reasons (manufacturing and winding costs) however, ring cores are particularly advantageous.
- the single figure shows a control device for a high-pressure gas discharge lamp, and an ignitor with an integrated lamp filter.
- the control unit controls and supplies both the high pressure gas discharge lamp (GDL) as well as the primary ignition circuit of the igniter.
- the ignitor is as one Superimposed ignitor; this is the secondary winding of the Ignition transformer (K1) connected in one of the lamp leads.
- the ignitor also has a symmetrical lamp filter, the symmetrical Lamp filter between the high pressure gas discharge lamp (GDL) and the Superposition ignition is arranged and a filter capacity (C1) parallel to High pressure gas discharge lamp (GDL) and a choke (L1, L2) in each Has feed lines to this parallel connection.
- the two chokes consist of coils, each on a closed, soft magnetic, high-resistance core with a pronounced hysteresis curve, preferably on Toroidal cores made of high-resistance ferrite are wound.
- the chokes (L1, L2) are designed so that the maximum sum of the two Inductors the magnitude of the inductance of the secondary winding of the Ignition transformer (K1) reached (this is the case when the current through the Inductors just went through zero and the hysteresis loop the Coercive field strength) and the minimum sum is significantly smaller than that Inductance of the secondary winding of the ignition transformer (K1) is (this is the Fall in the time before the start of commutation and the zero crossing of the Current).
- the cores of the chokes (L1, L2) are saturated and the inductances almost disappear.
- the cores of the chokes (L1, L2) have no air gap (not even a distributed one) Air gap as is usual with powder cores).
- Rod core chokes used in such Filter circuits commonly used have an extreme air gap and are therefore very linear.
- the nonlinear filter not only has a particularly good filter property with regard to lamp malfunctions, it even causally reduces their occurrence. This could be shown by first using a high pressure gas discharge lamp without, then with, and then again without the invention Filter arrangement was operated. The from the high pressure gas discharge lamp outgoing interference was largely reduced by the filter. Surprisingly, the high pressure gas discharge lamp also showed up Removal of the filter from the circuit initially only very little interference, the interference pulses but after some time again, in the for a circuit without Filter usual intensity occurred.
- the filter circuit according to the invention advantageously also enables even a dimmed operation of a high pressure gas discharge lamp.
- Both circuits previously used could AC high pressure gas discharge lamps only for a short time and only a little dimmed (below their nominal power) because they are operated in this mode extremely aging.
- the filter circuit according to the invention reduces, even when the lamp is dimmed Re-ignition peaks in current commutation to such a low level that the Electrodes are hardly damaged.
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- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
Description
Die Erfindung betrifft eine Schaltung zum Betreiben einer Wechselstrom-Hochdruckgasentladungslampe für ein Kraftfahrzeug, mit einem Steuergerät, einem Überlagerungszündgerät, einem symmetrischen Lampenfilter und einer Hochdruckgasentladungslampe, wobei das symmetrische Lampenfilter zwischen der Hochdruckgasentladungslampe und der Überlagerungszündung angeordnet ist, mit einer Filterkapazität parallel zur Hochdruckgasentladungslampe und je einer Drossel in den Zuführungsleitungen zu dieser Parallelschaltung.The invention relates to a circuit for operating a AC high pressure gas discharge lamp for a motor vehicle, with a Control unit, a superimposed ignitor, a symmetrical lamp filter and a high pressure gas discharge lamp, the symmetrical lamp filter between the high pressure gas discharge lamp and the superposition ignition is arranged with a filter capacity parallel to the high pressure gas discharge lamp and a choke in the supply lines to this parallel connection.
Eine solche Schaltung kommt in Seriengeräten der Anmelderin seit 1996 zur Anwendung.Such a circuit has been used in the applicant's series devices since 1996 Application.
Wechselstrom-Hochdruckgasentladungslampen wie sie im Kfz eingesetzt werden, erzeugen ein breites EMI-Spektrum mit hoher Intensität im Frequenzbereich von wenigen Megahertz bis in den Gigahertzbereich. Diese Störungen werden im wesentlichen bei der Stromkommutierung erzeugt. Bei jeder Kommutierung verlischt die Lampe kurz und wird mit ansteigender Spannung sofort wiedergezündet, wodurch jedesmal ein energiereicher Störimpuls entsteht.AC high pressure gas discharge lamps as used in motor vehicles, generate a broad EMI spectrum with high intensity in the frequency range of a few megahertz to the gigahertz range. These disorders are in the essentially generated during current commutation. It goes out with every commutation the lamp briefly and is re-ignited with increasing voltage, which creates a high-energy glitch every time.
Üblicherweise werden diese Impulse entweder gefiltert oder sie werden abgeschirmt. Die Abschirmung ist eine sehr teure Maßnahme. Die Filterung beeinflußt die Zündbarkeit der Lampe; das Zündgerät muß mehr Energie pro Zündimpuls erzeugen. Dies hat Auswirkung auf die Kosten und die Baugrösse des Zündgerätes und indirekt auch auf das Vorschaltgerät, welches bei höherer Zündenergle auch einen höheren Übernahmestrom liefern muß.Usually these pulses are either filtered or shielded. Shielding is a very expensive measure. The filtering affects the Ignitability of the lamp; the igniter needs more energy per ignition pulse produce. This has an impact on the costs and the size of the igniter and indirectly also on the ballast, which also with higher ignition energy must deliver a higher takeover current.
Bei der bekannten, von der Anmelderin bisher verwendeten Filterschaltung kommen Stabkerndrosseln zur Anwendung, also Spulen mit konstanter Induktivität. Diese Filterschaltung soll für die speziellen Anforderungen der Entstörung von Hochdruckgasentladungslampen weiter verbessert werden.In the known filter circuit previously used by the applicant Rod core chokes for use, i.e. coils with constant inductance. This Filter circuit is designed for the special requirements of interference suppression High pressure gas discharge lamps can be further improved.
Der Erfindung liegt die Aufgabe zugrunde, eine Schaltung zu entwickeln, die einerseits die Störimpulse der Lampe ursächlich reduziert und andererseits die verbleibenden Störimpulse ausreichen filtert, wobei die Zündspannung während des Zündens möglichst wenig reduziert werden soll. The invention has for its object to develop a circuit that on the one hand, the interference impulses of the lamp are reduced, and on the other hand, the remaining interference pulses are sufficient, the ignition voltage during the Ignition should be reduced as little as possible.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die beiden Drosseln als Spulen mit einem geschlossenen, weichmagnetischen, hochohmigen Ferritkern ausgebildet sind.This object is achieved in that the two chokes as Coils with a closed, soft magnetic, high-resistance ferrite core are trained.
Damit wird zur Entstörung der Lampe ein Filter eingesetzt, dessen Filterinduktivitäten speziell während der Stromkommutierung und während der Zündung extrem nichtlinear sind. Die Drosseln sind dabei vorteilhafterweise so ausgelegt, daß ihre Induktivitäten während der Stromkommutierung im Nulldurchgang des Stroms sehr groß und kurz davor, sowie während der Zündung möglichst klein werden. Diese Induktivitäten sind Spulen mit geschlossenem, weichmagnetischen Kern (ohne Luftspalt), welcher eine ausgeprägte Hystereseschleife mit hoher Remanenz und hoher Koerzitivfeldstärke aufweist. Am besten sind Ringkerne aus hochohmigem Ferritmaterial (z. B.: NiZn-Ferrite, MnZn-Ferrite, MgZn-Ferrite) geeignet.A filter is therefore used to suppress the lamp Filter inductances especially during current commutation and during Ignition are extremely non-linear. The chokes are advantageously so designed that their inductors during current commutation in Zero crossing of the current very large and shortly before, as well as during the ignition get as small as possible. These inductors are coils with a closed, soft magnetic core (without air gap), which has a pronounced Hysteresis loop with high remanence and high coercivity. At the the best are ring cores made of high-resistance ferrite material (e.g. NiZn ferrites, MnZn ferrites, MgZn ferrites) are suitable.
Ringkerndrosseln sind zwar als Entstörbauteile, vor allem für Thyristor- und Triac-Schaltungen bekannt. Solche Drosseln weisen aber im allgemeinen Eisen- oder niederohmige Ferritkerne auf, um möglichst hohe Induktivitätswerte oder hohe Sättigungswerte zu erreichen. Damit kann zwar ein Entstörung bis zu den Frequenzen des UKW-Rundfunkbereichs erzielt werden, eine gleichmäßige Entstörung weit darüber hinausgehender Frequenzen, wie eingangs gefordert, ist damit aber nicht erreichbar. Daher erwiesen sich die allgemein verwendeten Ringkerndrosseln zur Lösung der erfindungsgemäßen Aufgabenstellung als nicht geeignet.Toroidal chokes are used as interference suppression components, especially for thyristor and Triac circuits known. However, such chokes generally have iron or low-resistance ferrite cores to achieve the highest possible inductance values or high To reach saturation levels. This can be an interference suppression up to Frequencies of the FM radio range are achieved, a uniform Interference suppression of frequencies far beyond this, as required at the beginning but not reachable with it. Therefore, the commonly used ones turned out to be Toroidal chokes to solve the task of the invention as not suitable.
Vorteilhafte Ausgestaltungen der erfindungsgemäßen Schaltung sind in den Unteransprüchen genannt.Advantageous embodiments of the circuit according to the invention are in the Subclaims called.
So ist für die Drosselkerne zwar prinzipiell jede geschlossene Bauform eines Spulenkerns einsetzbar; aus Kostengründen (Herstellungs- und Wicklungskosten) sind Ringkerne jedoch besonders vorteilhaft.In principle, each closed design is one for the choke cores Coil core can be used; for cost reasons (manufacturing and winding costs) however, ring cores are particularly advantageous.
Zur hochspannungsfesten Ausbildung der Drosseln ist es vorteilhaft, erstens die Drosselspulen einlagig zu wickeln und zweitens den Kern nicht entlang seines ganzen Umfangs zu bewickeln, damit die Zuleitungen der Drossel nicht zu dicht beieinanderliegen. For high-voltage-resistant design of the chokes, it is advantageous, first of all Choke coils in one layer and secondly not the core along its over the entire circumference so that the supply lines to the choke are not too tight lying together.
Im folgenden soll ein Ausführungsbeispiel der erfindungsgemäßen Schaltung anhand der Zeichnung näher erläutert werden.In the following an embodiment of the circuit according to the invention be explained in more detail with reference to the drawing.
Die einzige Figur zeigt ein Steuergerät für eine Hochdruckgasentladungslampe, sowie ein Zündgerät mit integriertem Lampenfilter.The single figure shows a control device for a high-pressure gas discharge lamp, and an ignitor with an integrated lamp filter.
Das Steuergerät steuert und versorgt sowohl die Hochdruckgasentladungslampe (GDL) als auch den primären Zündkreis des Zündgerätes. Das Zündgerät ist als ein Überlagerungszündgerät ausgeführt; hierzu ist die Sekundärwicklung des Zündtransformators (K1) in eine der Lampenzuleitungen geschaltet. Das Zündgerät weist zudem ein symmetrisches Lampenfilter auf, wobei das symmetrische Lampenfilter zwischen der Hochdruckgasentladungslampe (GDL) und der Überlagerungszündung angeordnet ist und eine Filterkapazität (C1) parallel zur Hochdruckgasentladungslampe (GDL) und je eine Drossel (L1, L2) in den Zuführungsleitungen zu dieser Parallelschaltung aufweist. Die beiden Drosseln (L1, L2) bestehen aus Spulen, die auf jeweils einem geschlossenen, weichmagnetischen, hochohmigen Kern mit ausgeprägter Hysteresekurve, und zwar vorzugsweise auf Ringkerne aus hochohmigem Ferrit, gewickelt sind.The control unit controls and supplies both the high pressure gas discharge lamp (GDL) as well as the primary ignition circuit of the igniter. The ignitor is as one Superimposed ignitor; this is the secondary winding of the Ignition transformer (K1) connected in one of the lamp leads. The ignitor also has a symmetrical lamp filter, the symmetrical Lamp filter between the high pressure gas discharge lamp (GDL) and the Superposition ignition is arranged and a filter capacity (C1) parallel to High pressure gas discharge lamp (GDL) and a choke (L1, L2) in each Has feed lines to this parallel connection. The two chokes (L1, L2) consist of coils, each on a closed, soft magnetic, high-resistance core with a pronounced hysteresis curve, preferably on Toroidal cores made of high-resistance ferrite are wound.
Die Drosseln (L1, L2) sind so ausgelegt, daß die maximale Summe der beiden Induktivitäten die Größenordnung der Induktivität der sekundären Wicklung des Zündtransformators (K1) erreicht (dies ist dann der Fall, wenn der Strom durch die Induktivitäten gerade durch Null gegangen ist und die Hystereseschleife die Koerzitivfeldstärke durchläuft) und die minimale Summe deutlich kleiner als die Induktivität der sekundären Wicklung des Zündtransformators (K1) ist (dies ist der Fall in der Zeit vor dem Beginn der Kommutierung und dem Nulldurchgang des Stroms). Während der Zündung sind die Kerne der Drosseln (L1, L2) gesättigt und die Induktivitäten verschwinden annähernd.The chokes (L1, L2) are designed so that the maximum sum of the two Inductors the magnitude of the inductance of the secondary winding of the Ignition transformer (K1) reached (this is the case when the current through the Inductors just went through zero and the hysteresis loop the Coercive field strength) and the minimum sum is significantly smaller than that Inductance of the secondary winding of the ignition transformer (K1) is (this is the Fall in the time before the start of commutation and the zero crossing of the Current). During the ignition, the cores of the chokes (L1, L2) are saturated and the inductances almost disappear.
Die Kerne der Drosseln (L1, L2) weisen keinen Lufspalt auf (auch keinen verteilten Luftspalt wie er bei Pulverkernen üblich ist). Stabkerndrosseln, die in solchen Filterschaltungen üblicherweise eingesetzt werden, haben einen extremen Luftspalt und sind daher sehr linear.The cores of the chokes (L1, L2) have no air gap (not even a distributed one) Air gap as is usual with powder cores). Rod core chokes used in such Filter circuits commonly used have an extreme air gap and are therefore very linear.
Das nichtlineare Filter hat nicht nur eine besonders gute Filtereigenschaft bezüglich der Lampenstörungen, es reduziert sogar ursächlich ihre Entstehung. Dieses konnte gezeigt werden, indem eine Hochdruckgasentladungslampe zunächst ohne, danach mit, und anschließend nochmals ohne die erfindungsgemäße Filteranordnung betrieben wurde. Die von der Hochdruckgasentladungslampe ausgehenden Störungen wurden durch das Filter weitgehend reduziert. Überraschenderweise zeigte die Hochdruckgasentladungslampe auch nach Herausnahme des Filters aus der Schaltung zunächst nur sehr geringe Störungen, wobei die Störimpulse aber nach einiger Zeit erneut, in der für eine Schaltung ohne Filter üblichen Intensität auftraten.The nonlinear filter not only has a particularly good filter property with regard to lamp malfunctions, it even causally reduces their occurrence. This could be shown by first using a high pressure gas discharge lamp without, then with, and then again without the invention Filter arrangement was operated. The from the high pressure gas discharge lamp outgoing interference was largely reduced by the filter. Surprisingly, the high pressure gas discharge lamp also showed up Removal of the filter from the circuit initially only very little interference, the interference pulses but after some time again, in the for a circuit without Filter usual intensity occurred.
Dieses deutet darauf hin, daß die erfindungsgemäß ausgebildete Filterschaltung reversible Veränderungen an der Hochdruckgasentladungslampe (vermutlich an den Elektroden) bewirkt, welche zu einer verringerten Abstrahlung von Störungen führen. Die genauen physikalischen Hintergründe dieses überraschenden Effektes sind bisher noch nicht bekannt.This indicates that the filter circuit designed according to the invention reversible changes to the high pressure gas discharge lamp (probably to the Electrodes), which lead to a reduced radiation of interference. The exact physical backgrounds of this surprising effect are not yet known.
Vorteilhafterweise ermöglicht die erfindungsgemäßen Filterschaltung darüber hinaus sogar einen gedimmten Betrieb einer Hochdruckgasentladungslampe. Bei den bisher verwendeten Schaltungen konnten Wechselstrom-Hochdruckgasentladungslampen nur für kurze Zeit und nur wenig gedimmt (unterhalb ihrer Nennleistung) betrieben werden, weil sie in diesem Betrieb extrem altern.The filter circuit according to the invention advantageously also enables even a dimmed operation of a high pressure gas discharge lamp. Both circuits previously used could AC high pressure gas discharge lamps only for a short time and only a little dimmed (below their nominal power) because they are operated in this mode extremely aging.
Das Altern der Lampe hat zwei Gründe:
Im Kraftfahrzeugen ist es jedoch wünschenswert, bei sehr hohen Umgebungstemperaturen die Lampenbetriebsleistung zu reduzieren, um das Steuergerät vor Überhitzung und damit vor Zerstörung zu bewahren. Eine weitere wünschenswerte Anwendung von gedimmten Hochdruckgasentladungslampen ist das gedimmte Tagfahrlicht. In motor vehicles, however, it is desirable at very high Ambient temperatures to reduce the lamp operating power to that To protect the control unit from overheating and thus from destruction. Another is a desirable application of dimmed high pressure gas discharge lamps the dimmed daytime running lights.
Die erfindungsgemäße Filterschaltung reduziert, auch bei gedimmter Lampe die Wiederzündspitzen bei der Stromkommutierung auf ein so geringes Maß, daß die Elektroden kaum noch geschädigt werden.The filter circuit according to the invention reduces, even when the lamp is dimmed Re-ignition peaks in current commutation to such a low level that the Electrodes are hardly damaged.
Die Ergebnisse aus Lampenlebensdaueruntersuchungen mit Ringkerndrosseln als Entstörelement zeigen, daß eine Hochdruckgasentladungslampe im gedimmten Betrieb sogar geringer altert als im normalem Betrieb ohne Ringkerndrossel. Dadurch wird der Einsatz von Hochdruckgasentladungslampen nun auch für gedimmtes Tagfahrlicht geeignet. The results of lamp life tests with toroidal chokes as Interference suppressor show that a high pressure gas discharge lamp in the dimmed Operation ages even less than in normal operation without a toroidal choke. As a result, the use of high pressure gas discharge lamps is now also for dimmed daytime running lights suitable.
- C1C1
- FilterkapazitätFilter capacity
- GDLGDL
- (Wechselstrom-) Hochdruckgasentladungslampe(AC) high pressure gas discharge lamp
- K1K1
- ZündtransformatorIgnition transformer
- L1, L2L1, L2
- DrosselnChokes
Claims (4)
dadurch gekennzeichnet,
daß die beiden Drosseln (L1, L2) als Spulen mit einem geschlossenen, weichmagnetischen, hochohmigen Ferritkern ausgebildet sind.Circuit for operating an AC high-pressure gas discharge lamp (GDL) for a motor vehicle, with a control unit, a superimposed igniter, a symmetrical lamp filter and a high-pressure gas discharge lamp (GDL), the symmetrical lamp filter being arranged between the high-pressure gas discharge lamp (GDL) and the superimposed ignition, with a filter capacity (C1) parallel to the high pressure gas discharge lamp (GDL) and one choke (L1, L2) in each of the feed lines to this parallel connection,
characterized,
that the two chokes (L1, L2) are designed as coils with a closed, soft-magnetic, high-resistance ferrite core.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19924095 | 1999-05-26 | ||
DE19924095A DE19924095A1 (en) | 1999-05-26 | 1999-05-26 | Circuit for operating an AC high-pressure gas discharge lamp for a motor vehicle |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1056315A2 true EP1056315A2 (en) | 2000-11-29 |
EP1056315A3 EP1056315A3 (en) | 2001-09-12 |
EP1056315B1 EP1056315B1 (en) | 2003-07-30 |
Family
ID=7909226
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00110480A Expired - Lifetime EP1056315B1 (en) | 1999-05-26 | 2000-05-17 | Circuit for operating AC high pressure discharge lamps for a vehicle |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1056315B1 (en) |
AT (1) | ATE246439T1 (en) |
DE (2) | DE19924095A1 (en) |
ES (1) | ES2203375T3 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10116254A1 (en) * | 2001-03-31 | 2002-10-02 | Hella Kg Hueck & Co | Headlamp assembly for a high pressure gas discharge lamp in a motor vehicle |
WO2006026943A1 (en) * | 2004-08-31 | 2006-03-16 | Patent-Treuhand- Gesellschaft Für Elektrische Glühlampen Mbh | Method for operation of a high pressure discharge lamp operating device for a high pressure discharge lamp and high pressure discharge lamp with an operating device |
WO2007068635A1 (en) * | 2005-12-16 | 2007-06-21 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Device for improving the electromagnetic compatibility of a high-pressure discharge lamp |
WO2009049674A1 (en) * | 2007-10-17 | 2009-04-23 | Osram Gesellschaft mit beschränkter Haftung | Electronic ballast and method for operating a discharge lamp |
WO2010027390A2 (en) * | 2008-09-05 | 2010-03-11 | Lutron Electronics Co., Inc. | Measurement circuit for an electronic ballast |
WO2010060842A1 (en) * | 2008-11-28 | 2010-06-03 | Osram Gesellschaft mit beschränkter Haftung | Integrated gas discharge lamp with an ignition electronics integrated into the base for generating asymmetrical ignition pulses |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7456583B2 (en) | 2006-09-05 | 2008-11-25 | General Electric Company | Electrical circuit with dual stage resonant circuit for igniting a gas discharge lamp |
US7460379B2 (en) | 2006-09-05 | 2008-12-02 | General Electric Company | Electrical circuit with voltage multiplier for facilitating ignition of a gas discharge lamp |
DE102008046163A1 (en) | 2008-09-06 | 2010-03-11 | Hella Kgaa Hueck & Co. | Ignition device i.e. superimposed-type ignition device, for igniting alternating current high-pressure gas discharge lamp in motor vehicle, has inductor with high impedance for high-frequency voltage arranged in series to voltage terminal |
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US5051665A (en) * | 1990-06-21 | 1991-09-24 | Gte Products Corporation | Fast warm-up ballast for arc discharge lamp |
GB2276714A (en) * | 1993-03-30 | 1994-10-05 | Bosch Gmbh Robert | Headlight for vehicles |
WO1995028068A1 (en) * | 1994-04-06 | 1995-10-19 | Philips Electronics N.V. | Circuit arrangement |
EP0740492A2 (en) * | 1995-04-27 | 1996-10-30 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Process and circuit for starting and operating a discharge lamp |
DE19645752A1 (en) * | 1995-11-06 | 1997-05-15 | Koito Mfg Co Ltd | Discharge lamp e.g. headlamp for motor vehicle |
US5731666A (en) * | 1996-03-08 | 1998-03-24 | Magnetek Inc. | Integrated-magnetic filter having a lossy shunt |
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 |
-
1999
- 1999-05-26 DE DE19924095A patent/DE19924095A1/en not_active Withdrawn
-
2000
- 2000-05-17 DE DE50003068T patent/DE50003068D1/en not_active Expired - Lifetime
- 2000-05-17 ES ES00110480T patent/ES2203375T3/en not_active Expired - Lifetime
- 2000-05-17 EP EP00110480A patent/EP1056315B1/en not_active Expired - Lifetime
- 2000-05-17 AT AT00110480T patent/ATE246439T1/en not_active IP Right Cessation
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US5051665A (en) * | 1990-06-21 | 1991-09-24 | Gte Products Corporation | Fast warm-up ballast for arc discharge lamp |
GB2276714A (en) * | 1993-03-30 | 1994-10-05 | Bosch Gmbh Robert | Headlight for vehicles |
WO1995028068A1 (en) * | 1994-04-06 | 1995-10-19 | Philips Electronics N.V. | Circuit arrangement |
EP0740492A2 (en) * | 1995-04-27 | 1996-10-30 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Process and circuit for starting and operating a discharge lamp |
DE19645752A1 (en) * | 1995-11-06 | 1997-05-15 | Koito Mfg Co Ltd | Discharge lamp e.g. headlamp for motor vehicle |
US5731666A (en) * | 1996-03-08 | 1998-03-24 | Magnetek Inc. | Integrated-magnetic filter having a lossy shunt |
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 |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10116254A1 (en) * | 2001-03-31 | 2002-10-02 | Hella Kg Hueck & Co | Headlamp assembly for a high pressure gas discharge lamp in a motor vehicle |
WO2006026943A1 (en) * | 2004-08-31 | 2006-03-16 | Patent-Treuhand- Gesellschaft Für Elektrische Glühlampen Mbh | Method for operation of a high pressure discharge lamp operating device for a high pressure discharge lamp and high pressure discharge lamp with an operating device |
WO2007068635A1 (en) * | 2005-12-16 | 2007-06-21 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Device for improving the electromagnetic compatibility of a high-pressure discharge lamp |
WO2009049674A1 (en) * | 2007-10-17 | 2009-04-23 | Osram Gesellschaft mit beschränkter Haftung | Electronic ballast and method for operating a discharge lamp |
WO2010027390A2 (en) * | 2008-09-05 | 2010-03-11 | Lutron Electronics Co., Inc. | Measurement circuit for an electronic ballast |
WO2010027390A3 (en) * | 2008-09-05 | 2010-04-29 | Lutron Electronics Co., Inc. | Measurement circuit for an electronic ballast having coupled resonant inductors |
US8049432B2 (en) | 2008-09-05 | 2011-11-01 | Lutron Electronics Co., Inc. | Measurement circuit for an electronic ballast |
WO2010060842A1 (en) * | 2008-11-28 | 2010-06-03 | Osram Gesellschaft mit beschränkter Haftung | Integrated gas discharge lamp with an ignition electronics integrated into the base for generating asymmetrical ignition pulses |
CN102227955A (en) * | 2008-11-28 | 2011-10-26 | 欧司朗有限公司 | Integrated gas discharge lamp with ignition electronics integrated into base for generating asymmetrical ignition pulses |
Also Published As
Publication number | Publication date |
---|---|
EP1056315B1 (en) | 2003-07-30 |
EP1056315A3 (en) | 2001-09-12 |
DE19924095A1 (en) | 2000-11-30 |
DE50003068D1 (en) | 2003-09-04 |
ES2203375T3 (en) | 2004-04-16 |
ATE246439T1 (en) | 2003-08-15 |
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