EP0383831B1 - Circuit arrangement for igniting and operating gas discharge lamps - Google Patents
Circuit arrangement for igniting and operating gas discharge lamps Download PDFInfo
- Publication number
- EP0383831B1 EP0383831B1 EP89900168A EP89900168A EP0383831B1 EP 0383831 B1 EP0383831 B1 EP 0383831B1 EP 89900168 A EP89900168 A EP 89900168A EP 89900168 A EP89900168 A EP 89900168A EP 0383831 B1 EP0383831 B1 EP 0383831B1
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- European Patent Office
- Prior art keywords
- capacitor
- circuit
- parallel
- series
- choke
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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
- 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
- H05B41/16—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies
- H05B41/18—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having a starting switch
Definitions
- the invention relates to a circuit arrangement for the ignition and operation of gas discharge lamps, in particular metal halide lamps.
- ballasts for gas discharge lamps have been known for a long time.
- Each of them uses the glow starter arranged parallel to the lamp for ignition and the choke in series with the gas discharge lamp to limit the current during operation.
- glow starter and choke there is no flicker-free immediate start and the lamp also does not burn stably.
- the influence of mains voltage fluctuations on the luminous flux of the lamp is also not insignificant. Since the glow starter has a mechanical switch, which is a thermal bimetal switch, the risk of its failure is relatively great.
- the object of the invention is therefore to provide an electronic ballast especially for metal halide lamps which require a high ignition voltage in the range from 2 to 5 kV.
- the object is achieved by the invention.
- This is characterized in that on a rectified Voltage, preferably the rectified via a bridge rectifier, a buffer capacitor, preferably an electrolytic capacitor, to which a choke-capacitor series circuit is connected in parallel, the capacitor being connected in parallel with an electronic switch, preferably a transistor or thyristor, and a free-wheeling diode associated with the electronic switch and that the gas discharge lamp provided with a parallel capacitor is connected via a further choke-capacitor series circuit to the parallel circuit comprising a capacitor, an electronic switch and a freewheeling diode.
- the ignition circuit and the supply circuit are combined and can be viewed as one unit. A separate ignition circuit is therefore not necessary.
- the circuit also works independently of the supply voltage.
- the gas discharge lamp is always supplied with constant power. This also applies if the lamp voltage changes, which increases with the age of the lamp.
- One embodiment of the invention is that a further choke is provided in series for the parallel connection of capacitor, electronic switch and free-wheeling diode. This allows the size of the two existing chokes to be kept small.
- the choke of the further choke-capacitor series circuit is arranged in series with the parallel circuit of capacitor, electronic switch and free-wheeling diode. This measure makes the ballast according to the invention extremely suitable for gas discharge lamps with an ignition voltage below 2 kV.
- Fig. 1 shows the basic circuit of the electronic ballast
- Fig. 2 shows the extended circuit with three chokes
- Fig. 3 shows the circuit for lamps with an ignition voltage below 2 kV.
- a direct voltage reaches the terminals 1, 2, which is normally the mains voltage rectified by means of a bridge rectifier.
- a buffer or smoothing capacitor C4 is connected to this DC voltage.
- a choke-capacitor series circuit L1, C1 is connected in parallel with the buffer capacitor C4 in the circuit in FIG. 1.
- An electronic switch S which is usually a transistor or thyristor, and a free-wheeling diode D are connected in parallel to the capacitor C1 of this series circuit comprising L1, C1.
- the capacitor C1 has a second inductor-capacitor series circuit L2, L3 with the gas discharge lamp L in series, arranged in parallel.
- the gas discharge lamp L also has a parallel capacitor C2.
- the circuit in FIG. 2 is basically identical to that in FIG. 1, but a third inductor L3 has also been introduced. This is arranged in series with capacitor C1.
- FIG. 3 A further embodiment variant of the electronic ballast according to the invention is shown in FIG. 3. Here the capacitor C3 throttle L2 removed. Thus, only the two chokes L1, L3 are provided in this circuit.
- the circuits shown in the three figures are based on a series resonant circuit, with one main resonant circuit and one load circuit each.
- the main resonant circuit consists of the choke L1 and the capacitor C1.
- this is constructed in FIGS. 2 and 3 with the two chokes L1, L3 and the capacitor C1. 1 and 2, the inductor L2 and the two capacitors C2, C3 and in FIG. 3, since the inductor L2 is not present, the inductor L3 forms the load circuit.
- the gas discharge lamp L represents the consumer.
- the electronic switch S must excite the respective series resonant circuit in a defined manner.
- the smoothing capacitor C4 must be dimensioned in such a way that it always provides the uninterruptible supply voltage that is necessary for the resonance circuit.
- the inductances of the chokes L1, L2 and the capacitors of the capacitors C1, C2 must be in a certain relationship to each other.
- the choke L2 in FIGS. 1 and 2 is used to adapt the voltage relationships in the load circuit and on the gas discharge lamp L, and to compensate for the phase position of the main resonant circuit. 3, the throttle L3 takes over the above task of the throttle L2.
- the additional choke L3 in FIG. 2 is necessary for fine-tuning the series resonant circuit in the case of unstable consumers.
- the negative potential of the DC voltage was chosen as the common reference point. It could also be called common reference point the positive potential can be used, whereby the function of the circuit is completely preserved.
- the gas discharge lamp Before ignition or at the time of ignition, the gas discharge lamp represents a high-impedance load.
- the circuits work as step-up converters or as high-voltage ignition generators, with several kV high voltages being generated depending on the dimensions.
- the frequency-determining components in the series resonance circuit are the capacitances of the capacitors C1, C2, C3 in addition to the inductance of the inductor L2 in FIG. 1, the inductance of the inductors L2, L3 and in FIG Inductance of the choke L3.
- the frequency of these resonance circuits when fired is a multiple of that of the respective main resonant circuit.
- the gas discharge lamp L ignites as a result of a high voltage built up on the capacitor C2, it suddenly breaks down on this capacitor C2 and on the gas discharge lamp L.
- the resonant circuit frequency is reduced to that of the main resonant circuit. Then only the operating voltage of the gas discharge lamp L is present at the capacitor C2.
- the circuits in the three figures now work as step-down converters, with the maximum resonant circuit voltage being distributed across the components in the load circuit. The energy required for the operation of the gas discharge lamp L is transferred from the main resonant circuit to the load circuit and made available to the lamp L.
Abstract
Description
Die Erfindung betrifft eine Schaltungsanordnung für die Zündung und den Betrieb von Gasentladungslampen, insbesondere Metalldampflampen.The invention relates to a circuit arrangement for the ignition and operation of gas discharge lamps, in particular metal halide lamps.
Seit langem sind die verschiedensten Schaltungen für Vorschaltgeräte von Gasentladungslampen bekannt. Jede davon verwendet zum Zünden den parallel zur Lampe angeordneten Glimmstarter und zur Strombegrenzung während des Betriebes die in Serie zur Gasentladungslampe liegende Drossel. Bei diesen Anordnungen mit Glimmstarter und Drossel erfolgt kein flackerfreier Sofortstart und außerdem brennt die Lampe nicht stabil. Der Einfluß von Netzspannungsschwankungen auf den Lichtstrom der Lampe ist ebenfalls nicht unbeträchtlich. Da der Glimmstarter einen mechanischen Schalter, der ein Thermo-Bimetallschalter ist, aufweist, ist die Gefahr für dessen Ausfall relativ groß.Various circuits for ballasts for gas discharge lamps have been known for a long time. Each of them uses the glow starter arranged parallel to the lamp for ignition and the choke in series with the gas discharge lamp to limit the current during operation. In these arrangements with glow starter and choke, there is no flicker-free immediate start and the lamp also does not burn stably. The influence of mains voltage fluctuations on the luminous flux of the lamp is also not insignificant. Since the glow starter has a mechanical switch, which is a thermal bimetal switch, the risk of its failure is relatively great.
Zur Vermeidung dieser Nachteile wurden elektronische Vorschaltgeräte entwickelt. Eine diesbezügliche Schaltung ist in der DE-PS 31 52 342 beschrieben. Diese besteht aus einer Stromquelle, einer Zündschaltung, einem Steuerelement und einer Hilfsspannungsquelle. Ein solches Vorschaltgerät ist jedoch sehr bauteilaufwendig und daher manchmal auch recht störanfällig. Außerdem ist es hauptsächlich für Leuchtstofflampen konzipiert, die eine niedrigere Zündspannung als die Metalldampflampen benötigen. Es ist daher dieses Vorschaltgerät für Metalldampflampen vollkommen ungeeignet.Electronic ballasts have been developed to avoid these disadvantages. A related circuit is described in DE-PS 31 52 342. This consists of a current source, an ignition circuit, a control element and an auxiliary voltage source. However, such a ballast is very complex and therefore sometimes prone to failure. In addition, it is mainly designed for fluorescent lamps that require a lower ignition voltage than metal halide lamps. This ballast is therefore completely unsuitable for metal halide lamps.
Die Aufgabe der Erfindung besteht daher darin, ein elektronisches Vorschaltgerät speziell für Metalldampflampen die eine hohe Zündspannung im Bereich von 2 bis 5 kV benötigen, zu schaffen.The object of the invention is therefore to provide an electronic ballast especially for metal halide lamps which require a high ignition voltage in the range from 2 to 5 kV.
Die Aufgabe wird durch die Erfindung gelöst. Diese ist dadurch gekennzeichnet, daß an einer gleichgerichteten Spannung, vorzugsweise die über einen Brückengleichrichter gleichgerichtete Netzspannung, ein Pufferkondensator, vorzugsweise Elektrolytkondensator, angeschlossen ist, dem eine Drossel-Kondensator-Serienschaltung parallel liegt, wobei dem Kondensator ein elektronischer Schalter, vorzugsweise Transistor oder Thyristor, und eine zum elektronischen Schalter gehörige Freilaufdiode parallel geschaltet ist, und daß die mit einem Parallelkondensator versehene Gasentladungslampe über eine weitere Drossel-Kondensator-Serienschaltung an die Parallelschaltung aus Kondensator, elektronischem Schalter und Freilaufdiode angeschlossen ist. Bei diesem neuartigen Vorschaltgerät ist der Zündkreis und der Versorgungskreis kombiniert und kann als eine Einheit betrachtet werden. Es ist daher auch kein eigener Zündkreis notwendig. Die Schaltung arbeitet außerdem unabhängig von der Versorgungsspannung. Weiters wird die Gasentladungslampe immer mit konstanter Leistung versorgt. Dies auch dann, wenn sich die Lampenbrennspannung ändert, welche mit dem Alter der Lampe steigt.The object is achieved by the invention. This is characterized in that on a rectified Voltage, preferably the rectified via a bridge rectifier, a buffer capacitor, preferably an electrolytic capacitor, to which a choke-capacitor series circuit is connected in parallel, the capacitor being connected in parallel with an electronic switch, preferably a transistor or thyristor, and a free-wheeling diode associated with the electronic switch and that the gas discharge lamp provided with a parallel capacitor is connected via a further choke-capacitor series circuit to the parallel circuit comprising a capacitor, an electronic switch and a freewheeling diode. With this new ballast, the ignition circuit and the supply circuit are combined and can be viewed as one unit. A separate ignition circuit is therefore not necessary. The circuit also works independently of the supply voltage. Furthermore, the gas discharge lamp is always supplied with constant power. This also applies if the lamp voltage changes, which increases with the age of the lamp.
Eine Ausgestaltung der Erfindung besteht darin, daß in Serie zur Parallelschaltung aus Kondensator, elektronischem Schalter und Freilaufdiode eine weitere Drossel vorgesehen ist. Dadurch kann die Baugröße der beiden bereits vorhandenen Drosseln klein gehalten werden.One embodiment of the invention is that a further choke is provided in series for the parallel connection of capacitor, electronic switch and free-wheeling diode. This allows the size of the two existing chokes to be kept small.
Von Vorteil ist, daß die Drossel der weiteren Drossel-Kondensator-Serienschaltung in Serie zur Parallelschaltung aus Kondensator, elektronischem Schalter und Freilaufdiode angeordnet ist. Durch diese Maßnahme eignet sich das erfindungsgemäße Vorschaltgerät ausgezeichnet für Gasentladungslampen mit einer Zündspannung unter 2 kV.It is advantageous that the choke of the further choke-capacitor series circuit is arranged in series with the parallel circuit of capacitor, electronic switch and free-wheeling diode. This measure makes the ballast according to the invention extremely suitable for gas discharge lamps with an ignition voltage below 2 kV.
Unter Zuhilfenahme der Zeichnung wird die Erfindung nun noch näher erläutert. Die Fig. 1 zeigt die grundlegende Schaltung des elektronischen Vorschaltgerätes, die Fig. 2 die erweiterte Schaltung mit drei Drosseln und Fig. 3 die Schaltung für Lampen mit einer Zündspannung unter 2 kV.With the aid of the drawing, the invention will now be explained in more detail. Fig. 1 shows the basic circuit of the electronic ballast, Fig. 2 shows the extended circuit with three chokes and Fig. 3 shows the circuit for lamps with an ignition voltage below 2 kV.
Bei allen drei Figuren gelangt an die Klemmen 1, 2 eine Gleichspannung, welche im Normalfall die mittels eines Brückengleichrichters gleichgerichtete Netzspannung ist. An dieser Gleichspannung liegt ein Puffer- bzw. Glättungskondensator C4.In all three figures, a direct voltage reaches the
Dieser ist meist ein Elektrolytkondensator mit einem großen Kapazitätswert. Eine Drossel-Kondensator-Serienschaltung L1, C1 ist bei der Schaltung in Fig. 1 dem Pufferkondensator C4 parallel geschaltet. Dem Kondensator C1 dieser Serienschaltung aus L1, C1 ist ein elektronischer Schalter S, der üblicherweise ein Transistor oder Thyristor ist, sowie eine Freilaufdiode D parallel geschaltet. Weiters ist bei der Schaltung des elektronischen Vorschaltgerätes entsprechend Fig. 1 dem Kondensator C1 eine zweite Drossel-Kondensator-Serienschaltung L2, L3 mit der Gasentladungslampe L in Reihe, parallel angeordnet. Die Gasentladungslampe L weist noch einen Parallelkondensator C2 auf.This is usually an electrolytic capacitor with a large capacitance value. A choke-capacitor series circuit L1, C1 is connected in parallel with the buffer capacitor C4 in the circuit in FIG. 1. An electronic switch S, which is usually a transistor or thyristor, and a free-wheeling diode D are connected in parallel to the capacitor C1 of this series circuit comprising L1, C1. Furthermore, when the electronic ballast is connected in accordance with FIG. 1, the capacitor C1 has a second inductor-capacitor series circuit L2, L3 with the gas discharge lamp L in series, arranged in parallel. The gas discharge lamp L also has a parallel capacitor C2.
Die Schaltung in Fig. 2 ist grundsätzlich identisch mit jener in Fig. 1, jedoch wurde eine dritte Drossel L3 zusätzlich eingeführt. Diese ist in Serie zum Kondensator C1 angeordnet.The circuit in FIG. 2 is basically identical to that in FIG. 1, but a third inductor L3 has also been introduced. This is arranged in series with capacitor C1.
Eine weitere Ausführungsvariante des erfindungsgemäßen elektronischen Vorschaltgerätes ist in Fig. 3 dargestellt. Hierbei wurde die in Serie zum Kondensator C3 liegende Drossel L2 entfernt. Es sind somit in dieser Schaltung nur die beiden Drosseln L1, L3 vorgesehen.A further embodiment variant of the electronic ballast according to the invention is shown in FIG. 3. Here the capacitor C3 throttle L2 removed. Thus, only the two chokes L1, L3 are provided in this circuit.
Die aus den drei Figuren ersichtlichen Schaltungen, basieren auf einem Serienresonanzkreis, wobei je ein Hauptschwingkreis und ein Lastkreis vorhanden sind. Bei Fig. 1 besteht der Hauptschwingkreis aus der Drossel L1 und dem Kondensator C1. Hingegen ist dieser bei den Fig. 2 und 3 mit den beiden Drosseln L1, L3 und dem Kondensator C1 aufgebaut. Den Lastkreis bilden in den Fig. 1 und 2 die Drossel L2 und die beiden Kondensatoren C2, C3 und in Fig. 3 gehört, da die Drossel L2 nicht vorhanden ist, die Drossel L3 zum Lastkreis. Die Gasentladungslampe L stellt den Verbraucher dar. Der elektronische Schalter S muß den jeweiligen Serienresonanzkreis definiert anregen. Der Glättungskondensator C4 muß so dimensioniert sein, daß er immer die für den Resonanzkreis notwendige und vorallem unterbrechungsfreie Versorgungsspannung zur Verfügung stellt. Für ein stabiles Schwingungsverhalten des Serienresonanzkreises müssen die Induktivitäten der Drosseln L1, L2, sowie die Kapazitäten der Kondensatoren C1, C2 in einem bestimmten Verhältnis zueinander stehen. Die Drossel L2 in Fig. 1 und Fig. 2 dient zur Anpassung der Spannungsverhältnisse im Lastkreis und an der Gasentladungslampe L, sowie zur Kompensation der Phasenlage des Hauptschwingkreises. Bei der Schaltung des Vorschaltgerätes entsprechend Fig. 3 übernimmt die Drossel L3 die obige Aufgabe der Drossel L2.The circuits shown in the three figures are based on a series resonant circuit, with one main resonant circuit and one load circuit each. In Fig. 1, the main resonant circuit consists of the choke L1 and the capacitor C1. In contrast, this is constructed in FIGS. 2 and 3 with the two chokes L1, L3 and the capacitor C1. 1 and 2, the inductor L2 and the two capacitors C2, C3 and in FIG. 3, since the inductor L2 is not present, the inductor L3 forms the load circuit. The gas discharge lamp L represents the consumer. The electronic switch S must excite the respective series resonant circuit in a defined manner. The smoothing capacitor C4 must be dimensioned in such a way that it always provides the uninterruptible supply voltage that is necessary for the resonance circuit. For a stable vibration behavior of the series resonance circuit, the inductances of the chokes L1, L2 and the capacitors of the capacitors C1, C2 must be in a certain relationship to each other. The choke L2 in FIGS. 1 and 2 is used to adapt the voltage relationships in the load circuit and on the gas discharge lamp L, and to compensate for the phase position of the main resonant circuit. 3, the throttle L3 takes over the above task of the throttle L2.
Die zusätzliche Drossel L3 in Fig. 2 ist zur Feinabstimmung des Serienresonanzkreises bei unstabilen Verbrauchern notwendig.The additional choke L3 in FIG. 2 is necessary for fine-tuning the series resonant circuit in the case of unstable consumers.
Bei den Schaltungen in den drei Figuren wurde als gemeinsamer Bezugspunkt jeweils das negative Potential der Gleichspannung gewählt. Es könnte auch als gemeinsamer Bezugspunkt das positive Potential herangezogen werden, wobei die Funktion der Schaltung vollkommen erhalten bleibt.In the circuits in the three figures, the negative potential of the DC voltage was chosen as the common reference point. It could also be called common reference point the positive potential can be used, whereby the function of the circuit is completely preserved.
Abschließend wird nun noch die Arbeitsweise der Schaltung beim Zünden und im Betrieb erklärt.Finally, the operation of the circuit during ignition and operation is explained.
Vor dem Zünden, bzw. zum Zeitpunkt des Zündens stellt die Gasentladungslampe eine hochohmige Last dar. Die Schaltungen arbeiten in diesem Betriebsfall als Aufwärtswandler bzw. als Hochspannungszündgeneratoren, wobei je nach Dimensionierung mehrere kV Hochspannung erzeugt werden.Before ignition or at the time of ignition, the gas discharge lamp represents a high-impedance load. In this operating mode, the circuits work as step-up converters or as high-voltage ignition generators, with several kV high voltages being generated depending on the dimensions.
Die frequenzbestimmenden Komponenten im Serienresonanzkreis sind zum Zündzeitpunkt bei allen drei Schaltungen die Kapazitäten der Kondensatoren C1, C2, C3, zuzüglich bei Fig. 1 der Induktivität der Drossel L2, bei Fig. 2 der Induktivitäten der Drosseln L2, L3 und bei Fig. 3 der Induktivität der Drossel L3. Die Frequenz dieser Resonanzkreise beträgt beim Zünden dein Vielfaches jener des jeweiligen Hauptschwingkreises. Durch entsprechende Dimensionierung des Kondensators C2 in Abhängigkeit vom Kondensator C1 wird an der Gasentladungslampe L, sowie am Kondensator C2 selbst eine Hochspannung von mehreren kV erzeugt, wodurch die Gasentladungslampe L zündet.The frequency-determining components in the series resonance circuit are the capacitances of the capacitors C1, C2, C3 in addition to the inductance of the inductor L2 in FIG. 1, the inductance of the inductors L2, L3 and in FIG Inductance of the choke L3. The frequency of these resonance circuits when fired is a multiple of that of the respective main resonant circuit. By appropriately dimensioning the capacitor C2 as a function of the capacitor C1, a high voltage of several kV is generated on the gas discharge lamp L and on the capacitor C2 itself, as a result of which the gas discharge lamp L ignites.
Zündet die Gasentladungslampe L infolge einer am Kondensator C2 aufgebauten Hochspannung, so bricht diese an diesem Kondensator C2 und an der Gasentladungslampe L schlagartig zusammen. Die Schwingkreisfrequenz reduziert sich dabei auf jene des Hauptschwingkreises. Am Kondensator C2 liegt dann nur mehr die Betriebsspannung der Gasentladungslampe L an. Die Schaltungen in den drei Figuren arbeiten jetzt als Abwärtswandler, wobei sich die maximale Schwingkreisspannung an den Komponenten im Lastkreis aufteilt. Die notwendige Energie für den Betrieb der Gasentladungslampe L wird vom Hauptschwingkreis in den Lastkreis umgeladen und der Lampe L zur Verfügung gestellt.If the gas discharge lamp L ignites as a result of a high voltage built up on the capacitor C2, it suddenly breaks down on this capacitor C2 and on the gas discharge lamp L. The resonant circuit frequency is reduced to that of the main resonant circuit. Then only the operating voltage of the gas discharge lamp L is present at the capacitor C2. The circuits in the three figures now work as step-down converters, with the maximum resonant circuit voltage being distributed across the components in the load circuit. The energy required for the operation of the gas discharge lamp L is transferred from the main resonant circuit to the load circuit and made available to the lamp L.
Claims (3)
- Circuit arrangement for igniting and operating gas-discharge lamps, particularly metal-vapor lamps, characterized in that a buffer capacitor (C4), preferably an electrolytic capacitor, is connected to a rectified voltage (1, 2), preferably the mains voltage rectified by means of a bridge rectifier, a choke-capacitor series circuit (L1, C1) being connected in parallel with the buffer capacitor, whereby an electronic switch (S), preferably a transistor or thyristor, and a fast recovery diode (D) forming part of the electronic switch are connected in parallel with the capacitor (C1), and that the gas-discharge lamp (L) provided with a parallel capacitor (C2) is connected by means of a further choke-capacitor series circuit (L2, C3) to the parallel circuit consisting of capacitor (C1), electronic switch (S) and fast recovery diode (D).
- Circuit arrangement according to claim 1, characterized in that a further choke (L3) is provided in series with the parallel circuit consisting of capacitor (C1), electronic switch (S) and fast recovery diode (D).
- Circuit arrangement according to claim 1, characterized in that the choke (L2) of the further choke-capacitor series circuit (L2, C3) is arranged in series with the parallel circuit consisting of capacitor (C1), electronic switch (S) and fast recovery diode (D).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT3348/87 | 1987-12-18 | ||
| AT0334887A AT397326B (en) | 1987-12-18 | 1987-12-18 | CIRCUIT FOR THE IGNITION AND OPERATION OF GAS DISCHARGE LAMPS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0383831A1 EP0383831A1 (en) | 1990-08-29 |
| EP0383831B1 true EP0383831B1 (en) | 1994-01-26 |
Family
ID=3549182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP89900168A Expired - Lifetime EP0383831B1 (en) | 1987-12-18 | 1989-07-05 | Circuit arrangement for igniting and operating gas discharge lamps |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US5057752A (en) |
| EP (1) | EP0383831B1 (en) |
| JP (1) | JPH03501790A (en) |
| AT (1) | AT397326B (en) |
| AU (1) | AU619236B2 (en) |
| DE (1) | DE3887527D1 (en) |
| DK (1) | DK147990A (en) |
| FI (1) | FI93297C (en) |
| HU (1) | HU206175B (en) |
| NO (1) | NO174449C (en) |
| WO (1) | WO1989006085A1 (en) |
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| US5339004A (en) * | 1991-10-02 | 1994-08-16 | First Lighting, Inc. | Regulating ballast with power factor correction for high-frequency gaseous discharge lamps |
| US5426350A (en) * | 1993-11-18 | 1995-06-20 | Electric Power Research Institute, Inc. | High frequency transformerless electronics ballast using double inductor-capacitor resonant power conversion for gas discharge lamps |
| US5459377A (en) * | 1993-12-28 | 1995-10-17 | Yue Zheng | Method for starting gas-conducting lamp and lamp for carrying out the method |
| DE19530746A1 (en) * | 1995-08-22 | 1997-02-27 | Bosch Gmbh Robert | Circuit arrangement for operating a high-pressure gas discharge lamp with alternating current |
| US5798615A (en) * | 1996-08-30 | 1998-08-25 | Unitrend Power Technology, Corp. | Universal high intensity discharge electronic starter |
| US6147455A (en) * | 1999-06-02 | 2000-11-14 | General Electric Company | Gas discharge lamp ballast circuit with electronic starter |
| US6153983A (en) * | 1999-07-21 | 2000-11-28 | General Electric Company | Full wave electronic starter |
| US6597128B2 (en) | 2001-10-03 | 2003-07-22 | Hubbell Incorporated | Remote discharge lamp ignition circuitry |
| JP4697076B2 (en) * | 2006-07-12 | 2011-06-08 | 富士ゼロックス株式会社 | Image forming apparatus and replacement parts thereof |
| WO2012164588A1 (en) * | 2011-05-31 | 2012-12-06 | Giacomo Srl | High-efficiency electronic device for turning on and power supplying of lamps |
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| GB2057795A (en) * | 1979-08-07 | 1981-04-01 | Eleco Ltd | Improvements in or relating to operating circuits for electric discharge lamps |
| AT369609B (en) * | 1980-09-11 | 1983-01-25 | Elger Elektro Neon | CIRCUIT ARRANGEMENT FOR THE OPERATION OF GAS DISCHARGE LAMPS |
| DE3108547A1 (en) * | 1981-03-06 | 1982-10-07 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München | "IGNITION SWITCH FOR A HIGH PRESSURE METAL STEAM DISCHARGE LAMP" |
| DE3327030A1 (en) * | 1983-07-27 | 1985-02-07 | Philips Patentverwaltung Gmbh, 2000 Hamburg | CIRCUIT ARRANGEMENT FOR OPERATING HIGH PRESSURE GAS DISCHARGE LAMPS |
| DE3420229A1 (en) * | 1984-05-30 | 1985-12-05 | Frank 3013 Barsinghausen Hansmann | Circuit arrangement for operating metal-vapour discharge lamps |
| US4683404A (en) * | 1986-09-29 | 1987-07-28 | Cooper Industries | Starting circuit and apparatus for high pressure sodium lamps |
| GB2204751B (en) * | 1987-04-22 | 1991-06-26 | Davis Group Ltd | Discharge lamp circuits |
| EP0337554A1 (en) * | 1988-04-13 | 1989-10-18 | Koninklijke Philips Electronics N.V. | Switching arrangement |
-
1987
- 1987-12-18 AT AT0334887A patent/AT397326B/en not_active IP Right Cessation
-
1988
- 1988-12-16 US US07/474,802 patent/US5057752A/en not_active Expired - Fee Related
- 1988-12-16 HU HU89392A patent/HU206175B/en not_active IP Right Cessation
- 1988-12-16 JP JP1500275A patent/JPH03501790A/en active Pending
- 1988-12-16 DE DE89900168T patent/DE3887527D1/en not_active Expired - Fee Related
- 1988-12-16 AU AU27953/89A patent/AU619236B2/en not_active Ceased
- 1988-12-16 WO PCT/AT1988/000113 patent/WO1989006085A1/en active IP Right Grant
-
1989
- 1989-07-05 EP EP89900168A patent/EP0383831B1/en not_active Expired - Lifetime
-
1990
- 1990-06-14 FI FI902988A patent/FI93297C/en not_active IP Right Cessation
- 1990-06-15 NO NO902691A patent/NO174449C/en unknown
- 1990-06-15 DK DK147990A patent/DK147990A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AT397326B (en) | 1994-03-25 |
| FI93297B (en) | 1994-11-30 |
| NO174449B (en) | 1994-01-24 |
| ATA334887A (en) | 1993-07-15 |
| AU619236B2 (en) | 1992-01-23 |
| FI902988A0 (en) | 1990-06-14 |
| AU2795389A (en) | 1989-07-19 |
| NO902691D0 (en) | 1990-06-15 |
| NO174449C (en) | 1994-05-04 |
| DK147990D0 (en) | 1990-06-15 |
| FI93297C (en) | 1995-03-10 |
| DE3887527D1 (en) | 1994-03-10 |
| NO902691L (en) | 1990-06-15 |
| HUT58437A (en) | 1992-02-28 |
| WO1989006085A1 (en) | 1989-06-29 |
| DK147990A (en) | 1990-06-15 |
| JPH03501790A (en) | 1991-04-18 |
| HU206175B (en) | 1992-08-28 |
| US5057752A (en) | 1991-10-15 |
| EP0383831A1 (en) | 1990-08-29 |
| HU890392D0 (en) | 1991-11-28 |
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