EP2327276B1 - Montage et procédé de fonctionnement d'une lampe à décharge - Google Patents

Montage et procédé de fonctionnement d'une lampe à décharge Download PDF

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Publication number
EP2327276B1
EP2327276B1 EP08804310.4A EP08804310A EP2327276B1 EP 2327276 B1 EP2327276 B1 EP 2327276B1 EP 08804310 A EP08804310 A EP 08804310A EP 2327276 B1 EP2327276 B1 EP 2327276B1
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EP
European Patent Office
Prior art keywords
switch
electronic switch
coupled
circuit arrangement
output
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Not-in-force
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EP08804310.4A
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German (de)
English (en)
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EP2327276A1 (fr
Inventor
Alois Braun
Walter Limmer
Maximilian Schmidl
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Osram GmbH
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Osram GmbH
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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
    • H05B41/282—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
    • 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
    • H05B41/282—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
    • H05B41/2825—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 by means of a bridge converter in the final stage
    • H05B41/2828—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 by means of a bridge converter in the final stage using control circuits for the switching elements
    • 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
    • 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
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • H05B41/39—Controlling the intensity of light continuously
    • H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
    • 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
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • H05B41/39—Controlling the intensity of light continuously
    • H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
    • H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations
    • H05B41/3925—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations by frequency variation

Definitions

  • the present invention relates to a circuit arrangement for operating a discharge lamp, comprising an input having a first and a second input terminal for connecting a supply voltage, a first electronic switch having a control electrode, a working electrode and a reference electrode, wherein the working electrode coupled to the first input terminal is a first diode whose anode is coupled to the second input terminal and whose cathode is coupled to form a first connection point with the reference electrode of the first electronic switch, a control device which is coupled to drive the first electronic switch with the control electrode, an output with a first and a second output terminal for providing an output voltage to the discharge lamp, an inductance arranged serially to one of the output terminals, a lamp inductor interposed between the first connection point and the first output terminal is coupled, and a first capacitor coupled between the first output terminal and the anode of the first diode, wherein the control device is adapted to the first electronic switch continuously for a turn-on time and non-conductive for a turn-off turn. It also relates to
  • Such a circuit arrangement is known from the prior art. It is essentially a buck converter with a downstream ignition device for the discharge lamp, the mentioned inductance representing the ignition inductance.
  • the mentioned inductance representing the ignition inductance.
  • US 2005/007036 A1 shows a circuit arrangement according to the preamble of claim 1.
  • the object of the present invention is, therefore, to further develop a circuit arrangement mentioned at the outset or a method mentioned at the outset in such a way that extinction of the discharge lamp is reliably prevented with low power loss.
  • the present invention is based on the finding that vibrations can occur in the output circuit as a function of the starting inductance and the first capacitor. At low lamp impedances, they are little attenuated and can interfere with lamp operation as the lamp current oscillates.
  • a measurement of the output current is provided, which is controlled by appropriate control of the first electronic switch, the output current fixed frequency peak-to-peak. If an oscillation now occurs in the output circuit, this can lead to switch-on cycles failing completely and the effective drive frequency to approach the resonance frequency, which is essentially determined by the ignition inductance and the first capacitor.
  • the control loop thus "moves into vibration". At the same time, the current can even swing into negative, causing the lamp to go out.
  • the present invention eliminates the above-mentioned problem in that in the continuous mode, the circuit arrangement is not operated almost fixed frequency, but the turn-off of the first electronic switch is varied.
  • the distance to the mentioned resonant frequency is determined and a sufficient distance is established by varying the switch-off time. This reliably prevents "pulling in” of the control loop into the oscillation. As a result, it is possible to reliably avoid extinction of the discharge lamp without the use of additional ohmic resistors for damping the output circuit.
  • the control device is designed to vary the turn-off time proportionally, in particular directly or indirectly proportionally, to the output voltage.
  • the control device is designed to shorten the turn-off time when the output voltage increases, and vice versa. If T a represents the on-time, T off the off-time, L Z the inductance arranged serially to one of the output terminals, and C 1 the capacitance of the first capacitor, the control device is designed to vary the off-time such that: 1 T one + T out ⁇ 1 2 ⁇ ⁇ ⁇ L z ⁇ C 1
  • the control device particularly preferably avoids a range of 20 percent below to 20 percent above the resonance frequency, so that the following applies: 1 T one + T out ⁇ 0 . 8th ⁇ to ⁇ 1 . 2 * 1 2 ⁇ ⁇ ⁇ L z ⁇ C 1
  • the detuning of the resonant circuit from the first capacitor and the inductance due to the impedance of the discharge lamp to be connected to the output must be taken into account in the respective above-mentioned formula. This allows particularly precise values for the frequencies to be avoided to be determined and taken into account in the control by the control device.
  • a circuit arrangement according to the invention further comprises a current measuring resistor, which is coupled between the anode of the first diode and the second input terminal, for measuring the current through the first electronic switch in its conducting state, wherein the control device is coupled to the current measuring resistor and adapted to the on-time to vary the current to a predeterminable value.
  • the switch-on time is regulated in such a way that the average current remains constant despite the different switch-off times.
  • a preferred embodiment of a circuit arrangement according to the invention further comprises a second, a third and a fourth electronic switch, wherein the first, the second, the third and the fourth electronic switch constitute a full bridge, wherein the first connection point a the first bridge center, wherein the circuit arrangement further comprises a second diode which is coupled in parallel to the first electronic switch, wherein the second electronic switch is coupled in parallel to the first diode, wherein the third and the fourth electronic switch to form a second connection point, the one represent second bridge center, are coupled together, wherein the second bridge center represents the second output terminal, wherein the control device is designed to control the first, the second, the third and the fourth electronic switch according to the invention.
  • control device is preferably designed to make the third electronic switch conductive, the fourth electronic switch and the first electronic switch nonconductive in a first phase, in a second phase the fourth electronic switch conductive, the third electronic switch and the second electronic switch non-conductive to switch, wherein the first and the second phase with a first predetermined frequency, which is in particular in the low frequency range, continuously alternate, wherein the control device is further designed, in the first phase, the second electronic switch and in the second phase, the first electronic switch with a second predetermined frequency, which is in particular in the high-frequency range, to switch alternately conductive and non-conductive and thereby to vary the turn-off depending on the measured output voltage.
  • a free-wheeling diode is connected in parallel to each of the third and fourth electronic switches.
  • the circuit arrangement comprises a second capacitor coupled between the first input terminal and the first output terminal.
  • the circuit arrangement comprises a second capacitor coupled between the first input terminal and the first output terminal.
  • Fig. 1 shows a schematic representation of a first embodiment of a circuit arrangement according to the invention.
  • This comprises an input with a first E 1 and a second input terminal E 2 , to which a supply voltage can be connected. Between the inputs, an optional capacitor C E is arranged, which serves to stabilize the input voltage.
  • the circuit arrangement comprises a first electronic switch Q 1 having a control electrode, a working electrode and a reference electrode. The working electrode is coupled to the first input terminal E 1 . Furthermore, a diode D 1 is present, the cathode of which is coupled to form a connection point N with the reference electrode of the electronic switch Q 1 .
  • the circuit arrangement further comprises an output with a first A 1 and a second output terminal A 2 , at which an output voltage U A is provided to a discharge lamp La.
  • an output voltage U A is provided to a discharge lamp La.
  • the series connection of a lamp inductor L 1 and a Zündinduktterrorism L Z is arranged.
  • the connection point between the lamp inductor L 1 and the starting inductance L Z is coupled via a capacitor C 1 to the second output terminal A 2 .
  • the anode of the diode D 1 is also coupled to the output terminal A 2 .
  • a voltage measuring device 10 For measuring the output voltage U A , a voltage measuring device 10 is provided. A quantity correlated with the measured output voltage U A is coupled to a control device 12 which is coupled to the control electrode of the electronic switch Q 1 , to control this. The controller 12 is also coupled to a current measuring device 14, which measures and provides to the controller 12 the voltage across a current measuring resistor R S coupled between the anode of the diode D 1 and the second input terminal E 2 . Dashed lines show a firing capacitor C Z1 .
  • the control device 12 is designed according to the invention to vary the turn-off time of the switch Q 1 as a function of the measured output voltage U A.
  • the variation takes place in particular in such a way that the frequency with which the switch Q 1 is driven differs from a resonance frequency and its multiples, which are essentially defined by the starting inductance L Z and the first capacitor C 1 .
  • the current flowing through the lamp inductor L 1 is denoted by I L1
  • the current flowing through the lamp La is I La
  • the current flowing through the switch Q 1 is denoted by I Q1 .
  • Fig. 2 shows a schematic representation of a second embodiment of a circuit arrangement according to the invention, wherein the circuit arrangement now has a full bridge topology.
  • Reference numerals associated with Fig. 1 have been introduced, apply to identical and equivalent components of Fig. 2 continue and will not be re-introduced.
  • the switch Q 1 has a second diode D 2 connected in parallel.
  • a second capacitor C 2 is coupled.
  • a first bridge center BM1 Between the first switch Q 1 and the second switch Q 2 is a first bridge center BM1, between the third Switch Q 3 and the fourth switch Q 4, a second bridge center BM2 formed.
  • the ignition inductance L Z is arranged between the second output terminal A 2 and the second bridge center BM2.
  • a further ignition capacitor C Z2 is shown, which may be provided as an alternative or in addition to the ignition capacitor C Z1 . This can be coupled in parallel to the two output terminals A 1 , A 2 .
  • the operation of the circuit of Fig. 2 is carried out by appropriate control of the switches Q 1 to Q 4 12 by the control device
  • the control device 12 in a first stage, controls the switch Q4 conductive, the switch Q 3, and Q 2 is not conductive.
  • the switch Q 3 In a second phase, the switch Q 3 is turned on , the switches Q 4 and Q 1 are turned off .
  • the first and the second phase alternate constantly with a first predeterminable frequency, which lies in particular in the low-frequency range.
  • the switch Q 1 and in the second phase of the switch Q 2 with a second predetermined frequency, which is in particular in the high frequency range, alternately switched conductive and non-conductive.
  • the turn-off time is varied in dependence on the measured output voltage U A in such a way that the drive frequency differs from the resonance frequency, which is essentially defined by the capacitances C 1 , C 2 and the ignition inductance L Z , and their multiples.
  • FIGS. 3 and 4 illustrate once again the considerations and findings underlying this present invention.
  • Fig. 3 the time course of various currents in a peak-to-peak regulation of the current I Q1 through the switch Q 1 . Shown is a Abschaltstromschwelle I S.
  • I S Abschaltstromschwelle
  • the switch I Q1 is switched to the non-conducting state.
  • the switch is a T and leads to an increase of the current I L1 through the lamp inductor L1.
  • the current through the lamp inductor I L1 decreases continuously, see T from . Furthermore, the current I D1 is drawn in the freewheeling phase, ie with the switch Q 1 open. Finally, the supplied to the discharge lamp La current I La , which corresponds to the average current I L1quer through the lamp inductor L 1 is entered.
  • Fig. 4 shows the situation when an oscillation occurs in the output circuit, ie the output current I La .
  • the current sensing resistor R S in the maximum of vibration an "offset", that is, the off time is reached earlier and at first the on-time T sinks.
  • T is one as before, that it is coupled at minimum more energy than the maximum.
  • energy with the natural frequency of the resonant circuit of Zündindukttechnik L Z and capacitor C 1 , C 2 is coupled.
  • the circle swings up, the offset increases in the maximum, until it is so high that at the switch-on, see t 1 of Fig. 4 , the switch Q 1 is already reached the switch-off threshold.
  • the switch Q 1 no longer turns on. All the energy is coupled in at the minimum, the circle becomes excited with its resonant frequency. In other words, the control loop "pulls itself into the vibration".

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  • Circuit Arrangements For Discharge Lamps (AREA)

Claims (13)

  1. Montage pour faire fonctionner une lampe à décharge, comprenant :
    - une entrée avec une première (E1) et une seconde borne d'entrée (E2) pour le raccordement d'une tension d'alimentation ;
    - un premier commutateur électronique (Q1), qui comprend une électrode de commande, une électrode de travail et une électrode de référence, l'électrode de travail étant reliée à la première borne d'entrée (E1) ;
    - une première diode (D1) dont l'anode est reliée à la seconde borne d'entrée (E2) et dont la cathode est reliée à l'électrode de référence du premier commutateur électronique (Q1), en formant un premier point de connexion (N) ;
    - un dispositif de commande (12) qui est relié à l'électrode de commande du premier commutateur électronique (Q1) pour commander celui-ci ;
    - une sortie avec une première (A1) et une seconde borne de sortie (A2) pour fournir une tension de sortie (UA) à la lampe à décharge (La) ;
    - une inductance (Lz) qui est branchée en série avec une des bornes de sortie (A1; A2) ;
    - une inductance de lampe (L1) qui est branchée entre le premier point de connexion (N) et la première borne de sortie (A1) ; et
    un premier condensateur (C1) qui est branché entre la première borne de sortie (A1) et l'anode de la première diode (D1) ;
    le dispositif de commande (12) étant conçu pour commuter le premier commutateur électronique (Q1) de manière continue à l'état conducteur pendant un temps de mise sous tension et non conducteur pendant un temps de mise hors tension ; le montage comprenant, en outre, un dispositif de mesure de tension (10) pour mesurer la tension de sortie (UA), le dispositif de mesure de tension (10) étant conçu pour fournir, à sa sortie, un signal qui est corrélé à la tension de sortie mesurée (UA), le dispositif de mesure de tension (10) étant relié au dispositif de commande (12) pour transmettre ce signal au dispositif de commande (12) et le dispositif de commande (12) étant conçu pour faire varier le temps de mise hors tension (Taus) en fonction de la tension de sortie mesurée (UA),
    caractérisé en ce que
    le dispositif de commande (12) est conçu pour faire varier le temps de mise hors tension (Taus) de manière proportionnelle à la tension de sortie (UA) et pour raccourcir le temps de mise hors tension (Taus) en cas d'augmentation de la tension de sortie (UA), et inversement,
    le dispositif de commande (12) étant conçu pour faire varier le temps de mise hors tension (Taus) de telle sorte que la formule 1 T ein + T aus ≠ 1 2 ⁢ π ⁢ L z ⁢ C 1
    Figure imgb0015
    soit vérifiée,
    Tein représentant le temps de mise sous tension, Taus le temps de mise hors tension, LZ l'inductance (LZ) branchée en série avec une des bornes de sortie (A1; A2) et C1 la capacité du premier condensateur (C1).
  2. Montage selon la revendication 1, caractérisé en ce que le dispositif de commande (12) est conçu pour faire varier le temps de mise hors tension (Taus) de manière directement proportionnelle.
  3. Montage selon la revendication 2, caractérisé en ce que le dispositif de commande (12) est conçu pour faire varier le temps de mise hors tension (Taus) de manière indirectement proportionnelle.
  4. Montage selon l'une des revendications précédentes,
    caractérisé en ce que la formule 1 T ein + T aus ≠ 0 , 8 bis 1 , 2 * 1 2 ⁢ π ⁢ L Z ⁢ C 1
    Figure imgb0016
    est vérifiée.
  5. Montage selon l'une des revendications 3 ou 4, caractérisé en ce que la formule 1 n * T ein + T aus ≠ 1 2 ⁢ π ⁢ L Z ⁢ C 1 ; n = 1 , 2 , 3 , … .
    Figure imgb0017
     est vérifiée.
  6. Montage selon la revendication 5, caractérisé en ce que la formule 1 n * T ein + T aus ≠ 0 , 8 bis 1 , 2 * 1 2 ⁢ π ⁢ L Z ⁢ C 1 ; n = 1 , 2 , 3 , …
    Figure imgb0018
    est vérifiée.
  7. Montage selon l'une des revendications 3 à 6, caractérisé en ce que, dans la formule respective, il est tenu compte du désaccord du circuit oscillant formé par le premier condensateur (C1) et l'inductance (LZ) par l'impédance de la lampe à décharge (La) à raccorder à la sortie.
  8. Montage selon l'une des revendications précédentes, caractérisé en ce qu'il comprend, en outre, une résistance de mesure de courant (RS) qui est branchée entre l'anode de la première diode (D1) et la seconde borne d'entrée (E2) pour mesurer le courant passant à travers le premier commutateur électronique (Q1) dans son état conducteur, le dispositif de commande (12) étant relié à la résistance de mesure de courant et étant conçu pour faire varier le temps de mise sous tension (Tein) pour régler le courant sur une valeur pouvant être prédéfinie.
  9. Montage selon la revendication 8, caractérisé en ce que le montage comprend, en outre, un deuxième (Q1), un troisième (Q4) et un quatrième commutateur électronique (Q3), le premier (Q2), le deuxième (Q1), le troisième (Q4) et le quatrième commutateurs électroniques (Q3) représentant un pont intégral, le premier point de connexion (N) représentant un premier point central de pont,
    le montage comprenant, en outre, une seconde diode (D2) qui est branchée en parallèle avec le premier commutateur électronique (Q2), le second commutateur électronique (Q1) étant branché en parallèle avec la première diode (D1), le troisième (Q4) et le quatrième (Q3) commutateurs électroniques étant reliés l'un à l'autre, en formant un second point de connexion qui représente un second point central de pont, le second point central de pont représentant la seconde borne de sortie (A2), le dispositif de commande (12) étant conçu pour commander le premier (Q2), le second (Q1), le troisième (Q4) et le quatrième (Q3) commutateurs électroniques.
  10. Montage selon la revendication 9, caractérisé en ce que le dispositif de commande (12) est conçu
    pour commuter le troisième commutateur électronique (Q4) à l'état conducteur, le quatrième commutateur électronique (Q3) et le premier commutateur électronique (Q2) à l'état non conducteur, dans une première phase,
    pour commuter le quatrième commutateur électronique (Q3) à l'état conducteur, le troisième commutateur électronique (Q4) et le deuxième commutateur électronique (Q1) à l'état non conducteur, dans une seconde phase,
    la première phase et la seconde phase alternant de manière continue à une première fréquence pouvant être prédéfinie, qui se situe notamment dans le domaine des basses fréquences,
    le dispositif de commande (12) étant en outre conçu pour commuter alternativement à l'état conducteur et non conducteur le second commutateur électronique (Q1), dans la première phase, et le premier commutateur électronique (Q2), dans la seconde phase, à une seconde fréquence pouvant être prédéfinie, qui se situe notamment dans le domaine des hautes fréquences, et faire varier ainsi le temps de mise hors tension en fonction de la tension de sortie mesurée.
  11. Montage selon l'une des revendications 9 ou 10, caractérisé en ce qu'une diode de roue libre est branchée en parallèle avec chacun des troisième (Q4) et quatrième (Q3) commutateurs électroniques.
  12. Montage selon l'une des revendications précédentes, caractérisé en ce que le montage comprend, en outre, un second condensateur (C2) qui est branché entre la première borne d'entrée (E1) et la première borne de sortie (A1).
  13. Procédé pour faire fonctionner une lampe à décharge raccordée à un montage comprenant une entrée avec une première (E1) et une seconde borne d'entrée (E2) pour le raccordement d'une tension d'alimentation ; un premier commutateur électronique (Q1), qui comprend une électrode de commande, une électrode de travail et une électrode de référence, l'électrode de travail étant reliée à la première borne d'entrée (E1) ; une première diode (D1) dont l'anode est reliée à la seconde borne d'entrée (E2) et dont la cathode est reliée à l'électrode de référence du premier commutateur électronique (Q1), en formant un premier point de connexion (N) ; un dispositif de commande (12) qui est relié à l'électrode de commande du premier commutateur électronique (Q1) pour commander celui-ci ; une sortie avec une première (A1) et une seconde borne de sortie (A2) pour fournir une tension de sortie (UA) à la lampe à décharge (La) ; une inductance (LZ) qui est branchée en série avec une des bornes de sortie (A1; A2) ; une inductance de lampe (L1) qui est branchée entre le premier point de connexion (N) et la première borne de sortie (A1) ; et un premier condensateur (C1) qui est branché entre la première borne de sortie (A1) et l'anode de la première diode (D1) ; le dispositif de commande (12) étant conçu pour commuter le premier commutateur électronique (Q1) de manière continue à l'état conducteur pendant un temps de mise sous tension (Tein) et à l'état non conducteur pendant un temps de mise hors tension (Taus) ;
    caractérisé par les étapes suivantes :
    a) mesure de la tension de sortie (UA) ;
    b) couplage au dispositif de commande (12) d'un signal qui est corrélé à la tension de sortie mesurée (UA) ; et
    c) au moyen du dispositif de commande (12) : variation du temps de mise hors tension (Taus) en fonction de la tension de sortie mesurée (UA) de sorte que le temps de mise hors tension (Taus) soit raccourci en cas d'augmentation de la tension de sortie (UA), et inversement, et que la formule 1 T ein + T aus ≠ 1 2 ⁢ π ⁢ L z ⁢ C 1
    Figure imgb0019
     soit vérifiée.
EP08804310.4A 2008-09-17 2008-09-17 Montage et procédé de fonctionnement d'une lampe à décharge Not-in-force EP2327276B1 (fr)

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Application Number Priority Date Filing Date Title
PCT/EP2008/062358 WO2010031430A1 (fr) 2008-09-17 2008-09-17 Montage et procédé de fonctionnement d'une lampe à décharge

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EP2327276A1 EP2327276A1 (fr) 2011-06-01
EP2327276B1 true EP2327276B1 (fr) 2013-06-19

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US (1) US8531122B2 (fr)
EP (1) EP2327276B1 (fr)
JP (1) JP5542824B2 (fr)
KR (1) KR20110056546A (fr)
CN (1) CN102160467B (fr)
TW (1) TW201014469A (fr)
WO (1) WO2010031430A1 (fr)

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WO2011050597A1 (fr) * 2009-11-02 2011-05-05 City University Of Hong Kong Appareil ou circuit permettant d'entraîner un matériel d'éclairage alimenté en courant continu
HUP1000062A3 (en) * 2010-01-27 2012-08-28 Gradix Holdings Ltd Apparatus for discharging and operating tube igniter
TWI586205B (zh) * 2012-11-26 2017-06-01 魏慶德 Ｌｅｄ驅動電路之直流核心電路
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US8531122B2 (en) 2013-09-10
EP2327276A1 (fr) 2011-06-01
WO2010031430A1 (fr) 2010-03-25
TW201014469A (en) 2010-04-01
JP2012503270A (ja) 2012-02-02
US20110169427A1 (en) 2011-07-14
CN102160467B (zh) 2014-01-22
KR20110056546A (ko) 2011-05-30
JP5542824B2 (ja) 2014-07-09
CN102160467A (zh) 2011-08-17

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