EP1494508B1 - Circuit amorceur universel - Google Patents

Circuit amorceur universel Download PDF

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Publication number
EP1494508B1
EP1494508B1 EP20040012534 EP04012534A EP1494508B1 EP 1494508 B1 EP1494508 B1 EP 1494508B1 EP 20040012534 EP20040012534 EP 20040012534 EP 04012534 A EP04012534 A EP 04012534A EP 1494508 B1 EP1494508 B1 EP 1494508B1
Authority
EP
European Patent Office
Prior art keywords
ignition
time
gas discharge
control circuit
igniter
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.)
Expired - Fee Related
Application number
EP20040012534
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German (de)
English (en)
Other versions
EP1494508A3 (fr
EP1494508A2 (fr
Inventor
Frank Friedrich
Stefan Reichel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Elektrobau Oschatz GmbH and Co KG
Original Assignee
Elektrobau Oschatz GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Elektrobau Oschatz GmbH and Co KG filed Critical Elektrobau Oschatz GmbH and Co KG
Publication of EP1494508A2 publication Critical patent/EP1494508A2/fr
Publication of EP1494508A3 publication Critical patent/EP1494508A3/fr
Application granted granted Critical
Publication of EP1494508B1 publication Critical patent/EP1494508B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/02—Details
    • H05B41/04—Starting switches
    • H05B41/042—Starting switches using semiconductor devices

Definitions

  • the invention relates to an ignitor for high-pressure gas discharge lamps and to a method for igniting high-pressure gas discharge lamps.
  • ballast reactors There are in practice different types of high-pressure gas discharge lamps in use, which are operated with magnetic ballasts, so-called ballast reactors. Between throttle and lamp a separate ignitor is connected, which generates so long high voltage pulses after switching on and supplies to the lamp until it ignites.
  • This basic concept can be found both in sodium vapor lamps and in metal halide lamps and other gas discharge lamps. However, these lamps have different characteristics both during ignition and, in particular, during reignition (hot ignition). While sodium vapor lamps reignite relatively well after about one minute cooling time, other lamps, such as ceramic metal halide lamps, known as ceramic burner lamps, require cooling times of up to 15 minutes.
  • ballast is known in which the number of flashing operations is counted and turns off when a maximum number is exceeded. This is to avoid continuous flashing worn lamps.
  • the EP 0 847 680 B1 only takes on the problem of switching off a lamp at the end of its life.
  • the number of lamp ignitions is counted and the ignition circuit is switched off when the lamp switches off again inadvertently after a predetermined number of lamp ignitions.
  • a gas discharge lamp ignitor which contains a programmable controller. This unit allows adjustment of the pulse size, the duration and frequency of the firing pulses according to the lamp specifications.
  • the GB 2 203 302 A discloses an ignition device for gas discharge lamps, in which a voltage characterizing the on or off state of the lamp is detected by a voltmeter in the lamp circuit. Once the lame is extinguished, voltage pulses are generated to re-ignite the lamp. If this is not successful, a renewed ignition attempt will be carried out only after a predetermined waiting time has elapsed.
  • an object of the invention to provide an ignition device, which allows the fastest possible reignition (hot ignition) of a gas discharge lamp, in particular a high-pressure gas discharge lamp. It is another object of the invention to provide a corresponding method.
  • the Z-ünd choir invention has a control circuit with a detection device that detects thermal ignition processes and distinguishes them from a cold ignition. Hot ignition processes are also referred to here as "reignition processes". Accordingly, the control circuit in this case is in a Wiederzünd istsart or synonymous in a warm ignition mode.
  • the detection device detects cold ignition processes (Erstzündvor réelle).
  • the control circuit is in a cold-start mode or synonymously "first-ignition mode".
  • the distinction between a cold-ignition process and a hot-ignition process is determined by the duration of an operating voltage interruption. Hot ignition processes are generally assumed when the operating voltage or the voltage detected by the ignitor has fallen below a given threshold value only for a short time. Depending on the design of the ignitor, periods of a few microseconds to a few seconds can be regarded as short periods of time.
  • the ignitor is designed so that it considers at least interruptions that take less than a second as short-term operating voltage interruptions, with the result that the ignitor is then operated in warm ignition mode.
  • Switching on after longer interruptions in operation is regarded as cold ignition.
  • the ignition pulses are generated immediately after switching on the operating voltage and the lamp is supplied with ignition pulses. As a rule, this ignites immediately, ie after the arrival of the first impulse.
  • the control circuit goes into a hot ignition mode in which initially no ignition pulses are delivered to the lamp but a waiting time is passed.
  • the waiting time can be, for example, 15, 20, 24 seconds or even several minutes.
  • Hot igniting may be necessary, for example, after brief interruption of the operating voltage due to unintentional switching off or as a result of interference pulses on the operating voltage.
  • the sinusoidal operating voltage may be superimposed with interference pulses that cause the lamp to go out. This is the case even if the voltage zero crossing is extended by a few milliseconds.
  • the firing pulses are clocked. For example, after 5, 12 or 15 seconds of ignition, a firing interval of e.g. 24 seconds are inserted.
  • this measure takes account of the gas discharge lamp as an undesirable heating by futile attempts at ignition avoided and also the delay of the cooling is suppressed by unsuccessful ignition attempts.
  • This measure can be used both during cold ignition and during hot ignition. This has the advantage that even supposed cold ignition processes, which can certainly strike a warm lamp even with slow-cooling lamps, such as ceramic torch lamps, allow rapid reignition.
  • the number of ignition pulses, the number of Zündimpulse or alternatively the length of time required for re-ignition is registered in particular during the hot ignition process and taken into account at the next warm ignition. This can be achieved at the next hot ignition a further reduction of Wiederzündzeit, because the ignition attempts begin shortly before the time at which the reignition is to be expected.
  • the length of the ignition attempts and the pause between them depend on the time interval to the beginning of a Wiederzündvorgangs.
  • the ignitor which is already suitable for different gas discharge lamps, automatically adapts to exotic lamps or lamps with a particularly long cooling time.
  • FIG. 1 is the diagram of a gas discharge lamp 1 and an associated ballast 2 and an ignitor 3 is illustrated.
  • the gas discharge lamp 1 is, for example, a sodium vapor lamp, a metal halide lamp or another gas discharge lamp. While one terminal is connected to a reference potential N, its other terminal is connected via an ignition pulse transformer 4 and the ballast 2 to an AC voltage-carrying line L. The reference potential N and the line L can be interchanged with each other.
  • the ballast 2 consists in the simplest case of a series reactor which serves to limit the lamp current of the gas discharge lamp 1 and to stabilize the gas discharge.
  • the Zündimpulstransformator 4 has a secondary winding which is connected between the ballast 2 and the gas discharge lamp 1.
  • the primary winding is connected to the ignitor 3.
  • the other end of the primary winding of the ignition pulse transformer 4 is connected via a breakdown switch device, such as the Sidac 7, whose other end is connected to the intermediate potential 6.
  • the latter is connected via a current limiting resistor 8 and a capacitor 9 to the reference potential N.
  • the Zündimpulstransformator 4 together with the ignitor 3, a high voltage generator 11.
  • This is associated with a control circuit 12, the terminals 13, 14 are connected in the sense of a parallel connection to the Sidac 7. Alternatively, the control circuit 12 can also be connected in parallel to the capacitor 5.
  • the control circuit 12 is a switch 15 from the perspective of the Sidacs 7, which short-circuit the Sidac 7 can to prevent the generation of ignition
  • the control circuit 12 includes an electronic circuit 16 for driving the switch 15.
  • the control circuit monitors to the voltage applied to the terminals 13, 14 voltage and evaluates them. It is formed in the preferred case by a microcontroller 17, with the off FIG. 4 is provided schematically apparent external circuit.
  • the switch 15 is formed by a thyristor with upstream Graetz bridge 18.
  • the thyristor is a load resistor 19 connected in series.
  • the microcontroller 17 controls the thyristor at its gate.
  • a resistor 21 in conjunction with a Zener diode 22 branches off the operating voltage for the microcontroller 17.
  • the Zener diode 22 may be connected in parallel with a buffer capacitor 23.
  • the Zener diode 22 can also be replaced by a voltage regulator.
  • the microcontroller 17 is associated with a detection device 24 to detect short-term operating voltage dips, which can lead or lead to an inadvertent extinction of the gas discharge lamp.
  • This detection device 24 supplies a short signal pulse to a corresponding input of the microcontroller 17 at operating voltage interruptions, which are bridged by the buffer capacitor 23, in order to signal to the latter that a re-ignition process is now pending.
  • the recognizer 24 is included in the embodiment FIG. 4 . 4a or 4b one connected to the Graetz bridge 18 and thus the unfiltered operating voltage Zener diode 25 whose other electrode (anode) with the associated input of the microcontroller 17 is connected (dashed components are optional).
  • a resistor 27 and optionally a capacitor 26 are connected to the latter, which are both connected to ground and thus in turn connected to the other end of the Graetz bridge 18.
  • the Zener diode 25 can also be replaced by a resistor.
  • the microcontroller 17 is program-controlled. Its programming takes place in the language suitable for the specific type for performing the function described below.
  • the Sidac 7 again high impedance and the capacitor 5 is in turn recharged through the resistor 8 and the capacitor 9.
  • the ignition pulse transformer therefore generates a train of ignition pulses. With a cold lamp, these usually lead immediately to the ignition of the gas discharge lamp 1. This ignites thus at the first half-wave or shortly thereafter. If the gas discharge lamp 1 burns, the voltage between the ballast 2 and the gas discharge lamp 1 drops so far that the capacitor 5 no longer reaches the breakdown voltage of the Sidacs 7. There are thus no more ignition pulses generated.
  • FIG. 5 directed.
  • the operating voltage B is turned on, which in the diagram according to FIG. 5 how a DC voltage is illustrated. This is intended to symbolize only the constant concern of the sinusoidal mains voltage.
  • the gas discharge lamp usually ignites, which is reflected in FIG FIG. 5 is symbolized with a curve branch I.
  • the control circuit 12 initially allows the supply of ignition pulses with the frequency of a few hundred Hz or a few kHz for a period of, for example, 36 seconds. After this time, the control circuit 12 closes the switch 15 by the thyristor ( FIG. 4 ) is ignited by the microcontroller 17.
  • the ignition attempts can be interrupted for a pause time of, for example, 24 seconds.
  • This game between interruption of the ignition attempts and re-ignition attempts can be repeated until the gas discharge lamp ignites, as in FIG. 5 is indicated by a Kurvenast II.
  • the Zener diode 25 transmits the operational collapse or the other interfering pulse directly to the input of the microcontroller 17, so that the latter recognizes in particular on the basis of the sudden voltage increase between the terminals 13, 14 that the gas discharge lamp 1 has meanwhile been extinguished. He now performs the start of the gas discharge lamp 1 in the operating mode "warm ignition” or “Wiederzünd istsart” by. This begins with the closing of the switch 15 which thus becomes conductive. As a result, the generation of ignition pulses since the beginning t1 of the Wiederzündvorgangs for a predetermined waiting time of, for example, 12 seconds or even 24 seconds suppressed. After that, for example, ignition pulses can be generated for 12 seconds and applied to the gas discharge lamp 1. This interplay of pause and ignition test can now be repeated continuously until the gas discharge lamp 1 ignites.
  • the voltage across the capacitor 26 drops to a low value, for example the ground potential of the microcontroller 17. This is due to the input voltage of the control circuit 12 at the terminals 13, 14, which is reduced when the gas discharge lamp is burning. However, the operating voltage of the microcontroller 17 remains completely intact. If the gas discharge lamp 1 goes out in this state, this represents a voltage jump at the terminals 13, 14, which is regarded as an input pulse for the microcontroller 17 and switches it into its second operating mode (hot ignition mode).
  • the ignitor 3 is connected to a gas discharge lamp that is difficult to re-ignite, such as, for example, a so-called ceramic burner lamp.
  • the pauses between individual ignition attempts can then be extended, for example to 52 seconds or to 1 minute.
  • the duration of the ignition attempts can be extended, for example to 24 seconds. This is in FIG. 5 illustrated in the right part of the diagram.
  • the generation of further ignition pulses as a result of the lamp voltage being reduced is omitted.
  • the control circuit 12 during re-ignition in this time range they can save this and use as the next reignition, for example, by the waiting time between t1 and the first ignition attempt is extended and by working with larger pauses between the individual ignition attempts.
  • a reset takes place after a prolonged interruption of the operating voltage so that the ignitor retains its universal usability even for faster re-igniting gas discharge lamps 1.
  • the microcontroller 17 stores the number of futile attempts at ignition and starts at the next attempt when the gas discharge lamp 1 expires unintentionally, for example, at a time t2, only with the third pulse train.
  • the number of pulse packets required to successfully fire the gas discharge lamp 1 was four. This number decreases by one is three and now determines the pulse packet with which the ignition is started.
  • variable waiting times W1, W2 are used, whereby the waiting times W1 for subsequent re-ignition attempts are based on the history and thus adapted to the previously required waiting times. Preferably, they are taken a little shorter than the previously required waiting times.
  • the number of Wiederzünd drowne occurring in a given period in case of unintentional extinction of the gas discharge lamp 1 can be monitored and any new Bachzünd bath be stopped if a given limit number is exceeded. This avoids that arrived at the end of life lamps that are prone to permanent re-extinction, are constantly re-ignited, which would cause unpleasant Blink effects.
  • FIG. 2 illustrates a modified embodiment of the circuit according to FIG. 1 , wherein for the same circuit parts based on the previous description, the same reference numerals are used.
  • the embodiment according to FIG. 2 is different from the after FIG. 1 by the arrangement of the control circuit 12 'in a lamp current carrying path.
  • FIG. 3 illustrates an embodiment of the circuit for the gas discharge lamp 1, which does not require an ignition pulse transformer.
  • the ballast 2 is provided with a tap. This tap is connected via a capacitor 28, a triac 29 and a current limiting resistor 31 or a throttle to the reference potential N.
  • the control electrode of the triac 19 is connected via a diac 32 to a voltage divider consisting of two resistors 33, 34, which taps off the lamp voltage.
  • the resistor 34 is a phase shifter capacitor 35 connected in parallel.
  • the switch 15 serves to prevent drive pulses of the triac 29 to prevent the generation of high voltage pulses. If it is open high voltage pulses are generated until the gas discharge lamp 1 ignites. If, on the other hand, it is closed, the generation of the ignition pulses is omitted.
  • the circuit 16 opens and closes the switch 15 according to the diagrams 5 and 6 and the associated description.
  • FIG. 3a illustrates a modified embodiment of the circuit for the gas discharge lamp 1, which does not require Zündimpulstransformator.
  • the ballast 2 is provided with a tap, which is connected via a capacitor 28, a triac 29 and an optional current limiting resistor 31 or alternatively a throttle to the reference potential N.
  • the control circuit 16 described above is not used here for controlling a switch 15, the Ignition pulses of the triac 29 shorts, but it controls the triac 29 directly. If the generation of Lampenzündimpulsen omitted to receive the triac 29 no more ignition pulses from the control circuit 16. It is connected to the phase shifter network consisting of the resistors 33, 34 and the capacitor 35 to generate the ignition pulses for the triac 29, if necessary.
  • the detection of warm start situations occurs as in the circuit after FIG. 4 the corresponding circuit parts are not specified here individually.
  • An ignitor is used to ignite gas discharge lamps by means of high voltage pulses.
  • the ignitor distinguishes between cold ignition and hot ignition, whereby it only starts delayed with the generation of high voltage pulses when hot igniting. This speeds up cooling and shortens the reignition time.

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Claims (24)

  1. Amorceur (3) pour lampes à décharge gazeuse haute pression (1), en particulier avec ballast électromagnétique (2), comprenant un générateur de haute tension commandable (11) qui est raccordé à la lampe à décharge gazeuse (1) pour lui délivrer des impulsions d'amorçage, comprenant un circuit de commande (12) qui est raccordé au générateur de haute tension (11) pour le commander et qui peut fonctionner dans au moins deux modes de fonctionnement différents, comprenant un dispositif de détection (24) qui fait partie du circuit de commande (12) ou qui est raccordé à celui-ci pour faire la distinction entre un processus d'amorçage et un processus de réamorçage afin d'amener le circuit de commande (12) à travailler dans un autre mode de fonctionnement lors d'un processus de réamorçage que lors d'un processus d'amorçage, la distinction entre un processus d'amorçage et un processus de réamorçage étant effectuée à partir de la durée d'une interruption de tension de fonctionnement.
  2. Amorceur selon la revendication 1, caractérisé en ce qu'un premier mode de fonctionnement est un mode de fonctionnement d'amorçage initial dans lequel le circuit de commande (12) active le générateur de haute tension (11) immédiatement après l'enclenchement de la tension de fonctionnement.
  3. Amorceur selon la revendication 1, caractérisé en ce qu'un deuxième mode de fonctionnement est un mode de fonctionnement de réamorçage dans lequel le circuit de commande (12) active le générateur de haute tension (11) après l'extinction de la lampe à décharge gazeuse (1) seulement après expiration d'un temps d'attente (W).
  4. Amorceur selon la revendication 1, caractérisé en ce que les impulsions de haute tension délivrées par le générateur de haute tension (11) sont délivrées de manière cyclique dans le temps.
  5. Amorceur selon la revendication 1, caractérisé en ce que, lors d'un processus de réamorçage, le circuit de commande (12) enregistre le temps de réamorçage qui s'écoule entre le début du réamorçage et l'amorçage effectif.
  6. Amorceur selon les revendications 3 et 5, caractérisé en ce que le temps d'attente (W1) est déterminé à partir du temps de réamorçage.
  7. Amorceur selon la revendication 6, caractérisé en ce que le temps d'attente (W1) est rendu égal au temps de réamorçage enregistré.
  8. Amorceur selon la revendication 6, caractérisé en ce que le temps d'attente (W1) est égal au temps de réamorçage enregistré moins un soustracteur d'accélération.
  9. Amorceur selon la revendication 1, caractérisé en ce que, lors d'un processus de réamorçage, le circuit de commande (12) enregistre le nombre de tentatives d'amorçage qui sont entreprises du début du réamorçage à l'amorçage effectif.
  10. Amorceur selon les revendications 3 et 5, caractérisé en ce que le temps d'attente est déterminé à partir du nombre de tentatives d'amorçage.
  11. Amorceur selon la revendication 6, caractérisé en ce que le temps d'attente est rendu égal au temps nécessaire pour le nombre de tentatives d'amorçage enregistré.
  12. Amorceur selon la revendication 6, caractérisé en ce que le temps d'attente est égal au temps obtenu à partir du nombre de tentatives d'amorçage enregistré moins un soustracteur d'accélération.
  13. Amorceur selon la revendication 1, caractérisé en ce que lorsque la lampe à décharge gazeuse (1) est en fonctionnement, le circuit de commande (12) surveille le nombre de processus de réamorçage survenant dans un intervalle de temps défini et bloque l'amorceur (3) pour des tentatives d'amorçage supplémentaires quand un nombre maximum de processus de réamorçage est dépassé.
  14. Procédé d'amorçage pour lampes à décharge gazeuse haute pression (1) au moyen d'un amorceur (3), dans lequel, dans un mode de fonctionnement d'amorçage initial au début du fonctionnement, des impulsions d'amorçage sont délivrées sans temps d'attente à la lampe à décharge gazeuse (1), une distinction étant faite entre le mode de fonctionnement d'amorçage initial et un mode de fonctionnement de réamorçage dans lequel des impulsions d'amorçage sont délivrées à la lampe à décharge gazeuse (1) seulement après expiration d'un temps d'attente, la distinction entre le mode de fonctionnement d'amorçage initial et le mode de fonctionnement de réamorçage étant effectuée à partir de la durée d'une interruption de tension de fonctionnement.
  15. Procédé d'amorçage selon la revendication 14, caractérisé en ce que les impulsions de haute tension (11) délivrées par le générateur de haute tension (11) sont délivrées de manière cyclique dans le temps.
  16. Procédé d'amorçage selon la revendication 14, caractérisé en ce que, lors d'un processus de réamorçage, le circuit de commande (12) enregistre le temps de réamorçage qui s'écoule entre le début du réamorçage et l'amorçage effectif.
  17. Procédé d'amorçage selon la revendication 14, caractérisé en ce que le temps d'attente est déterminé à partir du temps de réamorçage.
  18. Procédé d'amorçage selon la revendication 17, caractérisé en ce que le temps d'attente est rendu égal au temps de réamorçage enregistré.
  19. Procédé d'amorçage selon la revendication 17, caractérisé en ce que le temps d'attente est égal au temps de réamorçage enregistré moins un soustracteur d'accélération.
  20. Procédé d'amorçage selon la revendication 14, caractérisé en ce que lors d'un processus de réamorçage, le circuit de commande (12) enregistre le nombre de tentatives d'amorçage qui sont entreprises du début du réamorçage à l'amorçage effectif.
  21. Procédé d'amorçage selon la revendication 20, caractérisé en ce que le temps d'attente est déterminé à partir du nombre de tentatives d'amorçage.
  22. Procédé d'amorçage selon la revendication 14, caractérisé en ce que le temps d'attente est rendu égal au temps nécessaire pour le nombre de tentatives d'amorçage enregistré.
  23. Procédé d'amorçage selon la revendication 14, caractérisé en ce que le temps d'attente est égal au temps obtenu à partir du nombre de tentatives d'amorçage enregistré moins un soustracteur d'accélération.
  24. Procédé d'amorçage selon la revendication 14, caractérisé en ce que lorsque la lampe à décharge gazeuse (1) est en fonctionnement, le circuit de commande (12) surveille le nombre de processus de réamorçage survenant dans un intervalle de temps défini et bloque l'amorceur (3) pour des tentatives d'amorçage supplémentaires quand un nombre maximum de processus de réamorçage est dépassé.
EP20040012534 2003-07-03 2004-05-27 Circuit amorceur universel Expired - Fee Related EP1494508B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10330014 2003-07-03
DE2003130014 DE10330014A1 (de) 2003-07-03 2003-07-03 Universelles Zündgerät

Publications (3)

Publication Number Publication Date
EP1494508A2 EP1494508A2 (fr) 2005-01-05
EP1494508A3 EP1494508A3 (fr) 2009-05-20
EP1494508B1 true EP1494508B1 (fr) 2012-11-21

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EP20040012534 Expired - Fee Related EP1494508B1 (fr) 2003-07-03 2004-05-27 Circuit amorceur universel

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EP (1) EP1494508B1 (fr)
DE (1) DE10330014A1 (fr)
ES (1) ES2396230T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110050115A1 (en) * 2007-11-29 2011-03-03 Koninklijke Philips Electronics N.V. Method and igniter for igniting a gas discharge lamp
AT12721U1 (de) * 2011-04-22 2012-10-15 Tridonic Gmbh & Co Kg Vorrichtung zum betreiben einer hochdruckentladungslampe

Family Cites Families (13)

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Publication number Priority date Publication date Assignee Title
US4763044A (en) 1986-01-23 1988-08-09 Hubbell Incorporated Start, hot restart and operating lamp circuit
US4896077A (en) 1987-06-16 1990-01-23 Cooper Industries, Inc. Ignitor disabler
US4853599A (en) 1988-02-11 1989-08-01 Fl Industries, Inc. Cycling limiting circuitry and method for electrical apparatus
US5047694A (en) * 1989-06-30 1991-09-10 Hubbell Incorporated Lamp starting circuit
US5298837A (en) * 1992-09-22 1994-03-29 Online Energy, Inc. Ultraviolet flash dryer
DE19531623B4 (de) 1995-08-28 2010-09-23 Tridonicatco Gmbh & Co. Kg Verfahren und Schaltungsanordnung zum Zünden einer Hochdruck-Gasentladungslampe
US5594308A (en) * 1995-08-29 1997-01-14 Hubbell Incorporated High intensity discharge lamp starting circuit with automatic disablement of starting pulses
US5969483A (en) * 1998-03-30 1999-10-19 Motorola Inverter control method for electronic ballasts
US6194843B1 (en) * 1999-01-29 2001-02-27 Electro-Mag International, Inc. HID ballast with hot restart circuit
US6091208A (en) * 1999-03-30 2000-07-18 Hubbell Incorporated Lamp ignitor for starting conventional hid lamps and for starting and restarting hid lamps with hot restrike capability
IL138896A0 (en) 2000-10-05 2001-11-25 Hashofet Eltam Ein An ignitor for discharge lamps
US6642673B2 (en) * 2000-11-08 2003-11-04 Hubbell Incorporated Method and apparatus for disabling sodium ignitor upon failure of discharge lamp
DE10330013A1 (de) * 2003-07-03 2005-02-03 Elektrobau Oschatz Gmbh & Co. Kg Zündgerät mit intelligenter Abschaltung

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Publication number Publication date
ES2396230T3 (es) 2013-02-20
EP1494508A3 (fr) 2009-05-20
EP1494508A2 (fr) 2005-01-05
DE10330014A1 (de) 2005-02-03

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