EP0671866B1 - Circuit d'alimentation d'une lampe à décharge; son utilisation ainsi qu'un procédé associé - Google Patents

Circuit d'alimentation d'une lampe à décharge; son utilisation ainsi qu'un procédé associé Download PDF

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Publication number
EP0671866B1
EP0671866B1 EP94118802A EP94118802A EP0671866B1 EP 0671866 B1 EP0671866 B1 EP 0671866B1 EP 94118802 A EP94118802 A EP 94118802A EP 94118802 A EP94118802 A EP 94118802A EP 0671866 B1 EP0671866 B1 EP 0671866B1
Authority
EP
European Patent Office
Prior art keywords
ignition
lamp
switch
phase
power supply
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 - Lifetime
Application number
EP94118802A
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German (de)
English (en)
Other versions
EP0671866A2 (fr
EP0671866A3 (fr
Inventor
Volker Adam
Helmut Gellweiler
Walter Dieudonné
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.)
Heraeus Noblelight GmbH
Original Assignee
Heraeus Noblelight GmbH
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 Heraeus Noblelight GmbH filed Critical Heraeus Noblelight GmbH
Publication of EP0671866A2 publication Critical patent/EP0671866A2/fr
Publication of EP0671866A3 publication Critical patent/EP0671866A3/fr
Application granted granted Critical
Publication of EP0671866B1 publication Critical patent/EP0671866B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H05B41/14—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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S315/00—Electric lamp and discharge devices: systems
    • Y10S315/07—Starting and control circuits for gas discharge lamp using transistors

Definitions

  • Power supply circuit for a discharge lamp with electrodes, one of which as Glow electrode connectable to a controllable device for generating a heating current is that via an output with the electrode of the discharge lamp designed as a glow electrode is connected, as well as with a current limit and an ignition device, the electrodes of the discharge path of the lamp being connected to a direct current source are and the ignition device from the series connection of an ignition voltage generator, a series resistor and the switching path of a switch, the with a capacitor connected to the series resistor output of the ignition voltage generator is connected in parallel, and the use of such a power supply circuit and a method for operating a discharge lamp.
  • From DE 32 05 256 A1 is a circuit for controlling the on the cathode of a deuterium lamp Applied power known, extending life and DC voltage between cathode to reduce photometric noise and applying the anode of the lamp to support the arc current through the tube; furthermore, a separate AC voltage is applied across the cathode by means of an AC amplitude control circuit placed, which controls the amplitude of the alternating current.
  • a potential becomes proportional while the cathode is at room temperature to the alternating current through the cathode compared to a potential, the proportional the AC voltage drop across the cathode in a functional amplifier circuit, wherein the output signals are used to operate a display device.
  • the output signals of the functional amplifier circuit for control the power applied to the cathode by the AC amplitude control circuit.
  • precise timing of the heating phase and ignition phase is not without further possible, so that the commissioned lamp experiences only a minimal load would.
  • From DE-PS 31 08 547 is an ignition circuit for a high pressure metal vapor discharge lamp known, with the ignition pulses using a symmetrically switching four-layer diode or a correspondingly controlled triac via a pulse transformer to the electrodes the discharge path of the discharge lamp is forwarded; in practice there are Circuit arrangements only for the ignition of AC-powered discharge lamps applicable while being used for direct current discharge lamps such as Deuterium or hydrogen lamps are not suitable.
  • DE-PS 14 89 350 describes a gas discharge lamp with a gas filling of deuterium or hydrogen gas, which is a device for designing the under (B) indicated procedure.
  • ignition methods are in this patent Heating a bi-metal strip known in the cold between the anode and the housing surrounding the anode is in electrical contact and with current flow by means of preionization and glow discharge from the housing, whereupon the gas discharge lamp is ignited; proves to be problematic with such gas discharge lamps the relatively strong heating of the gas filling in the flask, being especially for smaller apertures, for example apertures with a Diameter of less than 0.5 mm makes the ignition of deuterium lamps very difficult becomes; in addition, there is a renewed ignition of an already preheated gas discharge lamp extremely difficult.
  • the object of the invention is to provide a discharge lamp, in particular a hydrogen lamp, or deuterium discharge lamp with a heated electrode with high reliability ignite less heat after the start of the heating phase; should also deuterium or hydrogen discharge lamps with an aperture diameter smaller than 0.5 mm are to be ignited with a high degree of certainty preheated deuterium or hydrogen lamps can be reached with high reliability his.
  • Timing of the ignition whereby the overlapping phase is precisely defined in terms of time of heating and ignition phase an ignition process with high precision also for deuterium lamps with an aperture in the range of 0.3 to 0.5 mm and smaller is ensured; Farther it proves to be advantageous that the lamp with high security even when hot can be re-ignited and that even with specimen scatter in predetermined manufacturing tolerances reliable ignition is possible.
  • the timing of Heating and ignition phase is available from a read-only memory, so that inexpensive and reliable components for the exact timing are available.
  • Figure 1 shows a power supply circuit for a deuterium lamp
  • FIG. 2 shows a time diagram for the heating and ignition phase of the deuterium lamp.
  • the deuterium lamp 1 has two schematically shown in its lamp bulb Electrodes 2, 3, of which electrode 2 serves as an anode, while electrode 3 is designed as a glow electrode and serves as a cathode; one end of the helix of the cathode 3 is connected to ground 4, while the other end of the helix with connection 5 of Power supply circuit 6 is connected; the electrode 2 serving as the anode is over Terminal 8 connected to the power supply circuit 6. Since this is a schematic representation of the lamp structure is for a better understanding of constructive design of such a lamp on the already mentioned DE-PS 39 08 553.
  • the power supply circuit 6 includes a constant current source as a direct current source 10, a series circuit of ignition voltage generator 12, series resistor 13 and electronic Switch 14, which is in series with the discharge path formed by electrodes 2 and 3 the lamp 1 are connected; between output 16 of the ignition voltage generator 12 and Series resistor 13 is connected in parallel with the output 16, a capacitor 17, which is connected to a Electrode plate at ground potential 4, i.e. is at the potential of the cathode 3.
  • the electronic switch 14 is designed as an optotriac, the between the connections 18 and 19 lying switching path is actuated with the aid of a control signal, which the control connections 20, 21 are fed to the control input of the electronic switch 14 becomes; the control signal within the switch 14 is optically opened by means of the photodiode 29 transmit the four-layer diode in the radiation area according to the optocoupler principle, so that a potential separation between control signal and switching pulse is achieved.
  • the control the switch 14 takes place via the connection contacts 22, 23 of the Power supply circuit 6.
  • the ignition voltage generator 12 is supplied with power via connection contact 25, while the on-off signal for the ignition voltage generator is supplied via terminal contact 26.
  • the power supply to the heating coil of the electrode 3 takes place via connection contact 27 of the power supply circuit 6 by an external, likewise controllable supply unit.
  • diagram A shows the time profile of the electrode heating via connection 27 according to FIG. 1, which is referred to as heating phase H
  • diagram B shows the drive pulse designated as ignition phase Z via connections 22, 23 according to FIG. 1 and diagram C, the overlap phase U of the heating phase H according to A. and the ignition phase Z according to B over time t.
  • a broad overlap pulse U ' is shown as an example in diagram D, as it results from an ignition phase Z' beginning at time t 2 'according to the dashed representation of diagram B; the end of both ignition phases Z and Z 'is the time t 4 .
  • the heating phase H begins by actuating the external supply unit and the heating current flowing via connection 27 for preheating the electrode 3.
  • an ignition phase Z is started via the connecting terminals 22, 23 to the control inputs 20, 21 of the switch 14 designed as an optotriac, which irradiates the control base of the triac 30 according to the optocoupler principle by irradiation of the light pulse emitted from the photodiode 29, so that the switch path between the connections 18, 19 of the switch 14 is switched through and the capacitor 17 charged by ignition voltage generator 12 discharges the connecting path 18, 19 of the switch via electrodes 2 and 3 to ground 4 via series resistor 13.
  • the ignition phase Z shown in diagram B is shown schematically as a rectangular pulse, the actual curve shape of this pulse resulting from the time constant of capacitor 17 and series resistor 13.
  • the time of the actual overlap phase of the ignition phase Z and the heating phase H can be seen from the diagram C, the overlap pulse U beginning at the time t 2 , its pulse duration extending over the time in which the heating phase H and the ignition phase Z each with the overlay symbolic value 1; if one of the two pulses referred to as the heating phase and ignition phase drops, the overlap pulse according to diagram C is again set to 0, which means that the actual ignition process is completed here in the example at time t 3 , the end of the heating phase H, even if the ignition phase Z still continues extends at a later time t 4 .
  • time sequence of the functional sequence of heating phase H and ignition phase Z is preprogrammed by means of a digital computer and storage system and can be called up in an optimized sequence; the values for the times t 1 , t 2 t 3 and t 4 are predetermined in a read-only memory and are called up in succession by the operation of a microprocessor for control purposes via the inputs 27, 26, 22 and 23.

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
  • Control Of Resistance Heating (AREA)

Claims (9)

  1. Circuit d'alimentation en courant pour une lampe à décharge comportant des électrodes (2, 3), dont l'une peut être raccordée en tant qu'électrode à incandescence à un dispositif commandable pour la production d'un courant de chauffage, qui est relié par l'intermédiaire d'une sortie (5) à l'électrode (3), agencée en tant qu'électrode d'incandescence, de la lampe à décharge (1), et comportant une unité de limitation du courant et un dispositif d'amorçage, et dans lequel les électrodes (2, 3) de la section de décharge de la lampe (1) sont reliées à une source de courant continu (10) et le dispositif d'amorçage est constitué par le circuit série formé d'un générateur de tension d'amorçage (12), d'une résistance additionnelle (13) et de la section de commutation d'un commutateur (14), un condensateur (17) étant branché en parallèle avec la sortie (16) du générateur de tension d'amorçage, qui est reliée à la résistance additionnelle (13), caractérisé en ce que le dispositif d'amorçage est branché en parallèle avec la section de décharge de la lampe, qui est formée par des électrodes de la lampe, ce dispositif comportant en tant que commutateur (14) un commutateur électronique commandable du type à semiconducteurs, et le commutateur électronique (14) est relié par une entrée de commande (20, 21) à un générateur d'impulsions d'amorçage.
  2. Circuit d'alimentation en courant selon la revendication 1, caractérisé en ce que le commutateur commandable (14) est agencé sous la forme d'un optocoupleur.
  3. Circuit d'alimentation en courant selon la revendication 2, caractérisé en ce que le commutateur commandable (14) est agencé sous la forme d'un optotriac.
  4. Circuit d'alimentation en courant selon l'une des revendications 1 à 3, caractérisé en ce que la source de courant continu (10) est agencée sous la forme d'une source de courant constant.
  5. Utilisation du circuit d'alimentation en courant selon l'une des revendications 1 à 4, pour une lampe à deutérium ou à hydrogène.
  6. Procédé pour faire fonctionner une lampe à décharge (1) comportant des électrodes (2, 3) branchées en tant qu'anode et cathode, dans laquelle les électrodes (2, 3) sont reliées, en tant que section de décharge de la lampe (1), à une source de tension continue (10) et le dispositif d'amorçage est constitué par un circuit série formé d'un générateur de tension d'amorçage (12), d'une résistance additionnelle (13) et de la section de commutation d'un commutateur (14), et dans laquelle un condensateur (17) est branché en parallèle avec la sortie (16), reliée à la résistance additionnelle (13), du générateur de tension d'amorçage (12), et la section de décharge est chargée par une phase d'amorçage après le début d'une phase de chauffage de la cathode (3), à partir du condensateur (17) au moyen du commutateur (14), sous l'effet de la fermeture de ce dernier, et dans laquelle il se produit un chevauchement dans le temps entre la phase de chauffage et la phase d'amorçage, caractérisé en ce que le commutateur (14) agencé sous la forme d'un commutateur électronique commandable est commandé par un générateur d'impulsions d'amorçage au moyen d'un signal de commande de telle sorte que la phase de chevauchement dans le temps de la phase de chauffage et de la phase d'amorçage est au moins de l'ordre de 5 à 50 % de la durée de la phase d'amorçage.
  7. Procédé selon la revendication 6, caractérisé en ce que le signal de commande est transmis optiquement à l'intérieur du commutateur commandable (14) à l'aide d'une photodiode (29), selon le principe de l'optocoupleur.
  8. Procédé selon la revendication 6 ou 7, caractérisé en ce que le chevauchement dans le temps se situe dans la gamme de 500 µs à 100 ms.
  9. Procédé selon l'une des revendications 6 à 8, caractérisé en ce que l'amplitude de la tension d'amorçage se situe dans la gamme de 200 à 1000 V.
EP94118802A 1994-03-08 1994-11-30 Circuit d'alimentation d'une lampe à décharge; son utilisation ainsi qu'un procédé associé Expired - Lifetime EP0671866B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4407674 1994-03-08
DE4407674A DE4407674A1 (de) 1994-03-08 1994-03-08 Stromversorgungsschaltung für eine Entladungslampe, deren Verwendung und Verfahren zum Betrieb

Publications (3)

Publication Number Publication Date
EP0671866A2 EP0671866A2 (fr) 1995-09-13
EP0671866A3 EP0671866A3 (fr) 1996-12-04
EP0671866B1 true EP0671866B1 (fr) 2001-04-18

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ID=6512151

Family Applications (1)

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EP94118802A Expired - Lifetime EP0671866B1 (fr) 1994-03-08 1994-11-30 Circuit d'alimentation d'une lampe à décharge; son utilisation ainsi qu'un procédé associé

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US (1) US5530319A (fr)
EP (1) EP0671866B1 (fr)
DE (2) DE4407674A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6495825B1 (en) 1999-12-22 2002-12-17 International Business Machines Corporation Apparatus for photo exposure of materials with subsequent capturing of volatiles for analysis
US7034469B2 (en) * 2005-02-04 2006-04-25 Osram Sylvania Inc. Phase-control power controller with analog RMS load voltage regulation
US7030567B2 (en) * 2005-02-04 2006-04-18 Osram Sylvania Inc. Phase-control power controller with digital RMS load voltage regulation
JP4909199B2 (ja) * 2007-07-13 2012-04-04 浜松ホトニクス株式会社 放電ランプ用制御装置及び光源装置
UY31825A (es) * 2008-05-13 2010-01-05 Res And Innovation Inc Método de iniciación para descarga de plasma luminiscente anormal en un medio de fase líquida y dispositivo para su implementación

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Publication number Priority date Publication date Assignee Title
DE1489350C3 (de) * 1962-07-13 1974-09-05 Dr. Kern Gmbh, 3400 Goettingen Gasentladungslampe mit einer Gasfüllung aus Deuterium- oder Wasserstoffgas
US3904925A (en) * 1973-10-01 1975-09-09 Gen Electric Power supply for a thermionic emission gas discharge lamp
US4101809A (en) * 1977-05-26 1978-07-18 General Electric Company Discharge lamp operating circuit
US4221994A (en) * 1978-11-09 1980-09-09 Demetron Research Corporation Photo curing light source
US4438370A (en) * 1981-03-03 1984-03-20 Isco, Inc. Lamp circuit
US4417180A (en) * 1981-03-05 1983-11-22 The Perkin-Elmer Corporation Lamp firing apparatus
DE3108547A1 (de) * 1981-03-06 1982-10-07 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München "zuendschaltung fuer eine hochdruckmetalldampfentladungslampe"
US4742276A (en) * 1986-07-25 1988-05-03 The Perkin-Elmer Corporation Regulated deuterium arc supply system
JP2862887B2 (ja) * 1989-02-21 1999-03-03 浜松ホトニクス株式会社 ガス放電管の駆動回路
US5028844A (en) * 1989-02-23 1991-07-02 Matsushita Electric Works, Ltd. DC discharge lamp lighting device
US5128593A (en) * 1990-01-25 1992-07-07 Beckman Instruments, Inc. Power supply for gas-filled lamps
US5053683A (en) * 1990-12-06 1991-10-01 Lendar Design Inc. Starting and operating device for controlling a starter that ignites a sodium lamp
US5150009A (en) * 1991-08-30 1992-09-22 Gte Products Corporation Glow discharge lamp
DE4140557A1 (de) * 1991-12-09 1993-06-17 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Schaltungsanordnung zum betrieb einer oder mehrerer niederdruckentladungslampen

Also Published As

Publication number Publication date
DE59409733D1 (de) 2001-05-23
DE4407674A1 (de) 1995-09-14
US5530319A (en) 1996-06-25
EP0671866A2 (fr) 1995-09-13
EP0671866A3 (fr) 1996-12-04

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