EP1181844B1 - Procede et ballaste servant a alimenter un emetteur de rayonnement u.v. basse pression - Google Patents

Procede et ballaste servant a alimenter un emetteur de rayonnement u.v. basse pression Download PDF

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Publication number
EP1181844B1
EP1181844B1 EP01911440A EP01911440A EP1181844B1 EP 1181844 B1 EP1181844 B1 EP 1181844B1 EP 01911440 A EP01911440 A EP 01911440A EP 01911440 A EP01911440 A EP 01911440A EP 1181844 B1 EP1181844 B1 EP 1181844B1
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EP
European Patent Office
Prior art keywords
light low
voltage
polarity
radiator
pressure
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
EP01911440A
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German (de)
English (en)
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EP1181844A1 (fr
Inventor
Dirk Riepe
Jan Boris Rudkowski
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.)
Wedeco AG
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Wedeco AG
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Publication of EP1181844A1 publication Critical patent/EP1181844A1/fr
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Publication of EP1181844B1 publication Critical patent/EP1181844B1/fr
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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
    • H05B41/24—Circuit arrangements in which the lamp is fed by high frequency ac, or with separate oscillator frequency
    • H05B41/245—Circuit arrangements in which the lamp is fed by high frequency ac, or with separate oscillator frequency for a plurality of lamps
    • 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
    • H05B41/285—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2858—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the lamp against abnormal operating conditions

Definitions

  • the invention relates to a method for feeding a UV light low-pressure lamp according to the preamble of the claim 1 and a ballast for feeding a UV light low-pressure lamp according to the preamble of claim 7.
  • UV light disinfection using UV light is becoming increasingly powerful UV light low pressure lamp used.
  • the Efficiency and controllability are very demanding high.
  • the invention has for its object in the operation of UV light low pressure lamps to simplify the supply, increase the UV light yield and increase the efficiency, without limiting the lifespan.
  • a partial solution of the method according to the invention consists in known way in it, the UV light low pressure lamp to operate with direct voltage or direct current.
  • all disadvantages, like those with a feed, are eliminated AC voltage or AC are connected, that is permanent re-ignition of the gas discharge column when feeding with mains frequency in the rhythm of the mains frequency with the consequence of a increased electrode wear or with high frequency Power supply with a frequency of> 20 KHz interference radiation and short line length of the feed line or line losses.
  • a mismatch between the applied voltage and the optimal UV light output avoided, as in AC or AC operation arises because there due to the changing time Voltage corresponding to an optimal UV light yield Working point is only briefly run through.
  • Switching the polarity is not a conventional one AC operation, because the switching frequency per Time unit is smaller than with AC operation the lowest operating frequency usual so far, namely the Mains AC voltage from 50 to 60 Hz. Switching the polarity also does not correspond to the zero crossing of the harmonic, in particular sinusoidal oscillation of the AC mains voltage, but that in the transition period of switching polarity change of a voltage taking place, at least has the value of the operating voltage. Otherwise it would the UV light low pressure lamp clearly before the polarity change go out because it would take a while before the voltage applied after falling below the Burning voltage has finally reached zero.
  • the time intervals between the change of polarity can longer than 0.2 sec but shorter than 5 sec.
  • the time intervals are also shorter than that Cooling time of the cooling electrode under operating temperature.
  • the thermal value specified for this as the design variable Time constant of the UV light low-pressure lamp sets together from a combination of the thermal time constants the electrodes, the gaseous filler and the lamp housing and can vary from spotlight to spotlight, so that an exact specification of a limit value is not possible. Also can at the cost of the life of the UV light low pressure lamp a falling below the operating temperature in purchase be taken. It is then an initially increased compensation Apply voltage, but below the ignition voltage can lie. However, the further the operating voltage fell below the more the current load increases Electrode on, since with each polarity reversal matter from the surface layer torn out the relevant electrode and thereby the life of the electrode is shortened.
  • the lamp voltage or lamp current can also be adjusted a change in polarity and are monitored in the event of a deviation the electrical power from a setpoint the polarity be changed again.
  • the threshold is preferably 3% below the power value Start of a polarity change.
  • the monitoring intervals for the power measurement are expediently shorter than the thermal time constant of the UV light low-pressure lamp sized.
  • the transition period in which the polarity changes can be shorter than the recombination time of the gas discharge column of the UV light low pressure lamp be measured.
  • the switch forms a ring-shaped arrangement of four semiconductor switches on two opposite nodes with DC voltage or Direct current are fed.
  • a bridge branch encompasses the UV light low-pressure lamp.
  • Two diagonally opposite each other Semiconductor switches are alternating with two others Diagonally opposite semiconductor switches open and closed.
  • At least one of the closable semiconductor switch as controllable current source be trained.
  • This configuration has the advantage of being a source of food used a DC voltage source for the entire arrangement that can only be regulated by voltage.
  • the lamp's operating voltage can be set.
  • the igniter comprises a series connection an inductance and a capacitance that lie between the Electrodes of the UV light low-pressure lamp is arranged. Before the ignition, this series connection is connected to an AC voltage or alternating current source can be switched on and Ignition from AC voltage or AC power source separable.
  • the Supply voltage source must apply the ignition voltage. she can rather be in the range of the usual operating voltage.
  • the ignition voltage is generated by that in the inductance the series circuit current flowing when the Semiconductor switch initially no longer in a closed Circuit can flow and therefore builds up a high voltage, which ultimately because of the parallel connection to the discharge gap of the UV light low-pressure lamp leads to ignition. After the ignition is switched to stationary operation, where the diagonally opposite semiconductor switches the ring circuit is alternately closed or be opened and thereby the connection between the UV light low pressure lamp and the voltage or current source produce.
  • the series connection of an inductance and a capacitance can also be used in series to heat the electrodes of the UV light low-pressure lamps be arranged, then the front the alternating current applied to the ignition simultaneously with the preheating the heating coils serves.
  • Such heating coils are particularly useful in the case of amalgam-doped UV light low-pressure lamps required to have one at all Ignition can take place.
  • the further education enables the Circuit with current limitation through the inductance and Capacity in AC operation for both heating of the coils as well as the inductance for one Ignition of the UV light low-pressure lamp to use.
  • An alternative embodiment of the igniter can have a capacitance include that between the electrodes of the UV light low-pressure lamp is arranged. On this is before Ignition increases to the value of the ignition voltage DC voltage can be applied. After the ignition and decay of the Voltage to burning voltage becomes a smoothing capacity switched on a semiconductor switch.
  • the smoothing capacity then serves when the DC voltage by rectifying the low-frequency AC voltage of the supply network is a pulsating component to dampen the DC voltage.
  • the smoothing capacity which because of their dimensioning for the low frequency of the capacitance value is larger than the ignition capacity, because of the Switch-off option chosen lower in its dielectric strength are called the ignition capacity, which is always parallel to the UV light low pressure lamp is and for the ignition voltage must be measured.
  • the ignitor can also be connected in series of capacities, which in turn each parallel to the UV light low-pressure lamps are arranged. It can a design of the capacitive voltage divider with the same or different capacities.
  • UV light low-pressure lamp Once a UV light low-pressure lamp is ignited, its voltage drops to the lower burning voltage, so that the applied voltage will focus more on the remaining UV light low pressure lamp not yet ignited distributed. These UV light low-pressure lamps then ignite almost simultaneously, because with every further ignited UV light low-pressure lamp the tension on the remaining UV light low pressure lamps and thus enforces the Fast ignition even of UV light low-pressure lamps that do not ignite, who need a higher ignition voltage than ignitable UV light low pressure lamps.
  • an unequal division ratio can limit the maximum ignition voltage to one value be only moderately larger than the necessary ignition voltage of a single UV light low-pressure lamp.
  • the ignition voltage across the series circuit is due to the unequal division ratio, initially with one dominant share only for a first UV light low pressure lamp effective that ignites.
  • the supply voltage of the ballast can be variable and at a series connection of several UV light low pressure lamps to the sum of the individual voltages of the UV light low-pressure lamps be customizable.
  • This solution can be used without changing the ballast not just a UV light low-pressure lamp, but series connections from a different number of UV light low-pressure lamps operate on the same ballast.
  • the economy of the ballast can be namely increase significantly if several UV light low-pressure lamps be operated on the same ballast.
  • ballast shown in the drawings in modifications serves a UV light low-pressure lamp 10 to supply with electrical energy from a voltage source 16.
  • the voltage source 16 in FIGS. 1 and 2 is concerned is a DC voltage source, the DC voltage to the Electrodes 12 and 14 of the UV light low-pressure lamp 10 applies.
  • semiconductor switches 18, 20, 22 and 24 are provided to reverse polarity from time to time.
  • the Semiconductor switches 18, 20, 22 and 24 form a ring, at its one node between the semiconductor switches 18 and 20 or 22 and 24 the DC voltage source 16 connected and at its other node between the semiconductor switches 18 and 22 or 20 and 24, i.e. diagonally to Ring, the UV light low pressure lamp 10 with its electrodes 12 and 14 is connected.
  • the semiconductor switches are controlled so that always one pair of semiconductor switches 18 and 24 is closed, while the other pair of semiconductor switches 20 and 22 open is and vice versa.
  • the time intervals in which the one Pair of semiconductor switches open and the other pair of semiconductor switches is closed is after the thermal inertia of the UV light low-pressure lamp 10 dimensioned between 0.2 and 5 seconds. In practice is this time interval is about 0.5 seconds. During this interval is a constant DC voltage or a constant one Direct current at the electrodes 12 and 14, their polarity is changed regularly at intervals of time. 1 illustrates the stationary operating case, which already has a gas discharge column in the UV light low-pressure lamp is available.
  • Fig. 2 shows an illustration similar to Fig. 1, but in the instead of the semiconductor switches 22 and 24 adjustable or controllable Current sources 26 and 28 are used. Take this over both the function of the semiconductor switches 22 and 24 from FIG. 1, as well as a current limit. This eliminates a tight tolerated design of the DC voltage source 16. Rather can the DC voltage source 16 for the maximum burning voltage be designed because when the operating parameters change, in the event of aging or other tolerances of the UV light low pressure lamp 10 the current then through the Current sources 26 and 28 is limited to the permissible value.
  • High-performance UV light low-pressure lamps are also required also preheat the electrodes so that the ignition facilitated or made possible at all.
  • the representation 3 here shows a solution in which both Heating of the electrodes, as well as ignition is possible.
  • the Electrodes formed as heating coils 30 and 32.
  • a heating circuit leads from the nodes between the semiconductor switch 18 and the adjustable current source 26 and the Semiconductor switch 20 and the controllable current source 28 via the series connection of an inductance 34 and a capacitance 36.
  • the UV light low-pressure lamp is used for preheating 10 initially operated with AC voltage. This can be done happen that the voltage source 16 itself AC voltage generated, or by the fact that the voltage source 16 is operated as a DC voltage source and the AC voltage by alternately switching the switches 18 and 20 as well as up and down regulation of the current sources 26 and 28 he follows. It becomes a sinusoidal low to medium frequency AC voltage required.
  • This alternating voltage lets a current through the heating coils 30 and 32 flow through that for alternating voltage as a series resistor serving series connection from inductor 34 and the capacity 36 is limited. Because in this preheating mode the inductance 34 and the capacitance 36 alternately The series connection can also store energy for ignition be used.
  • Fig. 4 shows a further alternative for an igniter, the two arranged parallel to the UV light low-pressure lamp 10
  • Capacities 38 and 40 includes.
  • the capacitance forms 38 a main smoothing capacity and the capacitance 40 an ignition capacity.
  • the main smoothing capacitance 38 is over one Semiconductor switch 42 can be switched on and off in parallel. The Ignition takes place in such a way that the DC voltage source 16 first the voltage across the ignition capacitance 40 at the ignition voltage level can rise. After ignition is done the main smoothing capacitance 38 via the semiconductor switch 42 connected in parallel.
  • the main smoothing capacity 38 must be in their dielectric strength only on the operating voltage of the UV light low pressure lamp 10 can be designed.
  • the igniter comprises a series connection of Capacities 44, 44 'and 44' ', which in turn are each parallel to the UV light low pressure lamps 10, 10 'and 10' ' are. This forms a voltage divider that the ignition voltage in the divider ratio of the voltage divider the associated UV light low pressure lamps 10, 10 'and 10' ' invests.
  • voltage sources 46, 46 ', 46' 'and 46' '' provided the electrode coils individually or in pairs 30, 30 ', 30' 'and 32, 32' and 32 '' can heat. There one Heating during the burning phase is no longer necessary the voltage sources 46, 46 ', 46' 'and 46' '' by switches 48, 48 ', 48' 'and 48' '' after ignition of the relevant UV light low-pressure lamp 10, 10 'and 10' 'can be switched off.

Claims (19)

  1. Procédé d'alimentation d'un projecteur de lumière ultraviolette à basse pression (10) en tension ou en courant à polarité changeante, caractérisé en ce que, après l'allumage du projecteur de lumière ultraviolette à basse pression (10), les intervalles de temps, à la fin desquels la polarité est changée, sont dimensionnés supérieurs à la demi-durée de période de la fréquence habituelle du secteur, mais inférieurs au temps résultant de la constante de temps thermique du projecteur de lumière ultraviolette à basse pression (10) jusqu'à l'obtention d'une valeur limite inférieure pour la température de service des électrodes (12, 14).
  2. Procédé suivant la revendication 1, caractérisé en ce que les intervalles de temps sont dimensionnés supérieurs à 0,2 secondes, mais inférieurs à 5 secondes.
  3. Procédé suivant les revendications 1 ou 2 caractérisé en ce que la tension du projecteur ou le courant du projecteur sont surveillés après un changement de la polarité et que la polarité est à nouveau changée si la puissance électrique s'écarte d'une valeur de consigne.
  4. Procédé suivant la revendication 3, caractérisé en ce que, au début d'un changement de la polarité, la valeur seuil est inférieure, de préférence de 3 %, à la valeur de la puissance.
  5. Procédé suivant la revendication 3 ou 4, caractérisé en ce que les intervalles de surveillance pour la mesure de la puissance sont dimensionnés plus courts que la constante de temps thermique du projecteur de lumière ultraviolette à basse pression (10).
  6. Procédé suivant l'une des revendications 1 à 5, caractérisé en ce que le temps de transition, pendant lequel la polarité change, est inférieur au temps de recombinaison de la colonne à décharge gazeuse du projecteur de lumière ultraviolette à basse pression (10).
  7. Résistance additionnelle destinée à l'alimentation d'un projecteur de lumière ultraviolette à basse pression (10) comportant un dispositif d'allumage et un dispositif d'alimentation en service stationnaire, qui comprend une source de courant continu ou une source de tension continue (16), dont la polarité peut être commutée au moyen d'un arrangement de commutateurs (18, 20, 22, 24) pouvant être actionné par une commande, caractérisée en ce que la commande est dimensionnée de façon qu'après allumage du projecteur de lumière ultraviolette à basse pression (10), les intervalles de temps, à la fin desquels la polarité est changée, sont supérieurs à la demi-durée de période de la fréquence habituelle du secteur, mais inférieurs au temps qui s'écoule jusqu'à ce qu'une valeur limite inférieure soit atteinte pour la température de service des électrodes (12, 14), temps qui résulte de la constante de temps thermique du projecteur de lumière ultraviolette à basse pression (10).
  8. Résistance additionnelle suivant la revendication 7, caractérisés en ce que la commande est dimensionnée de façon que les intervalles de temps, à la fin desquels la polarité est changée, sont supérieurs à 0,2 secondes, mais inférieurs à 5 secondes.
  9. Résistance additionnelle suivant les revendications 7 ou 8, caractérisée en ce qu' un dispositif est prévu pour surveiller la tension du projecteur ou du courant du projecteur après un changement de la polarité et qu'un signal indiquant que la polarité est à nouveau à changer est transmis à la commande si la puissance électrique s'écarte d'une valeur de consigne.
  10. Résistance additionnelle suivant les revendications 9 ou 10, caractérisée en ce que la valeur seuil est inférieure, de préférence de 3 %, à la valeur de la puissance au début d'un changement de la polarité.
  11. Résistance additionnelle suivant les revendications 9 ou 10, caractérisée en ce que les intervalles de surveillance pour la mesure de la puissance sont inférieurs à la constante de temps thermique du projecteur de lumière ultraviolette à basse pression (10).
  12. Résistance additionnelle suivant l'une des revendications 7 à 11, caractérisés en ce que la durée de parcours de la commande pendant laquelle la polarité change est dimensionnée inférieure au temps de recombinaison de la colonne à décharge gazeuse du projecteur de lumière ultraviolette à basse pression (10).
  13. Résistance additionnelle suivant l'une des revendications 7 à 12, caractérisée en ce que l'arrangement de commutateurs est un arrangement annulaire de quatre commutateurs statiques (18, 20, 22, 24) qui est relié, à deux sommets opposés, à une source de courant continu ou de tension continue (16), qui comprend une branche avec un projecteur de lumière ultraviolette à basse pression (10), et dont respectivement deux commutateurs statiques (18, 24, 20, 22) diagonalement opposés peuvent être ouverts ou fermés en alternance avec les deux autres commutateurs statiques (20, 22, 18, 24).
  14. Résistance additionnelle suivant l'une des revendications 7 à 13, caractérisée en ce qu' un commutateur statique au moins, pouvant être simultanément fermé, est conçu comme source de courant réglable (26, 28).
  15. Résistance additionnelle suivant l'une des revendications 7 à 14, caractérisée en ce que l'allumeur comprend un montage en série, qui se compose d'une inductance (34) et d'une capacité (36), qui est disposé entre les électrodes (30, 32) du projecteur de lumière ultraviolette à basse pression (10), qui peut être connecté, préalablement à l'allumage, à une source de courant alternatif ou de tension alternative (10) et qui peut être séparé de cette source de courant alternatif ou de tension alternative (10) pour les besoins de l'allumage.
  16. Résistance additionnelle suivant la revendication 15, caractérisée en ce que le montage en série composé d'une inductance (34) et d'une capacité (36) est disposé en série avec des filaments de chauffage (30, 32) des électrodes du projecteur de lumière ultraviolette à basse pression (10) et que le courant alternatif appliqué préalablement à l'allumage sert en même temps au préchauffage de filaments de chauffage (30, 32).
  17. Résistance additionnelle suivant l'une des revendications 7 à 14, caractérisés en ce que l'allumeur comprend une capacité (40), qui est disposée entre les électrodes (12, 14) du projecteur de lumière ultraviolette à basse pression (10), qu'une tension continue, qui augmente jusqu'à la valeur de la tension d'allumage, peut être appliquée préalablement à l'allumage et qu'après l'allumage, une capacité de lissage (38) peut être raccordée par l'intermédiaire d'un commutateur statique (42).
  18. Résistance additionnelle suivant l'une des revendications 7 à 17, caractérisée en ce que, en cas de montage en série de plusieurs projecteurs de lumière ultraviolette à basse pression (10, 10', ... 10"), l'allumeur comprend en plus un montage en série de capacités (44, 44',...44"), qui sont disposées, respectivement parallèlement aux projecteurs de lumière ultraviolette à basse pression (10, 10',... 10") et qui forment un diviseur de tension avec un rapport de division identique ou non identique pour la tension d'allumage.
  19. Résistance additionnelle suivant l'une des revendications 7 à 18, caractérisée en ce que la tension d'alimentation est variable et adaptable, dans le cas d'un montage en série de plusieurs projecteurs de lumière ultraviolette à basse pression (10, 10', ...10"), à la somme des tensions individuelles des projecteurs de lumière ultraviolette à basse pression (10, 10', ... 10").
EP01911440A 2000-04-06 2001-02-09 Procede et ballaste servant a alimenter un emetteur de rayonnement u.v. basse pression Expired - Lifetime EP1181844B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10016982A DE10016982A1 (de) 2000-04-06 2000-04-06 Verfahren zur Speisung eines UV-Licht-Niederdruckstrahlers und Vorschaltgerät zur Speisung eines UV-Licht-Niederdruck-Strahlers
DE10016982 2000-04-06
PCT/DE2001/000519 WO2001078465A1 (fr) 2000-04-06 2001-02-09 Procede et ballast servant a alimenter un emetteur de rayonnement u.v. basse pression

Publications (2)

Publication Number Publication Date
EP1181844A1 EP1181844A1 (fr) 2002-02-27
EP1181844B1 true EP1181844B1 (fr) 2002-10-23

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EP01911440A Expired - Lifetime EP1181844B1 (fr) 2000-04-06 2001-02-09 Procede et ballaste servant a alimenter un emetteur de rayonnement u.v. basse pression

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Country Link
US (1) US6593704B2 (fr)
EP (1) EP1181844B1 (fr)
JP (1) JP2003530677A (fr)
AT (1) ATE226782T1 (fr)
AU (1) AU780125B2 (fr)
CA (1) CA2372482C (fr)
DE (2) DE10016982A1 (fr)
DK (1) DK1181844T3 (fr)
ES (1) ES2185610T3 (fr)
HK (1) HK1042199B (fr)
NZ (1) NZ515963A (fr)
PT (1) PT1181844E (fr)
WO (1) WO2001078465A1 (fr)

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FR2864066B1 (fr) * 2003-12-23 2006-04-14 Otv Sa Dispositif d'alimentation de lampes uv utilisees dans le cadre du traitement de l'eau
JP2006351500A (ja) * 2005-06-20 2006-12-28 Nisshin Erekkusu:Kk 蛍光灯の直流電源による直流点灯装置
CN1977978B (zh) * 2005-12-01 2011-07-06 福建新大陆环保科技有限公司 一种开放式水渠辐射消毒系统
DE102006050276A1 (de) * 2006-10-23 2008-05-15 Wedeco Ag Verfahren zur Überwachung einer Mehrzahl von elektrischen Leuchtkörpern und Vorrichtung zur Desinfektion einer Substanz mittels ultravioletter Strahlung
JP2009262050A (ja) * 2008-04-24 2009-11-12 Panasonic Electric Works Co Ltd 紫外線照射装置
DE102008002727B4 (de) 2008-06-27 2020-12-17 Brita Gmbh Vorrichtung zur Behandlung von Wasser, insbesondere Filtervorrichtung, und Kartusche
DE102008040335B4 (de) 2008-07-10 2013-05-08 Brita Gmbh Vorrichtung zur Entkeimung von Wasser und Verwendung derselben
DE102009000092A1 (de) * 2008-07-22 2010-01-28 Brita Gmbh Flüssigkeitsentkeimungsvorrichtung und Verfahren zum Entkeimen von Flüssigkeiten
DE102008044292A1 (de) * 2008-12-02 2010-06-10 Brita Gmbh Verfahren zum Entkeimen von Flüssigkeiten und Flüssigkeitsentkeimungsvorrichtung
US8186080B2 (en) * 2009-10-28 2012-05-29 Vibram Sp.A. Bomb toe cap and method of forming the same
CN112708165A (zh) * 2020-12-17 2021-04-27 东莞市祐铭自动化科技有限公司 冷光源uv照射机

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US4408141A (en) * 1982-01-04 1983-10-04 Gte Laboratories Incorporated Dual cathode beam mode fluorescent lamp
JPH04109952A (ja) * 1990-08-31 1992-04-10 Toshiba Lighting & Technol Corp 紫外線照射装置
US5357173A (en) * 1992-11-05 1994-10-18 General Electric Company Ballast circuit arrangement for a high pressure sodium lamp
DE4401630A1 (de) 1994-01-20 1995-07-27 Bischl Johann Zünd- und Betriebsgerät für den Gleichstrombetrieb von Gasentladungslampen
CA2216908A1 (fr) * 1995-03-29 1996-10-03 Russell T. Stebbins Procede et dispositif pour eclairage par ionisation pulsee a courant continu
DE19526211A1 (de) 1995-07-18 1997-01-23 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Verfahren zum Betreiben von Entladungslampen bzw. -strahler
DE19627703A1 (de) * 1996-07-10 1998-01-15 Siegfried Bruenner Vorrichtung zum Betreiben von Gasentladungslampen unter Wechselstrom äquivalenten Bedingungen mit Gleichstrom
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Publication number Publication date
HK1042199A1 (en) 2002-08-02
ES2185610T3 (es) 2003-05-01
PT1181844E (pt) 2003-03-31
ATE226782T1 (de) 2002-11-15
AU780125B2 (en) 2005-03-03
CA2372482C (fr) 2004-07-27
US6593704B2 (en) 2003-07-15
HK1042199B (zh) 2003-03-28
US20030057868A1 (en) 2003-03-27
NZ515963A (en) 2002-12-20
DE50100045D1 (de) 2002-11-28
EP1181844A1 (fr) 2002-02-27
AU4046201A (en) 2001-10-23
JP2003530677A (ja) 2003-10-14
DK1181844T3 (da) 2003-02-24
DE10016982A1 (de) 2001-10-25
CA2372482A1 (fr) 2001-10-18
WO2001078465A1 (fr) 2001-10-18

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