WO2007028777A1 - Circuiterie et procede pour faire fonctionner une lampe a decharge - Google Patents

Circuiterie et procede pour faire fonctionner une lampe a decharge Download PDF

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Publication number
WO2007028777A1
WO2007028777A1 PCT/EP2006/065950 EP2006065950W WO2007028777A1 WO 2007028777 A1 WO2007028777 A1 WO 2007028777A1 EP 2006065950 W EP2006065950 W EP 2006065950W WO 2007028777 A1 WO2007028777 A1 WO 2007028777A1
Authority
WO
WIPO (PCT)
Prior art keywords
lamp
supply voltage
time
resistance
preheating
Prior art date
Application number
PCT/EP2006/065950
Other languages
German (de)
English (en)
Inventor
Harald Schmitt
Arwed Storm
Original Assignee
Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH
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 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH filed Critical Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH
Publication of WO2007028777A1 publication Critical patent/WO2007028777A1/fr

Links

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
    • H05B41/26—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
    • H05B41/295—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 and specially adapted for lamps with preheating electrodes, e.g. for fluorescent 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
    • H05B41/295—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 and specially adapted for lamps with preheating electrodes, e.g. for fluorescent lamps
    • H05B41/298—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2981—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
    • H05B41/2983—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal power supply conditions

Definitions

  • the invention relates to a circuit arrangement for operating a discharge lamp according to the preamble of claim 1 and to a method for operating a discharge lamp according to the preamble of patent claim 7.
  • the problem is that the supply voltage derived from the mains voltage is temporally variable.
  • network interruptions can occur.
  • Ballasts normally restart with full preheat time.
  • a main branch in which a resistor is arranged which defines a standard preheating time, and a secondary branch parallel to the main branch in which a switch is arranged which depends on the time History of the presence of the supply voltage is controlled.
  • the main branch with the resistor which defines the standard preheating time is applied to the connection, and the secondary branch is opened by the switch.
  • the switch is preferably closed and the secondary branch is in addition to the main branch at the terminal.
  • the sidelobe reduces the total resistance, and the preheat time is shortened from the standard preheat duration.
  • the sidelobe closes the main branch when closing the switch. Then, the preheating time is defined as zero seconds, and the circuit begins immediately when the switch is closed with the ignition of the lamp.
  • the switch is a transistor. This allows a particularly compact design.
  • the transistor can be controlled by means of a capacitor which is charged when the supply voltage is present and discharges in the absence of the supply voltage. This capacitor then acts as a timer, which determines depending on the state of its discharge, whether the switch remains open or closed.
  • a threshold value is preferably a diode, particularly preferably a Zener diode.
  • the Zener diode is provided between capacitor and transistor and is transparent above its threshold voltage value.
  • the transistor is switched on and then the secondary branch is connected in parallel with the main branch. The total resistance applied to the terminal is reduced, and the preheating time is shortened from the standard preheating time.
  • the resistance is variably set as a function of the time profile of the presence of a supply voltage for the lamp.
  • a threshold value for the duration of the interruption of the supply voltage is preferably defined.
  • a resistor which defines a standard preheat duration is applied to the terminal in accordance with the above main branch.
  • a lower resistance is applied, which corresponds for example to the above main branch with the side branch connected in parallel, the lower resistance defining a preheat duration that is shorter than the standard preheat duration.
  • this lower resistance may be a short circuit, so that the preheat duration is defined to be zero seconds, so that the ignition of the lamp is started immediately.
  • FIG. 1 shows the circuit diagram of a pre-circuit in the circuit arrangement according to the invention, which provides the variable resistor.
  • the circuit shown in Figure 1 is a circuit as used in an electronic ballast according to the invention, i. in a circuit arrangement according to the invention. While the lamp itself is not shown and also not the filaments for preheating the lamp and the corresponding control of the filaments, it is to be assumed in the present case of the prior art, in which a user-specific integrated circuit
  • the heating-time-pin circuit comprises a main branch, in which the resistor R4 is located, as well as a side branch, in which a transistor T1 and, optionally, additionally a resistor R3 is located as a switch.
  • the components provided with brackets are optional, the resistor R3 being replaced by a simple conduit if it is not used and the other bracketed components can be removed without replacement.
  • the connection of the switch Tl and corresponding short-circuiting of the resistor R4 or the parallel connection of the resistor R3 (depending on whether R3 is used or not) should be dependent on the time course of the presence of the supply voltage.
  • the supply voltage VCC is initially provided via a resistor Rl sloping to a capacitor Cl.
  • a further resistor R2 may be provided so that a voltage divider results.
  • the supply voltage VCC is a direct voltage, which results from the mains voltage.
  • the mains voltage is basically the provision of the supply voltage, possibly accompanied by a filter-related time delay.
  • the supply voltage thus charges the capacitor Cl.
  • Inter condenser Cl and transistor Tl is a Zener diode Dl is provided, which is connected to the control terminal of the transistor Tl.
  • a resistor R5 and a capacitor C2 can be provided in parallel behind the diode D1, connecting the control terminal and the drain of the transistor T1.
  • the resistor R4 is measured at the preheat time pin. This defines a standard preheat time, and the electronic ballast heats the lamp for the duration of this default heating time before it triggers the ignition of the lamp.
  • the capacitor C1 is charged to a saturation value. In this state, it exceeds the threshold voltage of the Zener diode Dl. Thus, it turns on the transistor Tl, and through the passage from source to drain, the switch is closed and the side branch is connected in parallel with the resistor R4. If there is a momentary interruption of the supply voltage and the reconnection, the voltage at the capacitor C1 remains sufficiently high to keep the transistor T1 on.
  • the preheating time is then defined shorter than the default preheating time defined by resistor R4 alone.
  • a pre-heating time of zero seconds is defined, and the electronic ballast immediately switches over again to the ignition of the lamp.
  • the capacitor discharges and no longer exceeds the threshold voltage of the Zener diode.
  • the transistor T1 has in the meantime switched off again, because the voltage which defines a switch-on is no longer sufficiently high and the threshold voltage of the zener diode is no longer exceeded. Accordingly, after a prolonged interruption of the supply voltage at the preheating time pin, the main branch alone is measured again and the lamp is preheated for the standard preheating time and then ignited.
  • the secondary branch is then switched on when the voltage applied to the capacitor is sufficiently high. This is exactly the case if the voltage is still present or only briefly interrupted. Only after return of the supply voltage after a short-term interruption so a shorter preheating time is defined.
  • the circuit is applied optimally to the case that switching operations are carried out in emergency power systems in which there is a grid break, but that this grid break is not so long that the lamps are not ignited immediately without preheating time or with only a shorter preheating period could become. Accordingly, with only a brief interruption of the supply voltage, the lamp can be reactivated quickly, which takes into account the legal requirements. Even if this is a simple switching off or switching on the supply voltage is mentioned, what is said applies even with fluctuations in the supply voltage.
  • the term "presence of the supply voltage” means that the supply voltage is above the threshold voltage of the Zener diode If the supply voltage fluctuates below this threshold value, the capacitor discharges again, and the transistor T1 does not become This corresponds qualitatively to the situation in the case of a slightly different course of time, as in the case of a complete discontinuation of the supply voltage.
  • Tl is then preferably of the type BC550C, and the diode D1 has a threshold voltage of 11 volts.
  • Tl is of type BC874C and the diode has a threshold voltage of 9.1 volts.
  • the invention is not limited to the embodiment listed here.
  • a different type of switch can be provided, and it can also be a different timing element instead of a capacitor be provided, which detects the timing of the presence of the supply voltage in any way and controls the switch accordingly.

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

Dans les circuiteries connues servant à faire fonctionner une lampe à décharge, la lampe est préchauffée avant d'être allumée. A cet effet, la durée de préchauffage est définie au moyen d'une résistance qui est présente au niveau de la connexion d'un circuit intégré et qui y est mesurée. L'invention vise à éviter que le préchauffage ne soit réexécuté dans toute sa durée en cas d'interruption brève de la tension d'alimentation. A cet effet, la circuiterie selon l'invention comprend une branche principale dans laquelle est placée une résistance (R4) qui définit une durée de préchauffage standard. Elle comprend également une branche auxiliaire, parallèle à la branche principale, dans laquelle est placé un commutateur (D1) qui est commandé en fonction de la variation temporelle de la présence de la tension d'alimentation. Grâce à la branche auxiliaire parallèle, la valeur de résistance appliquée à la connexion devient inférieure à celle de la résistance (R4) dans la branche principale lors de la fermeture du commutateur et la durée de préchauffage est définie à une durée de préchauffage qui est inférieure à la durée de préchauffage standard. Cela permet un rallumage rapide des lampes après le retour de la tension d'alimentation en cas de brève interruption.
PCT/EP2006/065950 2005-09-07 2006-09-04 Circuiterie et procede pour faire fonctionner une lampe a decharge WO2007028777A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005042527.5A DE102005042527B4 (de) 2005-09-07 2005-09-07 Schaltungsanordnung und Verfahren zum Betreiben einer Entladungslampe
DE102005042527.5 2005-09-07

Publications (1)

Publication Number Publication Date
WO2007028777A1 true WO2007028777A1 (fr) 2007-03-15

Family

ID=37186429

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/065950 WO2007028777A1 (fr) 2005-09-07 2006-09-04 Circuiterie et procede pour faire fonctionner une lampe a decharge

Country Status (2)

Country Link
DE (1) DE102005042527B4 (fr)
WO (1) WO2007028777A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7834552B2 (en) 2007-07-17 2010-11-16 Infineon Technologies Austria Ag Controlling a lamp ballast

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995010168A1 (fr) * 1993-10-01 1995-04-13 C.M. Personnel Participation B.V. Ballast electronique pour lampe a gaz a decharge
WO1997043878A1 (fr) * 1996-05-10 1997-11-20 Philips Electronics N.V. Ballast electronique
WO1999034648A1 (de) * 1997-12-23 1999-07-08 Tridonic Bauelemente Gmbh Elektronisches vorschaltgerät
EP1280388A1 (fr) * 2001-07-16 2003-01-29 TridonicAtco GmbH & Co. KG Ballast électronique avec un mode de préchauffage
EP1289350A1 (fr) * 2001-08-27 2003-03-05 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Circuit de commande pour lampe à décharge avec électrodes préchauffées

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995010168A1 (fr) * 1993-10-01 1995-04-13 C.M. Personnel Participation B.V. Ballast electronique pour lampe a gaz a decharge
WO1997043878A1 (fr) * 1996-05-10 1997-11-20 Philips Electronics N.V. Ballast electronique
WO1999034648A1 (de) * 1997-12-23 1999-07-08 Tridonic Bauelemente Gmbh Elektronisches vorschaltgerät
EP1280388A1 (fr) * 2001-07-16 2003-01-29 TridonicAtco GmbH & Co. KG Ballast électronique avec un mode de préchauffage
EP1289350A1 (fr) * 2001-08-27 2003-03-05 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Circuit de commande pour lampe à décharge avec électrodes préchauffées

Also Published As

Publication number Publication date
DE102005042527B4 (de) 2015-10-29
DE102005042527A1 (de) 2007-03-08

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