EP0185179B1 - Circuit d'allumage pour une lampe à décharge à basse pression - Google Patents

Circuit d'allumage pour une lampe à décharge à basse pression Download PDF

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Publication number
EP0185179B1
EP0185179B1 EP85113901A EP85113901A EP0185179B1 EP 0185179 B1 EP0185179 B1 EP 0185179B1 EP 85113901 A EP85113901 A EP 85113901A EP 85113901 A EP85113901 A EP 85113901A EP 0185179 B1 EP0185179 B1 EP 0185179B1
Authority
EP
European Patent Office
Prior art keywords
lamp
capacitor
low
ignition
circuit
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
Application number
EP85113901A
Other languages
German (de)
English (en)
Other versions
EP0185179A1 (fr
Inventor
Hans-Jürgen Dipl.-Ing. Fähnrich
Eugen Dipl.-Ing. Statnic
Ulrich Dr. Dipl.-Phys. Roll
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.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen 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 fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Publication of EP0185179A1 publication Critical patent/EP0185179A1/fr
Application granted granted Critical
Publication of EP0185179B1 publication Critical patent/EP0185179B1/fr
Expired legal-status Critical Current

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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
    • H05B41/16—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
    • H05B41/20—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 no starting switch
    • H05B41/23—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 no starting switch for lamps not having an auxiliary starting electrode
    • H05B41/231—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 no starting switch for lamps not having an auxiliary starting electrode for high-pressure 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
    • 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

  • the invention relates to a circuit arrangement for igniting a low-pressure discharge lamp, which has at least one inductance and a capacitor connected in series in the operating circuit and which contains a series connection of a second capacitor and a temperature-dependent resistor in the ignition circuit parallel to the lamp and in series with its heating electrodes.
  • the so-called compact fluorescent lamps the ballast and / or the ignition device is already integrated in the base of the lamp.
  • the lamp is often operated at high frequency.
  • a resonance capacitor is arranged in the ignition circuit ("Electronic circuits" by Walter Hirschmann, Berlin / Kunststoff, SIEMENS Aktiengesellschaft, 1982, page 148).
  • a suitable choice of the resonance capacitor allows the level of the open circuit voltage at the lamp to be set within certain limits.
  • the voltage should be so high that lamp ignition is ensured even at lower ambient temperatures.
  • a circuit arrangement is known from US Pat. No. 2,231,999 in which a series connection of a resonance capacitor and a temperature-dependent resistor is arranged in the ignition circuit of the lamp.
  • the resistance of the thermistor used here (NTC resistance) is high at the moment of switching on and decreases according to its characteristics until the lamp is ignited.
  • NTC resistance The resistance of the thermistor used here
  • NTC resistance is high at the moment of switching on and decreases according to its characteristics until the lamp is ignited.
  • NTC resistance resistance of the thermistor used here
  • the object of the invention is to provide a starter-free ignition circuit suitable for low and high frequency for a fluorescent lamp, which enables reliable ignition of the lamp in a wide temperature range and which, with the greatest possible protection of the lamp, results in an extended service life during each operating state. At the same time, the annoying glow discharge should be suppressed if the lamp ignites quickly and without flickering.
  • the temperature-dependent resistor has a positive temperature coefficient and a third capacitor is connected in parallel.
  • the ratio of the capacities of the second capacitor to the third capacitor which are then in series in the ignition circuit of the lamp is in the range from 1: 1 to 5: 1, and their capacitance ratio is preferably 2: 1.
  • the PTC resistor bridging the third capacitor has a low initial resistance and has the effect that a high preheating current flows through the heating electrodes of the lamp from the first moment and heats them up quickly.
  • the operating frequency for the lamp is in the range between 20 kHz and 500 kHz. This makes it possible for the circuit components to have small geometric dimensions and for the entire ballast, including the components for the ignition circuit, to be integrated into the base of the low-pressure discharge lamp.
  • the circuit With the ignition circuit, a very short ignition time of only about 0.5 seconds is achieved. The lamp burns "almost" immediately after switching on. The otherwise annoying switch-on flickering of the fluorescent lamp and the glow discharge that shortens the service life do not occur. At the same time, cold ignition of the lamp is avoided, which protects the lamp and thus increases its service life. Due to the voltage regulation, the circuit is suitable for igniting fluorescent lamps at a wide variety of ambient temperatures.
  • a compact fluorescent lamp 1 with 15 W power consumption is operated at a frequency of approximately 45 kHz.
  • the mains voltage U N present at the connecting terminals 2, 3 is initially passed through a filter element 4.
  • the filtered AC voltage is then converted into a screened DC voltage by means of a rectifier 5 and a smoothing capacitor 6.
  • This DC voltage is applied to an inverter, which consists of the transistors 7, 8 with the corresponding emitter resistors 9, 10 and the associated control 11.
  • the control voltage is taken from a toroidal transformer 12, the primary winding 13 of which has only a few turns and is located in the operating circuit of the lamp 1. All of these switching elements are conventional, so that a block diagram was used to simplify the circuit.
  • the rectangular voltage generated by the inverter is supplied to the lamp 1 in the operating circuit via an inductor 14 and a separating capacitor 15 which blocks the direct current.
  • the inductance 14 is approx. 3 mH and the isolating capacitor 15 has a capacitance of approx. 47 n F.
  • the ignition circuit which is formed from a series connection of two resonance capacitors 18, 19, lies parallel to the lamp 1 and in series with its heating electrodes 16, 17, the resonance capacitor 18 being bridged by a PTC resistor 20.
  • the capacitance of the resonance capacitor 18 is 3.3 nF in the exemplary embodiment and that of the resonance capacitor 19 is 6.8 nF.
  • the series connection of the capacitors 18 and 19 forms the resonant capacitor C R.
  • the PTC thermistor 20 is of the type C 890 (SIEMENS).
  • FIG. 2 to 4 show the course of the heating current I H , the lamp voltage U o or U L and the lamp current I L.
  • the capacitor 18, which is smaller in capacity and determines the level of the lamp supply voltage, is bridged by the low-resistance thermistor 20.
  • a high heating current I H flows through the electrodes 16, 17 of the lamp 1 (FIG. 2).
  • a certain open circuit voltage U o is established on the lamp 1 (FIG. 3), the level of which is insufficient to ignite the lamp due to the bridged capacitor 18 and the lower voltage across the capacitor 19.
  • the current I L through the lamp 1 is negligibly small (FIG. 4).
  • the heating current I H decreases slightly.
  • the capacitances of the resonance capacitors 18, 19 are determined such that the desired high lamp supply voltage is set and both capacitors 18, 19 are loaded with approximately the same voltage despite their different capacitances. Together with the inductance 14 and the isolating capacitor 15, the necessary resonance voltage 22 is now set. With the increasing resonance voltage 22, the heating current I H rises again to approximately its original value. The current I L through the lamp 1 is not affected by these processes. The resonant open circuit voltage U o at the capacitors 18, 19 now increases until the lamp 1 ignites 23. Only about 0.5 seconds have passed between the times of switching on 21 and ignition 23. After lamp ignition 23 has taken place, the lamp voltage U L characteristic of lamp 1 is automatically set. The lamp current I L suddenly increases to its operating value. The preheating current I H drops to a low value due to the now reduced voltage and the capacitors 18, 19 lying in series.

Claims (4)

1. Montage pour l'allumage d'une lampe à décharge à basse pression, qui présente dans le circuit de service au moins une inductance (13, 14) et un condensateur (15) monté en série avec elle et qui contient dans le circuit d'allumage, en parallèle avec la lampe (1 ) et en série avec ses électrodes de chauffage (16, 17), le montage en série d'un deuxième condensateur (19) et d'une résistance (20) variable avec la température, caractérisé en ce que la résistance (20) variable avec la température, présente un coefficient de température positif et qu'un troisième condensateur (18) est monté en parallèle avec cette résistance.
2. Montage selon la revendication 1, caractérisé en ce que le rapport de la capacité du deuxième condensateur (19) à la capacité du troisième condensateur (18) est compris entre 1:1 et 5:1.
3. Montage selon les revendications 1 et 2, caractérisé en ce que le rapport de la capacité du deuxième condensateur (19) à la capacité du troisième condensateur (18) est d'environ 2:1.
4. Montage selon la revendications 1 à 3, caractérisé en ce que l'on fait fonctionner la lampe à décharge à basse pression (1 ) à une fréquence entre 20 kHz et 500 kHz.
EP85113901A 1984-11-16 1985-10-31 Circuit d'allumage pour une lampe à décharge à basse pression Expired EP0185179B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3441992 1984-11-16
DE19843441992 DE3441992A1 (de) 1984-11-16 1984-11-16 Schaltungsanordnung zur zuendung einer niederdruckentladungslampe

Publications (2)

Publication Number Publication Date
EP0185179A1 EP0185179A1 (fr) 1986-06-25
EP0185179B1 true EP0185179B1 (fr) 1989-03-22

Family

ID=6250511

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85113901A Expired EP0185179B1 (fr) 1984-11-16 1985-10-31 Circuit d'allumage pour une lampe à décharge à basse pression

Country Status (6)

Country Link
US (1) US4647817A (fr)
EP (1) EP0185179B1 (fr)
JP (1) JPH079836B2 (fr)
KR (1) KR940010821B1 (fr)
DE (2) DE3441992A1 (fr)
HK (1) HK91493A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0310218A1 (fr) * 1987-09-28 1989-04-05 Hubbell Incorporated Circuit de lampe fluorescente compacte
EP0320944A1 (fr) * 1987-12-17 1989-06-21 Pintsch Bamag Antriebs- und Verkehrstechnik GmbH Convertisseur pour une lampe à décharge
WO1991007070A1 (fr) * 1989-10-26 1991-05-16 Skyline Holding Ag Circuit de prechauffage pour lampes a fluorescence
EP0449127A1 (fr) * 1990-03-24 1991-10-02 ABBPATENT GmbH Dispositif de circuit pour le fonctionnement d'une lampe fluorescente à partir d'une source de tension continue
EP0779768A2 (fr) 1995-12-13 1997-06-18 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Procédé et circuit pour alimenter une lampe à décharge

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DE3611611A1 (de) * 1986-04-07 1987-10-08 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Schaltungsanordnung zum hochfrequenten betrieb einer niederdruckentladungslampe
DE3711814C2 (de) * 1986-05-09 1998-04-09 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Elektronisches Vorschaltgerät zum Betrieb von Leuchtstofflampen
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US4999547A (en) 1986-09-25 1991-03-12 Innovative Controls, Incorporated Ballast for high pressure sodium lamps having constant line and lamp wattage
US5008596A (en) * 1987-12-02 1991-04-16 Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen M.B.H. Fluorescent lamp high frequency operating circuit
DE3835121C2 (de) * 1987-12-02 1996-09-05 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Schaltungsanordnung zum Betrieb einer Niederdruckentladungslampe
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US4954754A (en) * 1988-05-02 1990-09-04 Nilssen Ole K Controlled electronic ballast
US5023516A (en) * 1988-05-10 1991-06-11 Matsushita Electric Industrial Co., Ltd. Discharge lamp operation apparatus
DE3901111A1 (de) * 1989-01-16 1990-07-19 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Schaltungsanordnung zum betrieb von entladungslampen
DE4005776C2 (de) * 1989-02-24 1999-08-05 Zenit Energietechnik Gmbh Schaltungsanordnung zum Starten und zum Betrieb einer Gasentladungslampe
US5289083A (en) * 1989-04-03 1994-02-22 Etta Industries, Inc. Resonant inverter circuitry for effecting fundamental or harmonic resonance mode starting of a gas discharge lamp
DE4005850A1 (de) * 1990-02-23 1991-08-29 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Schaltungsanordnung zum betrieb einer entladungslampe
DE9015674U1 (fr) * 1990-11-15 1992-03-12 Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh, 8000 Muenchen, De
US5138235A (en) * 1991-03-04 1992-08-11 Gte Products Corporation Starting and operating circuit for arc discharge lamp
DE4119775A1 (de) * 1991-06-15 1992-12-17 Vossloh Schwabe Gmbh Vorschaltgeraet mit gesteuerter heizzeit
EP0583838B1 (fr) * 1992-08-20 1997-01-15 Koninklijke Philips Electronics N.V. Circuit ballast de lampe
US5483125A (en) * 1993-12-06 1996-01-09 General Electric Company Ballast circuit for a gas discharge lamp having a cathode pre-heat arrangement
US5686799A (en) * 1994-03-25 1997-11-11 Pacific Scientific Company Ballast circuit for compact fluorescent lamp
DE4410492A1 (de) * 1994-03-25 1995-09-28 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Schaltungsanordnung zum Betrieb von Niederdruckentladungslampen
US5691606A (en) * 1994-09-30 1997-11-25 Pacific Scientific Company Ballast circuit for fluorescent lamp
US5821699A (en) * 1994-09-30 1998-10-13 Pacific Scientific Ballast circuit for fluorescent lamps
US6037722A (en) * 1994-09-30 2000-03-14 Pacific Scientific Dimmable ballast apparatus and method for controlling power delivered to a fluorescent lamp
US5596247A (en) * 1994-10-03 1997-01-21 Pacific Scientific Company Compact dimmable fluorescent lamps with central dimming ring
ATE187295T1 (de) 1995-07-05 1999-12-15 Magnetek Spa Schaltung zum betreiben von entladungslampen mit vorgeheizten wendeln
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US5877595A (en) * 1996-09-06 1999-03-02 General Electric Company High power factor ballast circuit with complementary converter switches
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CN1180663C (zh) * 1998-01-19 2004-12-15 马士科技有限公司 荧光灯电子镇流器电路
US6064155A (en) * 1998-05-04 2000-05-16 Matsushita Electric Works Research And Development Labratory Inc Compact fluorescent lamp as a retrofit for an incandescent lamp
JP3600976B2 (ja) * 1998-07-14 2004-12-15 三菱電機株式会社 放電灯点灯装置
US6057648A (en) * 1998-08-25 2000-05-02 General Electric Company Gas discharge lamp ballast with piezoelectric transformer
DE19838830A1 (de) * 1998-08-26 2000-03-02 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Verbesserte Anlaufschaltung für Niederdruck-Entladungslampe
US6078143A (en) * 1998-11-16 2000-06-20 General Electric Company Gas discharge lamp ballast with output voltage clamping circuit
US6150769A (en) * 1999-01-29 2000-11-21 General Electric Company Gas discharge lamp ballast with tapless feedback circuit
US6153983A (en) * 1999-07-21 2000-11-28 General Electric Company Full wave electronic starter
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0310218A1 (fr) * 1987-09-28 1989-04-05 Hubbell Incorporated Circuit de lampe fluorescente compacte
EP0320944A1 (fr) * 1987-12-17 1989-06-21 Pintsch Bamag Antriebs- und Verkehrstechnik GmbH Convertisseur pour une lampe à décharge
WO1991007070A1 (fr) * 1989-10-26 1991-05-16 Skyline Holding Ag Circuit de prechauffage pour lampes a fluorescence
EP0449127A1 (fr) * 1990-03-24 1991-10-02 ABBPATENT GmbH Dispositif de circuit pour le fonctionnement d'une lampe fluorescente à partir d'une source de tension continue
EP0779768A2 (fr) 1995-12-13 1997-06-18 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Procédé et circuit pour alimenter une lampe à décharge

Also Published As

Publication number Publication date
DE3569072D1 (en) 1989-04-27
KR860004563A (ko) 1986-06-23
US4647817A (en) 1987-03-03
EP0185179A1 (fr) 1986-06-25
HK91493A (en) 1993-09-10
KR940010821B1 (ko) 1994-11-16
JPH079836B2 (ja) 1995-02-01
JPS61126795A (ja) 1986-06-14
DE3441992A1 (de) 1986-05-22

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