EP0123963A2 - Dispositif de circuit pour la commande d'intensité de lumière pour lampe à fluorescence - Google Patents

Dispositif de circuit pour la commande d'intensité de lumière pour lampe à fluorescence Download PDF

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Publication number
EP0123963A2
EP0123963A2 EP84103836A EP84103836A EP0123963A2 EP 0123963 A2 EP0123963 A2 EP 0123963A2 EP 84103836 A EP84103836 A EP 84103836A EP 84103836 A EP84103836 A EP 84103836A EP 0123963 A2 EP0123963 A2 EP 0123963A2
Authority
EP
European Patent Office
Prior art keywords
ignition
fluorescent lamps
circuit arrangement
controlling
dimmer
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.)
Withdrawn
Application number
EP84103836A
Other languages
German (de)
English (en)
Other versions
EP0123963A3 (fr
Inventor
Robert Zapp
Bang Bui-Huu
Gerhard Clever
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.)
BBC Brown Boveri AG Germany
Original Assignee
BBC Brown Boveri AG Germany
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 BBC Brown Boveri AG Germany filed Critical BBC Brown Boveri AG Germany
Publication of EP0123963A2 publication Critical patent/EP0123963A2/fr
Publication of EP0123963A3 publication Critical patent/EP0123963A3/fr
Withdrawn legal-status Critical Current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
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • H05B41/39—Controlling the intensity of light continuously
    • H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
    • H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations
    • H05B41/3924—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations by phase control, e.g. using a triac

Definitions

  • the invention relates to a circuit arrangement for controlling the brightness of a fluorescent lamp or a plurality of fluorescent lamps according to the preamble of claim 1.
  • the known circuit arrangements are well suited for controlling the fluorescent lamps with a diameter of 38 mm that have been in use for many years. In More recently, fluorescent lamps with a diameter of 26 mm are also used. The brightness of fluorescent lamps with a diameter of 26 mm cannot be easily controlled with the known circuit arrangements, since they have a higher ignition voltage compared to fluorescent lamps with a diameter of 38 mm, which the known circuit arrangements do not or cannot reliably achieve.
  • the invention is based on the object of specifying a circuit arrangement for controlling the brightness of fluorescent lamps with an increased ignition voltage, it being possible to continue using the previously used standard components.
  • the invention advantageously makes it possible to continue using existing standard components for brightness control when converting lamps with a diameter of 38 mm to lamps with increased ignition voltage.
  • An ignition device only needs to be installed.
  • a circuit arrangement for brightness control of fluorescent lamps is shown.
  • This circuit arrangement is based on a conventional arrangement of a fluorescent lamp 7 with a ballast 2, a heating transformer 4 for preheating the electrodes 9 of the fluorescent lamp 7, a dimmer 1 and a base load device 3.
  • the Netzspan voltage with the phase L and the neutral conductor N is connected via the ballast 2 to one of the electrodes 9 of the fluorescent lamp 7 and also to the S connection of the base load device 3.
  • the output L1 of the dimmer 1, which is in the dimmer 1 via a switch with the phase L is connected to a first connection of the primary winding of the heating transformer 4 and to the L1 connection of the base load device 3.
  • the neutral conductor N leads to the N connection of the base load device 3, to a second connection of the primary winding of the heating transformer 4 and to the electrode 9 of the fluorescent lamp 7 which is not connected to the ballast 2.
  • the secondary windings of the heating transformer 4 are each connected to the electrodes 9.
  • the basic load device 3 includes an inductive load, which is connected to the terminals N and S, and a radio interference suppression capacitor between the L1 and the N - terminal.
  • an incandescent lamp load eg 25W
  • the outputs L1 and N of the dimmer 1 are switched, which results in better control properties when using fluorescent lamps 7 with a diameter of 26 mm than when using a base load device 3.
  • the known ignition aid in the form of an ignition strip or a screen grid 5 can also be used advantageously for fluorescent lamps 7 with a diameter of 26 mm to improve the control properties.
  • Such screen grids 5 are connected to earth PE or to the neutral conductor N via a protective resistor 8.
  • an ignition device 6 is additionally according to the invention intended.
  • the ignition device 6 supplies synchronous ignition pulses to increase the phase gating voltage at the output S of the dimmer 1, which are fed to the electrodes 9 of the fluorescent lamp 7.
  • the ignition device 6 contains a series connection of a phase control evaluation 61, a switch-on delay 62, an interference pulse blanking 63, a pulse amplifier 64, an ignition pulse generator 65 and an ignition pulse transformer 66.
  • a power supply unit 67 is also provided for supplying the aforementioned components.
  • phase gating evaluation 61 The input of the phase gating evaluation 61 is connected to the controlled output S of the dimmer 1.
  • a square wave signal (e.g. 12V) is generated with Zener diodes, the rising edge of which runs synchronously with the phase control of the positive half-waves at the input.
  • a timing element only releases this square-wave signal about 4 ms after the mains voltage has passed zero.
  • the square-wave signal therefore appears at the output of the phase gating evaluation 61 in synchronism with the rise in the cut voltage, with the exception of the gating area below 4 ms, in that a voltage rise triggers a square-wave signal only 4 ms after the zero crossing.
  • the square-wave signals generated by the phase gating evaluation 61 then pass through the switch-on delay 62.
  • the square-wave signals are blocked therein within the first 2 seconds after the dimmer 1 has been switched on. This delay time results from the preheating time which is expedient to be observed in order to protect the electrodes 9.
  • the square-wave signals at the output of the interference pulse blanking 63 are then amplified in a transistor circuit in the pulse amplifier 64 and fed via a fiber-carrying thyristors in the ignition pulse generator 65.
  • the ignition pulse generator 65 is supplied with the mains voltage and contains two thyristors and two capacitors, which are charged to + 300V and -300V. Controlled by the square-wave signals from the pulse amplifier 64, the thyristors discharge the capacitors via the primary winding of the ignition pulse transformer 66. On the secondary side of the ignition pulse transformer 66, ignition pulses of approximately 1.5 kV are generated, which are applied to the electrodes 9 of the fluorescent lamp 7 via a capacitor 68. The duration of the ignition pulses is such that flicker-free operation of the fluorescent lamp 7 is ensured.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
  • Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
  • Optical Head (AREA)
EP84103836A 1983-04-30 1984-04-06 Dispositif de circuit pour la commande d'intensité de lumière pour lampe à fluorescence Withdrawn EP0123963A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833315793 DE3315793A1 (de) 1983-04-30 1983-04-30 Schaltungsanordnung zur helligkeitssteuerung von leuchtstofflampen
DE3315793 1983-04-30

Publications (2)

Publication Number Publication Date
EP0123963A2 true EP0123963A2 (fr) 1984-11-07
EP0123963A3 EP0123963A3 (fr) 1985-05-29

Family

ID=6197828

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84103836A Withdrawn EP0123963A3 (fr) 1983-04-30 1984-04-06 Dispositif de circuit pour la commande d'intensité de lumière pour lampe à fluorescence

Country Status (4)

Country Link
EP (1) EP0123963A3 (fr)
DE (1) DE3315793A1 (fr)
FI (1) FI841690A (fr)
NO (1) NO841699L (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0353382A1 (fr) * 1988-08-02 1990-02-07 Heraeus Kulzer GmbH Circuit d'alimentation d'une lampe à décharge basse pression
WO2003079739A1 (fr) * 2002-03-20 2003-09-25 Gernot Hass Systeme de projecteur comportant une unite de regulation
EP1370122A2 (fr) * 2002-05-31 2003-12-10 Matsushita Electric Industrial Co., Ltd. Ballast de gradation pour lampe à décharge

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2277415B (en) * 1993-04-23 1997-12-03 Matsushita Electric Works Ltd Discharge lamp lighting device
DE102008015441A1 (de) 2008-03-22 2010-06-10 Abb Ag Elektronische Stabilisierungs- und Zündhilfe für eine Leuchtstofflampe

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3875458A (en) * 1974-06-10 1975-04-01 Westinghouse Electric Corp Dimmer for discharge lamp utilizing a pulse enabling circuit
US4286196A (en) * 1980-02-14 1981-08-25 Auer William F Automatic dimmer cutout for arc lamp of fiber optic light source

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT267678B (de) * 1965-12-07 1969-01-10 Elin Union Ag Schaltung für eine aus einer Wechselspannungsquelle über steuerbare elektrische Ventile gespeiste Leuchtstofflampe

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3875458A (en) * 1974-06-10 1975-04-01 Westinghouse Electric Corp Dimmer for discharge lamp utilizing a pulse enabling circuit
US4286196A (en) * 1980-02-14 1981-08-25 Auer William F Automatic dimmer cutout for arc lamp of fiber optic light source

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0353382A1 (fr) * 1988-08-02 1990-02-07 Heraeus Kulzer GmbH Circuit d'alimentation d'une lampe à décharge basse pression
WO2003079739A1 (fr) * 2002-03-20 2003-09-25 Gernot Hass Systeme de projecteur comportant une unite de regulation
EP1370122A2 (fr) * 2002-05-31 2003-12-10 Matsushita Electric Industrial Co., Ltd. Ballast de gradation pour lampe à décharge
EP1370122A3 (fr) * 2002-05-31 2004-03-10 Matsushita Electric Industrial Co., Ltd. Ballast de gradation pour lampe à décharge
US6788006B2 (en) 2002-05-31 2004-09-07 Matsushita Electric Industrial Co., Ltd. Discharge lamp ballast with dimming

Also Published As

Publication number Publication date
NO841699L (no) 1984-10-31
EP0123963A3 (fr) 1985-05-29
DE3315793A1 (de) 1984-10-31
FI841690A (fi) 1984-10-31
FI841690A0 (fi) 1984-04-27
DE3315793C2 (fr) 1992-01-30

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Effective date: 19871102

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Inventor name: CLEVER, GERHARD

Inventor name: ZAPP, ROBERT

Inventor name: BUI-HUU, BANG