DE4018865A1 - ELECTRONIC CONTROL UNIT FOR THE OPERATION OF DISCHARGE LAMPS - Google Patents

ELECTRONIC CONTROL UNIT FOR THE OPERATION OF DISCHARGE LAMPS

Info

Publication number
DE4018865A1
DE4018865A1 DE4018865A DE4018865A DE4018865A1 DE 4018865 A1 DE4018865 A1 DE 4018865A1 DE 4018865 A DE4018865 A DE 4018865A DE 4018865 A DE4018865 A DE 4018865A DE 4018865 A1 DE4018865 A1 DE 4018865A1
Authority
DE
Germany
Prior art keywords
voltage
circuit
control circuit
parallel
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.)
Withdrawn
Application number
DE4018865A
Other languages
German (de)
Inventor
Dieter Dipl Ing Albert
Peter Prof Dr Ing Marx
Burkhard Prof Dr Ing Karstaedt
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.)
Semperlux GmbH
Original Assignee
Semperlux 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
Priority claimed from DE19904001549 external-priority patent/DE4001549A1/en
Application filed by Semperlux GmbH filed Critical Semperlux GmbH
Priority to DE4018865A priority Critical patent/DE4018865A1/en
Priority to DE59105746T priority patent/DE59105746D1/en
Priority to EP91250009A priority patent/EP0439240B1/en
Priority to AT91250009T priority patent/ATE124202T1/en
Publication of DE4018865A1 publication Critical patent/DE4018865A1/en
Withdrawn legal-status Critical Current

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
    • H05B41/282—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
    • H05B41/2825—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 by means of a bridge converter in the final stage
    • H05B41/2828—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 by means of a bridge converter in the final stage using control circuits for the switching elements

Abstract

An electronic ballast for low-pressure discharge lamps supplied from DC or AC voltage networks, having an invertor (1) which supplies at least one lamp (8) via a capacitive reactance (6) connected in parallel with it and an inductive reactance (2) connected in series with it, an electronic harmonic filter (4) with a step-up inductor (L3) and a digital control circuit (2) for the invertor, which control circuit is connected to a DC voltage supply circuit (3). The DC voltage supply circuit is connected to the harmonic filter and has a capacitor (C3) which can be charged to the supply voltage of the control circuit via a first transistor (T4). The first transistor switches on immediately after the supply voltage of the electronic ballast has switched on. A blocking circuit (R6, R7, C4, T5) switches the first transistor off once the capacitor is charged and the latter is continuously recharged via an additional auxiliary winding (N1) of the step-up inductor and a rectifier circuit (D1-D4) connected thereto. In consequence, the voltage required to supply the control circuit is made available immediately after the start, in the case of both DC and AC voltage operation. <IMAGE>

Description

Die Erfindung betrifft ein neuartiges elektronisches Vorschaltgerät zum Betrieb von Entladungslampen - z. B. Leuchtstofflampen -, welches eine Variation der Lampenhelligkeit (sog. Dimmen) ermöglicht. Der Stand der Technik ist in der Patentanmeldung P 40 01 549.17 ausführlich erläutert.The invention relates to a novel electronic ballast for operating discharge lamps - e.g. B. fluorescent lamps -, which enables a variation of the lamp brightness (so-called dimming). The prior art is detailed in patent application P 40 01 549.17 explained.

Die dort beschriebene Schaltungsanordnung weist den folgenden Nachteil auf:The circuit arrangement described there has the following Disadvantage to:

  • 1. Das Dimmverhalten der Leuchtstofflampen ist wegen des Auftretens von sog. "laufenden Schichten" - das sind visuell störende Instabilitäten der Bogenentladung - bei sehr weit herunter gedimmten Lampen, d. h. unterhalb von 10% der maximalen Helligkeit, noch nicht optimal.1. The dimming behavior of the fluorescent lamps is due to the occurrence of so-called "running layers" - these are visual disruptive instabilities of the arc discharge - at very far dimmed lamps, d. H. below 10% of the maximum Brightness, not yet optimal.

Der beschriebene Nachteil wird vermieden, indem erfindungsgemäß ein Dämpfungsglied, bestehend aus der Reihenschaltung einer Diode und einem ohmschen bzw. komplexen Widerstand parallel zu den beiden Lampenelektroden und zum Serienschwingkreiskondensator C der Leuchtstofflampe geschaltet wird.The described disadvantage is avoided by the invention an attenuator, consisting of the series connection of a Diode and an ohmic or complex resistor in parallel to the two lamp electrodes and the series resonant circuit capacitor C the fluorescent lamp is switched.

Ein Ausführungsbeispiel des elektronischen Vorschaltgerätes zeigt Fig. 1.1 shows an exemplary embodiment of the electronic ballast.

Das Dämpfungsglied - Reihenschaltung von Widerstand R und Diode D ist parallel zu den Lampenelektroden und zum Serienschwingkreiskondensator C geschaltet, womit ein Verschwinden der visuell störenden sog. "laufenden Schichten" erreicht wird.The attenuator - series connection of resistor R and Diode D is parallel to the lamp electrodes and to the series resonant circuit capacitor C switched, with which a disappearance the visually disturbing so-called "running layers" is achieved.

BezugszeichenlisteReference symbol list

IC1 = PWM, integrierte Schaltung mit Pulsweitenmodulator
IC2 = integrierte Steuerschaltung für sinusförmige Netzstromaufnahme
HVIC = Hochvolt-Halbbrückentreiber
LL = Entladungslampen
L = Drosselspule
C, C1, C2 = Koppelkondensator
T1, T2 = Leistungstransistoren
R, R3-R7 = ohmsche Widerstände
D, D1-D4 = Gleichrichterdioden
D5-D9 = Leistungsgleichrichterdioden
D10, D11 = Z-Dioden
N1 = Trafohilfswicklung (Hochsetzstellerdrossel L3)
N2 = Detektorspule (Hochsetzstellerdrossel L3)
N3 = Drosselspule (Hochsetzstellerdrossel L3)
T3 = Leistungstransistor
C5 = Hochvoltladekondensator
Ubr = Versorgungsspannung für die Brückenschaltung
C3, C4 = Ladekondensator
T3 = SchalttransistorIC 1 = PWM, integrated circuit with pulse width modulator
IC 2 = integrated control circuit for sinusoidal mains current consumption
HVIC = high-voltage half-bridge driver
LL = discharge lamps
L = choke coil
C, C 1 , C 2 = coupling capacitor
T 1 , T 2 = power transistors
R, R 3 -R 7 = ohmic resistances
D, D 1 -D 4 = rectifier diodes
D 5 -D 9 = power rectifier diodes
D 10 , D 11 = Z diodes
N 1 = transformer auxiliary winding (step-up converter choke L 3 )
N 2 = detector coil (step-up converter choke L 3 )
N 3 = choke coil (step-up converter choke L 3 )
T 3 = power transistor
C 5 = high-voltage charging capacitor
Ubr = supply voltage for the bridge circuit
C 3 , C 4 = charging capacitor
T 3 = switching transistor

Claims (1)

Elektronisches Vorschaltgerät zum Betrieb von Niederdruck-Entladungslampen für Gleich- und Wechselspannungsbetrieb, bestehend aus einem Wechselrichter in Halbbrückenschaltung, der die Lampe über einen zu ihr parallel geschalteten kapazitiven Blindwiderstand C und einen dazu in Serie geschalteten kapazitiven Blindwiderstand L speist, einem Gleichspannungszwischenkreis, gebildet durch ein elektronisches Oberschwingungsfilter und einer digitalen Ansteuerschaltung für die Halbbrückentransistoren, dadurch gekennzeichnet, daß zur Beseitigung der sog. "laufenden Schichten" (Instabilität der Bogenentladung), die beim Dimmen der Leuchtstofflampen auftreten und eine visuelle Störung bewirken, ein Dämpfungsglied, bestehend aus der Reihenschaltung einer Diode D und einem ohmschen bzw. komplexen Widerstand R parallel zu den beiden Lampenelektroden der Leuchtstofflampen und gleichzeitig damit auch parallel zum Serienschwingkreiskondensator C geschaltet wird.Electronic ballast for the operation of low-pressure discharge lamps for direct and alternating voltage operation, consisting of an inverter in a half-bridge circuit, which feeds the lamp via a capacitive reactance C connected in parallel with it and a capacitive reactance L connected in series, a DC voltage intermediate circuit, formed by a Electronic harmonic filter and a digital control circuit for the half-bridge transistors, characterized in that an attenuator consisting of the series connection of a diode is used to eliminate the so-called "running layers" (instability of the arc discharge) which occur when the fluorescent lamps are dimmed and cause a visual disturbance D and an ohmic or complex resistor R is connected in parallel to the two lamp electrodes of the fluorescent lamps and at the same time thus also in parallel to the series resonant circuit capacitor C.
DE4018865A 1990-01-20 1990-06-13 ELECTRONIC CONTROL UNIT FOR THE OPERATION OF DISCHARGE LAMPS Withdrawn DE4018865A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE4018865A DE4018865A1 (en) 1990-01-20 1990-06-13 ELECTRONIC CONTROL UNIT FOR THE OPERATION OF DISCHARGE LAMPS
DE59105746T DE59105746D1 (en) 1990-01-20 1991-01-17 Electronic ballast.
EP91250009A EP0439240B1 (en) 1990-01-20 1991-01-17 Electronic ballast
AT91250009T ATE124202T1 (en) 1990-01-20 1991-01-17 ELECTRONIC BALLAST.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19904001549 DE4001549A1 (en) 1990-01-20 1990-01-20 Electronic starter circuit for discharge lamps - has PWM integrated circuit with frequency varied to adjust brightness
DE4018865A DE4018865A1 (en) 1990-01-20 1990-06-13 ELECTRONIC CONTROL UNIT FOR THE OPERATION OF DISCHARGE LAMPS

Publications (1)

Publication Number Publication Date
DE4018865A1 true DE4018865A1 (en) 1991-12-19

Family

ID=25889237

Family Applications (2)

Application Number Title Priority Date Filing Date
DE4018865A Withdrawn DE4018865A1 (en) 1990-01-20 1990-06-13 ELECTRONIC CONTROL UNIT FOR THE OPERATION OF DISCHARGE LAMPS
DE59105746T Expired - Fee Related DE59105746D1 (en) 1990-01-20 1991-01-17 Electronic ballast.

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE59105746T Expired - Fee Related DE59105746D1 (en) 1990-01-20 1991-01-17 Electronic ballast.

Country Status (3)

Country Link
EP (1) EP0439240B1 (en)
AT (1) ATE124202T1 (en)
DE (2) DE4018865A1 (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3257561B2 (en) * 1991-09-30 2002-02-18 東芝ライテック株式会社 Discharge lamp lighting device and lighting equipment
CH683219A5 (en) * 1992-04-06 1994-01-31 Starkstrom Elektronik Ag Electronic ballast for a low-pressure gas discharge lamp.
EP0620700A1 (en) * 1993-04-15 1994-10-19 Heinrich Korte Electronic ballast
JP2750072B2 (en) * 1993-07-27 1998-05-13 松下電工株式会社 Power converter
DE4328306A1 (en) * 1993-08-23 1994-03-17 Spindler Bernhard Dipl Ing Circuit for HF operation for low presence discharge lamps - has rectifier and inverter and several opto-couplers, with controlled load circuit
DE4406000A1 (en) * 1994-02-24 1995-08-31 Hilite Lighting And Electronic Dimmer for gas-discharge lamps driven off converter producing HF voltage
DE19543419A1 (en) * 1995-11-21 1997-05-22 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Method and circuit arrangement for operating cold cathode fluorescent lamps
DE29605087U1 (en) * 1996-03-19 1996-08-08 Trilux Lenze Gmbh & Co Kg Fluorescent ballast with step-up converter
US5719472A (en) * 1996-05-13 1998-02-17 General Electric Company High voltage IC-driven half-bridge gas discharge ballast
DE29609839U1 (en) * 1996-06-04 1996-08-22 Trilux Lenze Gmbh & Co Kg Fluorescent ballast
JP4252117B2 (en) 1997-05-16 2009-04-08 株式会社デンソー Discharge lamp device
DE10106438A1 (en) * 2001-02-09 2002-08-14 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Ballast for operating electric lamps
DE10134566A1 (en) * 2001-07-16 2003-02-06 Tridonicatco Gmbh & Co Kg Electronic ballast with preheating mode
WO2008128575A1 (en) * 2007-04-23 2008-10-30 Osram Gesellschaft mit beschränkter Haftung Circuit configuration for operating at least one discharge lamp and method for generating an auxiliary voltage
DE102007058982A1 (en) * 2007-12-07 2009-06-10 Tridonicatco Gmbh & Co. Kg Operating device for e.g. gas-discharge lamp in emergency light device, has interface formed as input port, and control unit designed to switch interface such that interface serves for voltage supply for illuminating unit i.e. LED
WO2012143906A2 (en) 2011-04-22 2012-10-26 Koninklijke Philips Electronics N.V. Power supply circuit for a pfc converter
JP6233568B2 (en) * 2013-09-27 2017-11-22 東芝ライテック株式会社 Power supply circuit and lighting device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0059064B1 (en) * 1981-02-21 1985-10-02 THORN EMI plc Lamp driver circuits
NL8702847A (en) * 1987-11-27 1989-06-16 Philips Nv DC-AC BRIDGE SWITCH.
DE3888675D1 (en) * 1988-04-20 1994-04-28 Zumtobel Ag Dornbirn Ballast for a discharge lamp.
FR2644314A1 (en) * 1989-03-10 1990-09-14 Harel Jean Claude ELECTRONIC STARTING AND SUPPLY DEVICE FOR FLUORESCENT TUBES WITH PREHEATABLE ELECTRODES

Also Published As

Publication number Publication date
EP0439240A3 (en) 1992-08-19
EP0439240A2 (en) 1991-07-31
EP0439240B1 (en) 1995-06-21
DE59105746D1 (en) 1995-07-27
ATE124202T1 (en) 1995-07-15

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