EP0092654A2 - Appareil ballast - Google Patents

Appareil ballast Download PDF

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Publication number
EP0092654A2
EP0092654A2 EP83101515A EP83101515A EP0092654A2 EP 0092654 A2 EP0092654 A2 EP 0092654A2 EP 83101515 A EP83101515 A EP 83101515A EP 83101515 A EP83101515 A EP 83101515A EP 0092654 A2 EP0092654 A2 EP 0092654A2
Authority
EP
European Patent Office
Prior art keywords
inverter
circuit
discharge lamp
series
operating frequency
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.)
Ceased
Application number
EP83101515A
Other languages
German (de)
English (en)
Other versions
EP0092654A3 (fr
Inventor
Max Ing. Grad. Kerscher
Anh-Dung Dipl.-Ing. Nguyen
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to EP83101515A priority Critical patent/EP0092654A3/fr
Publication of EP0092654A2 publication Critical patent/EP0092654A2/fr
Publication of EP0092654A3 publication Critical patent/EP0092654A3/fr
Ceased 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
    • H05B41/26—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

Definitions

  • the invention relates to a ballast according to the preamble of claim 1.
  • the invention has for its object to provide sufficient preheating before ignition of the discharge lamp, since this can increase the life of such a lamp.
  • the solution to this problem according to the invention is to control the operating frequency of the inverter to such a high value during a sufficiently long preheating time that the voltage at the lamp is not sufficient to ignite it even at a high ambient temperature.
  • the reduction in the voltage at the lamp is due to the fact that the operating point on the resonance curve of the series resonance circuit is moved correspondingly far away from the resonance frequency.
  • the inverter W contains two transistors V7, V8 connected in series between its terminals 11, 8 on the storage capacitor C18. Parallel to the switching path of the transistor V7 is a series resonance circuit with the inductor L7 and the capacitor C23 in series with a switching capacitor C22 and the primary winding L81 of a saturation transformer T8 with secondary windings L82, L83, L84 and L85.
  • the discharge lamp L is arranged in parallel with the capacitor C23, so that its electrodes are connected in series with the series resonant circuit.
  • a circuit known per se is used for alternating control of the transistors V7, V8, of which only the secondary windings L83, L84 of the saturation transformer T8 are shown. This results in an alternating charge of the reversing capacitor C22 via V8 from C18 and subsequently a discharge via V7.
  • the operating frequency of the inverter determined by the saturation transformer, is slightly above the resonance frequency of the series resonance circuit: This creates a gap between the reversal of V7 and V8.
  • a delayed start-up of the inverter is ensured with the aid of a capacitor C19, which is only charged when controller X is working: If there is sufficient voltage at C19, V8 is controlled by a trigger diode D34 and C19 is discharged again via D33.
  • the saturation transformer T8 has an additional secondary winding L82, through which a current-dependent disconnection of the inverter is effected via a bistable switching device K.
  • the switching device K contains a comparator V12 fed back via a diode D16 and a transistor V10 controlled by it.
  • the shutdown is dependent on the voltage across the capacitors C11 and C10, which are discharged via R14 and charged via a diode D41 and a resistor R41 with a voltage which is supplied by the secondary winding L82 of the transformer T8 and which is proportional to the current through L7 is.
  • a switching device S is also controlled, of which only one transistor V18 is shown, by means of which the secondary winding L85 of the saturation transformer T8 can be short-circuited, which for this purpose lies between the AC terminals of a rectifier bridge.
  • the transistor V18 is turned on, for example, by a monostable multivibrator as soon as the inverter starts to work and a voltage occurs at C11.
  • the winding L85 is then short-circuited, so that the inverter oscillates at a higher frequency, as a result of which the voltage at the series resonant circuit and thus at the lamp is reduced to a value which is insufficient for ignition.
  • transistor V18 After the return period of the monostable trigger stage, which depends on the required preheating of the lamp, transistor V18 goes into the blocking state again and removes the short circuit of winding L85: the inverter then operates at its normal operating frequency and an open circuit voltage sufficient for ignition.

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
EP83101515A 1981-04-14 1981-04-14 Appareil ballast Ceased EP0092654A3 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP83101515A EP0092654A3 (fr) 1981-04-14 1981-04-14 Appareil ballast

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP83101515A EP0092654A3 (fr) 1981-04-14 1981-04-14 Appareil ballast

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP81900979A Division EP0050131B1 (fr) 1980-04-15 1981-04-14 Ballast pour une lampe a decharge
EP81900979.6 Division 1981-04-14

Publications (2)

Publication Number Publication Date
EP0092654A2 true EP0092654A2 (fr) 1983-11-02
EP0092654A3 EP0092654A3 (fr) 1984-04-18

Family

ID=8190296

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83101515A Ceased EP0092654A3 (fr) 1981-04-14 1981-04-14 Appareil ballast

Country Status (1)

Country Link
EP (1) EP0092654A3 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0114370A1 (fr) * 1983-01-14 1984-08-01 Siemens Aktiengesellschaft Procédé pour mettre en oeuvre une lampe à décharge
DE3437554A1 (de) * 1984-10-12 1986-04-24 Siemens AG, 1000 Berlin und 8000 München Wechselrichter zur speisung von entladungslampen
NL8403441A (nl) * 1984-11-09 1986-06-02 Maars Holding Bv Inrichting voor het afhankelijk van omgevingslicht vanuit een laagfrequent wisselspanningsbron voeden van een of meer fluorescentielampen.
EP0741503A1 (fr) * 1995-05-04 1996-11-06 ETA PLUS ELECTRONIC GMBH u. CO. KG. Procédé et circuit d'opération des lampes à décharge à haute pression
WO1998051130A1 (fr) * 1997-05-06 1998-11-12 Nlgi Electronics Ltd. Ballast electronique simple et efficace
WO2006056143A1 (fr) * 2004-11-29 2006-06-01 Century Concept Ltd. Regulateur electronique a commande de prechauffage et de gradation

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2398427A1 (fr) * 1977-07-19 1979-02-16 Legrand Sa Dispositif d'alimentation pour tubes fluorescents, et application notamment aux blocs d'eclairage de securite
GB2014000A (en) * 1978-02-03 1979-08-15 Philips Nv Arrangement for starting and feeding a metal vapour discharge lamp provided with a preheatable elctrode
FR2461429A1 (fr) * 1979-07-11 1981-01-30 Sabir Perfectionnement apporte aux convertisseurs de frequence utilises pour l'allumage et l'alimentation d'une lampe a decharge
WO1981003102A1 (fr) * 1980-04-15 1981-10-29 Siemens Ag Ballast pour la connexion d'une lampe a decharge
DE3031322A1 (de) * 1980-08-20 1982-04-01 Licentia Gmbh Schaltungsanordnung fuer niederspannungs-leuchtstofflampen
EP0056642A1 (fr) * 1981-01-20 1982-07-28 Gerhard Prof. Dipl.-Phys. Wollank Méthode et circuit pour chauffer, allumer ainsi que pour commander ou régler le courant électrique de lampes de décharge à gaz à basse pression
FR2520575A1 (fr) * 1982-01-26 1983-07-29 Thomson Brandt Gmbh Circuit d'alimentation d'un tube luminescent
EP0093469A2 (fr) * 1982-04-20 1983-11-09 Koninklijke Philips Electronics N.V. Convertisseur courant continu/courant alternatif pour l'allumage et pour l'alimentation de lampes à décharges dans le gaz ou dans la vapeur

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2398427A1 (fr) * 1977-07-19 1979-02-16 Legrand Sa Dispositif d'alimentation pour tubes fluorescents, et application notamment aux blocs d'eclairage de securite
GB2014000A (en) * 1978-02-03 1979-08-15 Philips Nv Arrangement for starting and feeding a metal vapour discharge lamp provided with a preheatable elctrode
FR2461429A1 (fr) * 1979-07-11 1981-01-30 Sabir Perfectionnement apporte aux convertisseurs de frequence utilises pour l'allumage et l'alimentation d'une lampe a decharge
WO1981003102A1 (fr) * 1980-04-15 1981-10-29 Siemens Ag Ballast pour la connexion d'une lampe a decharge
DE3031322A1 (de) * 1980-08-20 1982-04-01 Licentia Gmbh Schaltungsanordnung fuer niederspannungs-leuchtstofflampen
EP0056642A1 (fr) * 1981-01-20 1982-07-28 Gerhard Prof. Dipl.-Phys. Wollank Méthode et circuit pour chauffer, allumer ainsi que pour commander ou régler le courant électrique de lampes de décharge à gaz à basse pression
FR2520575A1 (fr) * 1982-01-26 1983-07-29 Thomson Brandt Gmbh Circuit d'alimentation d'un tube luminescent
EP0093469A2 (fr) * 1982-04-20 1983-11-09 Koninklijke Philips Electronics N.V. Convertisseur courant continu/courant alternatif pour l'allumage et pour l'alimentation de lampes à décharges dans le gaz ou dans la vapeur

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0114370A1 (fr) * 1983-01-14 1984-08-01 Siemens Aktiengesellschaft Procédé pour mettre en oeuvre une lampe à décharge
DE3437554A1 (de) * 1984-10-12 1986-04-24 Siemens AG, 1000 Berlin und 8000 München Wechselrichter zur speisung von entladungslampen
NL8403441A (nl) * 1984-11-09 1986-06-02 Maars Holding Bv Inrichting voor het afhankelijk van omgevingslicht vanuit een laagfrequent wisselspanningsbron voeden van een of meer fluorescentielampen.
EP0741503A1 (fr) * 1995-05-04 1996-11-06 ETA PLUS ELECTRONIC GMBH u. CO. KG. Procédé et circuit d'opération des lampes à décharge à haute pression
WO1998051130A1 (fr) * 1997-05-06 1998-11-12 Nlgi Electronics Ltd. Ballast electronique simple et efficace
WO2006056143A1 (fr) * 2004-11-29 2006-06-01 Century Concept Ltd. Regulateur electronique a commande de prechauffage et de gradation
US7728528B2 (en) 2004-11-29 2010-06-01 Century Concept Ltd Electronic ballast with preheating and dimming control

Also Published As

Publication number Publication date
EP0092654A3 (fr) 1984-04-18

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Inventor name: KERSCHER, MAX, ING. GRAD.