EP1526761B1 - Circuit pour alimenter une lampe à barrière diélectrique muni d'une protection contre les surtensions - Google Patents

Circuit pour alimenter une lampe à barrière diélectrique muni d'une protection contre les surtensions Download PDF

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Publication number
EP1526761B1
EP1526761B1 EP04022966A EP04022966A EP1526761B1 EP 1526761 B1 EP1526761 B1 EP 1526761B1 EP 04022966 A EP04022966 A EP 04022966A EP 04022966 A EP04022966 A EP 04022966A EP 1526761 B1 EP1526761 B1 EP 1526761B1
Authority
EP
European Patent Office
Prior art keywords
lamp
dbd
switching transistor
converter
operating 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 - Lifetime
Application number
EP04022966A
Other languages
German (de)
English (en)
Other versions
EP1526761A2 (fr
EP1526761A3 (fr
Inventor
Oskar Schallmoser
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 EP1526761A2 publication Critical patent/EP1526761A2/fr
Publication of EP1526761A3 publication Critical patent/EP1526761A3/fr
Application granted granted Critical
Publication of EP1526761B1 publication Critical patent/EP1526761B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • H05B41/24—Circuit arrangements in which the lamp is fed by high frequency AC, or with separate oscillator frequency
    • 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
    • H05B41/288—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 without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium 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
    • H05B41/288—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 without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps
    • H05B41/292—Arrangements for protecting lamps or circuits against abnormal operating conditions

Definitions

  • the input x of the monoflop M is in turn driven by a comparator K, at the positive input of a reference voltage U 0 to ground and at its negative input, the voltage between the source terminal of the switching transistor T and the shunt resistor R 1 is applied to ground.
  • the tapped off between the primary winding Lp and the switching transistor T voltage to ground is divided down via a voltage divider circuit R 2 , R 3 and placed via a diode D to a connected to its other side to ground capacitor C.
  • To the capacitor C is a resistor R 4 in parallel.

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Claims (13)

  1. Circuit pour faire fonctionner une lampe (DBD) à décharge rendue incomplète par voie diélectrique comprenant
    un convertisseur (Lp, Ls) inductif pour injecter de la puissance dans la lampe (DBD),
    un transistor (T) de commutation dans une ligne alimentant le convertisseur (Lp, Ls) en courant (Ip) et
    un circuit (R2, R3, R4, D, C) de protection vis-à-vis de la surtension pour détecter une tension sur le transistor (T) de commutation et empêcher la lampe de fonctionner lors de la détection d'une tension se trouvant au-dessus d'une valeur de seuil prescrite, pour empêcher une destruction du transistor (T) de commutation par de l'énergie injectée à partir du convertisseur (Lp, Ls) si la lampe (DBD) est manquante,
    caractérisé en ce que le circuit pour faire fonctionner la lampe est conçu de façon à ce que, lorsque la lampe recommence à fonctionner, il est appliqué d'abord au moins une impulsion de puissance de test au convertisseur (Lp, Ls) qui est si petite que la destruction du transistor (T) de commutation en raison de cette impulsion de puissance de test est exclue et
    le circuit de protection vis-à-vis de la surtension est sensible à une tension sur le transistor (T) de commutation produite par cette impulsion de puissance de test si une lampe (DBD) n'est pas raccordée et est insensible si la lampe (DBD) est raccordée.
  2. Circuit pour faire fonctionner une lampe suivant la revendication 1, dans lequel le convertisseur (Lp, Ls) fonctionne suivant le principe du convertisseur à oscillateur bloqué.
  3. Circuit suivant la revendication 1 ou 2, comprenant une bascule (M) monostable pour exciter l'entrée de commande du transistor (T) de commutation.
  4. Circuit suivant l'une des revendications précédentes, comprenant un comparateur (K) pour comparer le courant (Ip) passant dans le transistor (T) de commutation à une valeur de référence, dans lequel la valeur de l'impulsion de puissance de test est fixée en réglant la valeur de référence.
  5. Circuit suivant la revendication 4, comprenant un microcontrôleur qui règle la valeur de référence.
  6. Circuit suivant l'une des revendications précédentes, comprenant un microcontrôleur qui cadence le convertisseur (Lp, Ls).
  7. Circuit suivant la revendication 3 et la revendication 6, dans lequel le microcontrôleur cadence le convertisseur (Lp, Ls) par une entrée (e) de validation de la bascule (M) monostable.
  8. Circuit suivant l'une des revendications précédentes, dans lequel le circuit (R2, R3, R4, D, C) de protection vis-à-vis de la tension a un redresseur (R2, R3, D, C) à valeur de crête ayant une caractéristique (C, R4) de passe-bas.
  9. Système d'éclairage constitué d'un circuit pour faire fonctionner une lampe suivant l'une des revendications précédentes et une lampe (DBD) à décharge rendue incomplète par voie diélectrique qui s'y adapte.
  10. Système d'éclairage suivant la revendication 9, dans lequel la lampe (DBD) est une source de rayonnement plate.
  11. Système d'éclairage suivant la revendication 10, dans lequel la source (DBD) de rayonnement plate a une diagonale de surface d'au moins 20 pouces.
  12. Moniteur ayant un système d'éclairage suivant l'une des revendications 9 à 11, pour éclairer le moniteur par l'arrière.
  13. Procédé d'amorçage d'une lampe (DBD) à décharge rendue incomplète par voie diélectrique, comprenant un circuit pour faire fonctionner une lampe suivant l'une des revendications 1 à 8, dans lequel, lorsque la lampe recommence à fonctionner, il est appliqué d'abord au moins une impulsion de puissance de test au convertisseur (Lp, Ls) qui est si petite que la destruction du transistor (T) de commutation en raison de cette impulsion de puissance est exclue et le circuit (R2, R3, R4, D, C) de protection vis-à-vis de la surtension est sensible à une tension sur le transistor (T) de commutation produite par cette impulsion de puissance de test si une lampe (DBD) n'est pas raccordée et est insensible si la lampe (DBD) est raccordée, la lampe (DBD) étant amorcée dans ce cas par le circuit pour faire fonctionner une lampe par injection de puissance d'amorçage.
EP04022966A 2003-10-22 2004-09-27 Circuit pour alimenter une lampe à barrière diélectrique muni d'une protection contre les surtensions Expired - Lifetime EP1526761B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10349548 2003-10-22
DE10349548A DE10349548A1 (de) 2003-10-22 2003-10-22 Betriebsschaltung für dielektrisch behinderte Entladungslampe mit Überspannungsschutzschaltung

Publications (3)

Publication Number Publication Date
EP1526761A2 EP1526761A2 (fr) 2005-04-27
EP1526761A3 EP1526761A3 (fr) 2006-03-29
EP1526761B1 true EP1526761B1 (fr) 2007-04-04

Family

ID=34384444

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04022966A Expired - Lifetime EP1526761B1 (fr) 2003-10-22 2004-09-27 Circuit pour alimenter une lampe à barrière diélectrique muni d'une protection contre les surtensions

Country Status (9)

Country Link
US (1) US7045973B2 (fr)
EP (1) EP1526761B1 (fr)
JP (1) JP4739723B2 (fr)
KR (1) KR100658233B1 (fr)
CN (1) CN100531505C (fr)
AT (1) ATE358963T1 (fr)
CA (1) CA2485618A1 (fr)
DE (2) DE10349548A1 (fr)
TW (1) TWI285520B (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3049782A (en) * 1962-08-21 Ittoesiers
DE102005034505A1 (de) * 2005-07-20 2007-02-01 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Schaltungsanorndung mit transformatorlosem Wandler mit Drossel für den gepulsten Betrieb von dielektrischen Barriere-Entladungslampen
KR100735304B1 (ko) 2005-08-29 2007-07-03 삼성전자주식회사 휴대 단말기의 슬라이딩 장치
DE202006004296U1 (de) * 2006-03-17 2006-06-14 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Ausschaltzeitregelung
US8742677B2 (en) 2010-01-11 2014-06-03 System General Corp. LED drive circuit with a programmable input for LED lighting
US10778082B2 (en) * 2018-06-08 2020-09-15 Stmicroelectronics International N.V. Control circuitry for increasing power output in quasi-resonant converters

Family Cites Families (16)

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Publication number Priority date Publication date Assignee Title
US4350935A (en) * 1980-03-28 1982-09-21 Lutron Electronics Co., Inc. Gas discharge lamp control
JPH02199797A (ja) * 1989-01-26 1990-08-08 Matsushita Electric Works Ltd 放電灯点灯装置
US5982106A (en) * 1992-02-24 1999-11-09 Bobel; Andrzej Self-protected series resonant electronic energy converter
JPH05242982A (ja) * 1992-02-28 1993-09-21 Toshiba Lighting & Technol Corp 放電灯点灯装置及びこれを用いた照明器具
US6274987B1 (en) * 1996-05-08 2001-08-14 Magnetek, Inc. Power sensing lamp protection circuit for ballasts driving gas discharge lamps
DE19715342C1 (de) * 1997-04-12 1998-12-17 Vossloh Schwabe Gmbh Vorschaltgerät für unabhängigen Parallelbetrieb von Niederdruck-Gasentladungslampen
DE19819027A1 (de) * 1998-04-29 1999-11-04 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Schaltungsanordnung zum Betrieb mindestens einer Entladungslampe
DE19839336A1 (de) * 1998-08-28 2000-03-09 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Elektronisches Vorschaltgerät für Entladungslampe mit dielektrisch behinderten Entladungen
JP3820791B2 (ja) * 1999-02-18 2006-09-13 ウシオ電機株式会社 誘電体バリア放電ランプ光源装置
JP2002231478A (ja) * 2000-11-29 2002-08-16 Harison Toshiba Lighting Corp 放電ランプ点灯装置および機器
DE10115279A1 (de) * 2000-03-31 2001-10-18 Toshiba Lighting & Technology Entladungslampenlicht und Leuchteinrichtung hierfür
JP4190734B2 (ja) * 2001-01-15 2008-12-03 ウシオ電機株式会社 誘電体バリア放電ランプ光源装置
JP4734740B2 (ja) * 2001-03-15 2011-07-27 パナソニック電工株式会社 電源装置および放電灯点灯装置
KR20030004636A (ko) * 2001-07-06 2003-01-15 주식회사 피엔케이텍 전자식 안정기
JP2003036987A (ja) * 2001-07-24 2003-02-07 Harison Toshiba Lighting Corp 放電ランプ点灯装置、機器および画像形成装置
US6781326B2 (en) * 2001-12-17 2004-08-24 Q Technology Incorporated Ballast with lamp sensor and method therefor

Also Published As

Publication number Publication date
KR100658233B1 (ko) 2006-12-14
KR20050039606A (ko) 2005-04-29
DE502004003381D1 (de) 2007-05-16
EP1526761A2 (fr) 2005-04-27
JP2005129523A (ja) 2005-05-19
US7045973B2 (en) 2006-05-16
JP4739723B2 (ja) 2011-08-03
ATE358963T1 (de) 2007-04-15
CA2485618A1 (fr) 2005-04-22
EP1526761A3 (fr) 2006-03-29
US20050088116A1 (en) 2005-04-28
CN100531505C (zh) 2009-08-19
TW200527974A (en) 2005-08-16
CN1610476A (zh) 2005-04-27
TWI285520B (en) 2007-08-11
DE10349548A1 (de) 2005-05-25

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