ATE124202T1 - ELECTRONIC BALLAST. - Google Patents
ELECTRONIC BALLAST.Info
- Publication number
- ATE124202T1 ATE124202T1 AT91250009T AT91250009T ATE124202T1 AT E124202 T1 ATE124202 T1 AT E124202T1 AT 91250009 T AT91250009 T AT 91250009T AT 91250009 T AT91250009 T AT 91250009T AT E124202 T1 ATE124202 T1 AT E124202T1
- Authority
- AT
- Austria
- Prior art keywords
- voltage
- circuit
- control circuit
- supply
- transistor
- Prior art date
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>
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 |
---|---|
ATE124202T1 true ATE124202T1 (en) | 1995-07-15 |
Family
ID=25889237
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT91250009T ATE124202T1 (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)
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 |
ATE553633T1 (en) * | 2007-04-23 | 2012-04-15 | Osram Ag | CIRCUIT ARRANGEMENT FOR GENERATING AN AUXILIARY VOLTAGE AND FOR OPERATING AT LEAST ONE DISCHARGE LAMP |
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 |
JP2014512794A (en) | 2011-04-22 | 2014-05-22 | コーニンクレッカ フィリップス エヌ ヴェ | Power supply circuit for 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)
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 |
-
1990
- 1990-06-13 DE DE4018865A patent/DE4018865A1/en not_active Withdrawn
-
1991
- 1991-01-17 DE DE59105746T patent/DE59105746D1/en not_active Expired - Fee Related
- 1991-01-17 EP EP91250009A patent/EP0439240B1/en not_active Expired - Lifetime
- 1991-01-17 AT AT91250009T patent/ATE124202T1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0439240A3 (en) | 1992-08-19 |
EP0439240A2 (en) | 1991-07-31 |
DE4018865A1 (en) | 1991-12-19 |
EP0439240B1 (en) | 1995-06-21 |
DE59105746D1 (en) | 1995-07-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
REN | Ceased due to non-payment of the annual fee |