ZA939579B - Ballast device for at least one pair of gas discharge lamps operated in parallel. - Google Patents

Ballast device for at least one pair of gas discharge lamps operated in parallel.

Info

Publication number
ZA939579B
ZA939579B ZA939579A ZA939579A ZA939579B ZA 939579 B ZA939579 B ZA 939579B ZA 939579 A ZA939579 A ZA 939579A ZA 939579 A ZA939579 A ZA 939579A ZA 939579 B ZA939579 B ZA 939579B
Authority
ZA
South Africa
Prior art keywords
pair
parallel
gas discharge
discharge lamps
ballast device
Prior art date
Application number
ZA939579A
Inventor
Andreas Scholl
Original Assignee
Tridonic Bauelemente
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6476455&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ZA939579(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Tridonic Bauelemente filed Critical Tridonic Bauelemente
Publication of ZA939579B publication Critical patent/ZA939579B/en

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
    • H05B41/2827—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 specially adapted components in the load circuit, e.g. feed-back transformers, piezoelectric transformers; using specially adapted load circuit configurations
    • 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
    • H05B41/382—Controlling the intensity of light during the transitional start-up phase

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)

Abstract

A ballast for at least one pair of gas discharge lamps in parallel has a rectifier (G) to be connected to the a.c. mains and a converter (WR) connected downstream thereof. A series resonant circuit (LR, CR) is connected to the output of the converter. To the pair of lamps (L1, L2) is allocated a balancing transformer (TS1) having two counteraction windings (WS1, WS2). The two windings are interconnected at one end. The connection point is connected to that of the choke (LR) and of the resonant capacitor (CR) of the series resonant circuit. The other end of the two windings are connected to one electrode of the two lamps (L1, L2).
ZA939579A 1992-12-23 1993-12-21 Ballast device for at least one pair of gas discharge lamps operated in parallel. ZA939579B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4243955A DE4243955B4 (en) 1992-12-23 1992-12-23 Ballast for at least one parallel-operated pair of gas discharge lamps

Publications (1)

Publication Number Publication Date
ZA939579B true ZA939579B (en) 1994-08-11

Family

ID=6476455

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA939579A ZA939579B (en) 1992-12-23 1993-12-21 Ballast device for at least one pair of gas discharge lamps operated in parallel.

Country Status (9)

Country Link
EP (1) EP0676121B1 (en)
AT (1) ATE148297T1 (en)
AU (1) AU5371594A (en)
DE (2) DE4243955B4 (en)
ES (1) ES2097550T3 (en)
FI (1) FI111791B (en)
NO (1) NO308690B1 (en)
WO (1) WO1994015444A1 (en)
ZA (1) ZA939579B (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0766500B1 (en) * 1995-09-27 2001-12-12 Koninklijke Philips Electronics N.V. Ballast with balancer transformer for fluorescent lamps
CN1085962C (en) * 1996-06-25 2002-06-05 W·L·戈尔有限公司 Flexible water and oil resistant composites
DE19625389A1 (en) * 1996-06-25 1998-01-02 Gore W L & Ass Gmbh Flexible composite
DE19715342C1 (en) * 1997-04-12 1998-12-17 Vossloh Schwabe Gmbh Ballast for independent parallel operation of low pressure gas discharge lamps
DE19715341C1 (en) * 1997-04-12 1998-10-15 Vossloh Schwabe Gmbh Electronic ballast with automatic restart
US6069455A (en) * 1998-04-15 2000-05-30 Electro-Mag International, Inc. Ballast having a selectively resonant circuit
US6310444B1 (en) * 2000-08-10 2001-10-30 Philips Electronics North America Corporation Multiple lamp LCD backlight driver with coupled magnetic components
DE10049842A1 (en) 2000-10-09 2002-04-11 Tridonic Bauelemente Operating circuit for gas discharge lamps, has additional DC supply line for each gas discharge lamp for preventing unwanted lamp extinction
DE10134966A1 (en) 2001-07-23 2003-02-06 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Ballast for operating at least one low-pressure discharge lamp
US7309964B2 (en) 2004-10-01 2007-12-18 Au Optronics Corporation Floating drive circuit for cold cathode fluorescent lamp
DE102007054805A1 (en) * 2007-11-16 2009-05-20 Tridonicatco Schweiz Ag Circuit arrangement for operating gas discharge lamps, for example HID lamps
WO2012012195A2 (en) 2010-07-19 2012-01-26 Microsemi Corporation Led string driver arrangement with non-dissipative current balancer
DE102010063867A1 (en) * 2010-12-22 2012-06-28 Tridonic Gmbh & Co Kg Ignition control and ignition detection of gas discharge lamps
CN103477712B (en) 2011-05-03 2015-04-08 美高森美公司 High efficiency LED driving method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3412942C2 (en) * 1984-04-06 1986-02-20 Trilux-Lenze Gmbh + Co Kg, 5760 Arnsberg Electronic ballast for several fluorescent lamps
DK339586D0 (en) * 1986-07-16 1986-07-16 Silver Gruppen Prod As ELECTRONIC BALLAST
US4902942A (en) * 1988-06-02 1990-02-20 General Electric Company Controlled leakage transformer for fluorescent lamp ballast including integral ballasting inductor
JPH03116689A (en) * 1989-09-29 1991-05-17 Toshiba Lighting & Technol Corp Discharge lamp lighting device
US5081401A (en) * 1990-09-10 1992-01-14 Motorola, Inc. Driver circuit for a plurality of gas discharge lamps
DE4039161C2 (en) * 1990-12-07 2001-05-31 Zumtobel Ag Dornbirn System for controlling the brightness and operating behavior of fluorescent lamps

Also Published As

Publication number Publication date
WO1994015444A1 (en) 1994-07-07
FI952655A0 (en) 1995-05-31
NO952517D0 (en) 1995-06-22
ES2097550T3 (en) 1997-04-01
DE4243955B4 (en) 2010-11-18
NO952517L (en) 1995-06-22
EP0676121A1 (en) 1995-10-11
EP0676121B1 (en) 1997-01-22
ATE148297T1 (en) 1997-02-15
FI111791B (en) 2003-09-15
NO308690B1 (en) 2000-10-09
FI952655A (en) 1995-05-31
AU5371594A (en) 1994-07-19
DE59305294D1 (en) 1997-03-06
DE4243955A1 (en) 1994-06-30

Similar Documents

Publication Publication Date Title
ZA939579B (en) Ballast device for at least one pair of gas discharge lamps operated in parallel.
US4692667A (en) Parallel-resonant bridge-inverter fluorescent lamp ballast
SE8008773L (en) RECTIFIER DEVICE WITH FILTERED OUTPUT VOLTAGE
GR3027638T3 (en) A circuit for driving gas discharge lamps having protection against diode operation of the lamps.
JPS5553710A (en) Power unit
ES2097913T5 (en) CIRCUIT FOR EXCITING GASEOUS DISCHARGE LAMPS.
EP0417315A4 (en) Device for lighting a discharge lamp
JPS5649682A (en) Power source device
EP0697803A3 (en) Circuit for operating discharge lamps
DE3567787D1 (en) Circuit device for the ac operation of high-pressure discharge lamps
AU4453097A (en) Electronic ballast for gas discharge lamps
FR2398427A1 (en) Supply circuit for fluorescent security light - has transformer and variable frequency DC=AC converter with adjustable saturation characteristics
RU94014746A (en) POWER SUPPLY FOR ELECTRIC ARC WELDING
UA40354A (en) ARC WELDING DEVICE
UA40350A (en) ARC WELDING DEVICE
CA2211467A1 (en) Inverter for the power supply of discharge lamps with means for improving the power factor
HUP0002601A2 (en) Plasma cutting device that can be enabled to perform multiple tasks
RU95114808A (en) POWER SUPPLY FOR ARC WELDING
UA36846A (en) Apparatus for arc welding
UA22187A (en) Rectifier for arc welding
FR2374814A1 (en) Sinusoidal wave oscillator ballast circuit - has tuned oscillator coupled to DC rectifier coupled by power factor correction circuit to AC potential source
EP1067666A3 (en) Circuit arrangement
RU93016134A (en) POWER SUPPLY FOR ARC WELDING
UA38846A (en) device for arc welding
RU93051775A (en) POWER PLASMA FOR PLASMA ARC TREATMENT