WO2001097574A3 - Control circuits for fluorescent tubes - Google Patents

Control circuits for fluorescent tubes Download PDF

Info

Publication number
WO2001097574A3
WO2001097574A3 PCT/EP2001/006678 EP0106678W WO0197574A3 WO 2001097574 A3 WO2001097574 A3 WO 2001097574A3 EP 0106678 W EP0106678 W EP 0106678W WO 0197574 A3 WO0197574 A3 WO 0197574A3
Authority
WO
WIPO (PCT)
Prior art keywords
voltage
circuit
oscillator
lamp
power stage
Prior art date
Application number
PCT/EP2001/006678
Other languages
French (fr)
Other versions
WO2001097574A9 (en
WO2001097574A2 (en
Inventor
Vitaliano Masciari
Original Assignee
Brenex Electrics Pty Ltd
Vitaliano Masciari
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 Brenex Electrics Pty Ltd, Vitaliano Masciari filed Critical Brenex Electrics Pty Ltd
Priority to AU76364/01A priority Critical patent/AU7636401A/en
Publication of WO2001097574A2 publication Critical patent/WO2001097574A2/en
Publication of WO2001097574A3 publication Critical patent/WO2001097574A3/en
Publication of WO2001097574A9 publication Critical patent/WO2001097574A9/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
    • H05B41/285—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2851—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
    • H05B41/2855—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal lamp operating conditions

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

An electronic circuit to control a fluorescent lamp (90) is described. An oscillator (140) produces a high-frequency square-wave signal which is applied to a final power stage (160) by a driver circuit (150). The final power stage (160) includes a switching circuit and a resonant circuit that apply a voltage, at the oscillator frequency, to the lamp (90), the voltage being sufficiently high to ignite the lamp (90). The circuit also comprises a power buffer (110) which supplies a rectified voltage to the final power stage (160), and a low-voltage buffer (120) which supplies a second rectified voltage to the oscillator (140). A protection circuit (170) cuts the voltage supplied to the oscillator (140) when the lamp (90) no longer ignites.
PCT/EP2001/006678 2000-06-14 2001-06-13 Control circuits for fluorescent tubes WO2001097574A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU76364/01A AU7636401A (en) 2000-06-14 2001-06-13 Control circuits for fluorescent tubes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU40833/00A AU732605B1 (en) 2000-06-14 2000-06-14 Control circuits for fluorescent tubes
AU40833/00 2000-06-14

Publications (3)

Publication Number Publication Date
WO2001097574A2 WO2001097574A2 (en) 2001-12-20
WO2001097574A3 true WO2001097574A3 (en) 2002-06-06
WO2001097574A9 WO2001097574A9 (en) 2002-09-19

Family

ID=3728118

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/006678 WO2001097574A2 (en) 2000-06-14 2001-06-13 Control circuits for fluorescent tubes

Country Status (2)

Country Link
AU (1) AU732605B1 (en)
WO (1) WO2001097574A2 (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0111929A1 (en) * 1982-12-23 1984-06-27 Siemens Aktiengesellschaft Arrangement for switching off an inverter
EP0127101A1 (en) * 1983-05-27 1984-12-05 Siemens Aktiengesellschaft Inverter for feeding discharge lamps
EP0351012A2 (en) * 1988-07-15 1990-01-17 Koninklijke Philips Electronics N.V. Fluorescent lamp controllers
EP0466245A2 (en) * 1990-07-09 1992-01-15 Koninklijke Philips Electronics N.V. Circuit arrangement
EP0677981A1 (en) * 1994-04-15 1995-10-18 Knobel Ag Lichttechnische Komponenten Ballast for discharge lamps with lamp change detecting means
US5770925A (en) * 1997-05-30 1998-06-23 Motorola Inc. Electronic ballast with inverter protection and relamping circuits
EP0889675A1 (en) * 1997-07-02 1999-01-07 MAGNETEK S.p.A. Electronic ballast with lamp tyre recognition
US5969483A (en) * 1998-03-30 1999-10-19 Motorola Inverter control method for electronic ballasts

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2103627A1 (en) * 1993-08-09 1995-02-10 Chen Wei-Qun Variable frequency electronic ballast of high power factor and stabilized output voltage
US5747942A (en) * 1996-07-10 1998-05-05 Enersol Systems, Inc. Inverter for an electronic ballast having independent start-up and operational output voltages
DE19853657A1 (en) * 1998-11-20 2000-05-31 Vogt Electronic Ag Control gear for fluorescent cold cathode lamp with lamp current controlled by resonant circuit

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0111929A1 (en) * 1982-12-23 1984-06-27 Siemens Aktiengesellschaft Arrangement for switching off an inverter
EP0127101A1 (en) * 1983-05-27 1984-12-05 Siemens Aktiengesellschaft Inverter for feeding discharge lamps
EP0351012A2 (en) * 1988-07-15 1990-01-17 Koninklijke Philips Electronics N.V. Fluorescent lamp controllers
EP0466245A2 (en) * 1990-07-09 1992-01-15 Koninklijke Philips Electronics N.V. Circuit arrangement
EP0677981A1 (en) * 1994-04-15 1995-10-18 Knobel Ag Lichttechnische Komponenten Ballast for discharge lamps with lamp change detecting means
US5770925A (en) * 1997-05-30 1998-06-23 Motorola Inc. Electronic ballast with inverter protection and relamping circuits
EP0889675A1 (en) * 1997-07-02 1999-01-07 MAGNETEK S.p.A. Electronic ballast with lamp tyre recognition
US5969483A (en) * 1998-03-30 1999-10-19 Motorola Inverter control method for electronic ballasts

Also Published As

Publication number Publication date
WO2001097574A9 (en) 2002-09-19
AU732605B1 (en) 2001-04-26
WO2001097574A2 (en) 2001-12-20

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