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FI96657B - Electronic ballast for gas discharge pipe - Google Patents

Electronic ballast for gas discharge pipe

Info

Publication number
FI96657B
FI96657B FI903809A FI903809A FI96657B FI 96657 B FI96657 B FI 96657B FI 903809 A FI903809 A FI 903809A FI 903809 A FI903809 A FI 903809A FI 96657 B FI96657 B FI 96657B
Authority
FI
Finland
Prior art keywords
signal
switch
circuit part
voltage
gas discharge
Prior art date
Application number
FI903809A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI96657C (en
FI903809A0 (en
Inventor
Wolfgang Pabst
Original Assignee
Zumtobel 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 Zumtobel Ag filed Critical Zumtobel Ag
Publication of FI903809A0 publication Critical patent/FI903809A0/en
Application granted granted Critical
Publication of FI96657B publication Critical patent/FI96657B/en
Publication of FI96657C publication Critical patent/FI96657C/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
    • H05B41/295—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
    • H05B41/298—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2981—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
    • H05B41/2985—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal lamp operating conditions
    • 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
    • H05B41/298—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2981—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
    • H05B41/2983—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal power supply conditions

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
  • Discharge Lamp (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Pipeline Systems (AREA)
  • Connecting Device With Holders (AREA)
  • Electron Sources, Ion Sources (AREA)
  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
  • Air Bags (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Inverter Devices (AREA)

Abstract

An electronic ballast (1) for gas discharge lamps (2), having an input circuit part (10, 11) for producing an intermediate-circuit DC voltage (Uz) from a supply voltage (L1,N), having an oscillator circuit part (4,8,S1,S2), supplied from the intermediate circuit DC voltage (Uz) for generating an alternating signal (uw) which can be supplied to the gas discharge lamp (2), having a bistable switch-off latching circuit part (3) which supplies a switch-off signal (us) in its first and second stable state to the oscillator circuit part (4,8,S1,S2), and hence releases the oscillator circuit part (4,8,S1,S2) or switches it off, a first signal (u1), derived from the alternating signal (uw), driving the switch-off latching circuit part (3) from its first into its second stable state in the event of a predetermined value being exceeded, and generating the switch-off signal (us), is to be designed such that its operating reliability is further improved. This is achieved in that a further signal (u2), derived from the intermediate circuit DC voltage (Uz), produces the switch-off signal (us) when the intermediate circuit DC voltage (Uz) exceeds a predetermined maximum value. <IMAGE>
FI903809A 1989-08-04 1990-07-31 Electronic ballast for gas discharge pipe FI96657C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3925899A DE3925899A1 (en) 1989-08-04 1989-08-04 ELECTRONIC CONTROLLER FOR GAS DISCHARGE LAMPS
DE3925899 1989-08-04

Publications (3)

Publication Number Publication Date
FI903809A0 FI903809A0 (en) 1990-07-31
FI96657B true FI96657B (en) 1996-04-15
FI96657C FI96657C (en) 1996-07-25

Family

ID=6386555

Family Applications (1)

Application Number Title Priority Date Filing Date
FI903809A FI96657C (en) 1989-08-04 1990-07-31 Electronic ballast for gas discharge pipe

Country Status (7)

Country Link
EP (1) EP0411618B1 (en)
AT (1) ATE102429T1 (en)
DE (2) DE3925899A1 (en)
DK (1) DK0411618T3 (en)
ES (1) ES2050897T3 (en)
FI (1) FI96657C (en)
NO (1) NO177210C (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4120649A1 (en) * 1991-06-22 1992-12-24 Vossloh Schwabe Gmbh OVERVOLTAGE PROTECTED BALLAST
DE19619580A1 (en) * 1996-05-15 1997-11-20 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Safety shutdown with asymmetrical lamp power
DE10163034B4 (en) * 2001-12-20 2014-08-28 Tridonic Gmbh & Co Kg Electronic ballast with overvoltage monitoring
DE102004002027B4 (en) 2004-01-14 2020-03-26 Tridonic Gmbh & Co Kg Central PFC with DC output circuit control
DE102005028419A1 (en) 2005-06-20 2006-12-28 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Electronic ballast for e.g. coldstarting discharge lamp, has varistor, shutdown device, diode, resistors and integration capacitor connected in parallel for limiting voltage across intermediate circuit capacitor

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2117192B (en) * 1982-02-26 1986-01-02 Transtar Limited Lamp control circuit
US4538095A (en) * 1983-06-03 1985-08-27 Nilssen Ole K Series-resonant electronic ballast circuit
AT390156B (en) * 1985-05-14 1990-03-26 Zumtobel Ag PROTECTIVE CIRCUIT FOR A INVERTER CIRCUIT
FR2625642A1 (en) * 1987-12-31 1989-07-07 Courier De Mere Henri Electronic ballast with high power factor
US5068570A (en) * 1989-01-26 1991-11-26 Koito Manufacturing Co., Ltd. Lamp lighting circuit with an overload protection capability

Also Published As

Publication number Publication date
EP0411618B1 (en) 1994-03-02
FI96657C (en) 1996-07-25
DE3925899A1 (en) 1991-02-07
ATE102429T1 (en) 1994-03-15
NO903421D0 (en) 1990-08-03
EP0411618A3 (en) 1992-07-22
EP0411618A2 (en) 1991-02-06
DK0411618T3 (en) 1994-03-28
FI903809A0 (en) 1990-07-31
NO177210C (en) 1995-08-02
ES2050897T3 (en) 1994-06-01
DE59004747D1 (en) 1994-04-07
NO903421L (en) 1991-02-05
NO177210B (en) 1995-04-24

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Legal Events

Date Code Title Description
BB Publication of examined application
FG Patent granted

Owner name: ZUMTOBEL AG