EP0808084A3 - Safety shutdown in case of asymmetrical power consumption - Google Patents

Safety shutdown in case of asymmetrical power consumption Download PDF

Info

Publication number
EP0808084A3
EP0808084A3 EP97107206A EP97107206A EP0808084A3 EP 0808084 A3 EP0808084 A3 EP 0808084A3 EP 97107206 A EP97107206 A EP 97107206A EP 97107206 A EP97107206 A EP 97107206A EP 0808084 A3 EP0808084 A3 EP 0808084A3
Authority
EP
European Patent Office
Prior art keywords
safety shutdown
case
power consumption
asymmetrical power
lamp
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.)
Granted
Application number
EP97107206A
Other languages
German (de)
French (fr)
Other versions
EP0808084A2 (en
EP0808084B1 (en
Inventor
Felix Dr. Franck
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 EP0808084A2 publication Critical patent/EP0808084A2/en
Publication of EP0808084A3 publication Critical patent/EP0808084A3/en
Application granted granted Critical
Publication of EP0808084B1 publication Critical patent/EP0808084B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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

Landscapes

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

Abstract

Vorgeschlagen wird eine Schaltung zum Wechselspannungsbetrieb einer Entladungslampe über einen mit der Lampe zur Gleichstromtrennung in Reihe geschalteten Kopplungskondensator (C3) mit einer Sicherheitsabschalteinrichtung, die dadurch gekennzeichnet ist, daß die Sicherheitsabschalteinrichtung auf eine Gleichspannung (UC3) an dem Kopplungskondensator (C3) durch eine Gleichstromkomponente durch die Lampe anspricht.

Figure 00000001
A circuit is proposed for AC operation of a discharge lamp via a coupling capacitor (C3) connected in series with the lamp for direct current separation with a safety shutdown device, which is characterized in that the safety shutdown device switches to a direct voltage (UC3) on the coupling capacitor (C3) by a direct current component the lamp responds.
Figure 00000001
EP97107206A 1996-05-15 1997-04-30 Safety shutdown in case of asymmetrical power consumption Expired - Lifetime EP0808084B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19619580A DE19619580A1 (en) 1996-05-15 1996-05-15 Safety shutdown with asymmetrical lamp power
DE19619580 1996-05-15

Publications (3)

Publication Number Publication Date
EP0808084A2 EP0808084A2 (en) 1997-11-19
EP0808084A3 true EP0808084A3 (en) 1998-04-22
EP0808084B1 EP0808084B1 (en) 2001-06-27

Family

ID=7794387

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97107206A Expired - Lifetime EP0808084B1 (en) 1996-05-15 1997-04-30 Safety shutdown in case of asymmetrical power consumption

Country Status (4)

Country Link
US (1) US5939832A (en)
EP (1) EP0808084B1 (en)
CA (1) CA2205323C (en)
DE (2) DE19619580A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19941437A1 (en) 1999-08-30 2001-03-01 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Circuit arrangement for operating at least one discharge lamp
DE10046443A1 (en) * 2000-09-18 2002-03-28 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Electronic circuit for the detection of the change in gas discharge lamps
EP1444871A1 (en) * 2001-11-07 2004-08-11 Koninklijke Philips Electronics N.V. Ballast circuit arrangement for operating a discharge lamp with end of lamp life detection
DE10163033A1 (en) * 2001-12-20 2003-07-03 Tridonicatco Gmbh & Co Kg Electronic ballast with monitoring circuit for detecting the rectification effect occurring in a gas discharge lamp
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
CN101060737A (en) * 2006-04-19 2007-10-24 皇家飞利浦电子股份有限公司 A circuit of displaying the functional status of detecting lamp and ballast
US8482213B1 (en) 2009-06-29 2013-07-09 Panasonic Corporation Electronic ballast with pulse detection circuit for lamp end of life and output short protection
US8947020B1 (en) 2011-11-17 2015-02-03 Universal Lighting Technologies, Inc. End of life control for parallel lamp ballast
CN202455166U (en) * 2011-12-31 2012-09-26 东莞市洁德电子科技有限公司 Inductor, inductive charger and inductive emergency lamp

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0056481A2 (en) * 1980-12-26 1982-07-28 Toshiba Electric Equipment Corporation Transistor inverter device
EP0411618A2 (en) * 1989-08-04 1991-02-06 Zumtobel Aktiengesellschaft Electronic ballast for gas discharge lamps
US5023516A (en) * 1988-05-10 1991-06-11 Matsushita Electric Industrial Co., Ltd. Discharge lamp operation apparatus
DE4100349A1 (en) * 1990-01-31 1991-08-01 Siemens Ag ELECTRONIC BALLAST
EP0681414A2 (en) * 1994-05-03 1995-11-08 Osram Sylvania Inc. Protection circuit for arc discharge lamps
EP0696157A1 (en) * 1994-08-02 1996-02-07 Osram Sylvania Inc. Ballast containing protection circuit for detecting rectification of arc discharge lamp

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5387846A (en) * 1991-11-27 1995-02-07 Selwyn Yuen Combination ballast for driving a fluorescent lamp or tube and ballast protection circuit
US5528147A (en) * 1994-06-30 1996-06-18 Motorola Lighting, Inc. Apparatus for detecting gas discharge lamp faults

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0056481A2 (en) * 1980-12-26 1982-07-28 Toshiba Electric Equipment Corporation Transistor inverter device
US5023516A (en) * 1988-05-10 1991-06-11 Matsushita Electric Industrial Co., Ltd. Discharge lamp operation apparatus
EP0411618A2 (en) * 1989-08-04 1991-02-06 Zumtobel Aktiengesellschaft Electronic ballast for gas discharge lamps
DE4100349A1 (en) * 1990-01-31 1991-08-01 Siemens Ag ELECTRONIC BALLAST
EP0681414A2 (en) * 1994-05-03 1995-11-08 Osram Sylvania Inc. Protection circuit for arc discharge lamps
EP0696157A1 (en) * 1994-08-02 1996-02-07 Osram Sylvania Inc. Ballast containing protection circuit for detecting rectification of arc discharge lamp

Also Published As

Publication number Publication date
CA2205323C (en) 2005-03-22
EP0808084A2 (en) 1997-11-19
DE19619580A1 (en) 1997-11-20
CA2205323A1 (en) 1997-11-15
DE59703889D1 (en) 2001-08-02
US5939832A (en) 1999-08-17
EP0808084B1 (en) 2001-06-27

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