EP1133215A3 - Method and ignition circuit for switching a high pressure lamp on and off - Google Patents

Method and ignition circuit for switching a high pressure lamp on and off Download PDF

Info

Publication number
EP1133215A3
EP1133215A3 EP01660040A EP01660040A EP1133215A3 EP 1133215 A3 EP1133215 A3 EP 1133215A3 EP 01660040 A EP01660040 A EP 01660040A EP 01660040 A EP01660040 A EP 01660040A EP 1133215 A3 EP1133215 A3 EP 1133215A3
Authority
EP
European Patent Office
Prior art keywords
lamp
switching
ignition
circuit
high pressure
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.)
Withdrawn
Application number
EP01660040A
Other languages
German (de)
French (fr)
Other versions
EP1133215A2 (en
Inventor
Teijo Viljanen
Jukka Luomala
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.)
Helvar Oy AB
Original Assignee
Helvar Oy AB
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 Helvar Oy AB filed Critical Helvar Oy AB
Publication of EP1133215A2 publication Critical patent/EP1133215A2/en
Publication of EP1133215A3 publication Critical patent/EP1133215A3/en
Withdrawn legal-status Critical Current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
    • H05B41/02—Details
    • H05B41/04—Starting switches
    • H05B41/042—Starting switches using semiconductor devices
    • 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
    • H05B41/288—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 without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps
    • H05B41/292—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2921—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
    • H05B41/2925—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

The invention relates to a method and an ignition circuit for switching a high pressure lamp on and off. A load circuit is capable of being short-circuited by means of a switch (3), which is connected in series with a primary winding (1) of a pulse transformer (1, 2) and whose on-off control is also used for generating ignition voltage pulses through a secondary winding (2) to a lamp (L). Upon a controlled closing of the switch (3) conductively for an extended period of time, a current ballast (Lk) will be subjected to a through-going short-circuit current for the load circuit and the lamp voltage falls to such a low level that the lamp is turned off. This lamp turn-off function can be used both for switching off a normally burning lamp and for terminating an abnormal status of gas discharge of a lamp not ignited between ignition attempts, in order to give the lamp a chance to cool down prior to another ignition attempt.
EP01660040A 2000-03-06 2001-03-02 Method and ignition circuit for switching a high pressure lamp on and off Withdrawn EP1133215A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20000505 2000-03-06
FI20000505A FI107578B (en) 2000-03-06 2000-03-06 Procedure and ignition circuit for ignition and extinguishing of high pressure lamp

Publications (2)

Publication Number Publication Date
EP1133215A2 EP1133215A2 (en) 2001-09-12
EP1133215A3 true EP1133215A3 (en) 2004-01-07

Family

ID=8557847

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01660040A Withdrawn EP1133215A3 (en) 2000-03-06 2001-03-02 Method and ignition circuit for switching a high pressure lamp on and off

Country Status (2)

Country Link
EP (1) EP1133215A3 (en)
FI (1) FI107578B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0222809D0 (en) * 2002-10-02 2002-11-06 Power Electronics Ltd Discharge lighting bulbs control system
EP1686837A1 (en) * 2005-01-28 2006-08-02 TTE Germany GmbH Ignition circuit and ballast for a high intensity discharge lamp
DE102008004787A1 (en) * 2008-01-17 2009-07-23 Bag Electronics Gmbh Igniter with two input terminals

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997008921A1 (en) * 1995-08-28 1997-03-06 Tridonic Bauelemente Gmbh Striking circuit for a high-pressure gas discharge lamp
US5962988A (en) * 1995-11-02 1999-10-05 Hubbell Incorporated Multi-voltage ballast and dimming circuits for a lamp drive voltage transformation and ballasting system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997008921A1 (en) * 1995-08-28 1997-03-06 Tridonic Bauelemente Gmbh Striking circuit for a high-pressure gas discharge lamp
US5962988A (en) * 1995-11-02 1999-10-05 Hubbell Incorporated Multi-voltage ballast and dimming circuits for a lamp drive voltage transformation and ballasting system

Also Published As

Publication number Publication date
FI107578B (en) 2001-08-31
EP1133215A2 (en) 2001-09-12
FI20000505A0 (en) 2000-03-06

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