GB2344708B - Improvements to electrical lamps - Google Patents

Improvements to electrical lamps

Info

Publication number
GB2344708B
GB2344708B GB9927342A GB9927342A GB2344708B GB 2344708 B GB2344708 B GB 2344708B GB 9927342 A GB9927342 A GB 9927342A GB 9927342 A GB9927342 A GB 9927342A GB 2344708 B GB2344708 B GB 2344708B
Authority
GB
United Kingdom
Prior art keywords
electrical lamps
lamps
electrical
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.)
Expired - Fee Related
Application number
GB9927342A
Other versions
GB9927342D0 (en
GB2344708A (en
Inventor
Lawrence Samuel Tyson
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.)
Microlights Ltd
Original Assignee
Microlights Ltd
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 Microlights Ltd filed Critical Microlights Ltd
Publication of GB9927342D0 publication Critical patent/GB9927342D0/en
Publication of GB2344708A publication Critical patent/GB2344708A/en
Application granted granted Critical
Publication of GB2344708B publication Critical patent/GB2344708B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H05B41/288—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
    • 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
    • H05B41/2881—Load circuits; Control thereof
    • H05B41/2882—Load circuits; Control thereof the control resulting from an action on the static converter
    • H05B41/2883—Load circuits; Control thereof the control resulting from an action on the static converter the controlled element being a DC/AC converter in the final stage, e.g. by harmonic mode starting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
GB9927342A 1998-11-18 1999-11-18 Improvements to electrical lamps Expired - Fee Related GB2344708B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB9825299.2A GB9825299D0 (en) 1998-11-18 1998-11-18 Improvements to electrical lamps

Publications (3)

Publication Number Publication Date
GB9927342D0 GB9927342D0 (en) 2000-01-12
GB2344708A GB2344708A (en) 2000-06-14
GB2344708B true GB2344708B (en) 2001-01-17

Family

ID=10842666

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB9825299.2A Ceased GB9825299D0 (en) 1998-11-18 1998-11-18 Improvements to electrical lamps
GB9927342A Expired - Fee Related GB2344708B (en) 1998-11-18 1999-11-18 Improvements to electrical lamps

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB9825299.2A Ceased GB9825299D0 (en) 1998-11-18 1998-11-18 Improvements to electrical lamps

Country Status (3)

Country Link
AU (1) AU1394600A (en)
GB (2) GB9825299D0 (en)
WO (1) WO2000030414A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1261250A (en) * 1999-01-15 2000-07-26 孔宪功 Gas discharge lamp
DE102009048562B4 (en) * 2009-10-07 2012-08-30 Heraeus Noblelight Gmbh Method and device for operating an electrodeless discharge lamp with a sweep generator
US8384297B2 (en) 2010-08-18 2013-02-26 Lutron Electronics Co., Inc. Method of controlling an operating frequency of an electronic dimming ballast

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0240736A1 (en) * 1986-04-03 1987-10-14 Vossloh Schwabe GmbH Ballast device or transformer, especially for discharge lamps
GB2226463A (en) * 1988-12-21 1990-06-27 Sirous Yazdanian Control of fluorescent lights
US5309062A (en) * 1992-05-20 1994-05-03 Progressive Technology In Lighting, Inc. Three-way compact fluorescent lamp system utilizing an electronic ballast having a variable frequency oscillator

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7610451A (en) * 1976-09-21 1978-03-23 Philips Nv DISCHARGE LAMP.
JP2814833B2 (en) * 1992-04-10 1998-10-27 岩崎電気株式会社 High pressure steam discharge lamp with built-in starter
AU5920196A (en) * 1994-08-30 1997-12-05 Sls Industries, Inc. A power processor for metal halide lamps
DE19505476A1 (en) * 1995-02-17 1996-08-22 Walter Holzer Compact fluorescent lamp with adaptor
DE19530485A1 (en) * 1995-08-18 1997-02-20 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Method and circuit arrangement for operating an electric lamp
JP3280567B2 (en) * 1996-04-04 2002-05-13 株式会社小糸製作所 Discharge lamp lighting circuit
WO1998025441A2 (en) * 1996-12-02 1998-06-11 Koninklijke Philips Electronics N.V. Circuit arrangement

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0240736A1 (en) * 1986-04-03 1987-10-14 Vossloh Schwabe GmbH Ballast device or transformer, especially for discharge lamps
GB2226463A (en) * 1988-12-21 1990-06-27 Sirous Yazdanian Control of fluorescent lights
US5309062A (en) * 1992-05-20 1994-05-03 Progressive Technology In Lighting, Inc. Three-way compact fluorescent lamp system utilizing an electronic ballast having a variable frequency oscillator

Also Published As

Publication number Publication date
GB9927342D0 (en) 2000-01-12
GB9825299D0 (en) 1999-01-13
AU1394600A (en) 2000-06-05
GB2344708A (en) 2000-06-14
WO2000030414A1 (en) 2000-05-25

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20101118