GB2355349B - Apparatus for controlling the brightness of one or more discharge lamps - Google Patents

Apparatus for controlling the brightness of one or more discharge lamps

Info

Publication number
GB2355349B
GB2355349B GB9924485A GB9924485A GB2355349B GB 2355349 B GB2355349 B GB 2355349B GB 9924485 A GB9924485 A GB 9924485A GB 9924485 A GB9924485 A GB 9924485A GB 2355349 B GB2355349 B GB 2355349B
Authority
GB
United Kingdom
Prior art keywords
brightness
controlling
discharge lamps
lamps
discharge
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
GB9924485A
Other versions
GB9924485D0 (en
GB2355349A (en
Inventor
Ian Mcdonald Green
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.)
Central Research Laboratories Ltd
Original Assignee
Central Research Laboratories 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 Central Research Laboratories Ltd filed Critical Central Research Laboratories Ltd
Priority to GB9924485A priority Critical patent/GB2355349B/en
Publication of GB9924485D0 publication Critical patent/GB9924485D0/en
Publication of GB2355349A publication Critical patent/GB2355349A/en
Application granted granted Critical
Publication of GB2355349B publication Critical patent/GB2355349B/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
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • H05B41/39—Controlling the intensity of light continuously
    • H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
    • H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations
GB9924485A 1999-10-15 1999-10-15 Apparatus for controlling the brightness of one or more discharge lamps Expired - Fee Related GB2355349B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9924485A GB2355349B (en) 1999-10-15 1999-10-15 Apparatus for controlling the brightness of one or more discharge lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9924485A GB2355349B (en) 1999-10-15 1999-10-15 Apparatus for controlling the brightness of one or more discharge lamps

Publications (3)

Publication Number Publication Date
GB9924485D0 GB9924485D0 (en) 1999-12-15
GB2355349A GB2355349A (en) 2001-04-18
GB2355349B true GB2355349B (en) 2004-01-21

Family

ID=10862840

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9924485A Expired - Fee Related GB2355349B (en) 1999-10-15 1999-10-15 Apparatus for controlling the brightness of one or more discharge lamps

Country Status (1)

Country Link
GB (1) GB2355349B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030011326A1 (en) * 2001-07-13 2003-01-16 Noh Shi Youl Fluorescent lamp brightness controller

Also Published As

Publication number Publication date
GB9924485D0 (en) 1999-12-15
GB2355349A (en) 2001-04-18

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Legal Events

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

Effective date: 20041015