GB2029134B - Variable frequency dimming for high intensity gaseous discharge lamps - Google Patents

Variable frequency dimming for high intensity gaseous discharge lamps

Info

Publication number
GB2029134B
GB2029134B GB7923899A GB7923899A GB2029134B GB 2029134 B GB2029134 B GB 2029134B GB 7923899 A GB7923899 A GB 7923899A GB 7923899 A GB7923899 A GB 7923899A GB 2029134 B GB2029134 B GB 2029134B
Authority
GB
United Kingdom
Prior art keywords
high intensity
variable frequency
discharge lamps
gaseous discharge
frequency dimming
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
Application number
GB7923899A
Other versions
GB2029134A (en
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.)
Esquire Inc
Original Assignee
Esquire Inc
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 Esquire Inc filed Critical Esquire Inc
Publication of GB2029134A publication Critical patent/GB2029134A/en
Application granted granted Critical
Publication of GB2029134B publication Critical patent/GB2029134B/en
Expired 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
GB7923899A 1978-08-25 1979-07-09 Variable frequency dimming for high intensity gaseous discharge lamps Expired GB2029134B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US93688278A 1978-08-25 1978-08-25

Publications (2)

Publication Number Publication Date
GB2029134A GB2029134A (en) 1980-03-12
GB2029134B true GB2029134B (en) 1982-11-03

Family

ID=25469192

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7923899A Expired GB2029134B (en) 1978-08-25 1979-07-09 Variable frequency dimming for high intensity gaseous discharge lamps

Country Status (9)

Country Link
AU (1) AU526724B2 (en)
BE (1) BE878227A (en)
CA (1) CA1130852A (en)
DE (1) DE2931794A1 (en)
ES (1) ES483620A1 (en)
FR (1) FR2434547A1 (en)
GB (1) GB2029134B (en)
IT (1) IT1117392B (en)
MX (1) MX147513A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA83299B (en) * 1982-01-15 1983-10-26 Minitronics Pty Ltd Electronic high frequency controlled device for operating gas discharge lamps
US4843627A (en) * 1986-08-05 1989-06-27 Stebbins Russell T Circuit and method for providing a light energy response to an event in real time
DE19708187A1 (en) * 1997-02-28 1998-09-03 Uwe Unterwasser Electric Gmbh Lamp circuit control
GB2477507A (en) * 2010-02-03 2011-08-10 Emil Blumer Control of luminance of gas discharge lamp using variable frequency drive

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB720279A (en) * 1951-08-09 1954-12-15 Gen Electric Co Ltd Improvements in or relating to circuits for operating electric discharge lamps
GB955656A (en) * 1959-05-19 1964-04-15 A E I Lamp And Lighting Compan Operation of electric discharge lamps
US3836815A (en) * 1972-05-24 1974-09-17 Gen Electric Emergency instant-start lighting system for arc discharge devices

Also Published As

Publication number Publication date
MX147513A (en) 1982-12-10
IT1117392B (en) 1986-02-17
AU5008979A (en) 1980-02-28
ES483620A1 (en) 1980-04-01
CA1130852A (en) 1982-08-31
AU526724B2 (en) 1983-01-27
GB2029134A (en) 1980-03-12
IT7949748A0 (en) 1979-07-13
DE2931794A1 (en) 1980-03-06
BE878227A (en) 1979-12-03
FR2434547A1 (en) 1980-03-21

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Legal Events

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