EP0020493A4 - Fluorescent lamp lighting system. - Google Patents

Fluorescent lamp lighting system.

Info

Publication number
EP0020493A4
EP0020493A4 EP19790901332 EP79901332A EP0020493A4 EP 0020493 A4 EP0020493 A4 EP 0020493A4 EP 19790901332 EP19790901332 EP 19790901332 EP 79901332 A EP79901332 A EP 79901332A EP 0020493 A4 EP0020493 A4 EP 0020493A4
Authority
EP
European Patent Office
Prior art keywords
fluorescent lamp
lighting system
lamp lighting
fluorescent
lighting
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
EP19790901332
Other languages
German (de)
French (fr)
Other versions
EP0020493B1 (en
EP0020493A1 (en
Inventor
Don F Widmayer
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.)
Controlled Environmental Systems Corp
Controlled Environment Systems Inc
Original Assignee
Controlled Environmental Systems Corp
Controlled Environment Systems 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 Controlled Environmental Systems Corp, Controlled Environment Systems Inc filed Critical Controlled Environmental Systems Corp
Publication of EP0020493A1 publication Critical patent/EP0020493A1/en
Publication of EP0020493A4 publication Critical patent/EP0020493A4/en
Application granted granted Critical
Publication of EP0020493B1 publication Critical patent/EP0020493B1/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
    • H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
EP19790901332 1978-09-26 1980-04-22 Fluorescent lamp lighting system Expired EP0020493B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US94584278A 1978-09-26 1978-09-26
US945842 1978-09-26

Publications (3)

Publication Number Publication Date
EP0020493A1 EP0020493A1 (en) 1981-01-07
EP0020493A4 true EP0020493A4 (en) 1982-04-22
EP0020493B1 EP0020493B1 (en) 1986-03-12

Family

ID=25483619

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19790901332 Expired EP0020493B1 (en) 1978-09-26 1980-04-22 Fluorescent lamp lighting system

Country Status (7)

Country Link
EP (1) EP0020493B1 (en)
JP (1) JPS5598500A (en)
CA (1) CA1128605A (en)
DE (1) DE2967585D1 (en)
FR (1) FR2443183A2 (en)
MX (1) MX149353A (en)
WO (1) WO1980000776A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2165407B (en) * 1984-10-02 1988-01-20 Ferranti Plc Gas laser power supply apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7807659A (en) * 1977-11-07 1979-05-09 Widmayer Don Frederick ENERGY-SAVING LIGHTING SYSTEM.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3114283A (en) * 1960-10-31 1963-12-17 Bausch & Lomb Light sensing method and apparatus therefor
US3482142A (en) * 1967-12-29 1969-12-02 Sylvania Electric Prod Regulating system for arc discharge devices having means to compensate for supply voltage and load variations
US3479560A (en) * 1967-12-29 1969-11-18 Sylvania Electric Prod Arc discharge regulating device having means to compensate for supply voltage variations
DE2019240A1 (en) * 1969-04-23 1970-11-12 Fuji Photo Film Co Ltd Copy device for color photography

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7807659A (en) * 1977-11-07 1979-05-09 Widmayer Don Frederick ENERGY-SAVING LIGHTING SYSTEM.
DE2848018A1 (en) * 1977-11-07 1979-05-10 Don Frederick Widmayer PROCESS AND ARRANGEMENT FOR ENERGY SAVING WHEN OPERATING GAS DISCHARGE LAMPS, IN PARTICULAR FLUORESCENT LAMPS
GB2007880A (en) * 1977-11-07 1979-05-23 Widmayer D F Energy conserving automatic light output system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO8000776A1 *

Also Published As

Publication number Publication date
EP0020493B1 (en) 1986-03-12
WO1980000776A1 (en) 1980-04-17
FR2443183A2 (en) 1980-06-27
JPS5598500A (en) 1980-07-26
CA1128605A (en) 1982-07-27
EP0020493A1 (en) 1981-01-07
FR2443183B2 (en) 1984-06-15
MX149353A (en) 1983-10-26
DE2967585D1 (en) 1986-04-17

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