FR990441A - Improvement in the supply of fluoreseent lighting tubes - Google Patents

Improvement in the supply of fluoreseent lighting tubes

Info

Publication number
FR990441A
FR990441A FR990441DA FR990441A FR 990441 A FR990441 A FR 990441A FR 990441D A FR990441D A FR 990441DA FR 990441 A FR990441 A FR 990441A
Authority
FR
France
Prior art keywords
fluoreseent
improvement
supply
lighting tubes
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.)
Expired
Application number
Other languages
French (fr)
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.)
HEWITTIC SOC
Original Assignee
HEWITTIC SOC
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 HEWITTIC SOC filed Critical HEWITTIC SOC
Application granted granted Critical
Publication of FR990441A publication Critical patent/FR990441A/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
    • H05B41/24—Circuit arrangements in which the lamp is fed by high frequency ac, or with separate oscillator frequency
    • H05B41/245—Circuit arrangements in which the lamp is fed by high frequency ac, or with separate oscillator frequency for a plurality of lamps
FR990441D 1949-07-08 1949-07-08 Improvement in the supply of fluoreseent lighting tubes Expired FR990441A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR990441T 1949-07-08

Publications (1)

Publication Number Publication Date
FR990441A true FR990441A (en) 1951-09-21

Family

ID=9544183

Family Applications (1)

Application Number Title Priority Date Filing Date
FR990441D Expired FR990441A (en) 1949-07-08 1949-07-08 Improvement in the supply of fluoreseent lighting tubes

Country Status (1)

Country Link
FR (1) FR990441A (en)

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