FR724643A - Lighting device for luminescent electric tubes - Google Patents

Lighting device for luminescent electric tubes

Info

Publication number
FR724643A
FR724643A FR724643DA FR724643A FR 724643 A FR724643 A FR 724643A FR 724643D A FR724643D A FR 724643DA FR 724643 A FR724643 A FR 724643A
Authority
FR
France
Prior art keywords
lighting device
electric tubes
luminescent electric
luminescent
tubes
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.)
Osa Participations Industrielles SA
Original Assignee
Osa Participations Industrielles SA
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 Osa Participations Industrielles SA filed Critical Osa Participations Industrielles SA
Application granted granted Critical
Publication of FR724643A publication Critical patent/FR724643A/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
    • H05B41/16—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies
    • H05B41/20—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch
    • H05B41/22—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch for lamps having an auxiliary starting electrode
FR724643D 1930-07-05 1931-03-03 Lighting device for luminescent electric tubes Expired FR724643A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE724643X 1930-07-05

Publications (1)

Publication Number Publication Date
FR724643A true FR724643A (en) 1932-04-29

Family

ID=6634567

Family Applications (1)

Application Number Title Priority Date Filing Date
FR724643D Expired FR724643A (en) 1930-07-05 1931-03-03 Lighting device for luminescent electric tubes

Country Status (1)

Country Link
FR (1) FR724643A (en)

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