FR831377A - Lighting device for projection apparatus for silent or sound cinematographic films - Google Patents

Lighting device for projection apparatus for silent or sound cinematographic films

Info

Publication number
FR831377A
FR831377A FR831377DA FR831377A FR 831377 A FR831377 A FR 831377A FR 831377D A FR831377D A FR 831377DA FR 831377 A FR831377 A FR 831377A
Authority
FR
France
Prior art keywords
silent
sound
lighting device
projection apparatus
cinematographic films
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR831377A publication Critical patent/FR831377A/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
    • H05B41/30—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp
    • H05B41/34—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp to provide a sequence of flashes
    • 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
    • H05B41/23—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 not having an auxiliary starting electrode
    • H05B41/231—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 not having an auxiliary starting electrode for high-pressure lamps
    • 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
    • H05B41/23—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 not having an auxiliary starting electrode
    • H05B41/232—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 not having an auxiliary starting electrode for low-pressure lamps
FR831377D 1936-12-29 1937-12-28 Lighting device for projection apparatus for silent or sound cinematographic films Expired FR831377A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE425453X 1936-12-29

Publications (1)

Publication Number Publication Date
FR831377A true FR831377A (en) 1938-09-01

Family

ID=41131829

Family Applications (1)

Application Number Title Priority Date Filing Date
FR831377D Expired FR831377A (en) 1936-12-29 1937-12-28 Lighting device for projection apparatus for silent or sound cinematographic films

Country Status (6)

Country Link
US (1) US2134439A (en)
BE (1) BE425453A (en)
CH (1) CH201641A (en)
DK (1) DK56237C (en)
FR (1) FR831377A (en)
GB (1) GB492943A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2575001A (en) * 1948-02-07 1951-11-13 Hanovia Chemical & Mfg Co Operating system for discharge devices and vapor arc lamps
US2893289A (en) * 1953-03-09 1959-07-07 Harold E Edgerton Microscope flash-photography system and apparatus
US2856565A (en) * 1956-12-24 1958-10-14 Elox Corp Michigan Electrical discharge machining
US2943554A (en) * 1957-04-22 1960-07-05 Kastner Erich Film printing machine
US3114893A (en) * 1958-03-19 1963-12-17 Ciaude Paz Et Visseaux Device for marking with light a high voltage overhead line
SE411966B (en) * 1976-07-12 1980-02-11 Electrolux Ab COUPLING FOR A GLAMP LAMP INTENDED TO SHOW FAST OR FLASHING LIGHT
SE516389C2 (en) * 1997-07-02 2002-01-08 Ignitor=free circuit for tube lighting unit e.g. sodium or fluorescent - has discharge tube in parallel with resistor and diode, and in series with inductor and capacitor paralleled by resistor.

Also Published As

Publication number Publication date
CH201641A (en) 1938-12-15
GB492943A (en) 1938-09-29
DK56237C (en) 1939-05-30
BE425453A (en) 1938-01-31
US2134439A (en) 1938-10-25

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