BE425453A - Device for recording or reproducing silent or sound films - Google Patents

Device for recording or reproducing silent or sound films

Info

Publication number
BE425453A
BE425453A BE425453A BE425453A BE425453A BE 425453 A BE425453 A BE 425453A BE 425453 A BE425453 A BE 425453A BE 425453 A BE425453 A BE 425453A BE 425453 A BE425453 A BE 425453A
Authority
BE
Belgium
Prior art keywords
silent
reproducing
recording
sound films
films
Prior art date
Application number
BE425453A
Other languages
French (fr)
Original Assignee
Philips 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 Nv filed Critical Philips Nv
Publication of BE425453A publication Critical patent/BE425453A/en

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
BE425453A 1936-12-29 1937-12-27 Device for recording or reproducing silent or sound films BE425453A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
BE425453A true BE425453A (en) 1938-01-31

Family

ID=41131829

Family Applications (1)

Application Number Title Priority Date Filing Date
BE425453A BE425453A (en) 1936-12-29 1937-12-27 Device for recording or reproducing silent or sound 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
DK56237C (en) 1939-05-30
CH201641A (en) 1938-12-15
GB492943A (en) 1938-09-29
FR831377A (en) 1938-09-01
US2134439A (en) 1938-10-25

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