GB523123A - Improvements in sources of light comprising a high-pressure mercury-vapour electric discharge and an incandescent filament in series with it - Google Patents

Improvements in sources of light comprising a high-pressure mercury-vapour electric discharge and an incandescent filament in series with it

Info

Publication number
GB523123A
GB523123A GB3746838A GB3746838A GB523123A GB 523123 A GB523123 A GB 523123A GB 3746838 A GB3746838 A GB 3746838A GB 3746838 A GB3746838 A GB 3746838A GB 523123 A GB523123 A GB 523123A
Authority
GB
United Kingdom
Prior art keywords
filament
series
light
discharge
reactive
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
GB3746838A
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.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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 Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Priority to GB3746838A priority Critical patent/GB523123A/en
Publication of GB523123A publication Critical patent/GB523123A/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
    • H05B41/23—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

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

523,123. Electricity supply for discharge lamps. GENERAL ELECTRIC CO., Ltd. (Patent- Treuhand-Ges. fur Elektrische Gluhlampen). Dec. 23, 1938, No. 37468. Addition to 511,199. [Class 38 (iv)] Relates to a supply circuit for a mercury vapour discharge tube combined with a filament lamp to improve the luminous efficiency wherein a reactive impedance is used in series with both the filament and the discharge as described in the parent Specification. This arrangement is modified by (1) the introduction of a second reactive element, for example, the condenser 5, Fig. 1, shunted across the discharge lamp 1 and the first reactive element 2 (an inductance) in series, but not across the filament 3, the first and second reactive elements being of opposite kinds and (2) by a new choice of the dimensions of the filament so that, in full operation, the voltage drop across it and the amount of light it yields are the same in the modified as in the unmodified combination.
GB3746838A 1938-12-23 1938-12-23 Improvements in sources of light comprising a high-pressure mercury-vapour electric discharge and an incandescent filament in series with it Expired GB523123A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3746838A GB523123A (en) 1938-12-23 1938-12-23 Improvements in sources of light comprising a high-pressure mercury-vapour electric discharge and an incandescent filament in series with it

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3746838A GB523123A (en) 1938-12-23 1938-12-23 Improvements in sources of light comprising a high-pressure mercury-vapour electric discharge and an incandescent filament in series with it

Publications (1)

Publication Number Publication Date
GB523123A true GB523123A (en) 1940-07-05

Family

ID=10396707

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3746838A Expired GB523123A (en) 1938-12-23 1938-12-23 Improvements in sources of light comprising a high-pressure mercury-vapour electric discharge and an incandescent filament in series with it

Country Status (1)

Country Link
GB (1) GB523123A (en)

Similar Documents

Publication Publication Date Title
GB523123A (en) Improvements in sources of light comprising a high-pressure mercury-vapour electric discharge and an incandescent filament in series with it
GB511199A (en) Improvements in sources of light comprising a high-pressure mercury vapour electric discharge and an incandescent filament in series with it
GB635304A (en) Non-stroboscopic discharge lamp units
GB489925A (en) Improvements in and relating to electric discharge lamps
GB524874A (en) Improvements in electric discharge lamps
GB521498A (en) Device for operating high-pressure metal-vapour electric discharge lamps having thermionic electrodes
GB501854A (en) Improvements in high-pressure mercury-vapour electric discharge lamps
US2039978A (en) Electric discharge lamp
GB501901A (en) Improvements in sources of light comprising a high-pressure mercury-vapour electric discharge device
GB374466A (en) Improvements in or relating to electric glow discharge lamps
GB502585A (en) Improvements in sources of light comprising electric discharge lamps
GB489591A (en) Improvements in combinations of electric discharge lamps and electric incandescent lamps
GB432057A (en) Improvements in and relating to electric illuminating lamps
AU112050B2 (en) Improvements in sources of light comprising a high-pressure mercury-vapour electric discharge andan incandescent filament in series with it
GB510690A (en) Improvements in sources of light comprising in combination a high-pressure metal-vapour electric discharge device and an electric incandescent filament
AU9440A (en) Improvements in sources of light comprising a high-pressure mercury-vapour electric discharge andan incandescent filament in series with it
GB414611A (en) Improvements in luminous sources formed by electric discharge tubes
GB1035787A (en) Improvements in or relating to electric circuit arrangements for operating electric discharge lamps
GB466848A (en) Improvements in and relating to electric discharge devices
GB261402A (en) Improvements in or relating to thermionic lamps
GB543811A (en) Improvements in high pressure mercury vapour electric discharge lamps
GB426808A (en) Improvements relating to the use of electric discharge devices for illuminating purposes
GB473347A (en) Improvements relating to electric discharge lamps
GB527497A (en) Improvements in and relating to electric discharge apparatus
GB522106A (en) Improvements in high-pressure metal-vapour electric discharge lamps