GB424175A - Improvements in or relating to electric lighting installations - Google Patents

Improvements in or relating to electric lighting installations

Info

Publication number
GB424175A
GB424175A GB27850/34A GB2785034A GB424175A GB 424175 A GB424175 A GB 424175A GB 27850/34 A GB27850/34 A GB 27850/34A GB 2785034 A GB2785034 A GB 2785034A GB 424175 A GB424175 A GB 424175A
Authority
GB
United Kingdom
Prior art keywords
choke
condenser
lamps
supply
discharge
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
GB27850/34A
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
Priority claimed from DEN35778D external-priority patent/DE655183C/en
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB424175A publication Critical patent/GB424175A/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
    • H05B41/232—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
    • 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
    • H05B41/18—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 a starting switch

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Regulation Of General Use Transformers (AREA)

Abstract

424,175. Supply systems for vacuum &c. lamps. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, Emmasingel, Eindhoven, Holland. Sept. 28, 1934, No. 27850. Convention date, Sept. 30, 1933. Addition to 389,025. [Class 38 (iv)] [See also Group XL] In a supply system for discharge lamps in which the lamps 6 are connected to transformers 2 the primaries of which are connected to the supply in series with each other and with a choke 4, a condenser 10 is connected across all the transformer primaries during starting to facilitate ignition in the discharge tubes. The condenser may be retained in circuit to cause accelerated heating up of the incandescent electrodes when these are heated by the discharge. The capacity 10 and inductance 4 may be tuned to the third harmonic of the supply frequency and the inductance 4 may be designed to be unsaturated at no load whilst the transformers 2 are run at saturation. The condenser 10 may be switched out after the discharge tubes have been ignited by means responsive to the consequent increase in current, as by a current relay or a relay energized by the leakage field of the choke 4. The choke 4 may comprise two series connected coils, one fixed and one movable on a common core, the latter being suspended from a lever arm counterbalanced by a weight so as to maintain the load current constant.
GB27850/34A 1931-12-01 1934-09-28 Improvements in or relating to electric lighting installations Expired GB424175A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
NL165988X 1931-12-01
DEN35778D DE655183C (en) 1933-09-30 1933-09-30 Arrangement for regulating the vapor pressure in temperature-sensitive discharge lamps
DEN35788D DE632439C (en) 1931-12-01 1933-10-01 Lighting system with several transformers, whose feed circuits are in series, in which a gas-filled electrical incandescent cathode discharge lamp is connected to each transformer
DEN35786D DE632438C (en) 1931-12-01 1933-10-01 Lighting system

Publications (1)

Publication Number Publication Date
GB424175A true GB424175A (en) 1935-02-15

Family

ID=34069175

Family Applications (2)

Application Number Title Priority Date Filing Date
GB27527/34A Expired GB426766A (en) 1931-12-01 1934-09-25 Improvements in or relating to electric lighting installations
GB27850/34A Expired GB424175A (en) 1931-12-01 1934-09-28 Improvements in or relating to electric lighting installations

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB27527/34A Expired GB426766A (en) 1931-12-01 1934-09-25 Improvements in or relating to electric lighting installations

Country Status (4)

Country Link
AT (2) AT142052B (en)
DE (2) DE632438C (en)
DK (2) DK51552C (en)
GB (2) GB426766A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1100169B (en) * 1957-05-20 1961-02-23 Basic Products Corp Transformer device for starting and operating metal vapor discharge lamps without a starter
DE1097030B (en) * 1958-06-03 1961-01-12 Bbc Brown Boveri & Cie Arrangement for the operation and ignition of fluorescent lamps with glow electrodes

Also Published As

Publication number Publication date
GB426766A (en) 1935-04-09
DE632438C (en) 1936-07-08
AT142053B (en) 1935-06-11
DK51552C (en) 1936-04-20
DE632439C (en) 1936-07-08
AT142052B (en) 1935-06-11
DK52334C (en) 1936-11-16

Similar Documents

Publication Publication Date Title
GB624423A (en) Improvements in and relating to automatic voltage stabilizing circuits
GB424175A (en) Improvements in or relating to electric lighting installations
GB420487A (en) Improvements in or relating to circuit arrangements comprising gasfilled electric discharge tubes
GB460783A (en) Improvements relating to electrical coils or windings
US2474624A (en) Compensated magnetic-leakagetype transformer
GB424480A (en) Improvements in circuit arrangements comprising a gasfilled electric discharge tube
GB384914A (en) Transformer with adjustable stray reactance
GB758455A (en) Improvements in or relating to electric circuits for discharge lamps
GB616049A (en) Improvements in circuits for electric discharge apparatus
GB498107A (en) Improvements in circuit arrangements for operating electric discharge devices
GB492763A (en) Improved circuit arrangements for connecting a number of high frequency induction furnaces to a common source of supply
GB601720A (en) A starting device for electric fluorescent electric lamps
GB419173A (en) An improved switching arrangement for lighting installations
GB735421A (en) Improvements in or relating to means for operating electrical discharge tubes or lamps in which two or more tubes or lamps are connected in series
GB431252A (en) Improvements in lighting installations
GB873860A (en) Ballasts for gaseous discharge lamps
GB626985A (en) Improvements in or relating to the starting or striking of fluorescent tubes
GB801596A (en) Circuit for energizing at least one gaseous electric discharge lamp
GB514547A (en) Improvements in supply systems for high-voltage high-frequency apparatus
GB1268067A (en) Control circuit for starting and operating a gas discharge tube
GB730656A (en) Improvements in and relating to constant current circuits for operating electric discharge lamps
GB507733A (en) Improvements in and relating to transformers
GB650992A (en) Improvements in or relating to circuit arrangements for electric discharge lamps
GB639295A (en) Improvements in supply circuits for electric discharge tubes
GB586152A (en) Improvements in and relating to apparatus for starting and controlling electric discharge devices