GB553301A - Improvements in or relating to circuit arrangements for electric gas discharge tubes - Google Patents

Improvements in or relating to circuit arrangements for electric gas discharge tubes

Info

Publication number
GB553301A
GB553301A GB1155641A GB1155641A GB553301A GB 553301 A GB553301 A GB 553301A GB 1155641 A GB1155641 A GB 1155641A GB 1155641 A GB1155641 A GB 1155641A GB 553301 A GB553301 A GB 553301A
Authority
GB
United Kingdom
Prior art keywords
winding
tube
choke
impedance
gas 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
GB1155641A
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
Priority to GB1155641A priority Critical patent/GB553301A/en
Publication of GB553301A publication Critical patent/GB553301A/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
    • H05B41/2325—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 provided with pre-heating electrodes

Landscapes

  • Discharge Lamp (AREA)

Abstract

553,301. Supply systems for space discharge apparatus. PHILIPS LAMPS, Ltd. (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). Sept. 9, 1941, No. 11556. [Classes 38 (ii) and 38 (iv)] [Also in Group XL] The filament heating circuit of a gas discharge tube includes besides the normal ballast impedance 9 a double-winding choke 8, 13 with one portion on each side of a filament 2 and wound so that as far as the electrode heating circuit through the condenser 14 is concerned its impedance is a minimum. When, however, the electrodes are sufficiently heated and the tube starts, the winding 13 being shunted by the discharge carries less current than the winding 8 and the choke has an effective impedance. A thinner gauge wire may be used for the winding 8 than for the winding 13 and the winding 8 may consist of a few strands of a stranded inductor the major number of which serve for the winding 13. The condenser 14 and ballast choke 9 may be interchanged. A second double-wired choke 8, 13 may be associated with the other terminals of the tube. 'The invention is applicable to any tube comprising conducting bridges between terminals 4, 5 and 6, 7 whereby the circuit becomes interrupted when the tube is not in its holder ; these bridges may be auxiliary discharge paths. Specification 525,133 is referred to.
GB1155641A 1941-09-09 1941-09-09 Improvements in or relating to circuit arrangements for electric gas discharge tubes Expired GB553301A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1155641A GB553301A (en) 1941-09-09 1941-09-09 Improvements in or relating to circuit arrangements for electric gas discharge tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1155641A GB553301A (en) 1941-09-09 1941-09-09 Improvements in or relating to circuit arrangements for electric gas discharge tubes

Publications (1)

Publication Number Publication Date
GB553301A true GB553301A (en) 1943-05-17

Family

ID=9988408

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1155641A Expired GB553301A (en) 1941-09-09 1941-09-09 Improvements in or relating to circuit arrangements for electric gas discharge tubes

Country Status (1)

Country Link
GB (1) GB553301A (en)

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