[go: up one dir, main page]

GB496473A - Improvements in or relating to devices comprising a gas-discharge tube - Google Patents

Improvements in or relating to devices comprising a gas-discharge tube

Info

Publication number
GB496473A
GB496473A GB19664/38A GB1966438A GB496473A GB 496473 A GB496473 A GB 496473A GB 19664/38 A GB19664/38 A GB 19664/38A GB 1966438 A GB1966438 A GB 1966438A GB 496473 A GB496473 A GB 496473A
Authority
GB
United Kingdom
Prior art keywords
condenser
inductance
self
gas
discharge tube
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
GB19664/38A
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
Publication of GB496473A publication Critical patent/GB496473A/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

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

496,473. Supply systems for discharge lamps. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. July 2, 1938, No. 19664. Convention date, July 5,1937. [Class 38 (iv)] In a supply system for a gas- or vapour-filled discharge lamp a portion 4 of a self-inductance 2 is connected in series with a condenser 6, while the remaining portion 5 of the self-inductance, which is magnetically coupled with the portion 4, is connected in series with the discharge tube 1 and in parallel with the condenser 6, the dimensions of the inductance and capacity being such that the natural frequency of the circuit formed by the portion 4 of the inductance and condenser 6 is at least equal to four times the fundamental frequency of the source of current, and the ratio between the portion 5 of the self-inductance located in parallel with the condenser 6 and the portion 4 is at least equal to four. In the example, with a supply of 220 volts at 50 cycles, the reactance of the coil 2 is 200 ohms, and of the portion 4 is 5 ohms, the capacity of the condenser being 8 ÁF. The natural frequency of the circuit formed by the condenser 6 and portion 4 is 445 cycles. The number of turns of the portion 5 of the choke coil is 5À3 times the number of turns of the portion 4.
GB19664/38A 1937-07-05 1938-07-02 Improvements in or relating to devices comprising a gas-discharge tube Expired GB496473A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE496473X 1937-07-05

Publications (1)

Publication Number Publication Date
GB496473A true GB496473A (en) 1938-11-30

Family

ID=6545038

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19664/38A Expired GB496473A (en) 1937-07-05 1938-07-02 Improvements in or relating to devices comprising a gas-discharge tube

Country Status (1)

Country Link
GB (1) GB496473A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE971932C (en) * 1951-04-14 1959-04-16 Johann Buser Circuit arrangement for the ignition and operation of discharge burners, especially for mixed light lamps
GB2140229A (en) * 1983-05-17 1984-11-21 Emi Plc Thorn Discharge lamp start and supply circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE971932C (en) * 1951-04-14 1959-04-16 Johann Buser Circuit arrangement for the ignition and operation of discharge burners, especially for mixed light lamps
GB2140229A (en) * 1983-05-17 1984-11-21 Emi Plc Thorn Discharge lamp start and supply circuit

Similar Documents

Publication Publication Date Title
GB544997A (en) Improvements in electrical transformers
GB647464A (en) Improvements in or relating to noise-reducing arrangements for discharge-tube amplifiers
GB496473A (en) Improvements in or relating to devices comprising a gas-discharge tube
GB520834A (en) Improved device comprising a high-pressure discharge tube
GB1011991A (en) Improvements in or relating to circuit arrangements including a discharge tube
GB1017120A (en) Improvements in or relating to gas and/or vapour discharge lighting circuits
GB758455A (en) Improvements in or relating to electric circuits for discharge lamps
GB475413A (en) Improvements in high frequency generators for feeding luminous electric discharge tubes
GB1021166A (en) Improvements in or relating to circuit arrangements including two gaseous and/or vapour discharge lamps
US2962629A (en) Transformer for electric discharge lamps
GB498107A (en) Improvements in circuit arrangements for operating electric discharge devices
GB424175A (en) Improvements in or relating to electric lighting installations
GB1268067A (en) Control circuit for starting and operating a gas discharge tube
GB623501A (en) Improvements in and relating to circuits for electric gas discharge lamps
GB601720A (en) A starting device for electric fluorescent electric lamps
GB499817A (en) Protective system for high voltage transformers and the like
GB424480A (en) Improvements in circuit arrangements comprising a gasfilled electric discharge tube
GB510987A (en) Improvements in or relating to supply circuits for luminous electric discharge lampsand tubes
GB550311A (en) Improvements in and relating to current transformers
GB433769A (en) Improvements in or relating to installations comprising an electric discharge tube
GB713734A (en) Improvements in supply circuits for electric discharge tubes
GB605349A (en) Improvements in or relating to inductance coils
GB441534A (en) Improvements in lighting installations
GB873791A (en) Improvements in electric lamp starting and ballast circuits
GB554724A (en) Improvements in or relating to inductance coils