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GB498107A - Improvements in circuit arrangements for operating electric discharge devices - Google Patents

Improvements in circuit arrangements for operating electric discharge devices

Info

Publication number
GB498107A
GB498107A GB3609737A GB3609737A GB498107A GB 498107 A GB498107 A GB 498107A GB 3609737 A GB3609737 A GB 3609737A GB 3609737 A GB3609737 A GB 3609737A GB 498107 A GB498107 A GB 498107A
Authority
GB
United Kingdom
Prior art keywords
condenser
electrodes
electric discharge
transformers
series
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
GB3609737A
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 GB3609737A priority Critical patent/GB498107A/en
Publication of GB498107A publication Critical patent/GB498107A/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

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

498,107. Supply systems for discharge lamps. GENERAL ELECTRIC CO., Ltd. (Patent-Treuhand-Ges. fiir Elektrische Gl³hlampen) Dec. 30, 1937, No. 36097. [Class 38 (iv)] [Also in Group XL] An electric discharge device, e.g. a lowpressure mercury-vapour lamp 1, having thermionic electrodes 2 heated independently of the discharge is shunted by a condenser 8 and connected to A.C. mains through a choke 6, the condenser circuit including in series the primary winding 9 of at least one transformer 4, the secondary of which supplies heating current to one of the electrodes 2. By this means the condenser 8 which is used for starting may be kept in circuit and be available for re-starting whilst the current in the condenser circuit during normal running is limited. Two transformers 4 may be provided, one for each electrode 2. The transformers may have a common core. The inductance 6 may be in two parts arranged in series at opposite ends of the tube 1 and the electrodes 2 may be indirectly heated..
GB3609737A 1937-12-30 1937-12-30 Improvements in circuit arrangements for operating electric discharge devices Expired GB498107A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3609737A GB498107A (en) 1937-12-30 1937-12-30 Improvements in circuit arrangements for operating electric discharge devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3609737A GB498107A (en) 1937-12-30 1937-12-30 Improvements in circuit arrangements for operating electric discharge devices

Publications (1)

Publication Number Publication Date
GB498107A true GB498107A (en) 1939-01-03

Family

ID=10384916

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3609737A Expired GB498107A (en) 1937-12-30 1937-12-30 Improvements in circuit arrangements for operating electric discharge devices

Country Status (1)

Country Link
GB (1) GB498107A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2099263A1 (en) * 2008-03-05 2009-09-09 Koito Manufacturing Co., Ltd Discharge lamp lighting circuit
US8314573B2 (en) 2008-10-30 2012-11-20 Koito Manufacturing Co., Ltd. Discharge lamp lighting circuit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2099263A1 (en) * 2008-03-05 2009-09-09 Koito Manufacturing Co., Ltd Discharge lamp lighting circuit
US8120264B2 (en) 2008-03-05 2012-02-21 Koito Manufacturing Co., Ltd. Discharge lamp lighting circuit
CN101527996B (en) * 2008-03-05 2012-11-21 株式会社小糸制作所 Discharge lamp lighting circuit
US8314573B2 (en) 2008-10-30 2012-11-20 Koito Manufacturing Co., Ltd. Discharge lamp lighting circuit

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