GB486768A - Improvements in or relating to high-pressure metal vapour electric discharge lamps - Google Patents

Improvements in or relating to high-pressure metal vapour electric discharge lamps

Info

Publication number
GB486768A
GB486768A GB3331836A GB3331836A GB486768A GB 486768 A GB486768 A GB 486768A GB 3331836 A GB3331836 A GB 3331836A GB 3331836 A GB3331836 A GB 3331836A GB 486768 A GB486768 A GB 486768A
Authority
GB
United Kingdom
Prior art keywords
electrodes
terminals
pair
separate
arrangement
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
GB3331836A
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 GB3331836A priority Critical patent/GB486768A/en
Publication of GB486768A publication Critical patent/GB486768A/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

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

486,768. Supply systems for discharge lamps. GENERAL ELECTRIC CO., Ltd. (Patent-Treuhand-Ges. f³r Elektrische Gliihlampen) Dec. 4, 1936, Nos. 33318/36 and 26800/37. [Class 38 (iv)] [Also in Group XL] A high-pressure discharge lamp (i.e. operating at a pressure of at least 10 atmospheres) is provided with three or more electrodes, no two of which are more than 6 cms. apart, so arranged that no two electrodes are separated by a distance greater than that between the most widely separated pair of co-operating electrodes, each pair of cooperating electrodes being in circuit with a separate stabilizing impedance. Two electrodes directly connected without an intervening impedance are counted as a single electrode, and starting electrodes, such as those described in Specification. 472,658, [Group XL], are not reckoned. All the electrodes may be fed from the same source, or different pairs from separate sources, or from' separate secondaries of a single transformer. The Figure shows an example of the last arrangement, the secondaries 17, 18, 19 of the transformer 16 being connected to the terminals 15, 14, 12, 15, and 13, 12 respectively, through the impedances shown. An arrangement of six terminals fed from the phases of a threephase system is also shown. The arrangement may be such that the supplies to the different pairs of terminals are in phase, or the supply to one pair of terminals may be 90‹ out of phase with the supply to a separate pair of terminals. Reference has been directed by the Comptroller to Specification 476,818.
GB3331836A 1936-12-04 1936-12-04 Improvements in or relating to high-pressure metal vapour electric discharge lamps Expired GB486768A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3331836A GB486768A (en) 1936-12-04 1936-12-04 Improvements in or relating to high-pressure metal vapour electric discharge lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3331836A GB486768A (en) 1936-12-04 1936-12-04 Improvements in or relating to high-pressure metal vapour electric discharge lamps

Publications (1)

Publication Number Publication Date
GB486768A true GB486768A (en) 1938-06-07

Family

ID=10351383

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3331836A Expired GB486768A (en) 1936-12-04 1936-12-04 Improvements in or relating to high-pressure metal vapour electric discharge lamps

Country Status (1)

Country Link
GB (1) GB486768A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2145590A (en) * 1981-03-19 1985-03-27 Loughborough Consult Ltd Generating a plurality of electric discharges

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2145590A (en) * 1981-03-19 1985-03-27 Loughborough Consult Ltd Generating a plurality of electric discharges
GB2145591A (en) * 1981-03-19 1985-03-27 Loughborough Consult Ltd Generating a plurality of electric discharges

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