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GB965955A - Improvements in ignition and operating circuit arrangements for discharge tubes - Google Patents

Improvements in ignition and operating circuit arrangements for discharge tubes

Info

Publication number
GB965955A
GB965955A GB2021362A GB2021362A GB965955A GB 965955 A GB965955 A GB 965955A GB 2021362 A GB2021362 A GB 2021362A GB 2021362 A GB2021362 A GB 2021362A GB 965955 A GB965955 A GB 965955A
Authority
GB
United Kingdom
Prior art keywords
windings
ignition
operating circuit
discharge tubes
circuit arrangements
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
GB2021362A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries Ltd
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 Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB965955A publication Critical patent/GB965955A/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/08—High-leakage transformers or inductances
    • H01F38/10—Ballasts, e.g. for discharge lamps

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Oxygen, Ozone, And Oxides In General (AREA)

Abstract

965,955. Inductances. PHILIPS ELECTRICAL INDUSTRIES Ltd. May 25, 1962 [May 29, 1961], No. 20213/62. Heading H1T. [Also in Division H2] In a discharge lamp arrangement, as disclosed in Specification 766,711, to allow greater freedom in the design of the transformer, the stray reactances of the windings are made different so that the voltages across the windings differ by at least 10%. In one embodiment an air gap is formed inside one of the winding cores (Fig. 6, not shown). In Fig. 4 the core 11 is T-shaped, one winding 7 being placed against the cross-beam. In a further arrangement (Fig. 2, not shown) the core projects farther from one side of the windings. Design data for the cores and windings are given in the Specification.
GB2021362A 1961-05-29 1962-05-25 Improvements in ignition and operating circuit arrangements for discharge tubes Expired GB965955A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL265288 1961-05-29

Publications (1)

Publication Number Publication Date
GB965955A true GB965955A (en) 1964-08-06

Family

ID=19753065

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2021362A Expired GB965955A (en) 1961-05-29 1962-05-25 Improvements in ignition and operating circuit arrangements for discharge tubes

Country Status (4)

Country Link
CH (1) CH403983A (en)
ES (1) ES277699A1 (en)
GB (1) GB965955A (en)
SE (1) SE322839B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3497767A (en) * 1966-04-14 1970-02-24 Csf Constant intensity monochromatic light source
FR2437053A1 (en) * 1978-09-19 1980-04-18 Espan Carburos Metal IMPROVEMENTS IN CONSTRUCTION OF TRANSFORMERS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3497767A (en) * 1966-04-14 1970-02-24 Csf Constant intensity monochromatic light source
FR2437053A1 (en) * 1978-09-19 1980-04-18 Espan Carburos Metal IMPROVEMENTS IN CONSTRUCTION OF TRANSFORMERS

Also Published As

Publication number Publication date
CH403983A (en) 1965-12-15
SE322839B (en) 1970-04-20
ES277699A1 (en) 1962-08-01

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