GB1092199A - Improvements in and relating to circuits for the current supply to gas and/or vapour discharge lamps - Google Patents

Improvements in and relating to circuits for the current supply to gas and/or vapour discharge lamps

Info

Publication number
GB1092199A
GB1092199A GB3144765A GB3144765A GB1092199A GB 1092199 A GB1092199 A GB 1092199A GB 3144765 A GB3144765 A GB 3144765A GB 3144765 A GB3144765 A GB 3144765A GB 1092199 A GB1092199 A GB 1092199A
Authority
GB
United Kingdom
Prior art keywords
source
circuits
relating
gas
current supply
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
GB3144765A
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 Electronics UK Ltd
Original Assignee
Philips Electronic and Associated 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 Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1092199A publication Critical patent/GB1092199A/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

1,092,199. Discharge lamp circuits. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. July 23, 1965 [July 28, 1964], No. 31447/65. Heading H2H. A discharge lamp 1 in addition to being supplied through an inductor 2 from a first source of between 30 and 100 c.p.s. is fed from second source of at least six times the frequency and not more than twice the voltage through a second impedance 5. It is stated that the addition of the second source will permit a lower voltage difference between the first source and the lamp; also, voltage fluctuations have less effect on lamp current. Details are given in the Specification of relative voltages, frequencies, and series impedances 2, 5 for sodium and 1.p. mercury vapour lamps. A common source 4 may be used for a number of lamps, each having a separate capacitive impedance.
GB3144765A 1964-07-28 1965-07-23 Improvements in and relating to circuits for the current supply to gas and/or vapour discharge lamps Expired GB1092199A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6408592A NL6408592A (en) 1964-07-28 1964-07-28

Publications (1)

Publication Number Publication Date
GB1092199A true GB1092199A (en) 1967-11-22

Family

ID=19790636

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3144765A Expired GB1092199A (en) 1964-07-28 1965-07-23 Improvements in and relating to circuits for the current supply to gas and/or vapour discharge lamps

Country Status (3)

Country Link
BE (1) BE667410A (en)
GB (1) GB1092199A (en)
NL (1) NL6408592A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2602604A1 (en) * 1976-01-24 1977-07-28 New Nippon Electric Co Fluorescent discharge tube ignition system - has generator with intermittent oscillating output of low frequency during half period intervals
EP0155729A1 (en) * 1984-03-08 1985-09-25 Philips Patentverwaltung GmbH Circuit device for the AC operation of high-pressure discharge lamps
GB2232543A (en) * 1989-05-18 1990-12-12 Lutron Electronics Co Fluorescent lamp dimming system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2602604A1 (en) * 1976-01-24 1977-07-28 New Nippon Electric Co Fluorescent discharge tube ignition system - has generator with intermittent oscillating output of low frequency during half period intervals
EP0155729A1 (en) * 1984-03-08 1985-09-25 Philips Patentverwaltung GmbH Circuit device for the AC operation of high-pressure discharge lamps
US5025197A (en) * 1984-03-08 1991-06-18 U.S. Philips Corporation Circuit arrangement for A.C. operation of high-pressure gas discharge lamps
GB2232543A (en) * 1989-05-18 1990-12-12 Lutron Electronics Co Fluorescent lamp dimming system

Also Published As

Publication number Publication date
NL6408592A (en) 1966-01-31
BE667410A (en)

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