GB991918A - Improvements in ballast inductors for discharge lamps - Google Patents

Improvements in ballast inductors for discharge lamps

Info

Publication number
GB991918A
GB991918A GB18563/61A GB1856361A GB991918A GB 991918 A GB991918 A GB 991918A GB 18563/61 A GB18563/61 A GB 18563/61A GB 1856361 A GB1856361 A GB 1856361A GB 991918 A GB991918 A GB 991918A
Authority
GB
United Kingdom
Prior art keywords
windings
lamp
auxiliary windings
main
inductor
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
GB18563/61A
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 GB991918A publication Critical patent/GB991918A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S315/00—Electric lamp and discharge devices: systems
    • Y10S315/02—High frequency starting operation for fluorescent lamp
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S315/00—Electric lamp and discharge devices: systems
    • Y10S315/05—Starting and operating circuit for fluorescent lamp

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Coils Of Transformers For General Uses (AREA)

Abstract

991,918. Supply systems for space discharge apparatus. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. May 23, 1961 [May 25, 1960], No. 18563/61. Heading H2H. [Also in Division H1] A ballast inductor unit for a discharge lamp comprises a steel container 56, 57 (Fig. 2) enclosing a ballast inductor 5 having seriesconnected main windings 3, 4 (Figs. 1, 2) and series-connected auxiliary windings 8, 9 wound on a laminated core 51 which has an air gap 51 and four laminated yoke parts 52-55 which may be spot-welded to the container. In operation in the circuit of Fig. 1, the pre-ignition currents in the main and auxiliary windings respectively are in opposite sense so that winding portions 4 and 8 substantially neutralize each other in the no-load condition. In the ignited condition of the lamp the inductor windings operate as a stabilizing impedance and a capacitor 10 improves the power factor while the auxiliary windings 8, 9 prevent the capacitor discharging directly across the lamp.
GB18563/61A 1960-05-25 1961-05-23 Improvements in ballast inductors for discharge lamps Expired GB991918A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL251986 1960-05-25

Publications (1)

Publication Number Publication Date
GB991918A true GB991918A (en) 1965-05-12

Family

ID=19752374

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18563/61A Expired GB991918A (en) 1960-05-25 1961-05-23 Improvements in ballast inductors for discharge lamps

Country Status (4)

Country Link
US (1) US3200290A (en)
CH (1) CH406425A (en)
DE (1) DE1136776C2 (en)
GB (1) GB991918A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2420177A1 (en) * 1974-04-26 1975-11-13 Bertos Ag Starter circuit elements for lamp ignition - include transformer connected choke coils and capacitor
FR2771842A1 (en) * 1997-12-01 1999-06-04 Optelec Safety step-down transformer with integral insulation

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3242381A (en) * 1963-01-02 1966-03-22 Gen Electric Ballast apparatus for operating fluorescent lamps and electrical coil assemblies therefor
US3350605A (en) * 1965-06-09 1967-10-31 Thorn Electrical Ind Ltd Transformer with two-part core for fluorescent lamp circuits
DE1563166B2 (en) * 1966-12-24 1974-06-20 Ceag Dominit Ag, 4600 Dortmund Magnetic voltage stabilizer with a single ferromagnetic core
US3684921A (en) * 1970-08-31 1972-08-15 Luis F De Leon Illuminating apparatus and ballast circuit
DE202005010234U1 (en) * 2005-06-29 2006-11-09 Vogt Electronic Components Gmbh Swinging choke for lighting applications

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB612787A (en) * 1940-04-06 1948-11-17 Philips Nv Improvements in or relating to devices comprising an electric gas discharge tube
DE1080699B (en) * 1940-04-06 1960-04-28 Philips Patentverwaltung Device with an electric gas discharge tube
US2712617A (en) * 1952-04-05 1955-07-05 Hartford Nat Bank & Trust Co Lighting installation comprising a light source with adjustable light-intensity

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2420177A1 (en) * 1974-04-26 1975-11-13 Bertos Ag Starter circuit elements for lamp ignition - include transformer connected choke coils and capacitor
FR2771842A1 (en) * 1997-12-01 1999-06-04 Optelec Safety step-down transformer with integral insulation

Also Published As

Publication number Publication date
DE1136776B (en) 1962-09-20
DE1136776C2 (en) 1963-04-04
CH406425A (en) 1966-01-31
US3200290A (en) 1965-08-10

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