GB925033A - Improvements relating to fluorescent discharge lamp operating circuits - Google Patents

Improvements relating to fluorescent discharge lamp operating circuits

Info

Publication number
GB925033A
GB925033A GB8317/61A GB831761A GB925033A GB 925033 A GB925033 A GB 925033A GB 8317/61 A GB8317/61 A GB 8317/61A GB 831761 A GB831761 A GB 831761A GB 925033 A GB925033 A GB 925033A
Authority
GB
United Kingdom
Prior art keywords
cycles
discharge lamp
improvements relating
lamp operating
fluorescent discharge
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
GB8317/61A
Inventor
John Mackenzie Saunderson
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.)
Ferguson Radio Corp Ltd
Original Assignee
Ferguson Radio Corp 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 Ferguson Radio Corp Ltd filed Critical Ferguson Radio Corp Ltd
Priority to GB8317/61A priority Critical patent/GB925033A/en
Priority to US176247A priority patent/US3227921A/en
Priority to BE614659A priority patent/BE614659A/en
Publication of GB925033A publication Critical patent/GB925033A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/14—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias
    • H01F29/146—Constructional details
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/5383—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a self-oscillating arrangement
    • H02M7/53832—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a self-oscillating arrangement in a push-pull arrangement
    • H02M7/53835—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a self-oscillating arrangement in a push-pull arrangement of the parallel type
    • 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
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/282—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices
    • 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
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/282—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices
    • H05B41/2821—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices by means of a single-switch converter or a parallel push-pull converter in the final stage
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • 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
    • Y10S315/07—Starting and control circuits for gas discharge lamp using transistors

Abstract

925,033. Supply circuits for discharge lamps ; inductors. FERGUSON RADIO CORPORATION Ltd. Feb. 26, 1962 [March 7, 1961], No. 8317/61. Classes 38 (2) and 38 (4). A fluorescent lamp 30, supplied from a battery-operated, push-pull transistor power converter 10 producing a square wave output of frequency about 1000 cycles/sec., has a ballast impedance device 32 comprising two saturable reactors 36 whose windings 46 are connected in series so that positive and negative half-cycles of current tend to drive the reactors respectively out of saturation by a barium ferrite permanent slab magnet 44 which fills a skewed gap 42 in the reactor core 40 made of magnetically-soft material. The ballast impedance 32 also serves as the starting inductance to strike the lamp 30 on opening of the starter switch 34.
GB8317/61A 1961-03-07 1961-03-07 Improvements relating to fluorescent discharge lamp operating circuits Expired GB925033A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB8317/61A GB925033A (en) 1961-03-07 1961-03-07 Improvements relating to fluorescent discharge lamp operating circuits
US176247A US3227921A (en) 1961-03-07 1962-02-28 Circuit for fluorescent discharge lamp including saturable reactors
BE614659A BE614659A (en) 1961-03-07 1962-03-05 Improvements relating to the operating circuits of fluorescent discharge lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8317/61A GB925033A (en) 1961-03-07 1961-03-07 Improvements relating to fluorescent discharge lamp operating circuits

Publications (1)

Publication Number Publication Date
GB925033A true GB925033A (en) 1963-05-01

Family

ID=9850215

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8317/61A Expired GB925033A (en) 1961-03-07 1961-03-07 Improvements relating to fluorescent discharge lamp operating circuits

Country Status (3)

Country Link
US (1) US3227921A (en)
BE (1) BE614659A (en)
GB (1) GB925033A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL292750A (en) * 1963-05-14
US3371244A (en) * 1965-02-08 1968-02-27 Ultra Violet Products Inc Ultraviolet lamp transformer

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2381763A (en) * 1940-12-31 1945-08-07 Automatic Elect Lab Inductive device
US2382012A (en) * 1941-12-04 1945-08-14 Boucher And Keiser Company Fluorescent lamp circuits
US2665406A (en) * 1946-04-01 1954-01-05 Carmichael Thomas Frazer High power factor current limiter
US2488393A (en) * 1946-10-12 1949-11-15 Westinghouse Electric Corp Reactor
US2503155A (en) * 1948-05-18 1950-04-04 Rca Corp Variable inductance device
US2844786A (en) * 1951-04-23 1958-07-22 Philips Corp Magnetic system
US2869087A (en) * 1954-04-23 1959-01-13 Cgs Lab Inc Magnetic apparatus
US2866943A (en) * 1956-01-12 1958-12-30 John F Ringelman Circuit for providing improved core characteristics for saturable reactor devices
US2961579A (en) * 1958-06-16 1960-11-22 Day Ray Products Inc Dimming circuits for fluorescent lamps

Also Published As

Publication number Publication date
BE614659A (en) 1962-07-02
US3227921A (en) 1966-01-04

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