ZA731022B - Improvements in ballast circuits for discharge lamps - Google Patents

Improvements in ballast circuits for discharge lamps

Info

Publication number
ZA731022B
ZA731022B ZA731022A ZA731022A ZA731022B ZA 731022 B ZA731022 B ZA 731022B ZA 731022 A ZA731022 A ZA 731022A ZA 731022 A ZA731022 A ZA 731022A ZA 731022 B ZA731022 B ZA 731022B
Authority
ZA
South Africa
Prior art keywords
discharge lamps
ballast circuits
ballast
circuits
lamps
Prior art date
Application number
ZA731022A
Inventor
P Major
K Ogden
Original Assignee
Thorn Electrical Ind 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 Thorn Electrical Ind Ltd filed Critical Thorn Electrical Ind Ltd
Publication of ZA731022B publication Critical patent/ZA731022B/en

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
    • H05B41/02—Details
    • H05B41/04—Starting switches
    • H05B41/042—Starting switches using semiconductor devices
    • 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
ZA731022A 1972-02-16 1973-02-13 Improvements in ballast circuits for discharge lamps ZA731022B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB725772A GB1387842A (en) 1972-02-16 1972-02-16 Ballast circuits for discharge lamps

Publications (1)

Publication Number Publication Date
ZA731022B true ZA731022B (en) 1973-11-28

Family

ID=9829649

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA731022A ZA731022B (en) 1972-02-16 1973-02-13 Improvements in ballast circuits for discharge lamps

Country Status (7)

Country Link
US (1) US3857063A (en)
AU (1) AU5227673A (en)
DE (1) DE2307416A1 (en)
GB (1) GB1387842A (en)
IN (1) IN137730B (en)
NL (1) NL7302136A (en)
ZA (1) ZA731022B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4394603A (en) * 1978-09-26 1983-07-19 Controlled Environment Systems Inc. Energy conserving automatic light output system
US4260932A (en) * 1978-10-12 1981-04-07 Vance Johnson Method and circuit for facilitating the starting and steady state flickerless operation of a discharge lamp
FR2454246A1 (en) * 1979-04-12 1980-11-07 Gen Electric Ignition circuit for high pressure arc discharge lamp - has voltage doubler and oscillating inverter with transformer fed by pulse with capacitor and diode in secondary circuit
JPS5782100U (en) * 1980-11-07 1982-05-20
WO1983001555A1 (en) * 1981-10-13 1983-04-28 Lights Of America Inc Circuit for starting and operating discharge lamps
US4463285A (en) * 1982-03-08 1984-07-31 Nilssen Ole K DC Ballasting means for fluorescent lamps
JPS59154736A (en) * 1983-02-21 1984-09-03 Hitachi Ltd Low pressure mercury vapor discharge lamp
HU191319B (en) * 1985-03-11 1987-02-27 Sebestyen,Laszlo,Hu Method and circuit arrangement for firing light sources of high firing voltage
DE3614708A1 (en) * 1986-04-30 1987-11-19 Schmidt Michael CONTROL CIRCUIT FOR AN ARC LAMP
US4929871A (en) * 1986-06-16 1990-05-29 Gerfast Sten R Transformerless current-limiting circuit
US5284327A (en) * 1992-04-29 1994-02-08 Aluminum Company Of America Extrusion quenching apparatus and related method
JP2008211946A (en) * 2007-02-28 2008-09-11 Sanden Corp Power conversion apparatus

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2892126A (en) * 1956-12-26 1959-06-23 Gen Electric Starting and operating circuit for arc discharge device
US3170084A (en) * 1961-11-03 1965-02-16 Westinghouse Electric Corp Lamp starting and operating circuit
US3354379A (en) * 1966-01-26 1967-11-21 Gen Electric Rectifier circuit with voltage multiplication
US3676735A (en) * 1969-09-25 1972-07-11 Sylvania Electric Prod Resonator ballast for arc discharge lamps
US3679934A (en) * 1970-02-05 1972-07-25 Hewlett Packard Co Automatic restarting laser power supply
US3758815A (en) * 1972-01-04 1973-09-11 Gte Sylvania Inc Supplemental energy storage circuit for arc discharge lamps

Also Published As

Publication number Publication date
NL7302136A (en) 1973-08-20
DE2307416A1 (en) 1973-08-23
IN137730B (en) 1975-09-13
GB1387842A (en) 1975-03-19
US3857063A (en) 1974-12-24
AU5227673A (en) 1974-08-22

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