GB8918671D0 - Power circuit - Google Patents

Power circuit

Info

Publication number
GB8918671D0
GB8918671D0 GB898918671A GB8918671A GB8918671D0 GB 8918671 D0 GB8918671 D0 GB 8918671D0 GB 898918671 A GB898918671 A GB 898918671A GB 8918671 A GB8918671 A GB 8918671A GB 8918671 D0 GB8918671 D0 GB 8918671D0
Authority
GB
United Kingdom
Prior art keywords
power circuit
circuit
power
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.)
Withdrawn
Application number
GB898918671A
Other versions
GB2223367A (en
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.)
Marconi Electronic Devices Ltd
Original Assignee
Marconi Electronic Devices 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 Marconi Electronic Devices Ltd filed Critical Marconi Electronic Devices Ltd
Publication of GB8918671D0 publication Critical patent/GB8918671D0/en
Publication of GB2223367A publication Critical patent/GB2223367A/en
Withdrawn legal-status Critical Current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
    • H05B41/26—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
    • H05B41/288—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 and specially adapted for lamps without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps
    • H05B41/292—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2921—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
    • H05B41/2925—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal lamp operating conditions
GB8918671A 1988-09-28 1989-08-16 High frequency supply for a negative resistance-temperature coefficient load Withdrawn GB2223367A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB888822781A GB8822781D0 (en) 1988-09-28 1988-09-28 Power circuit

Publications (2)

Publication Number Publication Date
GB8918671D0 true GB8918671D0 (en) 1989-09-27
GB2223367A GB2223367A (en) 1990-04-04

Family

ID=10644396

Family Applications (2)

Application Number Title Priority Date Filing Date
GB888822781A Pending GB8822781D0 (en) 1988-09-28 1988-09-28 Power circuit
GB8918671A Withdrawn GB2223367A (en) 1988-09-28 1989-08-16 High frequency supply for a negative resistance-temperature coefficient load

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB888822781A Pending GB8822781D0 (en) 1988-09-28 1988-09-28 Power circuit

Country Status (2)

Country Link
EP (1) EP0361665A3 (en)
GB (2) GB8822781D0 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI98876C (en) * 1989-12-29 1997-08-25 Zumtobel Ag Switching device and method for operating (and lighting) the discharge lamp
DE4015400A1 (en) * 1990-05-14 1991-11-21 Hella Kg Hueck & Co Starter circuit for vehicle gas discharge lamp - has resonator circuit with limiting action and including two inductances and capacitor

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL145431B (en) * 1964-05-30 1975-03-17 Philips Nv CIRCUIT FOR FEEDING A GAS DISCHARGE TUBE.
US4277728A (en) * 1978-05-08 1981-07-07 Stevens Luminoptics Power supply for a high intensity discharge or fluorescent lamp
GB2057795A (en) * 1979-08-07 1981-04-01 Eleco Ltd Improvements in or relating to operating circuits for electric discharge lamps
US4358712A (en) * 1980-12-29 1982-11-09 Altex Scientific, Inc. Discharge lamp ballast
US4554487A (en) * 1983-05-17 1985-11-19 Nilssen Ole K Electronic fluorescent lamp ballast with overload protection
US4608523A (en) * 1984-01-16 1986-08-26 Nilssen Ole K Phase correction for series-resonant ballasts
GB2172451B (en) * 1985-02-07 1989-06-14 El Co Villamos Keszulekek Es S Circuit system for igniting and lighting a high-pressure discharge lamp particulary a sodium vapour lamp
US4734624A (en) * 1985-07-25 1988-03-29 Matsushita Electric Works, Ltd. Discharge lamp driving circuit

Also Published As

Publication number Publication date
EP0361665A3 (en) 1990-05-30
GB2223367A (en) 1990-04-04
GB8822781D0 (en) 1988-11-02
EP0361665A2 (en) 1990-04-04

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)