IT991188B - Lampada ad elettroluminescenza o a soarica funzionante ad alta frequenza e metodo per alimentarla - Google Patents

Lampada ad elettroluminescenza o a soarica funzionante ad alta frequenza e metodo per alimentarla

Info

Publication number
IT991188B
IT991188B IT2659173A IT2659173A IT991188B IT 991188 B IT991188 B IT 991188B IT 2659173 A IT2659173 A IT 2659173A IT 2659173 A IT2659173 A IT 2659173A IT 991188 B IT991188 B IT 991188B
Authority
IT
Italy
Prior art keywords
soarica
electroluminescence
powering
high frequency
lamp working
Prior art date
Application number
IT2659173A
Other languages
English (en)
Italian (it)
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
Application granted granted Critical
Publication of IT991188B publication Critical patent/IT991188B/it

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
    • H05B41/2928—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the lamp against abnormal operating conditions
IT2659173A 1972-07-14 1973-07-13 Lampada ad elettroluminescenza o a soarica funzionante ad alta frequenza e metodo per alimentarla IT991188B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3316672 1972-07-14

Publications (1)

Publication Number Publication Date
IT991188B true IT991188B (it) 1975-07-30

Family

ID=10349413

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2659173A IT991188B (it) 1972-07-14 1973-07-13 Lampada ad elettroluminescenza o a soarica funzionante ad alta frequenza e metodo per alimentarla

Country Status (6)

Country Link
BE (1) BE802318A (xx)
DE (1) DE2335589A1 (xx)
FR (1) FR2193298B3 (xx)
IT (1) IT991188B (xx)
LU (1) LU68014A1 (xx)
NL (1) NL7309901A (xx)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE8005271L (sv) * 1980-07-18 1981-06-22 Aos Metall Mek Verk Sett och anordning for att eliminera obehag fororsakande flimmer vid betraktande av rontgenfilm i ljusskap
DE3122183C2 (de) * 1981-06-04 1983-09-22 Philips Patentverwaltung Gmbh, 2000 Hamburg Verfahren zum Betrieb einer Hochdruck-Metalldampfentladungslampe und Schaltungsanordnung zur Ausübung dieses Verfahrens
US4705991A (en) * 1981-06-04 1987-11-10 U.S. Philips Corporation Method of operating a high-pressure metal vapor discharge lamp and circuit arrangement for carrying out this method
GB8711131D0 (en) * 1987-05-12 1987-06-17 Emi Plc Thorn Power supply
US4916362A (en) * 1988-04-05 1990-04-10 Neon Dynamics Corporation Excitation supply for gas discharge tubes
US4980611A (en) * 1988-04-05 1990-12-25 Neon Dynamics Corporation Overvoltage shutdown circuit for excitation supply for gas discharge tubes
EP0439861A1 (en) * 1990-01-29 1991-08-07 Koninklijke Philips Electronics N.V. Circuit arrangement
US5386181A (en) * 1992-01-24 1995-01-31 Neon Dynamics Corporation Swept frequency switching excitation supply for gas discharge tubes

Also Published As

Publication number Publication date
FR2193298B3 (xx) 1976-07-02
FR2193298A1 (xx) 1974-02-15
LU68014A1 (xx) 1973-10-03
BE802318A (fr) 1973-11-05
NL7309901A (xx) 1974-01-16
DE2335589A1 (de) 1974-01-31

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