Electronic circuit for supplying high-frequency power for fluorescent lamps

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(11)

EP 1 315 406 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	12.05.2004 Bulletin 2004/20

(43)	Date of publication A2:
	28.05.2003 Bulletin 2003/22

(21)	Application number: 02079806.2

(22)	Date of filing: 18.11.2002

(51)	International Patent Classification (IPC)⁷: H05B 41/282, H05B 41/36

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
	Designated Extension States:
	AL LT LV MK RO SI

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Priority:

21.11.2001 IT MI20012453

(71)	Applicant: VLM S.p.A.
	20090 Buccinasco (Milan) (IT)

(72)	Inventor:
	Dal Santo, Ivan 20080 Calvignasco (Milan) (IT)

(74)	Representative: De Gregori, Antonella et al
	Ing. Barzano & Zanardo Milano S.p.A. Via Borgonuovo 10 20121 Milano 20121 Milano (IT)

(54)	Electronic circuit for supplying high-frequency power for fluorescent lamps

(57) An electronic circuit for supplying high-frequency power for fluorescent lamps (LF) of different types and powers, according to which the lamp (LF) is recognised by measuring the active power absorbed and, therefore, it is supplied with suitable current and voltage values; the power supply circuit thus adapts to each individual lamp, ensuring high performance, high efficiency and long useful life.

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