IMPROVEMENTS IN LAMP DRIVE CIRCUITS, AND CINE FILM PROJECTORS OR CAMERAS INCORPORATING THE SAME - Patent 0020390

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EP 0 020 390 A1

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(43)	Date of publication:
	07.01.1981 Bulletin 1981/01

(21)	Application number: 79901079.0

(22)	Date of filing: 05.09.1979

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International Patent Classification (IPC):

H05B 41/ 30^{( . )}

H05B 41/ 288^{( . )}

(86)	International application number:
	PCT/GB1979/000147

(87)	International publication number:
	WO 1980/000647 (03.04.1980 Gazette 1980/07)

(84)	Designated Contracting States:
	AT CH DE FR GB LU NL SE

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Priority:

05.09.1978 GB 19350058578
20.02.1979 GB 19790005917

(71)	Applicant: THORN ELECTRICAL INDUSTRIES LIMITED
	London WC2H 9ED (GB)

(72)	Inventor:
	PIASKOWSKI, Andrzej, Dionizy Cramlington NE23 9RF (GB)

(74)	Representative: Abnett, Richard Charles
	REDDIE & GROSE 16 Theobalds Road London WC1X 8PL London WC1X 8PL (GB)

(54)	IMPROVEMENTS IN LAMP DRIVE CIRCUITS, AND CINE FILM PROJECTORS OR CAMERAS INCORPORATING THE SAME