Method of and device for providing an electrical signal in an ignition system

(19)

(11)

EP 0 044 744 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	10.03.1982 Bulletin 1982/10

(43)	Date of publication A2:
	27.01.1982 Bulletin 1982/04

(21)	Application number: 81303345

(22)	Date of filing: 22.07.1981

(84)	Designated Contracting States:
	AT BE CH DE FR GB IT LI NL SE

(30)

Priority:

22.07.1980 GB 8023944

(71)	Applicant: EDA Sparkrite Limited
	()

(72)	Inventor:
	Gunton, Bruce Stanley ()

(54)	Method of and device for providing an electrical signal in an ignition system

(57) The firing of a spark plug of an internal combustion engine is triggered by a Hall effect device (11) mounted adjacent to an annular magnet (10) which is rotated by the engine. On a peripheral surface (15) of the magnet, are adjacent magnetic pole faces of opposite polarity.

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