FREQUENCY CONTROLLED BALLAST WITH LOOSELY COUPLED TRANSFORMER WITH GAP SHUNT AND METHOD THEREFOR - Patent 1177712

(19)

(11)

EP 1 177 712 A1

(12)

(43)	Date of publication:
	06.02.2002 Bulletin 2002/06

(21)	Application number: 99917642.3

(22)	Date of filing: 21.04.1999

(51)	International Patent Classification (IPC)⁷: H05B 41/26

(86)	International application number:
	PCT/US9908/693

(87)	International publication number:
	WO 0065/884 (02.11.2000 Gazette 2000/44)

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

(71)	Applicant: Merchant & Gould
	Minneapolis, MN 55402-0903 (US)

(72)	Inventor:
	ADAMSON, Hugh, Patrick Boulder, CO 80303 (US)

(74)	Representative: Bohnenberger, Johannes, Dr. et al
	Meissner, Bolte & Partner Postfach 86 06 24 81633 München 81633 München (DE)

(54)	FREQUENCY CONTROLLED BALLAST WITH LOOSELY COUPLED TRANSFORMER WITH GAP SHUNT AND METHOD THEREFOR