Transformer core, particularly for supplying power to cold-cathode discharge lamps

(19)

(11)

EP 1 176 614 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	23.10.2002 Bulletin 2002/43

(43)	Date of publication A2:
	30.01.2002 Bulletin 2002/05

(21)	Application number: 01116658.4

(22)	Date of filing: 13.07.2001

(51)	International Patent Classification (IPC)⁷: H01F 27/24

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

(30)

Priority:

28.07.2000 IT TV000087

(71)	Applicant: Siet Societá Italiana Elettronica Trasformatori S.r.l.
	31057 Silea (IT)

(72)	Inventors:
	Favotto, Virginio 31100 Treviso (IT) Brollo, Andrea 31044 Montebelluna (prov. of Treviso) (IT)

(74)	Representative: Modiano, Guido, Dr.-Ing. et al
	Modiano & Associati SpA Via Meravigli, 16 20123 Milano 20123 Milano (IT)

(54)	Transformer core, particularly for supplying power to cold-cathode discharge lamps

(57) A core for electromagnetic transformers, particularly for supplying power to cold-cathode discharge lamps, which is constituted by a plurality of stacked laminations (52), which are in turn constituted by a first central I-shaped element (53) with which two second elements (54a,54b) are laterally associated; the second elements are comb-shaped, so as to form two outer wings (58a,58b) and two inner wings (60a,60b). Each pair of outer wings can be appropriately associated with the free ends of the first central I-shaped element, constituting a so-called shell-type or ironclad magnetic circuit.

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