(19)

(11)

EP 0 712 532 A1

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(43) Date of publication: 22.05.1996 Bulletin 1996/21 (21) Application number: 95907498.0 (22) Date of filing: 05.08.1994

(51) International Patent Classification (IPC):  H01F 41/ 00( . ) H01F 1/ 055( . ) C01F 1/ 00( . ) H01F 1/ 059( . ) (86) International application number: PCT/SI1994/000014 (87) International publication number: WO 1995/004996 (16.02.1995 Gazette 1995/08)

(84) Designated Contracting States: CH DE DK FR GB LI NL (30) Priority: 06.08.1993 SI 19930000422 (71) Applicant: INSTITUT JOZEF STEFAN SI-61000 Ljubljana (SI)	(72) Inventors: SAJE, Boris 61000 Ljubljana (SI) KOBE, BESENICAR, SPOMENKA 61000 Ljubljana (SI) EDWARDS PLATTS, Adrian Birmingham B29 7JA (GB) HARRIS, Ivor, Rex Birmingham B29 7JA (GB) (74) Representative: Rackette, Karl, Dipl.-Phys. Dr.-Ing  Postfach 1310 D-79013 Freiburg D-79013 Freiburg (DE)