(19)

(11)

EP 0 042 382 A1

(12)

(43) Date of publication: 30.12.1981 Bulletin 1981/52 (21) Application number: 80901667.0 (22) Date of filing: 10.09.1980

(51) International Patent Classification (IPC):  H02M 1/ 084( . ) H02M 7/ 521( . ) (86) International application number: PCT/SE1980/000222 (87) International publication number: WO 1981/000936 (02.04.1981 Gazette 1981/08)

(84) Designated Contracting States: AT CH DE FR GB LI LU NL (30) Priority: 25.09.1979 SE 19790007945 (71) Applicant: NYSTRÖM, Stefan S-602 36 Norrköping (SE)	(72) Inventor: NYSTRÖM, Stefan S-602 36 Norrköping (SE)