1.1 This standard specifics dimensional and constructional characteristics for toroidal cores wound from strips of magnetically soft steel or alloy having a thickness between 0·003 and 0·35 mm.
1.1.1 It includes standard ranges of main dimensions, values for strip thickness, marking and packing.
1.2 It does not cover dimensions of toroidal cores made from magnetic oxides or ferromagnetic powder which are given in IS : 7930-1976〓.
IS 9344-1979 history
1980IS 9344-1979 Dimensions of soft magnetic material toroidal tape wound cores