EPCOS
变压器铁芯, 环形, 环形, 40mm x 24mm x 16mm, N30, B64290, 96.29 mm, 125.3 mm2
FERROXCUBE
变压器铁芯, 环形, 环形, TN29, 3E25, 73.2 mm, 73.9 mm2
铁氧体磁芯, 环形