An electro-magnetic device comprising: a first winding comprising flat wire, the first winding having an opening defining a first diameter; a second winding comprising flat wire, the second winding having an opening defining a second diameter, the second winding sized to be nested within the opening of the first winding, the first winding and the second winding forming a first winding set having a first flat surface and a second flat surface opposite the first flat surface; a third winding (70, 3010) comprising wire, the third winding having an opening defining a third diameter; a fourth winding (60, 3010) comprising wire, the fourth winding (60, 3010) having an opening defining a fourth diameter, the fourth winding (60, 3010) sized to be nested within the opening of the third winding (70, 3010), the third winding (70, 3010) and the fourth winding (60, 3010) forming a second winding set having a first surface and a second surface opposite the first surface; wherein the first winding set is positioned adjacent to the second winding set, and wherein the first flat surface of the first winding set is adjacent to and facing the first surface or the second surface of the second winding set; an insulator positioned between the first flat surface of the first winding set and the first surface or the second surface of the second winding set, the insulator configured to provide electrical isolation or thermal isolation between the first winding set and the second winding set; wherein the first winding set and the second winding set are aligned along a vertical axis in a co-columnar configuration, wherein the first winding set is arranged with at least a portion of its flat surfaces substantially perpendicular to the vertical axis, and wherein the first winding has a first terminal end and an opposite second terminal end (56, 57), wherein at least one of the terminal ends is twisted and oriented approximately 90 degrees from a plane of one of the flat surfaces of the first winding set and configured to be wound around a connection pin (30a-h), which is also oriented at approximately 90 degrees from a plane of one of the flat surfaces of the first winding set. a first winding comprising flat wire, the first winding having an opening defining a first diameter; a second winding comprising flat wire, the second winding having an opening defining a second diameter, the second winding sized to be nested within the opening of the first winding, the first winding and the second winding forming a first winding set having a first flat surface and a second flat surface opposite the first flat surface; a third winding (70, 3010) comprising wire, the third winding having an opening defining a third diameter; a fourth winding (60, 3010) comprising wire, the fourth winding (60, 3010) having an opening defining a fourth diameter, the fourth winding (60, 3010) sized to be nested within the opening of the third winding (70, 3010), the third winding (70, 3010) and the fourth winding (60, 3010) forming a second winding set having a first surface and a second surface opposite the first surface; wherein the first winding set is positioned adjacent to the second winding set, and wherein the first flat surface of the first winding set is adjacent to and facing the first surface or the second surface of the second winding set; an insulator positioned between the first flat surface of the first winding set and the first surface or the second surface of the second winding set, the insulator configured to provide electrical isolation or thermal isolation between the first winding set and the second winding set; wherein the first winding set and the second winding set are aligned along a vertical axis in a co-columnar configuration, wherein the first winding set is arranged with at least a portion of its flat surfaces substantially perpendicular to the vertical axis, and wherein the first winding has a first terminal end and an opposite second terminal end (56, 57), wherein at least one of the terminal ends is twisted and oriented approximately 90 degrees from a plane of one of the flat surfaces of the first winding set and configured to be wound around a connection pin (30a-h), which is also oriented at approximately 90 degrees from a plane of one of the flat surfaces of the first winding set.