Many good books are available which provide a rigorous and comprehensive treatment of electric motors. These serve the needs of academia, and are fine for both would-be and accomplished specialists. There are, however, numerous technologists and practitioners of the applied sciences who may not readily derive benefit from such treatises; for instance, engineers, electronics designers, intelligent hobbyists and experimenters. Although such people generally possess more-than-adequate technical backgrounds, they often feel ill at ease when working with electric motors. Included in their company are electrical engineers for the simple reason that their training probably focused more on software, programming and computer logic than on rotating machinery.