electric motor rotor with permanent magnet, copper wire inductors and metal ball bearing

alternating armature background ball bearing black closeup coil commutated commutation component computer current dark design detail direct electric electrical electricity electro electromagnetic electromechanics electromotor electronic electronically electrotechnology engine fan ferrite ferromagnetic field hall hardware induction inductor industry inside machine macro magnet magnetic mechanic mechanism metal metallic motor nobody nopeople open part permanent power red repair rolling rotate rotor round sensor service sheet spare stator steel switch technical technology transformer winding wire yellow