Various the level of latest from the stationary exciter area coils may differ the 3-phase output with the exciter. This output is rectified by a rotating rectifier assembly mounted around the rotor, as well as resultant DC provides the rotating field of the leading alternator and that's why alternator output. https://hejiannuojinautopartsco14678.blogaritma.com/33666687/alternator-parts-an-overview