construction and operation

exploded view alternator

exploded view

alternator operating mode

  • 300mA pre-excitation current flows into the excitation winding of the rotor as far as the ignition is activated (independent excitation)
  • current is induced in the stator by rotation of the rotor.
  • of this current roundabout 2-5 Ampere are flowing back to the excitation winding of the rotor over the regulator (self-excitation)
  • on terminal B+ the main part of the current can be taken as active current.