9-5 Sport Wagon (9600) L4-2.3L Turbo (B235) (2003)
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The voltage is fed from the ignition switch via the indicator lamp to terminal D+ on the generator and from there to the rotor's excitation winding and
then grounded via the regulator.
While the current is passing through the rotor, a magnetic field is formed around it. When the engine is started and the rotor starts to rotate, the magnetic
field rotates as well and alternating voltage is generated in the stator winding. The alternating voltage is rectified when it passes through the diodes and is
then fed to the car's electrical system. The voltage obtained from the stator winding also passes via the excitation rectifiers to the voltage regulator and
affects its operation. When the voltage exceeds 14 V, the voltage regulator reduces the current through the excitation winding. The strength of the
magnetic field is reduced as is the alternating voltage in the stator winding.
The charging indicator lamp is also influenced by the voltage from the stator winding via terminal D+ on the regulator. The difference in voltage
between the two sides of the charging indicator lamp levels out and the lamp goes out. In this way, an indication is obtained that the generator is
charging.
