Operation CHARM: Car repair manuals for everyone.

Description

The Generator provides voltage to operate the vehicle's electrical system and to charge its battery. A magnetic filed is created when current flows through the Rotor. This field rotates as the Rotor is driven by the engine, creating an AC voltage in the Stator windings. The AC voltage is converted to DC by the rectifier bridge and is supplied to the electrical system at the battery terminal.
When the Ignition Switch is placed in RUN, voltage is supplied to generator terminals L, turning on the Regulator. The Generator's Regulator uses digital techniques to supply current to the Rotor, thereby controlling the output voltage. The Rotor current is proportional to the electrical pulse width supplied by the Regulator. When the engine is started, the Regulator senses Generator rotation by detecting AC voltage at the stator through an internal wire. Once the engine is running, the Regulator varies the field current by controlling the pulse width. This regulates the Generator output voltage for proper battery charging and electrical system operation.
The digital regulator's solid-state light driver provides a ground path to light the Charge Indicator. The light driver turns on an indicator whenever undervoltage, overvoltage or a stopped generator is detected.