Alternator & Regulator: Description

Hitachi and Mitsubishi alternators are conventional 3-phase, self-rectifying alternators. Three positive and 3 negative diodes are used to rectify current. All models are equipped with Integrated Circuit (IC) voltage regulators.

On G20 and M30 models, a diode on the charge indicator light circuit monitors alternating voltage at the stator. Charge indicator light remains off when monitored voltage and charging voltage are equal.