HITACHI Regulator: Description

Regulator system consist of a voltage regulator and a charge relay. The voltage regulator has 2 sets of contact points to control alternator voltage. An armature plate placed between the 2 sets of contacts moves upward, downward, or vibrates. The lower contacts, when closed, complete the field circuit direct to ground. The upper contacts complete the field circuit to ground when closed, through a resistance (field coil), causing the alternator to charge. The charge relay is similar in construction to the voltage regulator. When upper contacts are closed, the ignition warning light goes on.