The generator is powered by the crankshaft through a V-belt drive. In this case, the rotor rotates in the stationary stator winding at approximately twice the speed relative to the motor.
The current flows through the excitation winding through the carbon brushes and slip rings. This creates a magnetic field. The position of the magnetic field in relation to the stator winding is constantly changing in accordance with the rotation of the rotor. This produces alternating current.
Since the battery can only be charged with DC current, the rectifier on the diode board converts the AC to DC. The voltage regulator changes the value of the charge current by turning on and off the excitation winding in accordance with the degree of charge of the battery. At the same time, the voltage regulator keeps the operating voltage at a constant value of about 14 V, regardless of the speed.
Caution: Unlike DC generators, never run an alternator without a battery.
1 Belt pulley
2 Fan impeller
3 Front of the body
4 Drive bearing
5 Lid
6 Key
7 Rotor
8 Deep groove ball bearing rear
9 O-ring
10 Stator
11 Diode board
12 Rear case
13 Voltage regulator
14 Carbon brush set
15 RFI filter capacitor