Figure 13-16. Thermostatic Control of Third-Brush Generator.
This weakens the total field strength, keeping the
The series-field winding is divided so that the generator
generator output down for the delivery of a reasonable
output is changed according to the load.
b. With lights off, no current flows through one part of
c. When the lighting switch is closed, the entire
the series field (1, fig. 13-17). The current going to the
lighting current flows through section 1 of the series field
battery flows through the remainder of the series field (2,
in the same direction as the shunt
fig. 13-17) in the opposite direction to the shunt-field
Figure 13-17. Split-Series Field Regulation.