Figure 7.
Simplified carbon pile regulator diagram.
(2) When current flows through the operating coil, the coil exerts a
magnetic pull on the armature and decreases the pressure applied to the carbon
pile. The magnetic pull exerted by the operating coil is proportional to the
current flowing through it.
(a) Thus, as the output of the generator increases, a larger current
will flow in the operating coil and the pressure exerted by the armature on the