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Portable Generator Familiarization & Troubleshooting Guide
Section 2 • Generator Components & Systems
The rotor may be considered a permanent magnet since
some residual magnetism is always present.The stator has
two coils of wire. One is called an "excitation winding" and
the other is called the "power winding." Output current
(AC) from the excitation winding is changed to direct
current (DC) by the bridge rectifier and is then delivered to
the rotor windings via the brushes and slip rings,
strengthening the magnetic field.
Voltage Regulator
There are three variations of the voltage regulator shown in
Figure 2.51.
The regulator itself is the same for each one. Only the
connector harness is different.
Figure 2.51 — Voltage Regulator
Gain Pot
Used on many of our portable generators produced in the
late 1980's, a black square box that has six terminals is
retained in a slot of the generator's rear bearing carrier
(Figure 2.52).
Voltage Adjust Pot
Figure 2.52 — Voltage Regulator
A metal square box with six terminals is found in the
control panel of the generators used on models produced in
the early 1990's (Figure 2.53).
Figure 2.53 — Voltage Regulator
37
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