The AC voltage developed in the field winding is fed to
the full wave rectifier bridge. The DC output of the
bridge is filtered by the field capacitor and controlled
by the output rheostat. This filtered and controlled
feedback voltage is fed to the rotor winding via the
brush and slip ring configuration. As the feedback
voltage is increased or decreased, the outputs of the
weld and auxiliary windings are likewise increased or
decreased.

The hour meter is also powered by the field rectifier
bridge. When field voltage is present, the hour meter
will run.

When full field voltage is applied to the rotor and the
engine is running at high speed (3700 RPM), a 230VAC
voltage is developed in the stator auxiliary winding.
This winding is tapped. Each half of this winding pro-
vides 115 VAC to each side of the 115V duplex recep-
tacle. The two voltages (115VAC and 230VAC) are

connected to the appropriate receptacles and offer
4500 watts (total) of AC power.

The idler solenoid is mechanically connected to the
engine throttle linkage. The field winding provides
power for the idler P.C. board and also to the idler
solenoid, which brings the engine to a low idle state.
When output current, either weld or auxiliary, is sensed
by the current transformer, the P.C. board deactivates
the idler solenoid, and the engine returns to high RPM.

AUXILIARY POWER
OVERCURRENT PROTECTION

The 4500 watt auxiliary power winding and circuitry is
protected from an overload condition by two 20 amp
circuit breakers. The circuit breakers are located
below the output receptacles. They can be manually
reset.

ENGINE

MECHANICAL

ROTATION

STATOR

ROTOR

STATOR

CHOKE

ROTOR
SLIP

RINGS

CAPACITORS

IDLER

SOLENOID

IDLER

P.C. BOARD

IDLE

SWITCH

RHEOSTAT

HOUR

METER

115 AND 230 VAC

RECEPTACLES

FIELD

RECTIFIER

BRIDGE

MAGNETO

OUTPUT

RECTIFIER

BRIDGE

POSITIVE

OUTPUT

TERMINAL

NEGATIVE

OUTPUT

TERMINAL

CURRENT

TRANSFORMER

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