Theory Of Operation - Lincoln Electric RANGER 8 SVM107-B Service Manual

E-4
FIGURE E.4 – WELD WINDING, REACTOR, AND RANGE SWITCH
STARTER ENGINE
FLYWHEEL
ALTERNATOR
BATTERY
OUTPUT
CONTROL
WELD WINDING, REACTOR, AND
RANGE SWITCH
The stator weld winding is connected to the reactor
and range switch. The inductance in the reactor offers
an impedance to current flow.
tapped at various points. As the range switch is ro-
tated, different amounts of reactor coil are brought into
the current path. As more turns of reactor are brought
into the circuit, the more impedance there is to current
flow. Simply stated, the more reactor in the circuit, the
lower the welding current.
If a constant voltage is desired for wire feeding, then
the reactor is bypassed and the range switch is con-
nected to a tap on the stator weld winding to provide
a lower but "stiffer" output voltage.
NOTE: Unshaded areas of Block Logic Diagram are the subject of discussion.

THEORY OF OPERATION

REACTOR
MECHANICAL
ROTATION
ROTOR
SLIP
RINGS
IDLER
SOLENOID
PRINTED
CIRCUT
BOARD
FIELD
CAPACITOR
FIELD
BRIDGE
The reactor coil is
RANGER 8
RANGE
SWITCH
AC
OUTPUT CHOKE
BRIDGE
AC
STATOR
ROTOR
STATOR
115 & 230VAC
RECEPTACLES
E-4
ELECTRODE
TERMINAL
POLARITY
SWITCH
WORK
TERMINAL