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OUTPUT BRIDGE, CHOKE,
POLARITY SWITCH, AND OUTPUT
TERMINALS
The AC voltage developed in the stator weld winding
is delivered, through the reactor and range switch, to
the output bridge and polarity switch. Depending
upon the setting of the polarity switch, either AC volt-
age or DC voltage is delivered through the output con-
tactor, which is activated by the printed circuit board,
to the output terminals. If AC output is selected, then
the current path is from the stator weld winding
through the reactor, range switch, polarity switch and
output contactor to the output terminals. If a DC out-
put is called for, then the current path is through the
output bridge, where the AC voltage is rectified to a
DC voltage, and then to the choke, where the DC out-
put is filtered. The filtered DC current path is through
the polarity switch and output contactor and then on
to the output terminals.
If a CV (constant voltage) mode is desired, the reactor
is passed by. The range switch applies a lower AC
voltage to the rectifier bridge. The DC output of the
bridge is filtered and “stiffened” by the capacitors.
This lower but “stiffer” DC output is passed through
the choke, polarity switch, and contactor and then on
to the output terminals.
THEORY OF OPERATION
E-5 E-5
RANGER 9 RANGER 9
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WORK
TERMINAL
OUTPUT
CONTACTOR
ELECTRODE
TERMINAL
POLARITY
SWITCH
CHOKE
PART OF
RANGE
SWITCH
CAPACITORS
OUTPUT
RECTIFIER
BRIDGE
AC
AC
RANGE
SWITCH
REACTOR
STATOR
ROTOR
MECHANICAL
ROTATION
ROTOR
SLIP
RINGS
IDLER
SOLENOID
ENGINE
STARTER
BATTERY
FLYWHEEL
ALTERNATOR
PRINTER
CIRCUT
BOARD
FIELD
CAPACITOR
115 & 230VAC
RECEPTACLES
FIELD
BRIDGE
CONTACTOR CLOSURE
BY-PASS
BOARD
CONTACTOR CLOSURE
REMOTE
SWITCH
OUTPUT
CONTROL
6 PIN
AMPHENOL
14 PIN
AMPHENOL
115VAC
42VAC
FIGURE E.5
OUTPUT BRIDGE, CAPACITOR, CHOKE, POLARITY SWITCH, CONTACTOR AND OUTPUT TERMINALS
NOTE: Unshaded areas of Block Logic Diagram are the subject of discussion.