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OUTPUT BRIDGE, CHOKE,
POLARITY SWITCH, CV
CONTACTOR 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 to the output terminals.
If AC output is selected, then the current path is from
the stator weld winding through the reactor, range
switch, and polarity switch to the output terminals. If
a DC output is called for, then the current path is
through the output rectifier bridge, where the AC volt-
age is rectified to a DC voltage, and then to the choke,
where the DC output is filtered. The filtered DC current
path is through the polarity switch to the output termi-
nals.
When a CV (constant voltage) is desired, the reactor is
passed by. The range switch applies a lower AC volt-
age 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 CV output contactor to the output
terminals. The CV output contactor provides for an
electrically “cold” electrode when in the constant volt-
age mode.
THEORY OF OPERATION
E-5 E-5
RANGER 10-LX
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FIGURE E.5 – OUTPUT BRIDGE, CAPACITOR, CHOKE, POLARITY SWITCH, CV CONTACTOR AND
OUTPUT TERMINALS
NOTE: Unshaded areas of Block Logic Diagram are the subject of discussion.
RANGE
SWITCH
REACTOR
STATOR
ROTOR
MECHANICAL
ROTATION
ENGINE
GLOW PLUGS
BATTERY
6 PIN
AMPHENOL
14 PIN
AMPHENOL
OUTPUT
CONTROL
REMOTE
SWITCH
BY-PASS
BOARD
ENGINE
PROTECTION
RELAY
SHUTDOWN
SOLENOID
STARTER
MOTOR
ALTERNATOR
REGULATOR
IDLER
SOLENOID
PRINTED
CIRCUIT
BOARD
FIELD
CAPACITOR
FIELD
BRIDGE
115 & 230VAC
RECEPTACLES
AC
AC
OUTPUT
RECTIFIER
BRIDGE
CAPACITORS
PART OF
RANGE
SWITCH
CHOKE
POLARITY
SWITCH
WORK
TERMINAL
ELECTRODE
TERMINAL
CONTACTOR CLOSURE
ROTOR
SLIP
RINGS
42VAC
115VAC
cv
output
contactor
CONTACTOR CLOSURE