Lincoln Electric WELDANPOWER SVM 113-A - Manual (Page 35)

Section E-1 Section E-1
TABLE OF CONTENTS
-THEORY OF OPERATION SECTION-
Theory of Operation ............................................................................................................. Section E
Power Supply Operation ..............................................................................................E-2 - E-3
Engine, Excitation, Rotor and Stator ..............................................................................E-2
Rotor Field Feedback, Auxiliary Power and Engine Idle Control....................................E-3
Auxiliary Power Overcurrent Protection ................................................................................E-3
Weld Winding, Output Rectifier and Choke ....................................................................E-4
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
FIGURE E.1 – WELDANPOWER 125 BLOCK LOGIC DIAGRAM
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