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Section E | TABLE OF CONTENTS | Section E |
| - THEORY OF OPERATION SECTION - |
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Theory of Operation | Section E |
Input Power Circuit | |
Input Line Voltage | |
Main Transformer | |
Voltage Selector Switch | |
Baffle Mounted Diode Bridge | |
Control Circuits | |
Output Rectification, Contactor & Control Boards | |
Optional Circuits | |
Control Board, Gun Trigger, & Wire Drive Motor | |
Protective Devices & Circuits | |
Thermal Overload Protection | |
Wirefeed Overload Protection |
FIGURE E.1 THEORY OF OPERATION BLOCK DIAGRAM
WIRE
GASSPEED
SOLENOIDCONTROL
FAN
MOTOR
LINE
SWITCH
RECTIFIER
DIODE
BRIDGE
VAC28TAP SELECTOR SWITCH
CONTROL BOARD
CONTACTOR | CONTROL |
CONTACTOR
WIRE
DRIVE
MOTOR
TACH
GUN TRIGGER
OUTPUT DIODE
BRIDGE
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OUTPUT
CHOKE
OUTPUT
CAPACITORS
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TRANSFORMER | OUTPUT BRIDGE | ||||||
THERMOSTAT | THERMOSTAT | ||||||
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POSITIVE
TERMINAL
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GUN
ASSEMBLY
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RECONNECT
PANEL
MAIN | NEGATIVE | |
TRANSFORMER | ||
TERMINAL | ||
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