Lincoln Electric SVM123-A Welding System User Manual


 
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E-1
THEORY OF OPERATION
E-1
IDEALARC DC-1000
TABLE OF CONTENTS
-THEORY OF OPERATION SECTION-
THEORY OF OPERATION SECTION. ................................................................Section E
General Description............................................................................................E-2
Input Line Voltage, Contactor, and Main Transformer .......................................E-2
Output Rectification, Control, and Feedback......................................................E-3
Protection Devices and Circuits (Contactor Hold-In)..........................................E-4
SCR Operation. ..................................................................................................E-5
FIGURE E.1 Block Logic Diagram