Section e theory of operation, Theory of operation – Lincoln Electric NA-5S User Manual
Page 48
E-1
THEORY OF OPERATION
E-1
NA-5
TABLE OF CONTENTS
-THEORY OF OPERATION SECTION-
Theory of Operation ..................................................................................................................Section E
General Description..........................................................................................................................E-2
Input Power Circuits .........................................................................................................................E-2
Power and Voltage Boards...............................................................................................................E-3
Control, Logic and Procedure Boards ..............................................................................................E-4
Optional start, Crater Fill and Weld Timer Boards............................................................................E-5
SCR Operation .................................................................................................................................E-6