Lincoln Electric SVM 106-A service manual Theory of Operation Section

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TABLE OF CONTENTS	Section E
- THEORY OF OPERATION SECTION -
Theory of Operation	Section E
General	E-2
Control Circuit Operation	E-2
Power Input Circuits	E-2
Trigger Circuit	E-3
Control Relay Circuit	E-4
Auxiliary Circuits	E-5
Protective Circuits	E-6
Overload Protection	E-6
Current Limiting Circuit	E-6
Ground Lead Protection	E-7
SCR Operation	E-7

LN-7 GMA WIRE FEEDER