Table Of Contents - Lincoln Electric 11694 Service Manual

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POWER WAVE
S350
- THEORY OF OPERATION SECTION -
Theory Of Operation ............................................................................................................ Section E
Main Input Switch, Input Rectifier, Soft Start/Input Relay, DC Link Capacitor, Buck-Boost Power
Factor Correction Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Planar Transformer, Output Rectification And Filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
DC Bus Board And Optional User Interface Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Machine Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Thermal Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Protective Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Over Current Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

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THEORY OF OPERATION
1

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