Can someone explain the different methods that Plasma Cutters start the arc. IE; Blow back starting, pilot start, hi and low frequency starting, and drag starting. Also there does not seem to be lot to wear out. How does a MOSFET semi-conductor wear out. I think the big factor on life expectancy is not respecting the duty cycle and overheating the unit. What do I know. I don't even own a plasma cutter but I want one badly. I made my own welder but a plasma cutter is more complicated.

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