I"m considering watching for a TIG welder and note that there are different types of high frequency starting.
It looks like the lift to start method is on less expensive machines. I assume that you tap the tungsten on the work and then lift to get it started. Does that contaminate the tungsten?
Can lift to start machines use remote amperage foot pedal or thumb controls?
What's the disadvantage of a lift start machine compared to whatever the better machines have?
Is there high frequency at all on the scratch start machines?
On the better machines, I see that there's HF on start only and continuous HF - I guess the latter is only on older machines, right?. If you're down in the cellar or out in the garage is HF likely to interfere with electronics say 50 ft away?
Ignoring interference, is there any disadvantage to a machine that has continuous HF?
What's the purpose of a pulser?
TIA RWL