On 2008-02-19, Jim Stewart wrote:
Jon Elson wrote:

The typical TIG HV system has an old-style tesla coil circuit, with a 10
- 20 turn secondary that the torch lead is connected in series with.
This produces a few hundred volts open-circuit and adds it to the torch
open-circuit voltage.

My Thermal Arc will jump a good inch and
a half, which would be about 6500 volts AC.


I always turn my arc starting to a low setting, enough to jump 2 mm or
so. Much more comfortable.

i