Original poster: Vardan <vardan01@xxxxxxxxxxxxxxxxxxxxxxx>
Hi Bob,
I think that the theory is that racing arcs are caused by a
reflection of a third harmonic bouncing back from the top of the
coil on the first cycle. Paul or Dmitry can confirm that. Having
the top third of the coil reverse wound is supposed to squash that
3rd harmonic reflection and perhaps cure the racing arc. At least
that is how I understand it.
I imagine there is a "perfect" place for the reverse winding to
begin other that the exact 2/3 point up the coil. But something
like Paul's program would be needed to find that. The reversed
windings would change the inductance quite a bit though so it would
be a little hard to make a direct comparison. But if the idea holds
true, the difference in eliminating the racing arcs should be dramatic.
Cheers,
Terry