Coils for Ion

[Bruce Plecan]

Big Snip

 VERY high frequency what-looks-like-noise fuzz on top of what
>is usually refered to as the "arc line", the portion of the waveform
>just after the HV spike has ignited the charge, if you look at it on a
>scope, it will always look like it's a THICK line segment, suggesting
>there's a small very high frequency component superimposed. That's
>apparently the resonance of the plasma itself. Now, in none of the
>patents do I see any mention of using or trying to detect the presence
>of the plasma from it's resonant frequency signature, probably because
>it's much easier to tell if there's a plasma at all (all you really care
>about) from the conductivity of it, but I thot this was an interesting
>insight into why the typical HV IGN trace looks the way it does in that
>"arc line" portion. I'd always wondered why it looked so THICK there. I
>guess this is why. Curious, no?
>
>See, with that lil tidbit he shared with me, and I simply pass along to
>you, you are now prepared to explain EVERY single feature of the HV IGN
>trace on a scope, should you ever be asked to do so at a cocktail party
>or beer bust. The peaks, the ringing, the arc line, all make perfect
>sense; and now the fuzz on the arc line does too!  B)
>Gar
>
The one thing I thought I brought to the dance was tune-up info., and
here a dang EE teaches me about a scope pattern.  I will return to my seat
in the corner and humbly lurk with my CSH on.
Cheers
Bruce