RE: TC Primary Q Voltage Magnification

["Lau, Gary" <Gary.Lau-at-xxxxxxxxxx> (by way of Terry Fritz <twftesla-at-xxxxxxxxxx>)]

I don't believe there is any such magnification in spark gap-based coils.
When the gap fires, the voltage across the tank circuit is at it's peak, and
diminishes from that point on.  Q-based magnification is relevant only when
there is a continuous addition of energy to the circuit, as in the case of a
vacuum tube or other CW-type coils.  With disruptive coils, the energy in
the tank has diminished to zero before the tank cap has begun to recharge.
Just look at any of the primary voltage scope traces on various web sites.

Gary Lau
Waltham, MA USA

>Original poster: "tesla" <tesla-at-paradise-dot-net.nz> 
>
>Team
>
>Would I be correct in thinking that when the SG fires the equivalent
circuit
>of the primary is a series resonant cct. If so the potential for Q voltage
>magnification would need to be considered particularly in relation to the
>voltage across the cap.
>
>The loaded Q is probably low but even then the effect on the total voltage
>present is significant ??
>
>Tnx
>Ted