> but then
>>in the secondary we`ll have the undamped oscillations and then
>>Vpeak=sqrt(2)*Vrms - i spoke just about this :-)
> True for constant amplitude sine wave. But even in a lossless system
> (above), the secondary rings up as the primary rings down so the
> output sine wave does not become constant amplitude until the spark
> has quenced. At this point in time, there is no current flow in the
> primary (other than charging current) so nothing to compare (equation
> doesn't apply).
but rms doesn`t fall immediately to zero, as V or I becomes zero - coz
rms is the average value in a certain time period, so i can`t agree
with "so nothing to compare (equation doesn't apply)". coz even
when you use Vpeak instead Vrms and compare the Esec with Epri, Epri=0
when Esec=max - "nothing to compare"? :-)