I believe that there must be a sweet spot zone in the choke on the negative side of the VIC whereby the impedance is high enough to allow the voltage wave to pass but at the same time restrict current suffficiently to prevent it from leaving the choke. This becomes possible since the voltage leads the current. However, this would need to be tuned for each implementation as the step up never be exactly the same. Too high impedance and the voltage wave is also restricted. Too low impedance and the current isn't restricted enough.
There are obviously more variables than just the choke involved to accomplish this. The step up transformer itself obviously is a factor as the amount of current is influenced by the ratio of the transformer's secondary windings.
TS
