I started comparing the 8XA circuit diagram to the VIC coil and also to Charles Seilers radiant circuits diagram. Charles Seiler's radiant circuit is very similar to the 8XA design, specifically in how the WFC is connected to the power, diode and coil.
The significance of this is that the power source is constantly maintaining a charge on the coil during pulsing operations. I believe this to be a very significant piece to the puzzle of the VIC.
See attached schematic. Notice the placement of the capacitor in the VIC circuit and that it is grounded to the main power ground. In the scope, this now causes the WFC to maintain a charge during pulsing. I have tried this on my real circuit and it does apply. Not only does the charge stay unipolar, but when resonance is achieved the wave form on the WFC is absolutely beautiful, like that in the 8XA image attached. AND during my first test run, I got a significantly better result in HHO production on my larger cell at 20mA across the cell than I usually get.
Both the cap and ground must be there or it will not work. . Note, I am using rain water.
Unfortunately, while tinkering I lost the tune in so I am unable to provide images.
Anyone able to try this out and confirm? Voltage attenuation is also a must at primary input to achieve clean resonance. The cap, per simulation, needs to be probably in the 100nF to 10uF range. May need to try a few different values.
Incidentally, the WFC component is a sub-circuit in iCircuit which in my case is a cap at 25.67nF and a parallel resistor at 80 ohm.
Attached 8XA image from
http://www.powergate.us/HHOParts/SM8XaCircuit.htmTS