If the Vic transformer only provides charging pulses to the electrodes, pulses can be generated electronically. Doesn't work. When the choke coils are on the same core as the primary, they are also secondaries. With the main secondary wired to a choke secondary, the output has two waveforms, so that makes a standing wave. Couldn't an op amp mixer provide the correct signal to a stand alone choke?
If two frequencies are slightly different, the standing wave will walk. A wave sweeping across the water is the same as the water sweeping across a stationary wave.