I'm not sure, I don't want to rule it out though. The vic resonance is something
That really gets me. I tend to think it's the chokes self resonance, which forms a
parallel tank that would limit current and provide an ac frequency, but the ac should
be rectified by the diode and any series component (i.e. The water cap) would only
get the dc.
Bottom line is, there exists ac in this circuit, how it gets to the water capacitor
Is my question.