It seems the Truth. CapCoil - Current Amplifier. Source of FE - Two opposite electron's spin waves.
Sch. of experiment not final device
C2 4uF/600V is not resonant capacitor but blocking HF HV capacitor !
Two opposite wounded coils with exact parameters in E.M.-Field cancel each other what they have produced - current production. Remember transformer with two opposite secondary coils. But if one coill differ from the other in parameters (coil wire lenght, cross-section etc) we could see remained voltage in load with big current in it.
In this system is mandatory use blocking capacitor (like in welding machne with oscillator), to block High frequency and High Voltage to don't go in Low Frequency part of circit and kill the process of energy generation.
For remember - SR193 and his current amplifier with opposite wounded coils
ps: Could someone try this experiment and confirm the results. Keep in mind one of coils should have greater wire lenght than the other. I suppose 1,618 times bigger lenght than the other. Or any other lenght ratio.
Aloha