Resonance Amplification

[Andy]

Something like here: https://youtu.be/e7lJHIPAxVw?si=rzs9XLsUGBA0eQcE

I want to mention that despite having enough voltage and current to lit up the bulb I can hold both wires connecting the bulb with my bare hands and there is no shock or anything like wires from grid socket.

Power source for ZVS is 20 V 3.2 amp from a laptop charger and of I try to draw more power from my coils the whole system shut down. So, all coils are stack clockwise they, are made identical in size and indeed the distance between them is reflected in power consumption which can be seen on battery meter.
In this way I can power to fully lit 220v 11 watts 50 Hz cfl bulb and is drawing 8.3-8.5 watts at 20.4 V from this arrangement. If i remove wood spacers placed between coils power drawn increase to 10.5-10.8 watts.

The arrangement is: 1 bifilar flat coil with outside and inside wire connected to the + of zvs and inside wire from outer and inner diameter are connected together to the - of zvs. Then I have 2 sets of coils as follow: 1 bifilar identical with the one connected to the zvs, where inner wires are input/output and outer wires are connected in series, 2 more monofilar coils are part of the set and connected in series with the bifilar. Two sets are connected in parallel for output and they are placed 1 set below and 1 set above the bifilar connected to the zvs. There is no galvanic connection between primary and secondaries, they are mutually coupled, inductive coupling.

If I try to flip any set or coil power drawn increase even to 28 watts. So, as long as they do not match same magnetic field orientation they will become inefficient, but still can output enough power.

Also, unfortunately I’ve made a mistake on fabrication and the 2 wires in bifilar do not have same length, but total length is equal for all coils. What means this mistake ? Reduced output power is the first effect ! Why ? Because pulsing, switching take places between 2 different capacitance and inductance … they are very small indeed, but at +12 Mhz resonance corresponding wire length is HUGE ! How do i Know ? Just look at the variation of power and you will understand.

Nice. The capacitor on the breadboard  is 22uF? And what kind of fast diodes did you use?