The next study of the Doc's circuits will be that of the polyphase transformer as pictured here

A note from the Doc:
The 4-winding transformer depends on what I call "Poly-Phasing", the capture of external (virtual) energy during a critical phase of the trigger pulse.
The circuit clings to the energy around it in such a way that it can be absorbed by its air-core coil, resulting in an overall increase in kinetic energy.

Two air coils are used to light a 12 watt incandescent lamp.

This circuit variation has an input power of 8.25 watts and supplies 12 watts to the bulb as shown and incurs a loss in the conversion transformer of approximately 6 watts.
The total power produced by this circuit is therefore 18.11 watts for an input of 8.25 watts.
The power gain is therefore 18.11 / 8.25 = 2.194
Jagau