Many Systems Use a technique that none seem to have picked up on. Resonant Energy Flows, while in Transit Magnetic Fields Do Work! Magnetic Fields Generate Energy!
We saw it in The Mr Preva Experiment!

We saw it in Floyd Sweets Early Work!

We saw it in Graham Gunderson's MIT:

We saw it in Akula's Work and we have seen it in many more machines!
So what do I mean? Well we all know John Bedini's SG and how the Kick back was used to power a Load. The DC to DC Converter uses the same tech.
We pulse a Coil, L1 in the above schematic, the Coil builds a Magnetic Field, the Magnetic Field Collapses sending Current through the Diode Charging C3.
During this Process, the Magnetic Fields interact, Induction, "Generating" Energy at the same time!
This is something to think about, keep it in mind!
Nearly no losses exist at resonance, it can be very efficient!
Chris