Free energy is the ability to contact the aetheric (imaginary; square root of negative one) substrate (akasha) of space which eliminates (by substitution) the need for implementing an electrical ground for circuit design. https://tinyurl.com/sub-falstad
Konzen provided the first pair of regulated circuit simulations, rendered in Micro-Cap’s version #12 of SPICE, which have been blatantly remarkable (IMO).
... to avoid my prior method of regulation which transformed the nice, smooth sine waves (of the original Konzen circuit) into spiked surges due to my use of switches.