If I recall correctly, Tesla himself already noticed that a strong spark
"of high energy" would often occur right after he had disconnected
a DC lead with a significant voltage... If I'm not mistaken one of his
first remarks about "radiant energy" was in this context too
(something about the source of this excess energy being the
sea of radiant energy or something like that?).
Could this be the "negative energy pulse" Bearden talks about,
the "currentless potential spike" that is claimed to be the
"free energy" mechanism in the Bedini motors and circuits?
With the trick in all these Bedini-like motors apparently being
rapid and perfectly timed switching of connections, and this
"galvanic current" depending on whether or not the current flow
is first intiated or if it is recently interrupted,
it sounds suspiciously similar...
Except of course for the fact that this described "galvanic current
in iron" is observed in iron wire, and I don't know many
Bedini-type motors or circuits that use an iron wire...
Then again, it was an 1800s text, so it may just be that the same
phenomenon occurs in other conductors as well.
In fact, looking at the hysterisis curves, I would say that
this phenomenon seems remarkably similar to the effect
called hysterisis...
So perhaps there's nothing new going on at all, and we're
just back at the observation that there is "back emf"
and that we may use that if we design our setups
and circuits accordingly.
And if that is so, then we're "simply" back in the same
street as Bedini, Gray, Kron and Sweet.
That is, using circuits designed to utilise the back emf
that is created in the "normal" part of the circuitry,
to lower the power use of that "normal" circuitry.
Enter Kron's "open path" circuitry and his use of a
"second circuit" connected to the primary circuit?