Re: TWO STAGE COILS?
> Considering the technology of that time, the circuit is more
> probably an induction coil charging a capacitor, followed by
> a kind of Tesla coil. The capacitors for the second stage were
> usually banks of Leyden jars, or big glass plate capacitors
> insulated with paraffin or wax.
The schematics show the first circuit being driven from either a
transformer off the AC mains or, alternately, from a DC source with
series inductance. There is no "induction coil" in the circuit, but two
coupled spark oscillators.