Re: Tesla Coil RF Transmitter

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Ed Phillips <evp@xxxxxxxxxxx>

"According to theory, the transmitter IS coupled to the distant
receiving transformer.  The propagation of electrical energy between
a Tesla-coil transmitter and a Tesla receiving transformer is by
electrical conduction between the ground terminals, and direct and
indirect electrostatic induction between their respective elevated
terminals.  For an ultra-high-power type-one system the coupling
between the two elevated terminals is by electrical conduction through
plasma."

	According to the theory yes.  According to fact the coupling is
immeasurably small.  As for the conducting plasma, see below.


"In operation the elevated terminal of a Tesla-coil transmitter
functions as one plate of a capacitor.  In opposition to this
terminal is every other electrically conducting body to which it is
electrically connected, including the earth and the receiver's
elevated terminal.  The transmitter's elevated terminal serves two
purposes.  First, it acts as a charge reservoir in opposition to the
earth's surface in the immediate vicinity of the
transmitter.  Second, it is one of two capacitor plates, the other
plate being the elevated terminal of the receiving facility.  In an
ultra-high-power Tesla-coil RF transmission-reception system these
two capacitor plates act as high voltage discharge terminals for the
formation of capacitively coupled discharge plasma with
interconnection taking place through the upper level atmosphere."

	You omit the enormous capacitance of the "conducting plasma", which is
connected to the transmitter.  It is measured in FARADS, not nano FARADS
or pico FARADS.  The tesla coil transmitter must supply the current and
power to elevate that plasma to the operating voltage.  Published data
says that capacitance is of the order of 0.25 FARAD.

Ed

Ed