Re: 1/4 wave theory/cite the variance?

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Ed Phillips by way of Terry Fritz <twftesla-at-qwest-dot-net>" <evp-at-pacbell-dot-net>

Tesla list wrote:

> >> The arguments being brought up in favor of an adjustment to quarter wave
> >> are based on tightly wound coils with self-capacitance and tightly
> >> coupled inductance between the wires.
> 
> >> If you'll look carefully at all the pictures in CSN, you will see that all
> >> of Tesla's coils are space wound, thus eliminating

	The self-capacitance of inductors is a primarily function of their
length and diameter, with turn spacing and the turn-to-turn capacitance
having very little effect.  If you calculate the self-resonant frequency
of the inductance of a single turn tuned with the turn-to-turn
capacitance of a couple of adjacent wires you'll see it is extremely
high.


> >> The 1/4 wave resonant frequency of a wire, when wound into a
> >> solenoid, is typically more than 50% higher than that of the
> >> straight line value.

	What do you mean by the "quarter wave frequency of a solenoid?

Ed