Re: Theoretical understanding

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

Original poster: Ed Phillips <evp-at-pacbell-dot-net> 

"Precisely, and, because the primary and secondary are tuned to slightly
different frequencies, the process is not perfectly even, but beats back
and forth, creating the "notches"

Best mechanical example....   Take a piece of string about as long as
your
arm and string it between the backs of two chairs (or other similar
supports).  Construct two pendulums with string and a small weight (like
a
washer)about 2ft (60cm) long.  Hang the two pendulums from the string
between the chairs, about a foot (30cm) apart.  Start one swinging (but
not
the other).  Watch...

The energy stored in one pendulmn will transfer to the other and then
back,
periodically.

(unless you were really exact and managed to make each pendulmn
precisely
the same, and the connections were perfectly symmetrical, etc....)"

	Even then.  Two identical coupled tuned circuits have two resonant
frequencies.  In a TC, quenching opens the primary and allows the
secondary to ring at its own resonant frequency which may well be that
to which the primary is tuned.

	The "beat" phenomenon occurs whenever two sine waves of different
frequency are summed; peaks at times when both waves add up in phase,
minima when they add up out of phase.  The higher the coupling the
farther apart the peaks until, when the coupling coefficient is unity,
one peak frequency goes to 0 and the other to light!

Ed



Ed