Re: 7.1Hz, Frequency variation and Q

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Ed Phillips <evp@xxxxxxxxxxx>

" >      Not mixing but just simple vector addition.  Every once in a
while the
 > rotating vectors representing the two signals add up in phase and a
peak
 > occurs.

But don't forget that this isn't generalized theory, this is about
driving
the 8Hz earth resonance (no arc discharges occurring, 8Hz frequency
difference, 50KHz operating band or similar.)  If we connect two TC main
terminals to the same antenna tower, or to the same x-ray beam aimed
upwards, they're not just going to add up, since one TC secondary sees
the
other one as an off-resonance waveguide connected to ground.  Or are you
imagining using two resistors in series with the TC outputs to act as a
summing network?"

	I didn't see any mention of driving the earth's resonances in the post
I replied to.  The point was that the addition of two (~equal) sinusoids
will produce beats at the period of the difference in the frequency of
the two sinusoids.  In the case Tesla mentions he was feeding two
signals at different frequencies (but both presumably within the
bandwidth of the resonance) into the primary of a coil and observing the
phenomena of the discharge as he changed the tuning.

	In the case of driving two TC's into one antenna tower, if the
secondaries were in SERIES (not sure how you handle the breakdown of the
one at the top of the grounded one but that's an excercise left to the
student to figure out) the effect would be the same as long as there
were no streamers and attendent loading.

Ed