On 5/21/21 11:57 PM, Bree Turner wrote:
Been a while... Hello! Brent Turner here. Was just hit with a stunning revelation. Bill Beaty had an interesting discussion about using a Tesla coil secondary into a single-line transmission system. (The end capacitances thus used for the e-field return. http://amasci.com/tesla/tmistk.html#:~:text=Tesla's%20other%20big%20mistake%20was,end%20of%20that%20transmission%20line. Recent interest in the Zenneck wave got me thinking. https://www.nature.com/articles/s41598-020-57554-1 Look at Tesla's Magnifying Transmitter patent drawing. Note the inclusion of a THIRD winding in the exciter/driver. It's NOT the primary winding. Bill Wysock speculated that perhaps it was to SUPERIMPOSE the actual POWER WAVE and simply use the Transmitter as the carrier system. BINGO. Now consider an analogy to how a klystron tube works. The beam current acts like a SINGLE CONDUCTOR TRANSMISSION LINE, in that the RF signal is modulating the electrons into the characteristic bunching, which of course travels the length of the drift section. https://www.tutorialspoint.com/microwave_engineering/microwave_engineering_cavity_klystron.htm Now REPLACE the drift section with the Tesla surface wave. It suddenly all makes sense. Was Tesla's idea to send the actual POWER via 'packets' IN the surface wave? Mike drop.
So.. leaving aside "wireless power transmission" which is not allowed on this list (too much crankery ensues)..
A klystron (or any cross field amplifier, like a traveling wave tube) is using a varying electric or magnetic field to increase the speed (energy) of the electrons in the beam. The timing of the field vs the motion of the particles is the key - in a TWT or a linear accelerator, you can change the relative velocity of the "slow wave" to be slightly ahead of the particle speed, so it's always "pulling" it faster. This is why the spiral pitch on a TWT or the length of the drift tubes on a LINAC gets longer as the energy gets higher. If you change the frequency (or the phasing) a bit you can make it *slow* the particles.
A good analogy is someone on a swing, and you're pushing them at just the right time to increase the amplitude of the swing. The analogy to a tesla coil is that by optimizing the frequency and the capacitance top load, we're able to push more electrons into a growing ionized channel (spark streamer).
On some direct driven (non-spark gap) TCs, the "resonant rise" effect is the key (e.g. on a CW VTTC operating in Class C).
But, no, I don't think he was thinking about pushing packets of electrons through the aether.
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