To continue, and round up this build. . .
Below, you may notice that I had the Extra Coil non-fixed into position. A PVC pipe, used as a contact shaft, allowed the coil to move vertically. The idea was to raise and lower the coil to experiment how that effected the output.
Had made several types of output terminals and devices.
This one shows a thin toroidal terminal made from copper pipe.
The termination used for the one and only experiment was an aluminium elliptical sphere. It was highly polished to eliminate any edges or scratches. Output discharges always finds the easiest spot to escape from, and any surface with a sharp point/edge (small radius) makes for an easy point of discharge. Having the spheroid polished helped to store more electrical potential within it. The sphere actually acts like a capacitance.
My notes will reveal what actually happened during the first and only experiment:
Basically the coil’s insulation was compromised when an arc from the spheroid reached down and bridged across to the outer coil. Electrically, the coil then had an invisible short circuit. The coil effectively needs to be rewired with extra insulation.
Shortly afterwards I had to relocated premises. During the move, the coil framework buckled, and popped the veneer wall of the outer coil former . . scratch one TC.
Have built a few more TC’s since then, each being very different in design and shape. My favourite coil is called an Oudin Coil. For some reason, the output arc has a very different appearance and manner about it. It grows quite large at a slow rate. The arc moves around slowly and gracefully with a pinkish glow.
It was this coil where I discovered what a flame is. I have a theory about it, and it involves the release of electrostatic chemical bond energy, via heat, to create a discharge in the form of a flame. The below drawing shows that the coil’s arc, from a copper wire terminal, entering under the flame’s edge and discharging out of the flames pointed tongue. There is no indication of an arc in between these two points.
Well, that concludes this side-track model build.