bartb wrote:
I tried using the existing objects to accomplish this but I was never
satisfied with the results. For example, half a streamer on both
sides of a toroid is "not' linear to a single streamer on one side.
Once I realized this, I knew I needed Paul Nicholson. I wrote an
email to Paul for the implementation of this into Geotc, but at the
time he wasn't getting my emails (lost in cyberspace I think). Paul
also hates JavaScript more than I do (no, I don't think so!), so
likely this can't be done unless I can figure a method to use
existing objects. I have only at my disposal toroids, spheres,
cylinders, and discs. All of these I can configure into a "rod"
shape, however, they all implement out on both sides from the center
of the coil and that is my problem. I couldn't find my happy spot and
eventually got busy with other things never to resolve this
situation. I still long to do it.
The only element that can be configured as a rod is a vertical thin
cylinder. What looks as rods to both sides is actually a disk. A true
3D simulator can be written, but it would take much longer to do the
calculations.
I would never try to tune a coil by adjusting separately the resonance
frequencies of both coils. What I do is to apply a low-impedance (<1
Ohm) low-frequency (1 kHz) square wave across the spark gap and
observe the transients across the primary coil in an oscilloscope at
the transitions. I then adjust the system to obtain complete notches,
what indicates that complete energy transfer is occurring. This method
gives complete information about what is happening with the whole system.
http://www.coe.ufrj.br/~acmq/tesla/tuner.gif
http://www.coe.ufrj.br/~acmq/tesla/mid_comp.jpg (simulation x
oscilloscope)
Antonio Carlos M. de Queiroz