Just an FYI:
I consider the complete TPU to be what SM called his 'collector'.
What the TPU research community commonly calls 'collectors' I call 'horizontal control coils'. I tend to keep that to myself while going with the flow during most discussions.
szaxx,
Take two loop elements of the same size. Feed both with the same signal, except delay the signal to one. Place a pickup loop between them (1 half the wire length or less or 1 half the diameter or less). That pickup loop will see an elliptical wave (rotation around the Z axis). The spacing between the two driven loops dictates the pitch of the elliptical wave. That part is not hard at all.
The hard part is creating the second rotation around the conductor of the pickup loop. Beyond that, I assume the two rotations must be synced in some way.
Between the two rotations you have the same magnetic fields around that pickup loop conductor as if it already had a current flowing through it. I also assume that an A field is also needed going the opposite direction of intended current flow.
With the right magnetic and A field orientation and placement current must be generated in that 'pickup loop'.
After all, all other methods of induction are reciprocal, aren't they?
My chances of being correct are just as good as anyone because we still don't have physical understanding of those electromechanical systems where we cannot neglect the mutual interaction between electric charges and currents, and the electromagnetic field emitted by them. Nor, do we have an understanding of how the correct device will react when subjected to such a combination of electromagnetic fields.
I think an SM collector is one of those systems.
In spite of a long history of efforts, there is still no generally accepted classical equation of motion for charged particles, as well as no pertinent experimental data. With this fact we throw computation of the A field out. Why? Because dominant theories suggest the A field has no effect except to allow for propagation in a vacuum?
IMO - Simple arrogance and idiocy.
Food for thought....
When you have DC continuous current going through single conductor your compass will point perpendicular to that conductor. Try to find separate North and South poles with that compass. You can't because that field is radial.
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