Russ Gries did this test as well:
https://www.youtube.com/watch?v=-HDwOwfIHns

Quote from: Dog-One on April 29, 2017, 08:42:15 AM
Russ Gries did this test as well:
https://www.youtube.com/watch?v=-HDwOwfIHns

I'm convinced that this is just a simple parallel LC network as seen by the source.  Look at that video where the input current dips to its minimum when it is 90 degrees out of phase with the current in the center of the coil.  This would suggest that XC and XL are equal and that a resonance condition has been met.  Then as the frequency is increase, the phase shift of the current in R1 vs R2 is greater than 90 degrees, also another sign of parallel resonance.  See image for simplified visual.


Dave

Expanding on the hopothesis that this is a parallel LC phenomena, it would seem that connecting the bifilar coil in series conjunction would create a high impedance to the source at resonance as indicated by some of the experiments done here by forum members.  Here is that Tesla quote again..

QuoteI have found that in every coil there exists a certain relation between its self-induction and capacity that permits a current of given frequency and potential to pass through it with no other opposition than that of ohmic resistance, or, in other words, as though it possessed no self-induction. This is due to the mutual relations existing between the special character of the current and the self-induction and capacity of the coil, the latter quantity being just capable of neutralizing the self-induction for that frequency. It is well-known that the higher the frequency or potential difference of the current the smaller the capacity required to counteract the self-induction; hence, in any coil, however small the capacity, it may be sufficient for the purpose stated if the proper conditions in other respects be secured. In the ordinary coils the difference of potential between adjacent turns or spires is very small, so that while they are in a sense condensers, they possess but very small capacity and the relations between the two quantities, self-induction and capacity, are not such as under any ordinary conditions satisfy the requirements herein contemplated, because the capacity relatively to the self-induction is very small.

Tesla said a current of a certain potential and frequency to "pass through it", not circulate around it.  It sure sounds to me like he is not talking about a parallel resonance circuit....    I wonder if this is why Erfinder is telling us to utilize the bifilar coils with one winding galvanically isolated from the power winding.  Things to think about..

Dave

Quote from: Erfinder
Who didn't see this coming.......


There is no coming back from this.....

You have a point, but I'll try anyway.



Attached is somewhat of a refresher.

Pay attention to the term "antiresonance" in regards to resistors placed in certain
locations.  If they can have that effect, then imagine what one might do with
resistors you can switch-in or switch-out at certain points within the cycle.

Once you have mastered that, then replace the switchable resistors with
actual passive LCRs that do the switching automatically.

Off to the races we go...

Quote from: Erfinder on April 29, 2017, 04:09:59 PM
Dissipation is waste......we cannot sugar coat that...

True, true.

Quote from: Erfinder on April 29, 2017, 04:09:59 PM
"antiresonance" is just a fancy twist on a concept most are still having nightmares about and are trying desperately to get away from..... Do not oppose, opposition to change "is" the underlying fundamental mechanism....  transform opposition via the proper impedance into augmentation......or not...

That's kind of what I was getting at in the name of parametric oscillation.  At all points within
the cycle of an LC, push away the opposition by whatever means you have at your disposal.
LC within an LC would be the most preferred way, but active components could be used as
a stepping stone until the concept is better understood.  Augmentation is a good word here.