The bifilar pancake coil at its resonant frequency

[tinman]

Moderation is a waste of time!  You cannot expect to grow if you censor.  If you don't want to read someone's post, ignore them.  This place gets clusterquickly....which is worse, twenty pages of someone spamming, or twenty pages of someone slamming you with every text book ever written, showering you in no one needs a lesson in,  and at the end of the lecture you're still as clueless as the guy/gal spamming....


This is not the place for a productive discussion, never was, and probably never will be.  Those whose experience allows them to"represent" the status quo aren't wise enough to shut the  up and let people fall on their faces!  The excuse that you are trying to save people from taking advice from the idiots is idiotic....  The excuse that you just can't stand by and allow the ignorant spread lies is a bold face lie. There are no facts.  Think and believe what you want.... 


IF you take advice from a fool, and you didn't know the advice came from a fool...what does that make you...not a question.That coil is the subject of this thread....stop listening to milehigh preach about single sine functions!  ..... despite what you think, Tesla said what he said for the likes of milehigh, not you open minded folk!  For the open minded, there's a shit load you need to catch up on!  But you won't.....you will continue to listen to milehigh and others who know nothing more than the value of silence.....

I asked you politely to leave the foul language out,and you refused to do so.
I will not ask again.

Brad

[MileHigh]

Just like deja vu all over again.

I showed how when the bifilar coil self-resonates, the amount of energy stored in the LC resonator relative to the continuous resistive power burn is negligible.

I was the impetus for the frequency sweep, and the surprise so far is that we have only seen parallel resonance and not series resonance like the patent states.

Erfinder makes lots of claims but will not reveal anything.

Magluvin is going to do some future testing but will not reveal what it is all about.

And of course I ask the questions that many won't ask or they are afraid to ask because of the special flavour of political correctness around here:  What is the Tesla series bifilar pancake coil good for?  What can you do with it?  I have asked similar questions about other issues that nobody dare speak in the past.

[tinman]

Just like deja vu all over again.

I showed how when the bifilar coil self-resonates, the amount of energy stored in the LC resonator relative to the continuous resistive power burn is negligible.

I was the impetus for the frequency sweep, and the surprise so far is that we have only seen parallel resonance and not series resonance like the patent states.

Erfinder makes lots of claims but will not reveal anything.

Magluvin is going to do some future testing but will not reveal what it is all about.

And of course I ask the questions that many won't ask or they are afraid to ask because of the special flavour of political correctness around here:  What is the Tesla series bifilar pancake coil good for?  What can you do with it?  I have asked similar questions about other issues that nobody dare speak in the past.

Well i for one,have found nothing special about it-yet,other than the lower resonant frequency.

Erfinder will talk lot's,but never tell you anything other than riddles-it's the way he has always been.

Brad

[partzman]

Just like deja vu all over again.

I showed how when the bifilar coil self-resonates, the amount of energy stored in the LC resonator relative to the continuous resistive power burn is negligible.

I was the impetus for the frequency sweep, and the surprise so far is that we have only seen parallel resonance and not series resonance like the patent states.

Erfinder makes lots of claims but will not reveal anything.

Magluvin is going to do some future testing but will not reveal what it is all about.

And of course I ask the questions that many won't ask or they are afraid to ask because of the special flavour of political correctness around here:  What is the Tesla series bifilar pancake coil good for?  What can you do with it?  I have asked similar questions about other issues that nobody dare speak in the past.

Before this thread gets totally out of hand, I would like to propose at least one answer to MH's question above.  The TBC could be modeled as a symmetrical transmission line wherein each wire of the bifilar pair contains lumped inductors and the distributed capacitance between this bifilar pair are lumped capacitances connected between the lumped inductors.  I've attached a schematic to represent this. 

If this is correct, it might explain how when at a certain frequency no current appears to flow thru the TBC but yet induction can be detected with a separate sense coil in proximity.  IOW, the TBC is still inductively active when it appears not to be.  Possible applications to free energy, well, I guess that is up to us to figure out!

PM 

[itsu]

Hi Itsu,

I think you would need to make the pancake's self resonant frequency a little bit tunable by connecting a max 100 pF variable cap in parallel with it first and then approach the pickup coil near to it with its own variable cap. 
The detuning factor mutually affecting both coils resonances is the distance between them i.e. coupling between them. Any time you change the distance, you would have to retune both coils, this means you need coils to be tunable to both directions, up and down.   I do not think a  max 100  pF extra cap across the pancake would influence meaningfully any other properties of it other than its self resonant frequency.
The so called critical coupling would bring the most favorable response between the coils like in band pass filter cases.

Addition: I think any time there is a double peak created in the response then overcoupling is happening, this means you need to increase the distance between the two coils and retune their variable capacitors a little. 

Gyula

I made a similar TBP coil like the one i already had and which has similar specifications (1.4 Ohm each coil, 130uH each coil etc.)
With a fairly great distance between them, i can tune them (using a 45 - 450pF variable capacitor on the driven TCP coil) to resonate around
the same frequency.
When narrowing the gap between the TBP coils we see the resonance points getting split due to overcoupling, see screenshot below.

Yellow is the driven TBP coil being sweeped between 200 and 400 Khz.
Purple is the pickup TBP coil at the same resonance frequency.
Blue is the FG sweep signal.

Video here:  https://www.youtube.com/watch?v=2iXfDTRQKZ0

Regards Itsu