The bifilar pancake coil at its resonant frequency

[MileHigh]

Won't we see a change in magnetic polarity when switch opens?  hmm i need a field sensor.

You absolutely will not.  The current through the coil will drop to zero with no discontinuities at all and you will observe the strength of the corresponding magnetic field drop to zero with no discontinuities at all.

It's incredible how tenacious wrong ideas stay with amateur experimenters because of the bad and incorrect ideas put in their heads by various free energy luminaries.  You can work on your bench for years believing the wrong things and do lots of experiments and effectively partially sleepwalk through them consistently being wrong and believing that you are doing great work.  Evostars is talking about a "Bloch wall" and I think that disinformation can be traced back to the late great John Bedini.

[TinselKoala]

http://www.youtube.com/watch?v=8vyg0NX0zh4


The problem with you Zephir, is that you are trying to get people to believe you have a cat, when you are talking about your stuffed toy teddy bear.

You are wrong, you have been proven wrong, and your best course is to apologize and admit your errors and move on.

Or, if you think you can provide your own experiment and demonstration to support your fanciful claims, then by all means DO IT. But we already know you can't, or you would have done so by now.

[TinselKoala]

Yes capacitor is an other matter.

Cemf is reaction to change. It always follows magnetic polarity changes right? It always develops it self in a way so to oppose to magnetic field's changes. Now, when we see a change of cemf across our secondary from negatives to positives. Doesn't that imply that for this brief moment where current decreases to zero there was also a magnetic polarity change? If we would place a field sensor watching the flux. Won't we see a change in magnetic polarity when switch opens?  hmm i need a field sensor.

Direction of current determines polarity of magnetic field, yes? So if current does not reverse,  neither does the magnetic field. How could it be otherwise?

You can use a ratiometric Hall effect sensor like Allegro A1301 or A1321 or similar, they are cheap and easy to work with.

[MileHigh]

If I would want to fight with mainstream crackpots, then I've many other forums where to go.

LOL  You are a Zanti misfit!

Just as every cop is a criminal
And all the sinners saints
As heads is tails
Just call me Lucifer
'Cause I'm in need of some restraint

Pleased to meet you!

[TinselKoala]

You absolutely will not.  The current through the coil will drop to zero with no discontinuities at all and you will observe the strength of the corresponding magnetic field drop to zero with no discontinuities at all.

Well, almost. In reality all real circuits will have some stray capacitance so there will be some ringing. You can see this slight ringing in Jeg's scopeshots. But less sensitive instrumentation -- like my LED      is good enough to show the truth and demonstrate the principle.

(snip)