Pulsing A Bifilar Coil And Collecting From It And Various Ways Of Going About It

[evostars]

One more thing.... Not sure if this was brought up before...

The total for both coils is 35mh  The sifi individual coil were 13.5mh and the bifi were 9mh each.  The calculated resonance for the bifi using 35mh and 16.4nf is 6.1khz and the scope shot is 12.98khz.  So I recalculated for 9mh which is each windings measurement and we end up with 13.1khz.  So we have to only use the inductance of 1 bifi winding and the total capacitance to calculate the resonance of the bifi. 

Seems like there is an oddity there. Like the 2 bifi windings maybe ignore each others inductance at resonant freq??    new puzzle part?   In series it measures just like the series sifi coil, but apparently at resonance the working inductance of the bifi is 9mh.

Mags

very interesting!
could this have to do with the phase alignment (0 degrees) of the dielectric and magnetic field at its resonant frequency?

[Magluvin]

pulsing the coil, like ringing a bell. short high voltage infinite small rise and fall time, hairpin pulses, like the hammer that rings a bell.

I use this, and highly recomend it:
http://www.rmcybernetics.com/shop/cyber-circuits/pulse-modulator-ocxi
It gives these hairpin pulses, if the impedance of the load is small enough.

Best would be pulsing the bifilar coil, from both ends, with opposite polarity. (discharging a capacitor with both leads at the same time).
It could be done with a relais, charging both leads at one possition, and discharging both leads into the coil at the other possition.

So far these tests have just been apply power and release with a switch.  It gives me so far the ability to see the res freq of the coils. Just showing that some tests do not have to be so sophisticated yet get the job done.

Thanks for the info

Mags

[Magluvin]

very interesting!
could this have to do with the phase alignment (0 degrees) of the dielectric and magnetic field at its resonant frequency?

Im not sure why yet. But so far 2 coils show i can consistently find the res freq by calculating the inter winding capacitance and the inductance of just 1 winding of the bifi coil.  Was conveying this at OUR and TK seems to think its all wrong. Yet the numbers are not wrong. Sooo  we continue on and present the findings here.

To me it seems strange that TK would not find it interesting, and he was the only one there to reply to my posts on this.  Like if the numbers work, then why insist that the only way to find the res freq is by testing and then find the 'actual' capacitance through formulation?  It bugs me that no one seem to find this interesting enough to say hey, lets look at that some more...  Well I am.

I dont want to start argument, but I do want discussion.  If as TK says the only way to find the distributed capacitance is by testing for res freq and then only are we able to account for the capacitance, then I have to argue that.  It is not a capacitance that can be seen nor measured in any way other than testing and formulation, while on the other hand, if we measure the winding to winding capacitance, of which is tangible, and can be isolated and measured, and we use that to calculate the res freq of the coils with just the inductance of 1 winding and come up with very accurate outcomes, then what am I to believe?  Should I believe in the invisible, undetectable capacitance that can only be determined by calculations, or do i believe in the capacitance that is a real thing and consider that the bifi could very well have strange induction properties? Why is it so difficult to imagine that there is an 'invisible' strange induction effect between the 2 windings, yet believe in a capacitance that is not able to be seen nor detected other than through formulation.

Mags

[Magluvin]

One word sums it up......damn.....



https://www.youtube.com/watch?v=ChV7n0EY2h0




He hits you with a wet phone book....in the face.....with the mother of all nuggets.....find it!


Sweet video TK from the guy who dislikes scopes and proper measurement.....

Im hoping you are referring to using inductive magnetic kick from the small coil to the bifi.    Thats pulsing in my book. 

Mags

[Dog-One]

Look deeper....

Augment the wave with an impulse.