Quote from: TinselKoala on April 16, 2017, 10:31:55 PM
How about this magic, MH: 

Here is a scopeshot of the TBF pancake coil (661 uH, F_R = 273.2 kHz) being stimulated by a sine wave at the resonant frequency. The Blue trace is the source frequency,  the Yellow trace is the voltage across the current sensing resistor as used in the previous scopeshots connected as MH specified, and the Purple trace is the signal from a "pickup coil" (actually the monofilar pancake, it was the first thing handy to grab) suspended a couple of cm away from the TBF coil. Not connected (but share the common ground of course). It is clearly getting a voltage induced in it. But the current sensing resistor on the TBF coil is showing zero voltage across the resistor, which should mean no current flowing through it. Clearly, the TBF is still generating a magnetic field that alternates at its driven frequency, otherwise it could not induce a voltage in the pickup coil. Right? 

(Inspired by Gyula's questions, thanks!)

Here my results of that same setup (528uH, Fr = 320Khz).

Yellow the flatlined signal across the 10 Ohm resistor.
Blue the input signal from the FG
purple the signal across a coil dangeling 2cm in front of the TBP coil.

Detuning the frequency returns the yellow sine wave signal and leaves the both blue and purple signals the same.

Itsu

Quote from: itsu on April 18, 2017, 04:28:32 PM

Here my results of that same setup (528uH, Fr = 320Khz).

Yellow the flatlined signal across the 10 Ohm resistor.
Blue the input signal from the FG
purple the signal across a coil dangeling 2cm in front of the TBP coil.

Detuning the frequency returns the yellow sine wave signal and leaves the both blue and purple signals the same.

Itsu

Nice work Its

So where do we go from there? The thread title is what it is.  Not being cynical, just is that it?  Or do we load the sec and see what we get. Or move the second coil right on top of the bifi and see what we get. Would be interesting if it is all just normal transformer action. But for me this is not what I think tesla was intending with his discovery, thats why I didnt include the resonance test in my list of 3 tests.  Here is why..

If you can measure the inductance, resitance and capacitance, does it jive with the result on the test equipment? Are we in the range of res freq calculated? If so, then this is not the way Tesla intended his discovery to be operated, for one reason only..... It doesnt show the 'neutralization of inductance" he describes. If the res freq situation were to show such we wouldnt have a resonant freq because the induction element would be lost. LC with no L. So it is good to show what you guys have shown, as it proves we need to look at it a different way in how we are to achieve his claimed effect. I already knew that and thats why I claimed I wasnt looking for resonance effects earlier in the thead, of which may boot me out of the conversation.    But if it is teslas bifilar coil we are looking into, then we should continue on to see what else we can do with this coil in reference to Teslas claims. I believe it is in dc discharge is where we should be heading because I believe that is where we will see his claim come into effect and be able to fully charge the capacitance without influence of inductance and only impeded by resistance. And if someone answers my question on the last page, if they believe that all the pairs of turns are fully charged immediately, by measuring the potential between turns at the time of external input, then we can say good by to the resistance impedance also and the cap gets fully charged without delay. But I think resistance 'may' play a part, but we will see.

Mags

Quote from: Magluvin on April 18, 2017, 04:59:56 PM
Nice work Its

So where do we go from there? The thread title is what it is.  Not being cynical, just is that it?  Or do we load the sec and see what we get. Or move the second coil right on top of the bifi and see what we get. Would be interesting if it is all just normal transformer action. But for me this is not what I think tesla was intending with his discovery, thats why I didnt include the resonance test in my list of 3 tests.  Here is why..

If you can measure the inductance, resitance and capacitance, does it jive with the result on the test equipment? Are we in the range of res freq calculated? If so, then this is not the way Tesla intended his discovery to be operated, for one reason only..... It doesnt show the 'neutralization of inductance" he describes. If the res freq situation were to show such we wouldnt have a resonant freq because the induction element would be lost. LC with no L. So it is good to show what you guys have shown, as it proves we need to look at it a different way in how were are to achieve his claimed effect. I already knew that and thats why I claimed I wasnt looking for resonance effects earlier in the thead, of which may boot me out of the conversation.    But if it is teslas bifilar coil we are looking into, then we should continue on to see what else we can do with this coil in reference to Teslas claims. I believe it is in dc discharge is where we should be heading because I believe that is where we will see his claim come into effect and be able to fully charge the capacitance without influence of inductance and only impeded by resistance. And if someone answers my question on the last page, if they believe that all the pairs of turns are fully charged immediately, by measuring the potential between turns at the time of external input, then we can say good by to the resistance impedance also and the cap gets fully charged without delay. But I think resistance 'may' play a part, but we will see.

Mags

@Mags,

The coil goes past the cancellation phase and accrues "Negative Henries". This factor measures gain in the coil's magnetic field.

Quote from: synchro1 on April 18, 2017, 05:04:43 PM
@Mags,

The coil goes past the cancellation phase and accrues "Negative Henries". This factor measures gain in the coil's magnetic field.

What does that all mean man?  That is like, who would understand that statement as a whole?

Mags

Quote from: Magluvin on April 18, 2017, 05:10:10 PM
What does that all mean man?  That is like, who would understand that statement as a whole?

Mags

The coil field increase factors directly into electrical power units that can be deducted from the input for an accurate COP. A negative Henry is the measure of the coil's magnetic field strength! Joseph Henry's formula of Inductance allows us to measure the field strength in units of negative inductance, and give that an equivalent value in electrical power units.