Just another Don Smith thread

[Vortex 22]

I'm fully aware of north pole vs North pole / or South Pole vs South Pole!
But I should not force nature to do something opposite to''her'' will. We should not break nature Law!!

I need real power !
Something like 50 Watt input and 10kw or 20kw output

Sorry I don't like magnetic Toys like TPU or VTA !!!
Regards

[pix]

Ok,
You have good result with this setup? Or it's just a nice theory?
When the load change, how can we tune it? By variable capacitor?
Well, I have alternative interpretation based on work.
Good luck!
Regards

It is my nice theory, that I am going to put into test.


Cheers,
pix

[nix85]

Few small corrections pix...

When we talk of Don's table top device/s.

Nothing high Q there, few turns, no core.

Q = 1/R * √(L/C)

"One secondary has capacitor connected to form resonant tank"

I added that cap there cause she did not draw it, but it is supposed to be there.
This circuit is exactly the same as another one, only difference is in this one
output is part of the bottom secondary path.

She promoted this misleading idea that cap is just across one secondary
and that resonance should be calculated for that one secondary only
and other one will magically resonate by itself. Of course, as Patrick Kelly
also correctly pointed out in his pdf, this is simply wrong, we have two
parallel inductors in parallel with a cap, in both circuits, this one and "basic".
Two parallel inductors have combined inductance of 1 inductor assuming
perfect magnetic coupling, since they are weakly coupled (being few cm apart)
overall inductance is less than 1 of them alone. Their magnetic fields
are of course in same direction.

It is not nonsensical to think of one secondary as resonator and another
as pickup but then you need to introduce an impedance change between
them, you do not want other (bottom) secondary participating in resonance.
If it does, of course, it will drastically change the resonant frequency.
And from practice and my measurements, even with impedance change
other secondary STILL participates/changes the res. freq. If she got it
to work by resonating just one coil alone that was sheer luck cause
resonance is sooo easily affected by EVERYTHING, not to mention
other coil of same size in parallel.

"What would happen if no capacitor"

With no cap not much changes, ofc still opposite voltage across two coils
but that is still not an issue considering there are two paths. Upper one
would still resonate with it's own parasitic capacitance affected
by the presence of the other coil, as would the bottom one which is
in addition affected by the load (cause it passes through it).
Less capacitance means bigger Q and bigger resonant rise.
No, B fields do not cancel by any means.

"With capacitor.."

Voltage is not bigger with a cap. On the contrary, cap reduces the induced
voltage. We can look at the secondary as combination of series and parallel
RLC tank. Both voltage and current can experience a resonant rise and both
are proportional to Q and Q, as formula above shows, is REDUCED by capacitance.
And again, B fields do NOT cancel. They are in same direction, aiding.

Of course even this is simplification cause actual dynamics are complex.

Or to put it all in few words...

Magnetic fields do not cancel out in either case.

Capacitance drops Q and consequently the resonant voltage/current rise.

[Vortex 22]

It is my nice theory, that I am going to put into test.


Cheers,
pix

Good luck
But you must be careful? Ok because high voltage is very dangerous 
Test only small version on low voltage

[pix]

I'm fully aware of north pole vs North pole / or South Pole vs South Pole!
But I should not force nature to do something opposite to''her'' will. We should not break nature Law!!

I need real power !
Something like 50 Watt input and 10kw or 20kw output

Sorry I don't like magnetic Toys like TPU or VTA !!!
Regards

Very high expectations. COP 200-400
I think, and this is only my opinion, we could only follow the way of a heat pump analogy. Where a large amount of "free" low temperature heat from ambient air is compressed to smaller amount of high temperature useable heat. Such a heat pump COP may be up to 5,depending from refrigerant used.
In electromagnetics heat pump analogy is a resonant circuit. It accumulates low energy flow and compresses it to high energy. Like a Tesla coil does.
In Don Smith concept , in my opinion he uses a clever trick to create dipole ( emf difference in a cw/ccw secondaries) without B field acting back to primary. Nobody pays attention to C2. How could you get any voltage from cw/ccw secondaries? They cancels in normal operation producing no voltage whatsoever. If you add to one secondary a capacitor, forming resonant tank- situation changes.
Of course it is my theory from today.
It stays theory untill I will test it.


Cheers,
Pix