http://www.youtube.com/watch?v=lCzZyB_UUMc&list=UU1ZrGlkxBvG9WOwIs2eApLA


I have no idea if this device is real, but it appears to be using the Colorado springs
free coil idea.
In this video he is so p...d off at the criticism that he takes his device apart.

Can someone introduce a terminology that seperates the rising effect from the falling effect?  For lack of an apparent agreed standard, I'll use  Dollard's.

If the capture of the back EMF(building magnetic field, we need this to happen, the resistance or back pressure to the current in the first place); then no current would build in the coil...

if a bifilar coil, leave the one end open, and use the 'leakage' capacitance of the coil as the capacitance at a factor of 50pF/m (this is always parallel and cannot be less than what it is {tempurature?}).  (for small wire)  Larger gauge wire is a significant more capacitance, lower resistance... thin wire is high resistance, low capacitance (A long thin capacitor may have 'most capacitance' but that's still less than any size ball (?) ref. Tesla notes as he comments on 'high capacitance in thin gauge wire' which is really 'high resistance' that limited the flow, reducing apparent effectiveness without more drive capacitance (voltage?)).  With a resonance against the inductance of the primary and the wire's capacitance; grounding the same end of the coil as is applied a positive signal in, will result in a usable current on the secondary with a higher positive on the secondary; transferred inductively not capacitivly. 


if the forward EMF is captured...(the force that is keeping the coil going forward... with diodes; {someone mentioned CEMF as a counter to BEMF }) into a separate coil, you'll lose the resonant rise in the original circuit.

A series of zener diodes can be tapped to limit how much is taken from the tank...
Unless the total breakdown voltage is available in the tank, the zeners won't conduct; (well, they will, from ground which is okay we can always use more substance to hold more pressure).. otherwise, the reverse negative pressure will breakdwon the zener conductance, if the series is 50V-40V-10V reverse breakdown, then you can get anything more than 100V from your resonant tank, and a load between 40-10 will get 90V available to it... once the tank is under 100V it is allowed to rebuild.

I stumbled on a royer oscillator in hydraulic form...
or there's another pretty good one in this message
http://www.overunity.com/12736/kapanadze-cousin-dally-free-energy/msg380445/#msg380445





This is a forward EMF test ... when the drive goes away, using diodes to a capacitor, allow the coil's forward momentum to charge the coil.  I later added a load resistor to measure power available there and another coil... so now there are two DC currents kept in the coils with a pulsing input.

This circuit (unfortunatly) must switch at the peek differential across the mosfet (+/- above and below neutral)... Better to use something like a vaccuum tube I'd think... I dunno; this is just a tuned clock for the LC constants...

If you switch the current to another coil, you won't get a resonant rise in your tank.

Tesla's description says it all.

Have you ever seen an electromagnetic field in free space, I have it was for me an awesome experience. I had the mazilli circuit hooked to a transformer I had made powering a light bulb about half brightness not so much that you could not look at it. I went to my shop about four in the morning it was very foggy, was drinking my coffee and hooked the system up, I could see the magnetic field around the light bulb and what looked like compression waves emanating from the bulb, I tried to catch it on video but it did not show up on film.
Iv thought of reproducing the effect with a humidifier but have never done it.
For me its as much about understanding how the fields work as it is about free energy thats why I have not tried to build a mechanical system, I believe its very simple we just have to find the key.

http://worldwide.espacenet.com/publicationDetails/biblio?DB=EPODOC&II=0&ND=3&adjacent=true&locale=en_EP&FT=D&date=19820817&CC=US&NR=4345174A&KC=A
shows the use of the elektro-magnetic force and the severals distances force effect.
Extracting:
"The operation of the inventive engine 10 will now be described. It is first to be noted that the pull of an electromagnet varies as a function of the area of the holding surface muliplied by the square of the flux density divided by a constant. Also, that the flux density increases as the distance to the holding surface decreases. Hence, changes in the flux density is the greatest contributor to the pulling force of an electromagnet. Experiments conducted by the inventor have shown that an electromagnet powered by two "D" cell batteries can produce a holding force of 500 pounds and that the magnetic attraction force varies with the distance between the surface of the electromagnet and the item to be lifted. It was found, that at a distance of one-eighth of an inch, the force is approximately 7.8 pounds; at a distance of approximately one-twelfth of an inch the force is 31 pounds; at a distance of approximately one/twenty-fourth of an inch the force is 125 pounds; and, as stated, at contact, the force is 500 pounds. Thus, a usable force begins when the distance is one-eighth of an inch and increases rapidly thereafter."
                                                                              Citation End.

Using capacitive windings was the trial to use this electron/ion wind thrust, instead "D"-cell batteries.


Sincerely
              OCWL


p.s.: similar phaenomen http://techtran.msfc.nasa.gov/support/images/MFS-31419-1-Thruster.pdf
                                      http://worldwide.espacenet.com/publicationDetails/biblio?DB=EPODOC&II=0&ND=3&adjacent=true&locale=en_EP&FT=D&date=19281115&CC=GB&NR=300311A&KC=A
from whom ,the fundamentals ? http://www.human-resonance.org/gravity_motor.html