another small breakthrough on our NERD technology.

[fuzzytomcat]

BTW, I've built "every" variation that seems to be extant, including a couple of my own.

The single mosfet circuit shown on the early Ainslie photo
The single mosfet circuit shown (but NOT demonstrated) in the video
The 5x parallel mosfet circuit that was "claimed" to be the one shown in the video
The actual circuit shown in the video, with and without gate input resistance
The actual circuit shown in the video, but with the FG minus at the common minus, rather than where it is shown on the diagrams
The circuit given in the first unpublished paper
and now
The circuit given in the second unpublished paper.

Hi Tk,

This schematic is one that is posted on Rosemary's "BLOG" ..... did you do this one ( Simulation Schematic.jpg ) their so mixed up ? 
http://newlightondarkenergy.blogspot.com/2011/04/109-simulated-circuit.html

I added mine with the mosfet diagram and the internal diode .... ( RA_5_Mosfet_Switching_Circuit_Analysis_011_.JPG )


FTC

[TinselKoala]

@fuzzy: yeah, pretty much. Those sim diagrams make explicit the lead inductances and some capacitances in the circuit. I still haven't gotten my inductance meter delivered so I can't measure the inductances of my leads and loads yet. I'd be surprised if they were much different than the values in the sims... I cut and estimated based on your advice and looking at the pictures, but there is still a lot of inductance in the NERD battery leads that I don't have... hence the little brown inductor experiment. When the present circuit switch happened, swapping Q1 and Q2 positions, I had to extend the leads of the lone mosfet to aid its oscillations.
Also I only have 4 batteries so I can't operate at 72 volts.... yet.

(I can't read the value of R1, the series gate resistor, on the diagrams. I have one of 0.3 Ohms on TarBaby which I usually use but don't have to. It really doesn't seem to make much difference.)

[poynt99]

TK,

The resistor value of R1 in that diagram is 22 Ohms I believe.

The thing is, you can't exceed that in the simulation, or it doesn't oscillate. I used 2 Ohms in my simulation.

[fuzzytomcat]

@fuzzy: yeah, pretty much. Those sim diagrams make explicit the lead inductances and some capacitances in the circuit. I still haven't gotten my inductance meter delivered so I can't measure the inductances of my leads and loads yet. I'd be surprised if they were much different than the values in the sims... I cut and estimated based on your advice and looking at the pictures, but there is still a lot of inductance in the NERD battery leads that I don't have... hence the little brown inductor experiment. When the present circuit switch happened, swapping Q1 and Q2 positions, I had to extend the leads of the lone mosfet to aid its oscillations.
Also I only have 4 batteries so I can't operate at 72 volts.... yet.

(I can't read the value of R1, the series gate resistor, on the diagrams. I have one of 0.3 Ohms on TarBaby which I usually use but don't have to. It really doesn't seem to make much difference.)

Hi TK,

SO ... the illustrated BLOG example (D) drain, (S) source and (G) gate five (5) mosfet connections you have tried ....

Ok ... I'm wrong .... it was the new one from  ..... Proposed variation to Faraday’s Lines of Force to include a magnetic dipole in its structure  ( ROSSI-JOP-2- PDF.pdf )

FTC



EDIT - corrected added new found schematic 

[TinselKoala]

Heh... I had not yet seen the image below. This is the simulation behaviour of the circuit above, from Rosemary's blog that FTC linked above.
The trace shows the start and finish of a set of oscillations at high resolution time base. Look at the way the oscillations taper on and taper off.... interesting isn't it?

Now take a look at this video I made, BEFORE I saw the image below, just to show off the delayed trigger timebase on my HP180a oscilloscope. See anything interesting?

http://www.youtube.com/watch?v=mKaY_ZGr0jY