Muller Dynamo

[konehead]

Hey sonedi

Looks good! - are you actually testing this now with a Romero like machine or something similar?

This is a lot like what I have been doing past year, which is SHORT the generator coil with mosfets for only short blip, and at sinewave peaks (near TDC) is best place to do it
Then AC legs of FWBR across coil too, and the DC into cap.
Its best to do mosfets in paralell for minimum resistiance which is really important
Ismael Aviso told me to do this and it is important to have very little resistance in the swtihcing..
Ismale also shorts 5times at peaks too and gets even more out...

I just plop it all into a cap at DC side of FWBR....no transformer or anything over on that side of circuit.
then cap goes to load, with two-stage output circuit so the coils never see the load, they are disconnected from cap whe caps hit load, and the only thing the coils ever have to do is fill the caps and "be" shorted for a blip.
anyways jsut thinking the single diode and single mosfet might be only catching "half" of it - maybe try out bidirectional mosfets too (connect gates and source swtich between two drains) and also FWBR or half bridge into cap or "diode plug" where two caps fill from two diodes pointed opposite if you want to go that way which is a bit more effecint since one collects owhen other is "off".
This is the way to go with Muller-like mahcines but I dont think romero was doing anythign like this - he knows about coil-shoting with swtihcing and did some videos but dont think he did that in his looper... still want to explore "what" Reomeroe did its whole other thing but what you show should work fine but my meager opinon is the output should be two-stage instead of transformer I dont know maybe your way is way better need to try it and find out.

[nul-points]

@Nul-points . Will you do us a favour and create a link please . Thanks . neptune .

it's very tempting to say "sure - to anything in particular?"   

hope you meant to your previous link?

  link-->www.tesla-coil-builder.com/bifilar_electromagnet.htm
 

[neptune]

@Nul-points . Yes thanks for that link .
@Poynt99 . The current was the same in each case -0.8 amps . Remember that the total number of turns was the same in each case , and thus the total wire length was approximately the same . So , in the bifilar case , you have 2 wires in series , and in the quad case , 4 wires in series . It would seem to me that the total number of amp-turns is the same in each case .

[kEhYo77]

Regarding bifilar coil magnetic field strenght I did similar experiments, which confirm a greater magnetic force vs normal winding.
http://www.youtube.com/watch?v=3AxxxVLmORM&hd=1
In my video the two coils are in series, so the power going through (current) is the same in both cases.

After few experiments with my pulse motor setup I figured that we have to reduce input power to get any close to OU.
That is why I just ordered a small 3-phase motor 0,5kW 3000 RPM to play with a resonant rotoverter circuit setup.
I will mount a wheel with magnets on its axis when tuned an will go from there to match the output load vs input tunning...

[rogla]

As for your question about winding large L, low C coils, the best geometry for highest inductance would be the Brooks Coil. The proportions of width to height maximize the L and minimize the C of the coil. Also adding a metal core to the coil will increase the L but lower the frequency range at which the coil can be operated before the losses get too high.

- Jason O

Thanks allot Jdo300, will have a look at the Brook coil.