In looking at your output waveforms, it appears that your MEG is still a "Biased
transformer". Note the skewed output waveform. Try changing the input frequency/
voltage so that the output is a perfect sinewave. (believe me, that's the
trick!) Only then is
the output a result of only switching the flux of your magnet. Right now, the
primary is
producing external flux and that flux is intercepting the secondaries. The MEG
has become
a transformer (like the rest of us) with a COP<1

> Hi, it's me again,
>
> I have some updates and some graphics. Theses graphics show one of my
> biggest challenge into understanding and making work the MEG.
>
> This one:
> http://cf.pg.photos.yahoo.com/ph/ccool_j/
detail?.dir=cdf7re2&.dnm=7824re2.jpg&.src=ph
>
> is a graph of the voltage at the entry of my Coils. The graph is
> "inverted" because when the tension is zero, it means that there is
> some current going in. If you refer to JL Nadin's design, I am
> reading the tension between the Fets and the input coils. As you can
> see in this picture, there is a lot of resonnating freqencies in
> there. On the graph, I have chosen a frequency that minimises the
> effects. Well at least the "first big peak" of the high frequency in
> there. I was wondering if any of you observed phenomenon like these
> on their MEG or mine just has too many parasites
> (capacitorS/inductors/resistors)
>
> By the way, the reason why the tension goes on the minus side is
> because I added a protecting diode to bloc the current and protec my
> Fets. But even without this protective diode I still have the
> resonnating effect.
>
> Also, on this graph:
> http://cf.pg.photos.yahoo.com/ph/ccool_j/
detail?.dir=cdf7re2&.dnm=5edfre2.jpg&.src=ph
>
> You can see both of my output (tension divided by 6 with a 66kohm
> total resistor)
>
> I have been trying to figure out what is causing that "bump" on the
> sinus wave. If you look carefully, you can see it is only on the
> "upper" side of the graphic. If I push up the frequency, I can
> diminish the bump-effect, but my COP is going down very fast... That's
> why I was wondering if anyonw had this effect or could explain (or
> give a good hint)
>
> This graph is kind of giving me an idea,
> http://cf.pg.photos.yahoo.com/ph/ccool_j/
detail?.dir=cdf7re2&.dnm=d250re2.jpg&.src=ph
>
> It is a graph showing the entry (1) with the output (1). As you can
> see, there is a phase between the output and input, which is leading
> me to think that the bump and the high frencies mentionned before are
> linked somehow...
>
> I know this mail is getting long, that's why I won't talk right now
> about the other aspect of COP based on average DC current vs RMS
> current. (curious peaple can look into the other pictures in this album)
>
> Thank you for reading and commenting. I really like to read you
> comments. I've read a lot of previous message now, it is very
> instructing.
>
> Ccool
>