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&.s\
rc=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&.s\
rc=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&.s\
rc=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