Hello guys,
I'm new to this group, but it seems that some of you have some
experience with the MEG, so that's why I'm posting here the details of
my experimentation up to now. I'm also hoping anyone could have some
hints and tips to make my MEG work properly.
Fist, I've been studying the MEG for more than a year now and I've
made my first prototype 4 months ago. I have built the MEG from the
patent. I used an AMCC630 Metglas core with a rare earth neodium
magnet, (N42 grade) the exact same size as we can find in the patent.
Also, I'm testing with two combinaison of load.
1. 3x 33k (1Watt) resistor in serie total 100Kohm each side
2. 3x 33k (like 1) but with an added 460V MOV (BC1400-ND) in serie
As far a I have tested, the Mov is not helping at all. I do consider
the power dissipated in the Mov as lost power.
Also, my inputs are 2 50% square waves generated by a D-latch. These
2 signals then go through 2 sets of push-pull fet combination (n and p
fets). And like JL Naudin's design, I used nFet to "drain" the
current. My fets are IRF520
My best resuslts were COP = 0.74 to COP 0.78.
Theses results were calculated with an input of 32.6 Volt (DC) *
0.1408 Amps = 4.59 Watts for an outpout of average 141 Vrms on linear
resistor => 3.6147 Watts, for a cop of 0.7875.
I consider theses results as average, but the mesurement are precise.
I used a digital Fluke oscilloscope to calculate the RMS voltage on
the output and a good multimeter to calculate the input amps from the
power sources.
The patent seems to say that I will have to put more volts in to get
better results, but I don't see a big difference between 5 volts in or
35 volts in (with a COP perspective)
Also, I played a lot with the frequencies and it seems that my MEG is
optimum with input frequencies of about 30-45kHz. If I go outside of
these frenquencies, I loose a lot in efficiency.
As I'm looking for some insight, I wonder if anyone knows how
JL-Naudin got his input wave exactly like Bearden. What I mean is
that my input and output are not as "clean" as his. I have a lot of
high frequency phenomenon in my input and my output wave his slightly
distorded. I'm beggening to think this is where my problem his, but
I'm not sure how to solve it.
Anyway if anyone has clues, I would apreciate them
Thanks
Ccool