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I have continued my tests over the MEG and I have
not yet succeeded in a COP greater than 1, it is
less than 1, very less than 1. My las t experiments
have showed no overunity with frequency range from
17kHz to 50kHz with a MOV (see my last email), so I
have tried with a Neon tube in this frequency range,
and I tried again with MOV at 2,7kHz (because it was
my best output power result last time, and I am now
able to measure simultaneously input signals too)
The MEG radiates powerfull electromagnetic waves,
which I can't measure because I have no device to do
so, but I feel these radiations in my body (on face,
arms, etc) because it's very powerfull. This is, in
my sense, the way the missing Output power goes out
(because a lot of power is missing from expected at
output!)
I have used 2 oscilloscopes to measure
simultaneously input and output (on one input coil,
and one output coil). My experiments lead me to ask
wether to compute power and which one using to
compute COP. In effect, I read electronic
litterature, and we have 3 power types:
P apparent power = Power calculated withe the
product U(t) and I(t)
[see http://whatis.techtarget.com/definition/0,,sid9_gci213719,00.html]
P active power (or real power) = Power dissipated in
Joule effect in a resistor (Watts)
[see http://whatis.techtarget.com/definition/0,,sid9_gci213720,00.html]
P reactive power = Power alternately stored and
released by inductors and/or capacitors
[see http://whatis.techtarget.com/definition/0,,sid9_gci213721,00.html]
I consider the Output Coil as a power source and my
dipole power consumer is Neon+Resistor or MOV+Resistor
In my numeric computations, I compute:
P = (1/T) * Integral of (V(t)*I(t)*dt, from 0 to T)
apparent average power
P = (1/T) * Integral of (R * I(t)², from 0 to T) =
average active power throw resistor R (the problem
is that this value can't be computed because I don't
know and can't measure MOV resistor value or Neon
resistor value, because it changes with the applied
voltage)
And what can I do with apparent power? Sometimes it
goes negative, what does it mean? I have not changed
the way I measure currents, so why a negative powe
sometimes? What is the link with the powerfull
radiated electromagnétic waves? All this leads me
to a more profond questionning about power, its
meaning and the way we compute power. What do you
consider as a correct power for COP computations? If
you can help me with your advices, i would be very
happy.
Thank you in advance for you comments.
Mr Naudin, if you read this email, please help me:
how do you manage measuring sinusoidal phased
signals? (with Neon tube experiment, you have had
this and not me). I really try to obtain something
with my MEG, but each time it doesn't work.
(en français: Mr Naudin, pourriez-vous s'il vous
plaît aider un constructeur de MEG qui essaie tant
bien que mal de suivre vos traces et souffre de ne
pas être capable de reproduire un tant soit peu vos
résultats concernant les signaux sinusoïdaux en
phase dans l'expérience du tube au Néon (ou des
varistances d'ailleurs) avec le MEG 3.1).
Sincerely,
------------- Experiment Resume ----------------
Experiment number 1: operating frequency about 18Khz
I have experienced with Neon tube 4W+Resistor 12ohms
on each Output coil, instead of MOV or conditionned
resistor (I have not built such a device resistor)
because I wanted to reproduce Naudin's experiment: http://jnaudin.free.fr/images/meg32io.jpg
It's disappointing, because I have not at all the
same signals than Naudin (and the cause is not the
conditionned resistor this time; I have the same 3.1
MEG than Naudin's one, except for magnets). The
operating frequency is in the rspacified Naudin's
range. But my COP is very poor (problem with power
computations used to compute the COP??)
pictures related to this experiment:
------
Experiment number 2: operating frequency about 2,7
KHz
I have experienced with a MOV 840V(two MOV 420
serialized in fact)+Resistor 12 ohms on each Output
coil. I have tuned operating frequency to maximise
input current consumption by the MEG driver in the
2kHz to 5,5kHz range.
Disappointing too. COP very little.
pictures related to this experiment:
------------- Experiments Notes----------------
---------------------
EXPERIMENT 1
----------------------
LINleft=50mH LINright=48mH
LOUTleft=11,90H LOUTright=11,94H
CequivRIGHTload<1pF
CequivRIGHTload<1pF
Neon tube: 4Watts fluorescent tube (F4T5/D)
Resistor=12ohms (10Watt, ceramic, non inductive)
(same resistor for INPUT and OUTPUT measurements)
MEG driver consumption:
V no load=29,1V
I no load=45,4mA
(P no load= 1,32 Watts)
V load =33,7V
I load =0,06A (large imprecision due to multimeter
200mA fuse crash, I have used another calibration,
10A)
(P load= 2 Watts, bettween 2 and 3 Watts I presume)
Operating frequency = approximately 18Khz
INPUT oscilloscope:
calibrated experience:
chA=1V/div
chB=5V/div (probe 1:10)
T=5 micro sec
uncalibrated experience:(56 pix / div)
chA=1V/div [1,4880952 mA / pix]
chB=10V/div (probe 1:10) [1,785714 V / pix]
T=5 micro sec uncalibrated ratio 56/53 [0,0943396
micro sec / pix]
P apparent power (equal to true power given par MEG
driver oscillator?) = 1,05Watts (x 2 = 2,1 Watts)
P active power throw resistor = 89 milli Watts
OUTPUT oscilloscope: (56 pix / div)
chA=0,05V/div [0,07440476 mA / pix]
chB=10V/div (probe 1:10) [1,78571429 V / pix]
T=5 micro sec uncalibrated ratio 56/50 [0,1 micro
sec / pix]
P apparent power (equal to true power given par MEG
driver oscillator?) = 0,7Watts (x 2 = 1,4 Watts)
P active power throw resistor = 0,17 milli Watts
COP = 0,67 ???
which power do I compute?
(P OUTPUT apparent power / P INPUT apparent power =
0,67)
(P OUTPUT real power watt on resistor / P INPUT
active power throw resistor = 0,00019)
---------------------
EXPERIMENT 2
----------------------
LINleft=50mH LINright=48mH
LOUTleft=11,90H LOUTright=11,94H
CequivRIGHTload=188pF
CequivRIGHTload=187pF
MOV1=MOV2=420V (DNR14D431K)
Resistor=12ohms (10Watt, ceramic, non inductive)
(same resistor for INPUT and OUTPUT measurements)
MEG driver consumption:
V no load=29,1V
I no load=45,4mA
(P no load= 1,32 Watts)
V load=28,8V
I load=0,13A (large imprecision due to multimeter
200mA fuse crash, I have used another calibration,
10A)
(P=3,8 Watts, beetween 3,5 and 4 Watts I presume)
INPUT oscilloscope: (on picture: 55pix/div)
chA=1V/div [1,5151515 mA / pix]
chB=1V/div (probe 1:10) [0,18181818 V / pix]
T=50 micro sec [0,90909091 micro sec / pix]
P apparent power (equal to true power given par MEG
driver oscillator?) = 1,32Watts (x 2 = 2,64 Watts)
P active power throw resistor = 222 milli Watts
OUTPUT oscilloscope:
calibrated measurements:
chA=0,1V/div
chB=20V/div (probe 1:10)
T=50 micro sec
uncalibrated measurements: (on picture: 55pix/div)
chA=0,1V/div [0,151515 mA / pix]
chB=20V/div (probe 1:10) ratio 1/0,71 -->
28,17V/div (1:10) [5,121639 V / pix]
T=50 micro sec [0,90909091 micro sec / pix]
P apparent power = -0,32 Watts ( x 2 = 0,64 Watts)
What's the meaning of this minus sign?
P real power watt on resistor (usable) =
0,000995Watts (x 2 = 1 milli Watts)
COP = 0,48 ???
which power do I compute?
(P OUTPUT apparent power / P INPUT apparent power =
0,48)
(P OUTPUT real power watt on resistor / P INPUT
active power throw resistor = 0,0045)
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