hex@tub.UUCP (05/27/87)
Subject: Joe Newman's claims - Experiments on large coils
I'm posting the following for a friend. He is student at our
Technical University in West-Berlin (Germany) and doing a technical
measurement study on a rebuild Newman machine.
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I own the mentioned book of Joe Newman 'The Energymachine' now for about
13 month's and in December 1986 I decided to make experiments with very
large copper coils.
I began mesearements at our University with a 5 kg copper-coil of 0.17mm
diameter copper wire and rectified ac-to dc-voltage of 600- 1200volt dc.
This coil has had an inductance of 360 Henries and a dc resistence of
21 kOhms. Because of the capacitance between the windings the coil has a
resonance frequency of 1400 Hertz.
I used a electromagnetic switch relay, with was driven by a function
generator, to switch on and of the the voltage across the coil.
The current increased like theory predicts it with a '1-e^t/tau 'function
and a cobalt-samarium magnet was pulled out of the coil because of the
generated magnetic field.
Now the interesting thing about it is,if I open the relay switch, there
is a current peak inside the coil and a huge spark appears at the switch.
But first I thought this is only the stored magnetic Energy 1/2L*I^2.
These things are really hard to measure, because the voltage goes so .
high.
Recently I met a West German student who also works on a rebuild Energy-
machine and who has wounded 70 kg of 0.25 mm diameter copper wire into a
coil which looks like the coil described in Newmans book on page 36.
He has also stacked 11 bariumoxid speaker magnets together to get a large
magnet ,that could rotate besides the coil.
Then he has build an opto-electronic driven magnetic relay switch
commutator, so that his battery voltage of 335 volts (stacked 9 volt
batteries) could produce a changing magnetic field inside the coil every
180 degrees of the rotating magnet.
During every 180 degree-rotating cycle of the magnet the current of the
coil is 10 times switched off the batteries and then the coil is shorted
out immeadiatly(a few mikroseconds delay).
And at the moment of the short out there apears an anomalous high current
peak of about 400 mA inside the coil which has the same look like the
staircase current pulse in Newmans book on page 37.
Because we didn't knew at that time, that it only depends of getting
these strange high current pulses we didn't care about them enough at
that time.
One month ago this student called Sven Reuss from Bad Nauheim,West
Germany came to our University at West-Berlin for making a measurement
of his machine.
He now has had bought electromagnetic vaccuum switches from Siemens at a
cost of about 800 DM to obtain 'better ' results.
He now had changed only the current commutator with his new switches.
So we measured an efficancy of about only 70 % of produced heat inside
the coil (i^2*R) versus the input of electrical energ from the
batteries (constant voltage*middle value of input current).
The rest 30% of input power was going into the friction losses of the
rotating magnet and was transmitted by RF-frequency due to fast cutoff of
input current.
So we were very disapointed, that we didn't get better results with the
new very expensive switches.
But the next day I have had only two hours time to make same new
experiments before the departure of Sven Reuss and his coil.
So I took a simple electromagnetic switch which was again driven by a
function generator and build up a circuit in which the coil was switched
to the batteries (335 volts) and then the coil was shorted out with a
time delay of about 3 milliseconds.
There suddenly apeared again this high current pulses. They had a time
length of 2.5 milliseconds and an amplitude of about 30 to 40 milliamps.
The strange effect is that they apeared in the opposite direction on the
scope than they were predicted by theory. Theory says,that the
current inside a coil doesn't jump and flows in the same direction, if
the coil is shorted out. Not so with our pulses.
They flow into the 'false' direction.
Why???
Maybe there is also a capacitance effect of the large coil responsible
for the anomalous current pulses, but capacitance of the coil is only
about 800 pF. The major effect should come from the inductance that is
about 3500 Henries of this coil. The dc resistance is 46.4 kOhms and
the current inside the coil raises to about 5 milliamps when the
battery voltage is switched across the coil,then the switch interrupts
every 50 milliseconds the input current.
During the short out period firstly the anomalous puls apears and then
the current goes back to about 5 milliamps and decreases like theory
predicts (decreasing stored magnetic Energy).
So we also observed, that this anomalous current puls is not reduced in
Amplitude if the switching rate changed but the amplitude gets bigger if
a magnet induces a dPhi/dt into the coil.
So lets take a look to the results :
1. There are really these Anomalous Current Pulses
2. They only apear if there is a spark at the commutator (switch).
3. A spark only apears if the input current is stopped abruptly by
mechanically switches and the induction voltages raises to very
high voltages (a few 50 kvolts).
4. The lengths (time duration) of the pulses increases with the weight of
the coil.(kg).
5. The rotating magnet increases the amplitude of these pulses.
6. If these pulses occur more often in time, due to higher switching
frequency, the current inside the coil highly increases and the heat
energy (I^2 * R) could be bigger than the electrical input energy.
The next measurements we will do is to prove if these current pulses do
really generate a heat inside the coil resistance or if that are only
capacitance discharge pulses who do not produce any heat inside the coil
resistance.
Critics on the National Bureau of Standards Test :
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NBS has really made false measurements, because they switched parallel
resistors across the coil.
So no high induction voltage could occur, so no spark appears and they
grounded the coil, so that the RF-current was shorted to ground.
Also they did only measure the electrical efficieny and not the whole
system efficieny.
So the Newman Energycar still works with the same batteries after 45
hours of running !!!
It looks really like the batteries are charged back by these current
pulses !
If anybody has similar experience with Newman technologie, please give
me a message in this network or write or call
Stefan Hartmann
Keplerstrasse 11 B
1000 Berlin 10
West Germany
Tel.: 30/ 344 23 66
Thank You for Your attention
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