bulbs amounted to about 8 watt. Especially striking in
this connection is the considerably higher current-power in
the bulb-circuit being about 12 times bigger than the current
coming from the two batteries.|
We have also absolutely made sure that from the batteries
no other conducters led to the apparatus than those into which
my instrument was built-in.
I have therefore tested the decrease of tension in the
single plates on a load of three lamps by means of a millivolt-
meter, make of Hartmann & Braun, Nr. 462375, in order to get at
least in an indirect way an explanation for the increase of
Regarding the Cause of the observed characteristics, especially the solution of the question, where the energy in the apparatus orginates, no explanation can be given yet, after the short and simple tests.
Solely the conjecture can be expressed that the magnet-
system is the source of the energy. If therefore seems
desirable to clear this point by further thorough and systematic
A judgment for the possible utilization of the phenomena,
observant in the apparatus, from the economical point of
view, I am, of course, not able to pass on after these short
Above all, however, it appears important that the part or parts of the apparatus, being possibly responsible for causing the observed phenomena, should be taken out in a way as simply as possible and be submitted to an examination in all directions.
Before finishing this, I wish to say that the results of the tests are put at the disposal of Captain Coler for which reason I enclose a copy herewith.
I should like to ask, however, the gentlemen in question not to mention my name and that of Professor Franke nor divulge the results of our tests without our express consent, or to make them known publicly and above all not in the press.
Results of Measuring
___________________________________________________________________________ Nr. Test with Charge Magnet Plate Spool External instrument circuit circuit circuit circuit ___________________________________________________________________________ Amp. Volt Amp. Volt Amp. Volt Amp. Volt 1 built-in - 0.21 0.5 - 6,4 - 6.3 - 6.0 2 idem 2 bulbs 0.21 0.5 0.16 4.7 0.06 4.3 3.1 3.5 3 idem 3 bulbs 0.21 0.5 0.22 4.0 0.075 3.75 3.7 3.0 ___________________________________________________________________________ Control of the buildt-in instruments: Of the battery circuits 4/5 built-in 3 bulbs 0.215 4.0 3.7 3.0 S&H.423820 0.215 6/7 built-in 3 bulbs 0.08 3.4 3.7 3.0 S&H.423820 0.070 8/9 built-in 0.21 0.5 S&H.423820 0.2 ___________________________________________________________________________
precision the series of the three battery circuits
____________________________________________________________________________ Control of the instruments in the external circuit 10 built-in 3.3 3.0 11 S&H423820 3 bulbs 3.08 2.30 12 S&H254159 2.95 13 built-in 2 bulbs 3.15 14 S&H423820 3.15 15 built-in 1 bulbs 4.1 16 S&H423820 4.45 ___________________________________________________________________________From the buildt-in tension meter of the external circuit estimations below 3 volt could not be read any more.
When slightly over 3 volt the instrument indicates correctly, when over 5 volt, the indication is somewhat too low.
The built-in current indicator of the external circuit points somewhat too high.
The control-instrument S.& H. 423820 is a precision continuous current-instrument (Millivoltmeter) for current and tension measurings. The control instrument H. & B.243159 is a hotwire-instrument.
Translation of a report by Professor W.O,Schumann
One of these spools is composed of copper sheets ( the spool is called the plate spool), the other one of a number of thin parallel connected isolated wires (called: spool winding), running parallel at small intervals to the plates.
Both spools can be fed by separate batteries; at least two batteries are necessary to put the spools at work.
The spools are arranged in two halves each, according to
the bifilar winding system.
According to the statement of the inventor, the production of energy principally takes place in these iron rods, and the winding of the spools plays an essential part in it.
As far as it was possible I convinced myself of the
conformity of the circuit with the mechanism.
In order to ascertain possibly concealed sources, the
apparatus was searched with a millivoltmeter, without using any
Installed in the apparatus were three current meter for
the currents from the three batteries, and furthermore current
and volt meters of the soft iron type for the current receivers.
(called: Dr. Sp.C.), and a turn spool millivoltmeter of the A.E.G., an ordinary laboratory instrument, also employable as a voltmeter, (called: Dr. Sp. A.E.G. C.).
While the apparatus fed two bulbs, the current delivery of the three current-supplying batteries was measured directly at the terminal clamps. The results are as follows:
l. current of the plate battery 48 mA ) ) 2. current of the spool battery 39 mA ) Dr. Sp. S. & ) H. C. 3. current of the exciter battery 170 mA )The indications of the built-in instruments were in unison with the statements of the S. & H. instrument.
The total capacity of the batteries of three elements each: 0.257 x 6 - 1.542 watt, (the tension of the batteries in reality being below 6 volt).
The possible capacity of the two bulbs according to the built-in soft-iron instruments was 3A x 3.5 v., that is 10.5 watt which means the 6.7 fold of the above-mentioned capacity.
Thereafter only one bulb was connected, and a seond one,
exactly of the same type, was regulated with a special
accumulator battery to get the same light.
1. current of the plate battery 28 mA 2. current of the spool circuit battery 23.5 mA 3. current of the exciter battery 180 mAThat means, if reckoned with a 6 volt battery tension, 6 x 0.232 - 1.392 watt.
The possible capacity of a bulb, fed by a special battery, and showing the same lightpower was 4.5 volt x 1.5 Am - 6.75 watt. Proportion of both efficiencies ca. 4.85.
Both instruments used for testing (measuring) from S. & H. and from the A.E.G. were then compared with each other by a current-voltmeter, the highest possible deviation being less than 10% which can therefore scarcely influence the result.
The apparatus, according to the statement of the inventor, is adapted now for current increase. The bulb-tension of 3-5 volt is less than the tension of the feeding batteries.
By changing over in the interior it would also be possible to use it for an increase of tension.
Then there was a test with the aid of the Dr. Sp. Milli- voltmeter from the A.E.G. to try the decrease of tension in the single winding halves of the plate spool on the right.as well as on the left side of the mecanism. (The form of the spool is that of a long small rectangle).
Tensions in Millivolt: Winding from the tap downward: Right Side Left Side 1. - 2. 0.24 l. 0.34 2, - 3. - 4. 2.6 3. 2.8 4. - 5. 8.4 6. 24 5. 12.4 6. 22 7. 22 8. 24.6 7. 28 8. 100-140 fluctuates much 9. 26 10. 25 9. 46 10. 30The tensions are distributed very unequally which must be due to current increases and decreases through the iron-cores.
Further measurements on the single parts could not be
carried through for the reason of getting impeded by the built-
in parts in the apparatus.
The next day I got a Hotwire-voltmeter "H. & B" (called: H. Dr. TH), and further a precision milliameter "S & H." (called: Dr. Sp. TH) at the Technical High School of Charlottenburg. With these instruments and those of the previous day the following tests were made:
1. Plate circuit 28 mA Dr. Sp. T H Lamp current 1.52 A Dr. Sp. S. & H. C. 1.60 A H Dr. T H 1.3-1.4 Built-in soft iron instrument Lamp tension 4.05 V H Dr. T H Lamp tension 4 V Built-in soft iron instrument
2. Spool circuit 28.5-30 mA Dr. Sp T H Lamp current 1.47 A Dr. Sp S. & H. C 1.56 A HDTH Lamp tension 3.8 V H Dr. T H 3. Exoiter circuit 0.173 A Dr. Sp S. & H. C Lamp current 1.5 A H Dr. T H Lamp tension 3.75-4 V H Dr. T H Spool circuit 30-30.5 mA Dr. Sp T HOnce again a comparison of capacity was carried through by using an equa1amp to that in the apparatus with an accumulator, and bringing it to the same brightness, as judged by the eye.
Lamp in accumulator circuit: tension 4 V Dr Sp S. & H. C 3.3 V Dr Sp A.E.G. C current 1.5 A Dr Sp S. & H. C Lamp in apparatus: tension 3.85-4.0 V H Dr. T H current 1.59 H Dr. T H Current in spool circuit 27-28.5 mA Dr. Sp T HThereafter the instruments with the measured current - and tension - figures were compared with each other:
1. Tensionmeter parallel on two accumulators: Dr. Sp A.E.G. C 3.2 V H Dr. T H 3.8 V Dr. Sp S. & H. C 4.2-4.3 V 2. Voltaelectrometer in line: H Dr. T H 1.47 A Dr. Sp S. & H. C 1.46-1.47
Even when taking into account the errors of the
instruments, the resulting multiplication of energy, in
principle, does not undergo any alteration through the
As a striking fact it should be mentioned that the spool
circuit having been at first always switched on alone, received
a current of 104 mA.
A definite judgment about the apparatus must be reserved by me until all parts have been singly tested, and until variations in the connections in the load and c have been undertaken.
After the present examination, carried through as care-
fully as the limited possibilities of experimentation
permitted, I must surmise that we have to face the exploitation
of a new source energy whose further developments can be
of an immense importance.
I do not believe in a deception. I deem it expedient to put the apparatus to a further test, and I believe that a further development of the apparatus and an assistance, given to the inventor, will prove justified and of great importance.
Report of Examination on Coler Apparatus
Time; 1.4.43 to 25.9.43
Time: l.4.43 to 30.6.43
Place: Physical Institute of the Technical University of Berlin
Report by Hans Coler and Dr. Heinz Frohlich
Due to the lack of sufficient knowledge of the complicated activity within the apparatus, and of the impossibility of explaining this in known terms, the success in starting the apparatus depended upon happy accident.
With the support of the OKM an attempt was made to examine and
measure the activities in the Coler apparatus.
It is therefore necessary, through a systematic basic research, to transfer the adjustment and other necesary procedure for starting the apparatus, from the domain of accident into a practical experimental procedure which is at any time reproducible.
1. HistoryDuring the years 1923 to 1926 the undersigned, Captain Hans Coler, basing his work on lay theories of electromagnetic and inductive activities, has developed an apparatus for generating electrical energy, wich delivered a considerably higher electrical output than was necessary to excite the