Solid State Technology Volume: 3 Issue: Publication Year: 2020 5598

Solid State Technology 
Volume: 63 Issue: 5 
Publication Year: 2020 
5601
Archives Available @ www.solidstatetechnology.us 
. (6) 
The magnitude of the magnetic permeability of the body corresponds to the expression: 
. (7) 
The equivalent diameter of a circle whose area is equal to the core cross section is determined 
by the equation: 
d=
, (8) 
here S core cross-sectional area in sм
2
. 
In the calculations it was taken: l =64sm S=49sm
2
, steel permeability =500, I=1,25A, 
. From formula 3 obtained the magnetic field strength in the center of the core 
Oe=0,7А/m, set values
=500, 
32. The magnitude of the magnetic 
induction (В=0,282G=0,282 10
-4 
=0,0282mТ=28,2mkТ). This field is much weaker than the 
field of terrestrial magnetism В
3
=0,5Oe=0,05mT=50mkT. The value of the electromotive 
force induced in two locomotive coils is determined by the formula (1) and turned out to be 
equal Е
2
=0,195В. The direct measurement of the EMF at the terminals of the receiving coils 
turned out to be somewhat less than those obtained in the calculations, namely Е
2
=0,185В. 
This is due to the fact that the distribution of magnetic induction along the core is uneven. 
The calculation results the currents in the rails must be at least 1.5A. A lower current value 
leads to noticeable interference due to the fact that the field of the rail circuit is much less 
than terrestrial magnetism. Therefore, the slightest shaking of the receiving coils during 
reception causes significant interference, this is confirmed by the oscillograms shown in Fig. 
4. 
V
o
lt
ag
e,
V
Time, s
current in rails I=0.25А 
current in rails I=0.5А 
current in rails I=1А 
current in rails I=1,25А 
current in rails I=1,5А 
Fig. 4. Oscillograms of currents in rails in the presence of shake coils on locomotives 
When considering issues related to the phenomena of magnetization and demagnetization of 
products of rail chains, it became necessary to combine all types of interactions [5]. Rail 
chains are affected by both gravitational interactions and internal intermolecular interactions 

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