Chaotic variations of electrical conductance in powdered Pd correlating with oscillatory sorption of D2

2017 ◽  
Vol 19 (10) ◽  
pp. 7040-7053
Author(s):  
E. Lalik ◽  
G. Mordarski ◽  
R. P. Socha ◽  
A. Drelinkiewicz
Keyword(s):  
Electric Current ◽  
Electrical Conductance ◽  
Thermokinetic Oscillations ◽  
Palladium Powder

Periodic thermokinetic oscillations correlate with chaotic fluctuations of electric current passed through palladium powder during sorption of deuterium.

scholarly journals Bounds for the electrical resistance for homogeneous conducting body of rotation

2021 ◽  
Vol 11 (5) ◽  
pp. 104-122
Author(s):  
István Ecsedi ◽  
Ákos József Lengyel ◽  
Attila Baksa ◽  
Dávid Gönczi
Keyword(s):  
Steady State ◽  
Lower Bound ◽  
Electric Current ◽  
Electrical Resistance ◽  
Current Flow ◽  
Electrical Conductance ◽  
Upper Bounds ◽  
The Body ◽  
Lower And Upper Bounds ◽  
Electric Current Flow

A mathematical model is developed for the steady-state electric current flow through in a homogeneous isotropic conductor whose shape is a body of rotation. The body of rotation considered is bounded by the coordinate surfaces of an orthogonal curvilinear coordinate system. The equations of the Maxwell’s theory of electric current flow in a homogeneous solid conductor body are used to formulate the corresponding electric boundary value problem. The studied steady-state conduction problem is axisymmetric. The determination of the steady motion of charges is based on the concept of the electrical conductance of the conductors the inverse of which is the electrical resistance. The exact (strict) value of the electrical resistance is known only for bodies with very simple shapes, therefore, the principles and the methods that can be used for creating lower and upper bounds to the numerical value of electrical resistance (electrical conductance) are important. The derivation of the upper and lower bound formulae for the electrical conductance of axisymmetric ring-like conductor is based on the two types of Cauchy–Schwarz inequality. The condition of equality of the derived lower and upper bounds is examined. Several examples illustrate the applications of the derived upper and lower bound formulae.

Extended electric power sources

2018 ◽  
Author(s):  
T.A. Konev ◽  
V.A. Kuzmin ◽  
E. Yu. Mutovina ◽  
R.D. Puzhaykin ◽  
Vladimir Salomatov
Keyword(s):  
Electric Power ◽  
Electric Current ◽  
Load Resistance ◽  
Active Power ◽  
Operating Voltage ◽  
Power Sources ◽  
Distributed Parameters ◽  
Analytical Expressions ◽  
Characteristic Resistance ◽  
Length Effects

Chemical sources of current are investigated as lines with distributed parameters. Analytical expressions are obtained for the voltage and active power values of the source at different distances from the beginning of the cell as well as dependences of the working voltage and active power on the source length. Effects of a reduction in the operating voltage and active power are due to the flow of electric current along the source during operation. The magnitude of these effects depends not only on the length of the source, but also on the ratio of characteristic resistance to the load resistance.<br>

Hybrid System Using Acoustic Emission and Electric Current for Fuzzy Diagnosis of Surface Wear in Gearbox Coupled to Induction Motor

2017 ◽  
Author(s):  
Leonardo José Cavalcante Vasconcelos ◽  
ARLESON KENNEDI FRANÇA DOS SANTOS ◽  
Dalton Valadares ◽  
Alexander Sena
Keyword(s):  
Acoustic Emission ◽  
Electric Current ◽  
Induction Motor ◽  
Hybrid System ◽  
Surface Wear ◽  
Fuzzy Diagnosis
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