енергетичний спектр

ABILITY OF IDENTIFYING THE UNRELIABLE ELEMENTS OF ELECTRONICS

Hidden defects can turn into obvious defects and characteristics of electronic elements become inappropriate. Therefore, the techniques of non-destructive diagnostics of inner structure state are of great importance. One of these techniques is the diagnostics of electronics by their own noise, which advantageously differs by low time consuming and absence of the risk of damage of the element under investigation. Noise measurements are capable to detect the defects in a material with a sensitivity that cannot be reached by other methods.

Impact of the investigated system’s state on the equivalent measurements dispersion

This paper presents the results of equivalent measurements of electrical resistance of two identical resistive coils. It is suggested that the difference between the RMS of investigated coils is formed as result of their non-equilibrium states. The energy spectrum of resistance fluctuations of investigated coils and the frequency range within which the energy spectrum changes unsignificantly, are determined.