chemical current sources

The considered problem is a part of the general problem of fluctuation and noise studies of chemical current sources. The measurements were made on a chain of two identical elements, providing mutual compensation of the constant component. The recorded noise signal covered a range from 10 Hz to 1200 Hz. It was found that the analyzed signals are stationary Gaussian random noise with a nearly uniform spectrum. It is shown that the studied noises can be identified as Johnson noises arising from the resistive impedance of the chemical current source.

The study relates to the general problem of noise research in electrochemistry. The special issue of recognition of a weak signal against the background of equipment noise was considered . Chemical power sources were used as an object. The measurement results were analyzed using a standard model including the noise voltage and noise current of the equipment. The criterion of correctness of the model was compliance with the quadratic law of addition of components of a random noise signal.