Study on the electromagnetic field effect on linear electronic equipment

Schemotechnical methods of noise stability electronic equipment (EE) design are under study. Noises arising under the effect of electromagnetic fields are classified into primary and indirect noises. Primary induced noises are the noises due to the field effecting EE element parameters and indirect induced noises are the noises due to alternation of current and charge distribution in EE without variability device parameters. The review of basic galvanomagnetic effects in standard EE elements showed that it is possible to neglect primary noises up to magnetic field intensities of 105-106 A/m and electric field intensities of 106 B/m. Approximate integral equation describing the indirect noise formation in linear and stationary systems in respect to exciting action is given. On the basis of relations obtained, several methods of magnetic indirect noise compensation are suggested. Techniques of approximate calculation of indirect noise formed by electric component of exciting action are considered. The above experiments confirmed the correctness of expressions obtained and efficiency of compensation methods