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Short circuits in the electric circuits can be modeled by various equivalents. In the article problem of change of the input impedance of the coil is considered at short circuit of one or several turns.
The coil with the core is considered. It is supposed, that the capacity between the next coils and capacity between a coil and the core are set. Magnetic communication between the next coils is taken into account. The equivalent circuit of the coil in frequency area is resulted in a kind of in cascade connected 6-poles.
The problem of registration patient electrocardiogram (EKG), if patient taking place in electroconductive liquid is considered. For solving problem the electrodes of the recording device are fixed inside capacity filled by electroconductive liquid, in which the body of the patient is taking place.
The perspective modern method of the early equipment diagnostics is the analysis of the own electromagnetic radiations (EMR) on the wide range of frequencies. The experience of application of the method is stated. The inspections of the HV equipment EMR were carried out in ranges of frequencies 40-460 MHz. On an offered technique more than 200 phases of the HV transformers of a class 110, 220, and...
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