M.A. Romashchenko

One of points of maintenance of requirements EMC is the norms limiting conducted interferences, radiated system in feeding chain. In a case if they exceed the set requirements it is necessary to apply measures on their suppression which are usually reduced to installation of the filters located on an input of the device. Taking into account that conducted interferences contain two independent components - common-mode and differential-mode, occurrence having different physics it is necessary to apply filters of different designs to struggle against them. Besides, for effective suppression filter parametres should be picked up taking into account a frequency range which EMC does not correspond to requirements of standards. Thus, there is a problem of operative definition of type of a prevailing component in conducted interferences, a frequency range, and distribution of amplitudes in this range. In article the way of recognition EMI in electronic systems on the basis of the independent componental analysis and statistical pro-cessing is considered. At method use it is not required additional selective chains, RF transformers or splitters. It allows to get rid of undesirable parasitic effects in an analyzed range. The information on parametres conducted interferences in the beginning gathers, and then by means of statistical processing of this data the conclusion about type prevailing components becomes. Are spent practical the technique application, allowing to draw a conclusion on working capacity and efficiency of a technique. The received dependences are presented in article.