Research of process in bistable system when passing the mix of the harmonious signal and white noise

In the work the mechanism of compound harmonic signal and noise through the bistable system which role carries out Schmitt's trigger is considered. Dependence of signal-to-noise ratio on different factors is shows. Necessary conditions for ensuring increase of the signal-to-noise ratio at the output of the system are defined. The decision on practical implementation of the effect in electronic circuits of various purposes is submitted.