FIELD: measuring equipment, applicable in those fields of scientific and industrial activities, where knowledge of the sinusoidal voltage or current is required. SUBSTANCE: the method is characterized by the fact that two similar in value, but opposite in sign threshold voltages Un are set, that are lower of the measured sinusoidal signal in the value of amplitude, successively measured are time t1 between the first and second successive transitions of two similar in value, but opposite in sign threshold voltages and time t2 between the second and third successive transitions of one of the two similar in value, but opposite in sign threshold voltages, and the period of oscillations of sinusoidal signal T and its amplitude Um are determined by formulas: 
. EFFECT: period and amplitude of sinusoidal signal are determined by the results of measurement of time intervals. 1 cl, 3 dwg
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