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Background. Proof of the possibility of applying the method of aggregate measurements to determine the electrical parameters of three-element resonant electric circuits. Materials and methods. The developed methods, calculation ratios, calculation and modeling results using the MathCAD and PSpice programs are presented. Results. A technique is proposed for aggregate measurements of the parameters of three-element resonant electric circuits, as well as a technique for estimating the errors of aggregate measurements of the parameters of resonant electric circuits. In the above example, relative simulation errors of the resonance frequency, quality factor and parameters of the elements of the three-element resonant circuit, not exceeding ± 1.5%, were obtained from the simulation results. Conclusions. The possibility of applying the method of aggregate measurements to determine the electrical parameters of three-element resonant electric circuits by solving a system of equations compiled taking into account the measured values of the resonant frequency, quality factor and maximum voltage at the output of the measuring circuit at the resonant frequency is proved. The use of the method of aggregate measurements to determine the parameters of resonant electric circuits makes it possible to significantly simplify the hardware part of measuring instruments and get rid of the errors in analog transformations of the output voltage of the measuring circuit.