Search for: [Abstract = "The paper presents results of research on the metrological properties of known and the latest algorithms for determining the amplitude of a sinusoidal voltage based on a selected frequency estimator. Least Squares algorithms \(LS\) and its extended version \(ELS\), Total Least Squares \(TLS\) and four frequency domain algorithms based on the Discrete Transform Fourier \(DFT\), including one iterative algorithm, were analyzed."]