The quality of energy is a matter to get a many more information from last four decades to industrialize interaction with the power grids and customers to use of instruments supported in its at representation in voltages and currents. The implementation in this field has to relatively slow at low frequency range with being of voltage dips about magnitude of voltage in milliseconds and frequency harmonics about of some kilo hertz’s. At high frequency range the modern energy equipments included in power grid system with grid communication like meter readings and controls at same frequency range. In this dissertation report, implemented the frequency range measurement techniques in time domain and frequency domain both to use of fluctuated waveforms and key of measurement factors will fluorescent light. So due to limit of harmonics will use high switching method and get more frequent use in all other small energy instruments for precision of emission and immunity systems. Reaction mechanism of fluctuations from frequency range will define several methods like narrowband, wideband and oscillations during recurrent. This is the major precision in values to understand the standard of thesis work.