Design and Assembly of a Ring Wave Generator

Abstract

This thesis presents the design and assembly of a ring wave generator developed in accordance with the requirements specified in the international standard IEC 61000- 4-12. Component values were determined through analytical calculations and circuit simulations, with all components rated for a 4 kV ring wave output. Procuring a reliable high-voltage switch proved particularly problematic, leading to the implementation of a triggered spark gap utilizing gas discharge tubes. The assembled generator demonstrated low parasitic elements across all components. However, accurately estimating parasitic values in advance proved challenging, resulting in deviations between simulated and measured waveforms. Most notably, and unlike what was observed in simulation, the waveform exhibited minor variations across different voltage levels, particularly in the damping characteristics of the ring wave. Although the measured open-circuit voltage rise time of 720 ns exceeded the standard’s limit of 650 ns, all other parameters were successfully met, where frequency was measured between 93.3-96.5 kHz and peak ratios between 0.55-0.8.