The study addresses the issue of heterogeneous findings on optimized half divergence angle of micronozzles used for propulsion. The performance and flow characteristics are compared at two distinct operating conditions, i.e., when the flow is mostly subsonic and supersonic in the divergent section. Results show an optimum divergence angle and length, maximizing the performance for a specific operating condition and nozzle size. It is noted that the inconsistencies in literature is mainly due to exploratory efforts of small data sets.

High frequency link bidirectional converters are characterized by a high frequency inductor current. Superior dynamic performance and saturation prevention requires sensing of this high frequency current and high bandwidth ADCs for subsequent signal processing. Typically Hall effect based sensors, having their own reasonable footprints and volume, are directly mounted on the power bus bar. This makes the realization of a highly compact bus bar structure more difficult. A sensorless current envelope tracking based scheme has been proposed which also do not require any high bandwidth ADCs.