Abstract: The innovation specified herein effects optimal power transfer at power factor approaching unity for varying loads. The Luminaire load example embodiment can emit high power photo-flux radiance constructed by resonance while exhibiting a high degree of parametric autoregulation providing enhanced luminaire reliability with minimal semiconductor components and optimal EMC compliance. One application of such autoregulation exploits a contrived dark phase of zero LED current and consequent zero photoflux to exploit zero current switching between columns of different wavelengths for say, Visual light communications, fluorometry and insolation emulation for horticulture, polymer science, or other photochemistry.