The control circuit is for a current sharing bus integrated in signal regulator modules, particularly voltage regulator modules, the circuit being of the Average Program type. A protective layer comprising an SiCN film is formed on the dielectric film. In addition to the direct benefits obtained from introduction of these agents, the laser cutting properties may be varied from the selective introduction of the various agents. It is thus possible to project an image having homogeneous brightness across the entire screen, which in turn makes it possible to project an image having no irregularities in color across the entire screen. The system also includes at least one arc fault detector electrically connected to the conductors between the slave controller and the loads, where the fault detector is capable of detecting an electric arc event.