A system, which may be a propulsion system or a vehicle having a propulsion system, for example, an air-vehicle, a land vehicle or a marine vehicle, includes a gas turbine engine operative to drive a propulsor. The bolts have bolt heads in the region of the backsides of the supporting plates facing away from the mold plates. Both the stacked inverter and the transmission gate provide beneficial reductions in static power consumption in comparison to conventional multiplexer designs.