A device for preventing bearing damage from currents through a three-phase motor is provided, including a shield for winding and copper wire within each stator slot of a motor. The audio decoder comprises a signal combiner configured to overlap-and-add-time-domain representations of subsequent audio frames encoded in different domains, in order to smoothen a transition between the time-domain representations of the subsequent frames. If the radius of curvature is taken as R9 and the focal length of the entire system is taken as f, the imaging lens satisfies a conditional expression given below:1. This system replaces a multi-step process with a single step process to provide a catalytically active surface that can be utilized to reduce ground level ozone and other atmospheric pollutants. One or more round or oval intermediate loops extending radially outward may also be provided.