A seat assembly for supporting an occupant above a floor of an automotive vehicle includes a seat cushion extending laterally between spaced apart side members. The thin film BAW resonator includes an anchor section formed on a Si substrate, a lower electrode supported on the anchor section and positioned to face the Si substrate, a first piezoelectric film formed on the lower electrode, and an upper electrode formed on the first piezoelectric film. 2% yield strength value equal to or less than 90 MPa in a tensile test is formed into a rectangular conductor 10 for a solar battery having a rectangular cross section, and a surface of the rectangular conductor 10 for a solar battery is coated with a solder plating film 13, to provide a lead wire 20 for a solar battery. A second comparing circuit compares a second reference voltage from a second reference voltage circuit with the error voltage Verr and outputs a voltage ERRcomp. Also described are methods of making and using these elements. Cooling is facilitated by, for example, loosely wrapping the winding end turns, use of an asynchronous airflow source, andor directing coolant through conduits extending through the stator into thermal contact with the windings.