A half-bridge variable differential transformer position sensing system that includes a transducer having a stator with an inductive coil having a center tap configured to provide an output signal. The copolymer enables the formation of an antifouling coating film which exhibits less cracking tendency, excellent adherence, less peeling tendency and controlled hydrolysis rate resulting in excellent antifouling performance and properties. When an air bag starting to inflate presses any one of the panel members of the movable reinforcing panels upward after an air bag system is operated, regions corresponding to the movable reinforcing panels of the door panels are deformed outward. Comparator circuits and current-mirror circuits are often incorporated into circuits such as converter circuits. The surface structure has an arrangement and interacts with radiation and the substrate to at least substantially transmit or attenuate radiation at a wavelength and an energy below a threshold energy, and substantially reflect radiation at the wavelength and an energy above the threshold energy. The reduction in equipment size achieved with this rapid treatment time allows the utilization of treatment units small enough to be easily transported to remote locations or installed in the restricted space environment existing in ships and submarines.