Abstract: A DC motor circuit is provided for an automobile accessory that includes biplolar input lines for driving an accessory motor. A bridge rectifier coupled to the bipolar input lines generates a unipolar output. A transient voltage suppressor is connected in parallel with the bridge rectifier. A voltage regulator is coupled to the unipolar output for generating a regulated DC voltage. A position encoder is powered by the regulated DC voltage.

Abstract: A non-contact seat position system is provided. The system includes a lower seat track, an upper seat track, a target and a sensor. The upper seat track is positionably connected to the lower seat track, whereby the upper seat track may be positioned into a desirable location. The target is connected either to the lower seat track or the upper seat track, and the sensor is connected to the other of the lower seat track and the upper seat track. The sensor has a line of sight with the target, wherein the sensor when powered, outputs a sensor signal determined from a reflected signal coming from the target. In a first embodiment of the system, the sensor is an infrared sensor. In a second embodiment of the system the sensor is an optical sensor. A method of non-contact seat position system determination is also provided.