The present invention relates to the field of motion/movement sensors, detectors, and/or monitors, as well as other types of sensors. In particular, the present invention may provide, for example, a large pulsed output voltage in response to very low (or slow) sensed movement or environment changes,...http://www.google.com.au/patents/US7102271?utm_source=gb-gplus-sharePatent US7102271 - Method and apparatus for a high output sensor system
