An electronic system (6) has a power management logic circuit (920). A first power supply connector (1902) is electrically coupled to the power management logic circuit (920) and a second power supply connector (1904) is also electrically coupled to the power management logic circuit (920). The power...http://www.google.com/patents/US5721933?utm_source=gb-gplus-sharePatent US5721933 - Power management supply interface circuitry, systems and methods