Patent ID: 6016017
Filing Date: 2000-01-18
Classification: H02J

Abstract:
A system for providing an uninterrupted supply voltage to a node, said system comprising:a regulator temporarily receiving a first voltage .vertline.V.sub.1 .vertline. and temporarily providing a second voltage .vertline.V.sub.2 .vertline. to said node;a battery unit continuously providing a third voltage .vertline.V.sub.4 .vertline. to said node;a switchable sensor which is temporarily coupled to said node to measure said second voltage .vertline.V.sub.2 .vertline. and to provide a measurement signal to said regulator, where said swichable sensor has a switch controlled by said regulator for disconnecting said sensor from said battery unit when said regulator does not provide said second voltage .vertline.V.sub.2 .vertline. to prevent current backflow from said battery unit to said switchable sensor.