Patent ID: 7652393
Filing Date: 2010-01-26
Classification: H02J,Y02B

Abstract:
1. An uninterruptible power supply comprising: an AC I/O; an output in electrical communication with the AC I/O; electronic circuitry coupled to the AC I/O and the output and comprising a first circuit and a second circuit, wherein the first circuit includes a DC I/O and an input coupled to the DC I/O via the first circuit, the input adapted to be connected to a battery; a DC bus including a positive bus and a negative bus each coupled to the DC I/O, wherein the DC bus couples the first circuit to the second circuit; and a DC power source, different than the battery, coupled to the DC bus, wherein the first circuit is adapted to, in a first mode of operation, receive AC power from the AC I/O and convert the AC power to DC power, and in a second mode of operation, receive DC power from the DC power source at the DC I/O, convert the DC power to AC power and provide AC power to the AC I/O, and wherein the second circuit is further adapted to, in the first mode of operation, convert the DC power to AC power and provide the AC power at the output.