| 摘要 |
A battery backed-up power supply and a method of operating the same to test a battery therein. In one embodiment, the power supply includes: (1) a transformer having a main power primary winding, an auxiliary power primary winding and a secondary winding, (2) a main power converter, coupled to the main power primary winding, that provides main power received from a main power source to the main power primary winding and (3) an auxiliary power converter, coupled to the auxiliary power primary winding, that provides auxiliary power received from a battery to the auxiliary power primary winding when the main power source is interrupted and is further selectively activatable while the main power source is operational to discharge the battery through the transformer and thereby test the battery.
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