Methods and apparatus for providing uninterruptible power are provided by aspects of the invention. One aspect is more particularly directed to an uninterruptible power supply for providing power to a load. The uninterruptible power supply includes an input to receive input power, an output to provide...http://www.google.se/patents/US7737580?utm_source=gb-gplus-sharePatent US7737580 - Method and apparatus for providing uninterruptible power
