At least one aspect is directed to an uninterruptible power supply that includes a first input to receive a first input voltage from a first voltage source, a second input to receive a second input voltage from a second voltage source, and a boost circuit coupled to the first input and the second input....http://www.google.fr/patents/US7402921?utm_source=gb-gplus-shareBrevet US7402921 - Method and apparatus for providing uninterruptible power
Method and apparatus for providing uninterruptible power
