Re:Missing the point ( I did not) (Score 1)

AAP's Internal UPS uses one (1, uno, single) step converter. AC->DC one time. (Did I say I opened up the power supply?)When AC fails, DC from battery directly works on the computer systems. When AC is fine, Ac will be converted to DC, and the DC will charge the battery, and support the computer system as well. So, ther is no more AC-DC-AC-DC crap anymore. (I am not sure about IPPS's Internal UPS.)