EEVblog #504 - UPS Tutorial & Teardown

Dave explains the three main methods of Uninterruptible Power Supply design - Offline, Online, and Line Interactive. And then opens an APC 2200XL rack mount UPS to see how well it matches the classic block diagram theory. Will there be any surprises? Schematic: Patent: Method and apparatus for providing battery charging in a backup power system EEVblog Main Web Site: EEVblog Amazon Store: Donations: Projects: Electronics Info Wiki: Теги: ups,Uninterruptible Power Supply,apc,patent,patent application,power supply,desing,tutorial,how to,transformer,online ups,offline ups,line interactive ups,how it works,pwm,battery charging