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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 HERE
Patent: Method and apparatus for providing battery charging in a backup power system

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