Uninterruptible power supply

Electrical transmission or interconnection systems – Plural supply circuits or sources – Substitute or emergency source

Reexamination Certificate

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C320S137000

Reexamination Certificate

active

06917124

ABSTRACT:
An uninterruptible power supply is disclosed that includes a digital controller comprising a plurality of microprocessors. These microprocessors are programmed and arranged to provide various control features heretofore unavailable using analog controllers of the prior art.

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