A Distributed Power Architecture for the System 75 Digital Communications System

The distributed power architecture for the System 75 Digital Communications System offers performance that would be difficult to achieve with conventional power architectures. With distributed power, each circuit-card shelf is powered by its own off-line switcher (OLS) power units. This limits the effects of a power-unit failure and contributes to increased system reliability. An optional battery reserve system ensures uninterrupted power without an external uninterruptible power system. The result is that System 75 is a low-cost, easy-to-repair digital communications system.