Power supply system for an electronic apparatus having memory

Details Power supply system for an electronic apparatus having memory Power supply system for an electronic apparatus having memory

1985-12-24

1987-06-30

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Plural supply circuits or sources

Substitute or emergency source

307 64, 307 87, 328258, 361 90, H02J 906

Patent

active

046773118

ABSTRACT:
A power supply system includes a main power unit for supplying power necessary for the operation of an electronic apparatus including a memory, an auxiliary power unit for supplying power necessary for retaining the memory contents, and a battery serving as a back-up of said main and auxiliary power units for supplying power necessary for retaining the memory contents. The memory is supplied with power from the main power unit when it is in the power-on state, from the auxiliary power unit when the main power unit is in the power-off state, and from the battery in the event of a.c. power failure.

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