Volatile memory support system

Details Volatile memory support system Volatile memory support system

1974-12-16

1976-09-14

Fears, Terrell W.

Communications: electrical

Digital comparator systems

340173DR, G11C 1140

Patent

active

039809358

ABSTRACT:
An automatic support system for a volatile memory which provides maintenance voltages to such memory upon the interruption of normal operating voltages and which permits the intentional termination of operating voltages with the provision of maintenance voltages. The main power inputs for the memory are applied simultaneously to a primary power supply and secondary supply, the secondary supply providing the required memory maintenance voltages. In addition a battery supply is provided as backup for main power failure. A voltage regulator controlled by an electronic power switch is operative to provide the necessary maintenance voltage to the memory making use of the available supplies in a preferential order of primary, secondary power supply and battery supply.

REFERENCES:
patent: 3859638 (1975-01-01), Hume
patent: 3870901 (1975-03-01), Smith

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