Memory protection arrangement

Details Memory protection arrangement Memory protection arrangement

1977-04-27

1978-10-24

Schaefer, Robert K.

Electrical transmission or interconnection systems

Plural supply circuits or sources

Substitute or emergency source

307 66, 307200A, 365229, H02J 900

Patent

active

041223594

ABSTRACT:
A memory protection arrangement includes a primary power supply unit and a back-up battery. The back-up battery supplies maintenance energy to the memory itself, the battery being automatically effective whenever the primary power supply voltage decays to a value less than that of the battery. There is also provided apparatus which is responsive to a failure of the main power source to effect the application of a control signal to an input of the memory to disable the memory input from responding to spurious signals during a power-down condition.

REFERENCES:
patent: 3859638 (1975-01-01), Hume

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