Voltage maintenance apparatus

Details Voltage maintenance apparatus Voltage maintenance apparatus

1974-10-07

1976-09-21

Heyman, John S.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307238, 307247A, H03K 102

Patent

active

039821412

ABSTRACT:
A capacitor in parallel with a CMOS memory is used, in the event of a power outage, to apply a sufficient temporary voltage to the memory to maintain the stored data. Data storage retention time is maximized by a resistor, connected between the capacitor and the memory, having a resistance R approximately given by

REFERENCES:
patent: 3322974 (1967-05-01), Ahrons et al.
patent: 3597629 (1971-08-01), Bartlett
patent: 3636530 (1972-01-01), Mark et al.
patent: 3870905 (1975-03-01), Chikazawa

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