Patent
Backup power system for dynamic memory
TLDR
A power supply system for a dynamic memory includes a main power supply, a backup power supply and a power down detection circuit which are all connected in parallel across the input of a DC/DC converter as discussed by the authors.Abstract:
A power supply system for a dynamic memory includes a main power supply, a backup power supply and a power down detection circuit which are all connected in parallel across the input of a DC/DC converter In turn the DC/DC converter supplies regulated power to the dynamic memory On interruption of the main power supply, the backup supply provides input power to the DC/DC converter only as long as the power sensed by the power down detection circuit is adequate for the DC/DC converter to maintain a bit pattern stored in the dynamic memory On sensing inadequate input power to the DC/DC converter the backup supply is automatically disconnectedread more
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References
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Patent
Memory device having backup power supply
Tsuyoshi Matsushita,Yoshiaki Ito +1 more
TL;DR: In this article, a memory device includes a reset signal generator for generating reset signals when the output voltage from a main power supply circuit to supply a driving voltage to a memory decreases to a first predetermined voltage.
Patent
Stand-by power system
TL;DR: In this article, the main power (e.g. an alternating voltage) is applied to a data processing system through a switch in a first state of the switch operation and an arm is movable to a first terminal to obtain a second state of switch operation.