Title :
Emergency power supply for small computer systems
Author :
Ueno, Fumio ; Inoue, Takahiro ; Oota, Ichirou ; Harada, Ikko
Author_Institution :
Fac. of Eng., Kumamoto Univ., Japan
Abstract :
A small size emergency power supply was investigated. This was realized by adopting a quick detector of momentary power failure and a compact DC-DC converter. The power failure detector has a novel type of T-V (time-voltage) conversion using an SC (switched capacitor) integrator and can detect power failures at its earliest stage. The DC-DC converter was constructed by an SC transformer in which the voltage of each stage increases according to the form of the Fibonacci sequence. The proposed power supply is supplied with power from chargeable batteries for several minutes, while the computer system saves important data to an auxiliary memory such as a disk and can complete its emergency quit operation. The circuit configurations, operations and experimental results are presented
Keywords :
emergency power supply; power convertors; power supplies to apparatus; DC-DC converter; Fibonacci sequence; SC integrator; SC transformer; auxiliary memory; chargeable batteries; circuit configurations; emergency power supply; emergency quit operation; momentary power failure; power failure detector; small computer systems; time-voltage conversion; Capacitors; Circuits; DC-DC power converters; Detectors; Emergency power supplies; Power engineering computing; Power supplies; Power system protection; Uninterruptible power systems; Voltage;
Conference_Titel :
Circuits and Systems, 1991., IEEE International Sympoisum on
Print_ISBN :
0-7803-0050-5
DOI :
10.1109/ISCAS.1991.176549
