JPH04340335A - Backup system - Google Patents

Backup system

Info

Publication number
JPH04340335A
JPH04340335A JP3107634A JP10763491A JPH04340335A JP H04340335 A JPH04340335 A JP H04340335A JP 3107634 A JP3107634 A JP 3107634A JP 10763491 A JP10763491 A JP 10763491A JP H04340335 A JPH04340335 A JP H04340335A
Authority
JP
Japan
Prior art keywords
battery
unit
backup
monitoring
power
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP3107634A
Other languages
Japanese (ja)
Inventor
Sadao Miyazaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP3107634A priority Critical patent/JPH04340335A/en
Publication of JPH04340335A publication Critical patent/JPH04340335A/en
Withdrawn legal-status Critical Current

Links

Abstract

PURPOSE: To prevent failure of backup operation at the time of power interruption by additionally providing a battery voltage monitoring circuit thereby detecting abnormality in advance and to prevent useless consumption of power through positive operation when backup operation is not required.
CONSTITUTION: A backup unit (BUC) 1 is provided with a circuit 30 for monitoring the battery voltage Vdc in received from a battery unit (BAT) 2. The monitoring circuit 30 is controlled to stop voltage monitoring operation when the battery unit 2 is not loaded, the battery voltage is abnormal, a converter unit 6 is abnormal or a battery check signal BATCHCK is ON. When it is commanded that the backup operation is not required, a switch MS3-1 is disconnected to interrupt output from the battery unit 2. Consequently, useless consumption of power in the monitoring circuit 30 can be prevented.
COPYRIGHT: (C)1992,JPO&Japio
JP3107634A 1991-05-13 1991-05-13 Backup system Withdrawn JPH04340335A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3107634A JPH04340335A (en) 1991-05-13 1991-05-13 Backup system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3107634A JPH04340335A (en) 1991-05-13 1991-05-13 Backup system

Publications (1)

Publication Number Publication Date
JPH04340335A true JPH04340335A (en) 1992-11-26

Family

ID=14464167

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3107634A Withdrawn JPH04340335A (en) 1991-05-13 1991-05-13 Backup system

Country Status (1)

Country Link
JP (1) JPH04340335A (en)

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Legal Events

Date Code Title Description
A300 Withdrawal of application because of no request for examination

Free format text: JAPANESE INTERMEDIATE CODE: A300

Effective date: 19980806