JPS56664A - Battery display unit - Google Patents

Battery display unit

Info

Publication number
JPS56664A
JPS56664A JP7527179A JP7527179A JPS56664A JP S56664 A JPS56664 A JP S56664A JP 7527179 A JP7527179 A JP 7527179A JP 7527179 A JP7527179 A JP 7527179A JP S56664 A JPS56664 A JP S56664A
Authority
JP
Japan
Prior art keywords
voltage
battery
output voltage
availability time
vbl
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.)
Pending
Application number
JP7527179A
Other languages
Japanese (ja)
Inventor
Teruyoshi Minaki
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.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Hokushin Electric Corp
Yokogawa Electric Works 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 Yokogawa Hokushin Electric Corp, Yokogawa Electric Works Ltd filed Critical Yokogawa Hokushin Electric Corp
Priority to JP7527179A priority Critical patent/JPS56664A/en
Publication of JPS56664A publication Critical patent/JPS56664A/en
Pending legal-status Critical Current

Links

Landscapes

  • Tests Of Electric Status Of Batteries (AREA)

Abstract

PURPOSE: To display hours for which a battery can be used still, by constituting a unit so that the detected battery voltage may be converted to an availability time on a basis of current consumption of a measuring circuit and so on given previously and this availability time may be digital-displayed.
CONSTITUTION: When battery check signal BC is applied, selector switch SW2 is connected to the (b) contact side. Here, the level of output voltage E0 in differential amplifier AMP is proportional to battery voltage VB. Consequently, if circuit conditions are so selected that output voltage E0 of AMP may be zero in case of VB= VBL where the lower limit value of the operating voltage is VBL, output voltage E0 indicates the availability time of battery BAT. Output voltage E0 of AMP is compared with reference voltage ES, by comparator COMP; and when output voltage E0 is smaller than reference voltage ES this voltage is a through selector switches SW1 and SW2 and is supplied to display circuit DIS and is displayed as the availability time of battery BAT.
COPYRIGHT: (C)1981,JPO&Japio
JP7527179A 1979-06-15 1979-06-15 Battery display unit Pending JPS56664A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7527179A JPS56664A (en) 1979-06-15 1979-06-15 Battery display unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7527179A JPS56664A (en) 1979-06-15 1979-06-15 Battery display unit

Publications (1)

Publication Number Publication Date
JPS56664A true JPS56664A (en) 1981-01-07

Family

ID=13571392

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7527179A Pending JPS56664A (en) 1979-06-15 1979-06-15 Battery display unit

Country Status (1)

Country Link
JP (1) JPS56664A (en)

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