JPS5524643A - Electronic watch - Google Patents

Electronic watch

Info

Publication number
JPS5524643A
JPS5524643A JP9765978A JP9765978A JPS5524643A JP S5524643 A JPS5524643 A JP S5524643A JP 9765978 A JP9765978 A JP 9765978A JP 9765978 A JP9765978 A JP 9765978A JP S5524643 A JPS5524643 A JP S5524643A
Authority
JP
Japan
Prior art keywords
battery
electronic watch
watch
capacity
voltage
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
JP9765978A
Other languages
Japanese (ja)
Inventor
Mitsuo Iwadate
Shojiro Komaki
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP9765978A priority Critical patent/JPS5524643A/en
Publication of JPS5524643A publication Critical patent/JPS5524643A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To detect the terminal voltage of a battery, while an electronic watch is being used, so that the capacity of the battery can be optically displayed, by using such a battery in the watch as has its voltage proportional to the electric capacity.
CONSTITUTION: When a switch 10 is turned on, the terminal voltage of such a secondary battery E0 for an electronic watch as has its voltage proportional to an electric capacity is detected through voltage dividing resistors r1 and r2 of a light emitting element drive unit 8 so that LEDs L1, L2 and so on are lit through the corresponding drivers T1, T2 and so on of a light emitting element drive unit 9 is response to the comparison outputs of the comparators C1, C2 and so on which have their standard voltages get stepwise. By these lighting operations, the capacity of the battery E0 can be displayed even while the watch is being used. As a result, it is possible to easily and accurately judge whether the charge circuit connected with the battery E0 is driven or not thereby to provided an electronic watch which is conveniently used.
COPYRIGHT: (C)1980,JPO&Japio
JP9765978A 1978-08-10 1978-08-10 Electronic watch Pending JPS5524643A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9765978A JPS5524643A (en) 1978-08-10 1978-08-10 Electronic watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9765978A JPS5524643A (en) 1978-08-10 1978-08-10 Electronic watch

Publications (1)

Publication Number Publication Date
JPS5524643A true JPS5524643A (en) 1980-02-21

Family

ID=14198185

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9765978A Pending JPS5524643A (en) 1978-08-10 1978-08-10 Electronic watch

Country Status (1)

Country Link
JP (1) JPS5524643A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03173522A (en) * 1989-12-04 1991-07-26 Matsushita Electric Ind Co Ltd Charging type cleaner

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03173522A (en) * 1989-12-04 1991-07-26 Matsushita Electric Ind Co Ltd Charging type cleaner

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