JPS5596484A - Indicating device of battery life for watch - Google Patents

Indicating device of battery life for watch

Info

Publication number
JPS5596484A
JPS5596484A JP533479A JP533479A JPS5596484A JP S5596484 A JPS5596484 A JP S5596484A JP 533479 A JP533479 A JP 533479A JP 533479 A JP533479 A JP 533479A JP S5596484 A JPS5596484 A JP S5596484A
Authority
JP
Japan
Prior art keywords
circuit
voltage
watch
detection circuit
battery
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
JP533479A
Other languages
Japanese (ja)
Inventor
Akio Matsumoto
Hiroshi Itoyama
Sadashige Horii
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP533479A priority Critical patent/JPS5596484A/en
Publication of JPS5596484A publication Critical patent/JPS5596484A/en
Pending legal-status Critical Current

Links

Landscapes

  • Electromechanical Clocks (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Power Sources (AREA)
  • Stand-By Power Supply Arrangements (AREA)

Abstract

PURPOSE: To ensure an accurate range until disorder or suspension of the watch actually takes place after the battery life is forecast by means of a circuit adapted to start counting the output of the divider circuit by the signal from a battery voltage detection circuit.
CONSTITUTION: The voltage of a battery 6 is detected by a voltage detection circuit 7. When the detected voltage reaches a certain level, a transistor 7a is turned on and an indication plate 10 is disengaged from a mobile piece 9 and moves to the position as indicated by the broken line. A switch 11 works to cut the current flowing through an indication plate drive coil 8. At the same time, receiving the output of the detection circuit 7, a counter circuit 14 is reset. When the working voltage of the detection circuit 7 is expressed by V1, the minimum working voltage of the watch V2 and the battery voltage in the forecast range V3, the value of V1 is set to meet the relationship V1>V3>V2. If so, the gate circuit 15 is off in a certain period of time after the forecast indication, when signals fail to be applied to the drive circuit 3 and the watch comes to a stop.
COPYRIGHT: (C)1980,JPO&Japio
JP533479A 1979-01-19 1979-01-19 Indicating device of battery life for watch Pending JPS5596484A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP533479A JPS5596484A (en) 1979-01-19 1979-01-19 Indicating device of battery life for watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP533479A JPS5596484A (en) 1979-01-19 1979-01-19 Indicating device of battery life for watch

Publications (1)

Publication Number Publication Date
JPS5596484A true JPS5596484A (en) 1980-07-22

Family

ID=11608329

Family Applications (1)

Application Number Title Priority Date Filing Date
JP533479A Pending JPS5596484A (en) 1979-01-19 1979-01-19 Indicating device of battery life for watch

Country Status (1)

Country Link
JP (1) JPS5596484A (en)

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