JPS5776470A - Wristwatch with solar battery - Google Patents

Wristwatch with solar battery

Info

Publication number
JPS5776470A
JPS5776470A JP55151722A JP15172280A JPS5776470A JP S5776470 A JPS5776470 A JP S5776470A JP 55151722 A JP55151722 A JP 55151722A JP 15172280 A JP15172280 A JP 15172280A JP S5776470 A JPS5776470 A JP S5776470A
Authority
JP
Japan
Prior art keywords
secondary battery
voltage
capacity
displayed
point
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
JP55151722A
Other languages
Japanese (ja)
Inventor
Shohei Koshiba
Junichi Tabata
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
Daini Seikosha Co Ltd
Seiko Instruments and Electronics 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 Daini Seikosha Co Ltd, Seiko Instruments and Electronics Ltd filed Critical Daini Seikosha Co Ltd
Priority to JP55151722A priority Critical patent/JPS5776470A/en
Publication of JPS5776470A publication Critical patent/JPS5776470A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C10/00—Arrangements of electric power supplies in time-pieces
    • G04C10/04—Arrangements of electric power supplies in time-pieces with means for indicating the condition of the power supply

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Secondary Cells (AREA)
  • Electric Clocks (AREA)
  • Electromechanical Clocks (AREA)
  • Photovoltaic Devices (AREA)

Abstract

PURPOSE:To permit checking of electrically charging levels and prevent the capacity run out of a secondary battery by displaying the voltage of the secondary battery having two stages of voltage flattening parts dividedly in three stages. CONSTITUTION:When the capacity of a secondary battery is between point (a)- point (b), the electric current generated by solar batteries is charged into the secondary battery. At this time, the voltage of the secondary battery is roughly constant. Voltage E0 is detected with a voltage detecting circuit, and a symbol mark indicating that the capacity of the secondary battery is correct is displayed in a display device. When the capacity of the secondary battery exceeds 100% and arrives at the point (c) and when the voltage of the secondary batteries goes E1, a symbol mark indicating that the capacity of the secondary battery is full is displayed. When the voltage of the secondary battery lowers to E2, a symbol mark indicating the decreased capacity of the secondary battery is displayed in the display device.
JP55151722A 1980-10-29 1980-10-29 Wristwatch with solar battery Pending JPS5776470A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55151722A JPS5776470A (en) 1980-10-29 1980-10-29 Wristwatch with solar battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55151722A JPS5776470A (en) 1980-10-29 1980-10-29 Wristwatch with solar battery

Publications (1)

Publication Number Publication Date
JPS5776470A true JPS5776470A (en) 1982-05-13

Family

ID=15524847

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55151722A Pending JPS5776470A (en) 1980-10-29 1980-10-29 Wristwatch with solar battery

Country Status (1)

Country Link
JP (1) JPS5776470A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5914681A (en) * 1982-07-15 1984-01-25 Matsushita Electric Works Ltd Solar battery with charge storage function
JPS62128336U (en) * 1986-02-06 1987-08-14
WO2000013066A1 (en) * 1998-08-31 2000-03-09 Citizen Watch Co., Ltd. Electronic watch with generating function

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5914681A (en) * 1982-07-15 1984-01-25 Matsushita Electric Works Ltd Solar battery with charge storage function
JPS62128336U (en) * 1986-02-06 1987-08-14
WO2000013066A1 (en) * 1998-08-31 2000-03-09 Citizen Watch Co., Ltd. Electronic watch with generating function
US6580665B1 (en) 1998-08-31 2003-06-17 Citizen Watch Co., Ltd. Electronic timepiece having power generating function
JP4481497B2 (en) * 1998-08-31 2010-06-16 シチズンホールディングス株式会社 Electronic watch with power generation function

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