JPS5617082A - Wrist watch provided with solar cell - Google Patents

Wrist watch provided with solar cell

Info

Publication number
JPS5617082A
JPS5617082A JP9309479A JP9309479A JPS5617082A JP S5617082 A JPS5617082 A JP S5617082A JP 9309479 A JP9309479 A JP 9309479A JP 9309479 A JP9309479 A JP 9309479A JP S5617082 A JPS5617082 A JP S5617082A
Authority
JP
Japan
Prior art keywords
array
cells
circuit
series
solar cell
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
JP9309479A
Other languages
Japanese (ja)
Inventor
Shohei Koshiba
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 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 Seiko Instruments and Electronics Ltd filed Critical Seiko Instruments and Electronics Ltd
Priority to JP9309479A priority Critical patent/JPS5617082A/en
Publication of JPS5617082A publication Critical patent/JPS5617082A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F77/00—Constructional details of devices covered by this subclass
    • H10F77/95—Circuit arrangements
    • H10F77/953—Circuit arrangements for devices having potential barriers
    • H10F77/955—Circuit arrangements for devices having potential barriers for photovoltaic devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

Landscapes

  • Photovoltaic Devices (AREA)
  • Electromechanical Clocks (AREA)

Abstract

PURPOSE:To save a reverse current blocking diode to be connected between a secondary battery in the array of solar cells for the wrist watch by a method wherein at least four or more cells are connected in series and the area per element is prescribed as 0.2cm<2> or less. CONSTITUTION:The secondary battery 4 is connected in parallel to an electronic watch circuit 5, and the battery 4 is charged by the solar cell array 6 through an overcharge proof circuit 3. In this constitution, the cells used for the array 6 is made of GaAlAs/GaAs, at least four or more cells are used to connect in series and the area of individual cell is prescribed as 0.2cm<2> or less per element. By this way, the reverse current blocking diode ordinarily connected in series between the array 6 and the circuit 3 can be made to needless to reduce the necessitated voltage drop as much, enhancing the charging ability at small quantity of light and excluding the wasteful voltage drop in the charging circuit.
JP9309479A 1979-07-20 1979-07-20 Wrist watch provided with solar cell Pending JPS5617082A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9309479A JPS5617082A (en) 1979-07-20 1979-07-20 Wrist watch provided with solar cell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9309479A JPS5617082A (en) 1979-07-20 1979-07-20 Wrist watch provided with solar cell

Publications (1)

Publication Number Publication Date
JPS5617082A true JPS5617082A (en) 1981-02-18

Family

ID=14072925

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9309479A Pending JPS5617082A (en) 1979-07-20 1979-07-20 Wrist watch provided with solar cell

Country Status (1)

Country Link
JP (1) JPS5617082A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60140181A (en) * 1983-12-27 1985-07-25 Seiko Epson Corp Analog electronic clock with solar battery
US20140159637A1 (en) * 2012-08-19 2014-06-12 EnergyBionics, LLC Portable energy harvesting, storing, and charging device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60140181A (en) * 1983-12-27 1985-07-25 Seiko Epson Corp Analog electronic clock with solar battery
US20140159637A1 (en) * 2012-08-19 2014-06-12 EnergyBionics, LLC Portable energy harvesting, storing, and charging device
US20140159638A1 (en) * 2012-08-19 2014-06-12 EnergyBionics, LLC Portable energy harvesting, storing, and charging device

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