JPS557663A - Watch using sollar cell - Google Patents

Watch using sollar cell

Info

Publication number
JPS557663A
JPS557663A JP8110278A JP8110278A JPS557663A JP S557663 A JPS557663 A JP S557663A JP 8110278 A JP8110278 A JP 8110278A JP 8110278 A JP8110278 A JP 8110278A JP S557663 A JPS557663 A JP S557663A
Authority
JP
Japan
Prior art keywords
illumination
sollar
connection
series
external
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
JP8110278A
Other languages
Japanese (ja)
Inventor
Tsutomu Otake
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 Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP8110278A priority Critical patent/JPS557663A/en
Publication of JPS557663A publication Critical patent/JPS557663A/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
    • G04C10/02—Arrangements of electric power supplies in time pieces the power supply being a radioactive or photovoltaic source

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)

Abstract

PURPOSE:To enable to charge efficiently at a wide variety of illumination area, by changing the connection of sollar cells depending on the brightness at external place. CONSTITUTION:The external brightness is detected with the photo electric element and output is produced via the inverter. The output phi is given to each gate of TR602, 603, and 604. When this signal is at high level(external place is at high intensity of illumination), TR602 and TR604 are turned on TR603 is turned off, to cause the sollar cells 601a and 601b in series connection into parallel connection. Inversely, in case of low level(external place is lower intensity of illumination), the sollar cell blocks 601a and 602b are changed into series connection. Thus, by increasing the number of series stages at lower intensity of illumination, and performing parallel connection at higher intensity of illumination, effective number of series stages is reduced to perform efficient charging.
JP8110278A 1978-07-04 1978-07-04 Watch using sollar cell Pending JPS557663A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8110278A JPS557663A (en) 1978-07-04 1978-07-04 Watch using sollar cell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8110278A JPS557663A (en) 1978-07-04 1978-07-04 Watch using sollar cell

Publications (1)

Publication Number Publication Date
JPS557663A true JPS557663A (en) 1980-01-19

Family

ID=13737012

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8110278A Pending JPS557663A (en) 1978-07-04 1978-07-04 Watch using sollar cell

Country Status (1)

Country Link
JP (1) JPS557663A (en)

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