[go: up one dir, main page]

JPS57201882A - Solar battery timepiece - Google Patents

Solar battery timepiece

Info

Publication number
JPS57201882A
JPS57201882A JP8768481A JP8768481A JPS57201882A JP S57201882 A JPS57201882 A JP S57201882A JP 8768481 A JP8768481 A JP 8768481A JP 8768481 A JP8768481 A JP 8768481A JP S57201882 A JPS57201882 A JP S57201882A
Authority
JP
Japan
Prior art keywords
solar battery
circuit
timepiece
battery
secondary 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.)
Granted
Application number
JP8768481A
Other languages
Japanese (ja)
Other versions
JPS6218876B2 (en
Inventor
Hajime Miyazaki
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 JP8768481A priority Critical patent/JPS57201882A/en
Publication of JPS57201882A publication Critical patent/JPS57201882A/en
Publication of JPS6218876B2 publication Critical patent/JPS6218876B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G19/00—Electric power supply circuits specially adapted for use in electronic time-pieces

Landscapes

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

Abstract

PURPOSE:To prevent the deterioration of charge/discharge performance of a secondary battery, by stopping a current from the secondary battery to a timepiece operation circuit, if light is not shone upon a solar battery for a prescribed time. CONSTITUTION:A secondary battery 2 is charged with a solar battery 1 via a limiter 5 and power is applied to a timepiece moving circuit 4. If a voltage generated from the solar battery 1 does not reach a prescribed value, it is detected with the limiter 5, and if this detected period exceeds a prescribed period, the supply of power from the battery 2 to a timepiece operating circuit 3 is interrupted with a current controlling circuit 7. If the output from the solar battery 1 is not applied for a month to two, the current from the secondary battery 2 to the circuit 3 is stopped. If the output from the solar battery is presented, a current flows from the secondary battery to the circuit 3 to operate the timepiece.
JP8768481A 1981-06-08 1981-06-08 Solar battery timepiece Granted JPS57201882A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8768481A JPS57201882A (en) 1981-06-08 1981-06-08 Solar battery timepiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8768481A JPS57201882A (en) 1981-06-08 1981-06-08 Solar battery timepiece

Publications (2)

Publication Number Publication Date
JPS57201882A true JPS57201882A (en) 1982-12-10
JPS6218876B2 JPS6218876B2 (en) 1987-04-24

Family

ID=13921749

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8768481A Granted JPS57201882A (en) 1981-06-08 1981-06-08 Solar battery timepiece

Country Status (1)

Country Link
JP (1) JPS57201882A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6266189A (en) * 1985-09-19 1987-03-25 Seiko Epson Corp electronic clock
US4714352A (en) * 1985-07-06 1987-12-22 Junghans Uhren Gmbh Electronic device powered by solar cells
EP1677166A3 (en) * 1997-11-20 2007-08-22 Seiko Epson Corporation Electronic equipment and control method for controlling its power consumption

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0171385U (en) * 1987-10-27 1989-05-12

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50116076A (en) * 1974-02-26 1975-09-11
JPS537369A (en) * 1976-07-09 1978-01-23 Seiko Instr & Electronics Ltd Electronic watch
JPS53145874U (en) * 1977-04-21 1978-11-16
JPS5486374A (en) * 1977-12-22 1979-07-09 Seiko Instr & Electronics Ltd Digital electronic watch

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50116076A (en) * 1974-02-26 1975-09-11
JPS537369A (en) * 1976-07-09 1978-01-23 Seiko Instr & Electronics Ltd Electronic watch
JPS53145874U (en) * 1977-04-21 1978-11-16
JPS5486374A (en) * 1977-12-22 1979-07-09 Seiko Instr & Electronics Ltd Digital electronic watch

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4714352A (en) * 1985-07-06 1987-12-22 Junghans Uhren Gmbh Electronic device powered by solar cells
JPS6266189A (en) * 1985-09-19 1987-03-25 Seiko Epson Corp electronic clock
EP1677166A3 (en) * 1997-11-20 2007-08-22 Seiko Epson Corporation Electronic equipment and control method for controlling its power consumption

Also Published As

Publication number Publication date
JPS6218876B2 (en) 1987-04-24

Similar Documents

Publication Publication Date Title
US4164698A (en) Battery charging circuit
JPS57110084A (en) Transistor inverter
JPS57201882A (en) Solar battery timepiece
ES348457A1 (en) Control of Battery Charging
JPS6439235A (en) Battery charging equipment
JPS5719976A (en) Charging method for zinc alkali battery
JPS5732427A (en) Camera circuit
JPS5576578A (en) Overdischarge-preventing circuit for battery
JPS57191671A (en) Flash fixing device
JPS56111920A (en) Electric power supply device for flash discharge tube
JPS56132817A (en) Driving circuit of semiconductor element
JPS567523A (en) Off delay timer
JPS5486374A (en) Digital electronic watch
JPS5673908A (en) Protection circuit for switching amplifier
JPS54155870A (en) Solar battery watch
JPS541521A (en) Charging excitation controller in hybrid car
JPH0531587Y2 (en)
JPS57159127A (en) Driving circuit device for light protecting element and photodetector
JPS5787626A (en) Driving circuit for self-distinguishing type switch element
JPS5484225A (en) Switching power source circuit
FR2453529A1 (en) Power supply cut=out circuit - uses thyristor control with thyristor firing being varied on load short circuit to reduce short circuit current
JPS5796474A (en) Charging method of enclosed type alkaline storage battery
JPS5357987A (en) Solar battery power source device
JPS57201881A (en) Solar battery timepiece
JPS54102068A (en) Discharge circuit of discharge tube