JPS5679282A - Electronic timepiece - Google Patents
Electronic timepieceInfo
- Publication number
- JPS5679282A JPS5679282A JP15616479A JP15616479A JPS5679282A JP S5679282 A JPS5679282 A JP S5679282A JP 15616479 A JP15616479 A JP 15616479A JP 15616479 A JP15616479 A JP 15616479A JP S5679282 A JPS5679282 A JP S5679282A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- capacity
- circuit
- switch
- electronic
- 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
Links
Landscapes
- Electromechanical Clocks (AREA)
- Control Of Electrical Variables (AREA)
- Dc-Dc Converters (AREA)
Abstract
PURPOSE: To prolong the life of the cell used in an electronic timepiece by supplying the reduced cell voltage to a portion or the whole of the electronic horological circuit.
CONSTITUTION: When a signal ψ applied to a voltage-reducing circuit comprising capacity elements 65 and 66 and MOS transistor switches 67 and 68 is low, the switches 67 and 68 are alternately turned on and off. When the switch 67 is on and the switch 68 is off, the capacity 65 is charged by a lithium cell 69. When the switch 67 is off and the switch 68 is on, the electric charge stored in the capacity 65 is partially stored in the capacity 66, and the voltage, 2.8W3.0V, across the capacity 65 is divided into the voltage determined by the capacities 65 and 66. The reduced voltage is supplied to a portion or the whole of an electronic horological circuit comprising an oscillation circuit, a frequency divider circuit and the like. Besides this, various voltage-reducing circuits can be used.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15616479A JPS5679282A (en) | 1979-11-30 | 1979-11-30 | Electronic timepiece |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15616479A JPS5679282A (en) | 1979-11-30 | 1979-11-30 | Electronic timepiece |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14638287A Division JPH01114333A (en) | 1987-06-12 | 1987-06-12 | Electronic timepiece |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5679282A true JPS5679282A (en) | 1981-06-29 |
JPS6359475B2 JPS6359475B2 (en) | 1988-11-18 |
Family
ID=15621742
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15616479A Granted JPS5679282A (en) | 1979-11-30 | 1979-11-30 | Electronic timepiece |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5679282A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01114333A (en) * | 1987-06-12 | 1989-05-08 | Seiko Epson Corp | Electronic timepiece |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5172470A (en) * | 1974-12-20 | 1976-06-23 | Citizen Watch Co Ltd | |
JPS5228366A (en) * | 1975-08-28 | 1977-03-03 | Shimauchi Seiki Kk | Voltage detection circuit |
JPS5240371A (en) * | 1975-09-27 | 1977-03-29 | Citizen Watch Co Ltd | Electronic watch |
JPS5329011U (en) * | 1976-08-19 | 1978-03-13 | ||
JPS5329011A (en) * | 1976-08-31 | 1978-03-17 | Toshiba Corp | Signal transmitter |
JPS53101473A (en) * | 1977-02-16 | 1978-09-04 | Seiko Instr & Electronics Ltd | Electronic watch |
JPS547371A (en) * | 1977-06-17 | 1979-01-20 | Seiko Epson Corp | Electronic watch |
JPS5414272A (en) * | 1977-07-04 | 1979-02-02 | Citizen Watch Co Ltd | Electronic watch |
-
1979
- 1979-11-30 JP JP15616479A patent/JPS5679282A/en active Granted
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5172470A (en) * | 1974-12-20 | 1976-06-23 | Citizen Watch Co Ltd | |
JPS5228366A (en) * | 1975-08-28 | 1977-03-03 | Shimauchi Seiki Kk | Voltage detection circuit |
JPS5240371A (en) * | 1975-09-27 | 1977-03-29 | Citizen Watch Co Ltd | Electronic watch |
JPS5329011U (en) * | 1976-08-19 | 1978-03-13 | ||
JPS5329011A (en) * | 1976-08-31 | 1978-03-17 | Toshiba Corp | Signal transmitter |
JPS53101473A (en) * | 1977-02-16 | 1978-09-04 | Seiko Instr & Electronics Ltd | Electronic watch |
JPS547371A (en) * | 1977-06-17 | 1979-01-20 | Seiko Epson Corp | Electronic watch |
JPS5414272A (en) * | 1977-07-04 | 1979-02-02 | Citizen Watch Co Ltd | Electronic watch |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01114333A (en) * | 1987-06-12 | 1989-05-08 | Seiko Epson Corp | Electronic timepiece |
JPH0583923B2 (en) * | 1987-06-12 | 1993-11-30 | Seiko Epson Corp |
Also Published As
Publication number | Publication date |
---|---|
JPS6359475B2 (en) | 1988-11-18 |
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