JPS55163477A - Power circuit for electronic clock - Google Patents
Power circuit for electronic clockInfo
- Publication number
- JPS55163477A JPS55163477A JP7123479A JP7123479A JPS55163477A JP S55163477 A JPS55163477 A JP S55163477A JP 7123479 A JP7123479 A JP 7123479A JP 7123479 A JP7123479 A JP 7123479A JP S55163477 A JPS55163477 A JP S55163477A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- power
- battery
- voltage
- dividing circuit
- 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
Links
Landscapes
- Electric Clocks (AREA)
- Electromechanical Clocks (AREA)
Abstract
PURPOSE: To supply a signal from an oscillation circuit to a voltage dividing circuit through which power is supplied to a clock circuit and thus to economize power by connecting power of the oscillation circuit transiently to a power battery when closing the power battery.
CONSTITUTION: From inserting a battery 8, a battery voltage is impressed on an oscillation circuit 1 and a frequency dividing circuit 2 through a starting condenser 9. Upon starting of oscillation, a time reference signal is subjected to frequency division 2 and transferred to a voltage dividing circuit 7 through a level shift circuit 3. The voltage dividing circuit 7 thus begins to operate, divides the battery voltage and supplies power to the oscillation circuit 1 and the frequency dividing circuit 2. After that, the condenser 9 operates as that of removing ripples of an output voltage of the voltage dividing circuit 7.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7123479A JPS55163477A (en) | 1979-06-08 | 1979-06-08 | Power circuit for electronic clock |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7123479A JPS55163477A (en) | 1979-06-08 | 1979-06-08 | Power circuit for electronic clock |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55163477A true JPS55163477A (en) | 1980-12-19 |
Family
ID=13454791
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7123479A Pending JPS55163477A (en) | 1979-06-08 | 1979-06-08 | Power circuit for electronic clock |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55163477A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0724331A1 (en) * | 1995-01-30 | 1996-07-31 | Nec Corporation | Semiconductor integrated circuit having low power consumption oscillator |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5178271A (en) * | 1974-12-27 | 1976-07-07 | Citizen Watch Co Ltd | |
JPS5240371A (en) * | 1975-09-27 | 1977-03-29 | Citizen Watch Co Ltd | Electronic watch |
JPS5258958A (en) * | 1975-11-11 | 1977-05-14 | Citizen Watch Co Ltd | Electronic watch |
-
1979
- 1979-06-08 JP JP7123479A patent/JPS55163477A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5178271A (en) * | 1974-12-27 | 1976-07-07 | Citizen Watch Co Ltd | |
JPS5240371A (en) * | 1975-09-27 | 1977-03-29 | Citizen Watch Co Ltd | Electronic watch |
JPS5258958A (en) * | 1975-11-11 | 1977-05-14 | Citizen Watch Co Ltd | Electronic watch |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0724331A1 (en) * | 1995-01-30 | 1996-07-31 | Nec Corporation | Semiconductor integrated circuit having low power consumption oscillator |
US5719534A (en) * | 1995-01-30 | 1998-02-17 | Nec Corporation | Semiconductor integrated circuit having low power consumption oscillator |
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