JPS5676078A - Circuit for electronic time piece - Google Patents
Circuit for electronic time pieceInfo
- Publication number
- JPS5676078A JPS5676078A JP15375079A JP15375079A JPS5676078A JP S5676078 A JPS5676078 A JP S5676078A JP 15375079 A JP15375079 A JP 15375079A JP 15375079 A JP15375079 A JP 15375079A JP S5676078 A JPS5676078 A JP S5676078A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- driving
- circuit
- power supplying
- controlled
- 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
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
- G04C3/14—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Stepping Motors (AREA)
- Electromechanical Clocks (AREA)
Abstract
PURPOSE:To always generate the optimum torque for a fluctuating time piece load regardless of a voltage variation of a high voltage battery by a method wherein a driving voltage to an electric-magnetic converter such as a step motor, etc. is detected and a power supplying time is controlled. CONSTITUTION:When a driving voltage applied to a driving circuit 5 of an electric- magnetic converter such as a step motor SM, etc. through a capacitor 5b of a driving power source circuit 5 reaches a given voltage an FF of a voltage level detection circuit 7 is set. An FF of a power supplying time control circuit 6 is reset by means of the set output due to the detection of this driving voltage, and a switch circuit 6a is disconnected, thus, a power supplying time to the capacitor 5b being controlled. And regardless of the voltage variation of a power source battery 1, the power supplying time is controlled and a given voltage is supplied to the magnetic converter driving circuit, thus, generating the optimum torque. In a same way, in corresponding to a time piece load variation, if a power supplying time is controlled, the optimum torque is generated for a calendar driving and the optimum torque can be always generated for the time piece load fluctuating regardless of the voltage variation of a high voltage battery such as a lithium battery, etc.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15375079A JPS5676078A (en) | 1979-11-28 | 1979-11-28 | Circuit for electronic time piece |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15375079A JPS5676078A (en) | 1979-11-28 | 1979-11-28 | Circuit for electronic time piece |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5676078A true JPS5676078A (en) | 1981-06-23 |
Family
ID=15569290
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15375079A Pending JPS5676078A (en) | 1979-11-28 | 1979-11-28 | Circuit for electronic time piece |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5676078A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01243891A (en) * | 1988-02-12 | 1989-09-28 | Eta Sa Fab Ebauches | Stepping motor controller |
-
1979
- 1979-11-28 JP JP15375079A patent/JPS5676078A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01243891A (en) * | 1988-02-12 | 1989-09-28 | Eta Sa Fab Ebauches | Stepping motor controller |
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