JPS5724877A - Electronic watch - Google Patents
Electronic watchInfo
- Publication number
- JPS5724877A JPS5724877A JP9941280A JP9941280A JPS5724877A JP S5724877 A JPS5724877 A JP S5724877A JP 9941280 A JP9941280 A JP 9941280A JP 9941280 A JP9941280 A JP 9941280A JP S5724877 A JPS5724877 A JP S5724877A
- Authority
- JP
- Japan
- Prior art keywords
- driving
- rotor
- circuit
- coil
- step motor
- 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
- G04C3/143—Means to reduce power consumption by reducing pulse width or amplitude and related problems, e.g. detection of unwanted or missing step
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Stepping Motors (AREA)
- Electromechanical Clocks (AREA)
Abstract
PURPOSE:To reduce the power consumption by always driving a step motor with the minimum energy through control of the time in the application of driving power according to information on the rotating position of a rotor. CONSTITUTION:Current flowing through a coil 4 of a step motor 15 is detected with a detection element 16A. Then, a voltage controlling/amplifying circuit 16 B amplifies and computes the coil current detected to detect the information on the rotating position of a rotor 1 of the motor 15. Detecting the rotor 1 rotating over a fixed angle of rotation, a controlling circuit 16C controls the output of a driving signal preparing circuit 13 thereby prohibiting the application of a driving current to a coil 4 of a driving circuit 14. This enables the driving of the step motor 15 with the minimum energy thereby reducing the power consumption.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9941280A JPS5724877A (en) | 1980-07-22 | 1980-07-22 | Electronic watch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9941280A JPS5724877A (en) | 1980-07-22 | 1980-07-22 | Electronic watch |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5724877A true JPS5724877A (en) | 1982-02-09 |
Family
ID=14246758
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9941280A Pending JPS5724877A (en) | 1980-07-22 | 1980-07-22 | Electronic watch |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5724877A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015084633A (en) * | 2013-09-20 | 2015-04-30 | カシオ計算機株式会社 | Stepping motor and clock |
-
1980
- 1980-07-22 JP JP9941280A patent/JPS5724877A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015084633A (en) * | 2013-09-20 | 2015-04-30 | カシオ計算機株式会社 | Stepping motor and clock |
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