JPS5730977A - Electronic clock - Google Patents
Electronic clockInfo
- Publication number
- JPS5730977A JPS5730977A JP10609280A JP10609280A JPS5730977A JP S5730977 A JPS5730977 A JP S5730977A JP 10609280 A JP10609280 A JP 10609280A JP 10609280 A JP10609280 A JP 10609280A JP S5730977 A JPS5730977 A JP S5730977A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- malfunction
- issued
- motor driving
- error
- 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)
- Electromechanical Clocks (AREA)
- Control Of Stepping Motors (AREA)
Abstract
PURPOSE:To prevent indication error of a clock, by providing a function with which when a motor has a malfunction, the error is detected, and a driving pulse for correction is issued separately to correct the error. CONSTITUTION:A timing circuit 12 incorporating in built-in manner a crystal oscillator and a frequency dividing circuit generates a timing signal of 1Hz, and a motor driving circuit 13 outputs, after receiving said timing signal, a motor driving signal that is an alternating pulse outputted every second. A correcting circuit 14 for a motor malfunction detects existence of counter electromotive force generated at the time when a rotor 6 rotates, and identifies a malfunction of the motor. In the case of malfunction, an instruction is issued to the motor driving circuit 13 after a motor driving pulse in the reverse direction is issued after one second, further, a motor driving pulse, firstly in the positive direction, successively in the reverse direction, is issued, thereby allowing error in indication to be removed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10609280A JPS5730977A (en) | 1980-08-01 | 1980-08-01 | Electronic clock |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10609280A JPS5730977A (en) | 1980-08-01 | 1980-08-01 | Electronic clock |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5730977A true JPS5730977A (en) | 1982-02-19 |
Family
ID=14424896
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10609280A Pending JPS5730977A (en) | 1980-08-01 | 1980-08-01 | Electronic clock |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5730977A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013111614A1 (en) * | 2012-01-23 | 2013-08-01 | サンコール株式会社 | Electrical connector |
-
1980
- 1980-08-01 JP JP10609280A patent/JPS5730977A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013111614A1 (en) * | 2012-01-23 | 2013-08-01 | サンコール株式会社 | Electrical connector |
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