CH630224B - DRIVE CIRCUIT FOR CONTROLLING A STEP MOTOR FROM AN ELECTRONIC CLOCK PART, IN PARTICULAR AN ELECTRONIC Wristwatch, IN REVERSE DIRECTION. - Google Patents
DRIVE CIRCUIT FOR CONTROLLING A STEP MOTOR FROM AN ELECTRONIC CLOCK PART, IN PARTICULAR AN ELECTRONIC Wristwatch, IN REVERSE DIRECTION.Info
- Publication number
- CH630224B CH630224B CH447578A CH447578A CH630224B CH 630224 B CH630224 B CH 630224B CH 447578 A CH447578 A CH 447578A CH 447578 A CH447578 A CH 447578A CH 630224 B CH630224 B CH 630224B
- Authority
- CH
- Switzerland
- Prior art keywords
- electronic
- step motor
- controlling
- drive circuit
- reverse direction
- Prior art date
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
-
- 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)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
PURPOSE:To enable reverse fast feeding of a step motor by providing a means to detect the position of the rotor only in reverse rotation so as to generate pulses in ideal timing in other circuit without using pulses in the driving stage.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4766777A JPS53133066A (en) | 1977-04-25 | 1977-04-25 | Electronic watch |
Publications (2)
Publication Number | Publication Date |
---|---|
CH630224B true CH630224B (en) | |
CH630224GA3 CH630224GA3 (en) | 1982-06-15 |
Family
ID=12781603
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH447578A CH630224GA3 (en) | 1977-04-25 | 1978-04-25 | Drive circuit for controlling a stepper motor of an electronic timepiece, especially an electronic wristwatch, in the reverse direction |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS53133066A (en) |
CH (1) | CH630224GA3 (en) |
DE (1) | DE2817565A1 (en) |
FR (1) | FR2389168A1 (en) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5740759B2 (en) * | 1973-07-17 | 1982-08-30 | ||
JPS51101577A (en) * | 1975-03-04 | 1976-09-08 | Seiko Instr & Electronics | DENSHIDOKEISOCHINOSHUSEISOCHI |
JPS51126880A (en) * | 1975-04-26 | 1976-11-05 | Seiko Instr & Electronics Ltd | Automatic control circuit of pulse width |
JPS5312669A (en) * | 1976-07-21 | 1978-02-04 | Seiko Instr & Electronics Ltd | Hands reversing device of electronic watch |
-
1977
- 1977-04-25 JP JP4766777A patent/JPS53133066A/en active Pending
-
1978
- 1978-04-21 DE DE19782817565 patent/DE2817565A1/en not_active Withdrawn
- 1978-04-24 FR FR7812043A patent/FR2389168A1/en active Granted
- 1978-04-25 CH CH447578A patent/CH630224GA3/en unknown
Also Published As
Publication number | Publication date |
---|---|
DE2817565A1 (en) | 1978-11-02 |
CH630224GA3 (en) | 1982-06-15 |
FR2389168B1 (en) | 1983-10-21 |
FR2389168A1 (en) | 1978-11-24 |
JPS53133066A (en) | 1978-11-20 |
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