FR2480956B1 - - Google Patents
Info
- Publication number
- FR2480956B1 FR2480956B1 FR8107105A FR8107105A FR2480956B1 FR 2480956 B1 FR2480956 B1 FR 2480956B1 FR 8107105 A FR8107105 A FR 8107105A FR 8107105 A FR8107105 A FR 8107105A FR 2480956 B1 FR2480956 B1 FR 2480956B1
- Authority
- FR
- France
- Prior art keywords
- pulses
- circuit
- motor control
- control circuit
- pulse shaper
- 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.)
- Expired
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)
- Electromechanical Clocks (AREA)
- Control Of Stepping Motors (AREA)
- Electric Clocks (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
An electronic timepiece suitable for use with different types of batteries having different voltages, and including a stepping motor 6, an oscillator 1, a frequency divider 2 and a motor control circuit 5, comprises a battery voltage detector 8 and a pulse shaper circuit 9 capable of producing pulses of different durations. The voltage detector circuit 8 controls the pulse shaper circuit 9 to cause it to supply the motor control circuit with pulses whose duration depends upon the detected battery voltage, whereby the drive pulse power will be substantially the same irrespective of the type and voltage of the battery fitted. In another embodiment trains of short pulses are used instead of single pulses and the duty cycle of the short pulses is varied.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH292780A CH632383B (en) | 1980-04-16 | 1980-04-16 | ELECTRONIC WATCH PART. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2480956A1 FR2480956A1 (en) | 1981-10-23 |
| FR2480956B1 true FR2480956B1 (en) | 1984-01-06 |
Family
ID=4244759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8107105A Granted FR2480956A1 (en) | 1980-04-16 | 1981-04-07 | PIECE OF ELECTRONIC WATCHMAKING |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5848876B2 (en) |
| CH (1) | CH632383B (en) |
| DE (1) | DE3114356A1 (en) |
| FR (1) | FR2480956A1 (en) |
| GB (1) | GB2073917B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH646576GA3 (en) * | 1981-10-02 | 1984-12-14 | ||
| JPH0347115Y2 (en) * | 1984-10-25 | 1991-10-07 | ||
| JPS61147181A (en) * | 1984-12-20 | 1986-07-04 | Seiko Instr & Electronics Ltd | Electronic metronone |
| JPS61147180A (en) * | 1984-12-20 | 1986-07-04 | Seiko Instr & Electronics Ltd | Electronic metronone |
| US7122026B2 (en) | 2002-04-22 | 2006-10-17 | Medtronic, Inc. | Implantable infusion device with optimized peristaltic pump motor drive |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4830676U (en) * | 1971-08-20 | 1973-04-14 | ||
| US4129981A (en) * | 1976-02-06 | 1978-12-19 | Citizen Watch Company Limited | Electronic timepiece |
| JPS52141268A (en) * | 1976-05-19 | 1977-11-25 | Seiko Epson Corp | Electronic clock |
| US4158287A (en) * | 1976-08-12 | 1979-06-19 | Citizen Watch Company Limited | Driver circuit for electro-mechanical transducer |
| US4219999A (en) * | 1977-03-03 | 1980-09-02 | Citizen Watch Company, Limited | Electronic timepiece equipped with battery life display |
| JPS53132386A (en) * | 1977-04-23 | 1978-11-18 | Seiko Instr & Electronics Ltd | Electronic watch |
| GB2006995B (en) * | 1977-09-26 | 1982-11-17 | Citizen Watch Co Ltd | Drive system for pulse motor |
| JPS5498659A (en) * | 1977-12-22 | 1979-08-03 | Citizen Watch Co Ltd | Wristwatch with calculator |
| CH616813B (en) * | 1977-12-28 | Ebauches Sa | ELECTRONIC WATCH PART WITH DETECTION SYSTEM OF END OF BATTERY LIFE. | |
| JPS5612577A (en) * | 1979-07-13 | 1981-02-06 | Seiko Instr & Electronics Ltd | Electronic clock |
-
1980
- 1980-04-16 CH CH292780A patent/CH632383B/en unknown
-
1981
- 1981-04-07 FR FR8107105A patent/FR2480956A1/en active Granted
- 1981-04-09 DE DE19813114356 patent/DE3114356A1/en active Granted
- 1981-04-14 GB GB8111839A patent/GB2073917B/en not_active Expired
- 1981-04-15 JP JP56055733A patent/JPS5848876B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH632383B (en) | |
| CH632383GA3 (en) | 1982-10-15 |
| GB2073917B (en) | 1983-11-23 |
| FR2480956A1 (en) | 1981-10-23 |
| DE3114356A1 (en) | 1982-06-09 |
| GB2073917A (en) | 1981-10-21 |
| JPS5848876B2 (en) | 1983-10-31 |
| DE3114356C2 (en) | 1989-01-19 |
| JPS56159998A (en) | 1981-12-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |