GB1532527A - Driving circuit arrangement suitable for a timepiece - Google Patents
Driving circuit arrangement suitable for a timepieceInfo
- Publication number
- GB1532527A GB1532527A GB4572276A GB4572276A GB1532527A GB 1532527 A GB1532527 A GB 1532527A GB 4572276 A GB4572276 A GB 4572276A GB 4572276 A GB4572276 A GB 4572276A GB 1532527 A GB1532527 A GB 1532527A
- Authority
- GB
- United Kingdom
- Prior art keywords
- timepiece
- diodes
- circuit arrangement
- current
- nov
- 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)
- Electric Clocks (AREA)
- Control Of El Displays (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
1532527 Electronic timepieces SEIKO KOKI KK 3 Nov 1976 [13 Nov 1975] 45722/76 Heading G3T An electronic timepiece comprising a stepping motor coupled to hands, has a circuit arrangement which provides a voltage higher than the battery voltage to activate LED's thereby indicating that the timepiece is operating. In Fig. 1, a transistor bridge passes current in opposite directions alternately through the motor drive coil, consequently charging a capacitor C in opposite directions alternately. At the moment of reversal of the charging current, a voltage substantially twice the supply voltage VDD is applied across one of the LE diodes D 1 , D 2 in its conducting direction. Fig. 2 shows the potentials OUT1 and OUT2 at respective ends of the bridge diagonal, also the current through D1. The diodes emit light alternately each second. There may be only one LED as in Figs. 3, 5 (not shown), or the diodes may be in parallel with a resistor across the coil and capacitor, as in Figs. 4, 5 (not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13659275A JPS5818639B2 (en) | 1975-11-13 | 1975-11-13 | Tokeiyou Hatsukou Hiyouji Cairo |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1532527A true GB1532527A (en) | 1978-11-15 |
Family
ID=15178884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4572276A Expired GB1532527A (en) | 1975-11-13 | 1976-11-03 | Driving circuit arrangement suitable for a timepiece |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS5818639B2 (en) |
| DE (1) | DE2651582A1 (en) |
| GB (1) | GB1532527A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62137644U (en) * | 1986-02-19 | 1987-08-29 |
-
1975
- 1975-11-13 JP JP13659275A patent/JPS5818639B2/en not_active Expired
-
1976
- 1976-11-03 GB GB4572276A patent/GB1532527A/en not_active Expired
- 1976-11-12 DE DE19762651582 patent/DE2651582A1/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5260660A (en) | 1977-05-19 |
| DE2651582A1 (en) | 1977-05-26 |
| JPS5818639B2 (en) | 1983-04-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| PE20 | Patent expired after termination of 20 years |
Effective date: 19961102 |