JPS5487269A - Electronic alarm watch - Google Patents
Electronic alarm watchInfo
- Publication number
- JPS5487269A JPS5487269A JP15470377A JP15470377A JPS5487269A JP S5487269 A JPS5487269 A JP S5487269A JP 15470377 A JP15470377 A JP 15470377A JP 15470377 A JP15470377 A JP 15470377A JP S5487269 A JPS5487269 A JP S5487269A
- Authority
- JP
- Japan
- Prior art keywords
- signals
- gate
- level
- output
- battery voltage
- 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
- G04G—ELECTRONIC TIME-PIECES
- G04G13/00—Producing acoustic time signals
- G04G13/02—Producing acoustic time signals at preselected times, e.g. alarm clocks
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electric Clocks (AREA)
- Electromechanical Clocks (AREA)
Abstract
PURPOSE:To lighten the load upon a battery and to prevent the display from becoming thinner and the watch from being stopped by varying the waveforms of alarm drive signals in a manner to reduce the current consumption in case the battery voltage is lowered. CONSTITUTION:When a battery voltage is sufficient and the output of a battery voltage detecting circuit 11 is at an ''L'' level, the output of a gate 10 also takes the ''L'' level, and the output of the gate 11 becomes the ANd signals of Q3 and Q12. When coincidence circuits 6 and 7 take an ''H'' level as well as the output of the gate G1, the AND signals of Q3 and Q12 are generated at the gate G3 to drive a speaker SP. When the coincidence circuits 6 and 7 take the ''H'' level for the output of the detecting circuit 11 at the ''H'' level upon reduction in the battery voltage, the AND signals of Q2, Q3 and Q12 are generated at the gate G3 to drive the speaker SP. Here, the AND signals of Q2, Q3 and Q12 are the signals having the half duty of the AND signals of Q3 and Q12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15470377A JPS5487269A (en) | 1977-12-22 | 1977-12-22 | Electronic alarm watch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15470377A JPS5487269A (en) | 1977-12-22 | 1977-12-22 | Electronic alarm watch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5487269A true JPS5487269A (en) | 1979-07-11 |
Family
ID=15590097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15470377A Pending JPS5487269A (en) | 1977-12-22 | 1977-12-22 | Electronic alarm watch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5487269A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5953296U (en) * | 1982-09-30 | 1984-04-07 | リズム時計工業株式会社 | Watch battery life notification circuit |
| WO1997017636A1 (en) * | 1995-11-07 | 1997-05-15 | Citizen Watch Co., Ltd. | Heavy load driving device for electronic timepiece |
-
1977
- 1977-12-22 JP JP15470377A patent/JPS5487269A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5953296U (en) * | 1982-09-30 | 1984-04-07 | リズム時計工業株式会社 | Watch battery life notification circuit |
| WO1997017636A1 (en) * | 1995-11-07 | 1997-05-15 | Citizen Watch Co., Ltd. | Heavy load driving device for electronic timepiece |
| US5886953A (en) * | 1995-11-07 | 1999-03-23 | Citizen Watch Co., Ltd. | Heavy-load drive apparatus for an electronic watch |
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