JPS5482268A - Electronic watch with alarm - Google Patents
Electronic watch with alarmInfo
- Publication number
- JPS5482268A JPS5482268A JP15001077A JP15001077A JPS5482268A JP S5482268 A JPS5482268 A JP S5482268A JP 15001077 A JP15001077 A JP 15001077A JP 15001077 A JP15001077 A JP 15001077A JP S5482268 A JPS5482268 A JP S5482268A
- Authority
- JP
- Japan
- Prior art keywords
- buzzer
- output terminals
- alarm
- sounding
- inverters
- 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.)
- Granted
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)
- Electromechanical Clocks (AREA)
Abstract
PURPOSE:To achieve the reduction in the number of parts by driving a buzzer without using any externally mounted transistors. CONSTITUTION:Two output terminals 110, 111 are provided to an alarm shaping circuit 4 and a buzzer 5 is connected between these output terminals 110, 111. Then, when the outputs f1 thru f3 from the frequency dividing part are inputted to the control gate CG synthesized by a NAND gate, inverter and exclusive-OR circuit, the signal having been modulated by the output f1 is outputted at every 1/f3 second only for the period of 1/f2, and the phases thereof become mutually antiphases at the sounding of the buzzer. At the quiescence of sounding, the phases become mutually in-phase and appear in the output terminals 110, 111 via predriving inverters 117, 118 and driving inverters 115, 116 after nodes 113, 114, whereby the buzzer is driven. Hence, the need for any externally mounted transistors is eliminated.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15001077A JPS5482268A (en) | 1977-12-14 | 1977-12-14 | Electronic watch with alarm |
GB7838474A GB2008810B (en) | 1977-10-03 | 1978-09-28 | Electronic alarm timepiece |
US05/948,633 US4280210A (en) | 1977-10-03 | 1978-10-03 | Electronic alarm timepiece |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15001077A JPS5482268A (en) | 1977-12-14 | 1977-12-14 | Electronic watch with alarm |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5482268A true JPS5482268A (en) | 1979-06-30 |
JPS613439B2 JPS613439B2 (en) | 1986-02-01 |
Family
ID=15487495
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15001077A Granted JPS5482268A (en) | 1977-10-03 | 1977-12-14 | Electronic watch with alarm |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5482268A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55146500A (en) * | 1979-05-02 | 1980-11-14 | Mitsubishi Electric Corp | System for driving piezoelectric buzzer |
JPS645210A (en) * | 1987-06-15 | 1989-01-10 | Ind Tech Res Inst | Electronic tone generator equipped with push-pull amplifier |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4985514A (en) * | 1972-12-22 | 1974-08-16 | ||
JPS4991278A (en) * | 1972-12-29 | 1974-08-31 | ||
JPS5039175A (en) * | 1973-08-09 | 1975-04-11 | ||
JPS5159293A (en) * | 1974-11-21 | 1976-05-24 | Nitsutan Denshi Kk | |
JPS5263764A (en) * | 1975-11-22 | 1977-05-26 | Seiko Instr & Electronics Ltd | Electronic watch with alarm |
JPS5275372A (en) * | 1975-12-19 | 1977-06-24 | Seiko Instr & Electronics Ltd | Electronic watch |
-
1977
- 1977-12-14 JP JP15001077A patent/JPS5482268A/en active Granted
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4985514A (en) * | 1972-12-22 | 1974-08-16 | ||
JPS4991278A (en) * | 1972-12-29 | 1974-08-31 | ||
JPS5039175A (en) * | 1973-08-09 | 1975-04-11 | ||
JPS5159293A (en) * | 1974-11-21 | 1976-05-24 | Nitsutan Denshi Kk | |
JPS5263764A (en) * | 1975-11-22 | 1977-05-26 | Seiko Instr & Electronics Ltd | Electronic watch with alarm |
JPS5275372A (en) * | 1975-12-19 | 1977-06-24 | Seiko Instr & Electronics Ltd | Electronic watch |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55146500A (en) * | 1979-05-02 | 1980-11-14 | Mitsubishi Electric Corp | System for driving piezoelectric buzzer |
JPS6133200B2 (en) * | 1979-05-02 | 1986-07-31 | Mitsubishi Electric Corp | |
JPS645210A (en) * | 1987-06-15 | 1989-01-10 | Ind Tech Res Inst | Electronic tone generator equipped with push-pull amplifier |
Also Published As
Publication number | Publication date |
---|---|
JPS613439B2 (en) | 1986-02-01 |
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