JPS6151797B2 - - Google Patents
Info
- Publication number
- JPS6151797B2 JPS6151797B2 JP54145363A JP14536379A JPS6151797B2 JP S6151797 B2 JPS6151797 B2 JP S6151797B2 JP 54145363 A JP54145363 A JP 54145363A JP 14536379 A JP14536379 A JP 14536379A JP S6151797 B2 JPS6151797 B2 JP S6151797B2
- Authority
- JP
- Japan
- Prior art keywords
- counter
- signal
- output
- circuit
- frequency
- 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
- 238000000034 method Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 3
- 230000004397 blinking Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Landscapes
- Piezo-Electric Transducers For Audible Bands (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14536379A JPS5669690A (en) | 1979-11-12 | 1979-11-12 | System for controlling sound of piezoelectric buzzer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14536379A JPS5669690A (en) | 1979-11-12 | 1979-11-12 | System for controlling sound of piezoelectric buzzer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5669690A JPS5669690A (en) | 1981-06-11 |
JPS6151797B2 true JPS6151797B2 (un) | 1986-11-10 |
Family
ID=15383467
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14536379A Granted JPS5669690A (en) | 1979-11-12 | 1979-11-12 | System for controlling sound of piezoelectric buzzer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5669690A (un) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5785096A (en) * | 1980-11-17 | 1982-05-27 | Suwa Seikosha Kk | Buzzer drive system |
JPS62167300U (un) * | 1986-04-15 | 1987-10-23 | ||
JPS6390300U (un) * | 1986-11-29 | 1988-06-11 | ||
JP5366846B2 (ja) * | 2010-01-29 | 2013-12-11 | 能美防災株式会社 | 音響警報装置及びこれを備えた火災報知設備 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54670A (en) * | 1977-05-26 | 1979-01-06 | Seiko Instr & Electronics Ltd | Alarm wrista watch |
JPS5459176A (en) * | 1977-10-19 | 1979-05-12 | Rhythm Watch Co | Watch with alarm |
JPS5562497A (en) * | 1978-11-02 | 1980-05-10 | Tokyo Shibaura Electric Co | Alarm sound generator |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5744398Y2 (un) * | 1977-05-26 | 1982-09-30 |
-
1979
- 1979-11-12 JP JP14536379A patent/JPS5669690A/ja active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54670A (en) * | 1977-05-26 | 1979-01-06 | Seiko Instr & Electronics Ltd | Alarm wrista watch |
JPS5459176A (en) * | 1977-10-19 | 1979-05-12 | Rhythm Watch Co | Watch with alarm |
JPS5562497A (en) * | 1978-11-02 | 1980-05-10 | Tokyo Shibaura Electric Co | Alarm sound generator |
Also Published As
Publication number | Publication date |
---|---|
JPS5669690A (en) | 1981-06-11 |
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