JPS5444897A - Alarm device - Google Patents
Alarm deviceInfo
- Publication number
- JPS5444897A JPS5444897A JP11180377A JP11180377A JPS5444897A JP S5444897 A JPS5444897 A JP S5444897A JP 11180377 A JP11180377 A JP 11180377A JP 11180377 A JP11180377 A JP 11180377A JP S5444897 A JPS5444897 A JP S5444897A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- driving
- sound
- electronic
- sound converter
- 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
Landscapes
- Alarm Systems (AREA)
Abstract
PURPOSE: To improve the alarm effect of a simply-constituted alarm device used as a flashing alarm buzzer, by eliminating a difference in alarm effect by sound and light due to a change in environment between the daytime and nighttime by making sound and light tune.
CONSTITUTION: Luminous body 2, luminous-body driving circuit 3 driving this luminous body 2, electronic-tone generating circuit 4 modulating a frequency by the output of driving circuit 3, and sound converter circuit 5 driving this electronic- tone generating circuit 4 are connected in parallel to power supply 1. Further, photoconductive element 9 exposed to ambient light is connected to power supply 1 to obtain the constitution which controls the driving current of sound converter 5. This sound converter 5 is provided with electronic-tone generating circuit 4, transistors 6 and 7 connected to photoconductive element 9, and sound converter 8. An other execution example is that voltage detection circuit 24 is provided across photoconductive element 9 so as to control the driving current of sound converter circuit 5. Then, the intensity of light is made to agree with an electronic tone, thereby improving the alarm effect.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11180377A JPS6010680B2 (en) | 1977-09-16 | 1977-09-16 | alarm |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11180377A JPS6010680B2 (en) | 1977-09-16 | 1977-09-16 | alarm |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5444897A true JPS5444897A (en) | 1979-04-09 |
JPS6010680B2 JPS6010680B2 (en) | 1985-03-19 |
Family
ID=14570544
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11180377A Expired JPS6010680B2 (en) | 1977-09-16 | 1977-09-16 | alarm |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6010680B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102236955A (en) * | 2010-04-21 | 2011-11-09 | 任文华 | Alarm circuit device |
-
1977
- 1977-09-16 JP JP11180377A patent/JPS6010680B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102236955A (en) * | 2010-04-21 | 2011-11-09 | 任文华 | Alarm circuit device |
Also Published As
Publication number | Publication date |
---|---|
JPS6010680B2 (en) | 1985-03-19 |
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