JPH0378397U - - Google Patents
Info
- Publication number
- JPH0378397U JPH0378397U JP13702989U JP13702989U JPH0378397U JP H0378397 U JPH0378397 U JP H0378397U JP 13702989 U JP13702989 U JP 13702989U JP 13702989 U JP13702989 U JP 13702989U JP H0378397 U JPH0378397 U JP H0378397U
- Authority
- JP
- Japan
- Prior art keywords
- output
- amplifier
- signals
- alarm
- speaker
- 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
- 230000002265 prevention Effects 0.000 claims 1
- 230000005236 sound signal Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Alarm Systems (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13702989U JPH0378397U (pt) | 1989-11-27 | 1989-11-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13702989U JPH0378397U (pt) | 1989-11-27 | 1989-11-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0378397U true JPH0378397U (pt) | 1991-08-08 |
Family
ID=31684204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13702989U Pending JPH0378397U (pt) | 1989-11-27 | 1989-11-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0378397U (pt) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6435496A (en) * | 1987-07-30 | 1989-02-06 | Noboru Denki Seisakusho Kk | High sound volume bell circuit |
-
1989
- 1989-11-27 JP JP13702989U patent/JPH0378397U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6435496A (en) * | 1987-07-30 | 1989-02-06 | Noboru Denki Seisakusho Kk | High sound volume bell circuit |