JPH033865U - - Google Patents
Info
- Publication number
- JPH033865U JPH033865U JP6455789U JP6455789U JPH033865U JP H033865 U JPH033865 U JP H033865U JP 6455789 U JP6455789 U JP 6455789U JP 6455789 U JP6455789 U JP 6455789U JP H033865 U JPH033865 U JP H033865U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- telephone
- detection circuit
- telephone line
- set value
- 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
- 238000001514 detection method Methods 0.000 claims description 8
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6455789U JPH033865U (en]) | 1989-06-01 | 1989-06-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6455789U JPH033865U (en]) | 1989-06-01 | 1989-06-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH033865U true JPH033865U (en]) | 1991-01-16 |
Family
ID=31595611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6455789U Pending JPH033865U (en]) | 1989-06-01 | 1989-06-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH033865U (en]) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60105355A (ja) * | 1983-11-14 | 1985-06-10 | Nec Corp | 電話機 |
| JPS6436251A (en) * | 1987-07-31 | 1989-02-07 | Nec Corp | Line closing control circuit |
-
1989
- 1989-06-01 JP JP6455789U patent/JPH033865U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60105355A (ja) * | 1983-11-14 | 1985-06-10 | Nec Corp | 電話機 |
| JPS6436251A (en) * | 1987-07-31 | 1989-02-07 | Nec Corp | Line closing control circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH033865U (en]) | ||
| JPS643246Y2 (en]) | ||
| JPH0423354U (en]) | ||
| KR890005719Y1 (ko) | 전화기의 병렬선로 상태 감지회로 | |
| JPH0735485Y2 (ja) | 電話の割り込み防止装置 | |
| JPH0450545Y2 (en]) | ||
| JPH033868U (en]) | ||
| JPH049619Y2 (en]) | ||
| JPH01146651U (en]) | ||
| JPS5923760U (ja) | 発光ダイオ−ド切替回路 | |
| JPH01156651U (en]) | ||
| JPS6433268U (en]) | ||
| JPS61154051U (en]) | ||
| JPS6114560U (ja) | 公衆電話機の着信検知回路 | |
| JPS6347655U (en]) | ||
| JPS6431414U (en]) | ||
| JPH0370023U (en]) | ||
| JPS60108143U (ja) | 過大入力電圧を阻止する電源装置 | |
| JPS59146898U (ja) | ２段のフイラメントを有する電球の切換回路 | |
| JPS6266457U (en]) | ||
| JPH01127388U (en]) | ||
| JPH01105223U (en]) | ||
| JPS63122894U (en]) | ||
| JPS62178623U (en]) | ||
| JPS63117146U (en]) |