JPH01135848U - - Google Patents
Info
- Publication number
- JPH01135848U JPH01135848U JP3151188U JP3151188U JPH01135848U JP H01135848 U JPH01135848 U JP H01135848U JP 3151188 U JP3151188 U JP 3151188U JP 3151188 U JP3151188 U JP 3151188U JP H01135848 U JPH01135848 U JP H01135848U
- Authority
- JP
- Japan
- Prior art keywords
- line
- detection transistor
- emitter
- inversion detection
- resistor
- 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
- 238000001514 detection method Methods 0.000 claims description 10
- 230000001681 protective effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3151188U JPH0623084Y2 (ja) | 1988-03-09 | 1988-03-09 | 電話回線の極性反転検出回路 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3151188U JPH0623084Y2 (ja) | 1988-03-09 | 1988-03-09 | 電話回線の極性反転検出回路 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01135848U true JPH01135848U (en:Method) | 1989-09-18 |
| JPH0623084Y2 JPH0623084Y2 (ja) | 1994-06-15 |
Family
ID=31257412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3151188U Expired - Lifetime JPH0623084Y2 (ja) | 1988-03-09 | 1988-03-09 | 電話回線の極性反転検出回路 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0623084Y2 (en:Method) |
-
1988
- 1988-03-09 JP JP3151188U patent/JPH0623084Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0623084Y2 (ja) | 1994-06-15 |