JPH0238853U - - Google Patents
Info
- Publication number
- JPH0238853U JPH0238853U JP11739488U JP11739488U JPH0238853U JP H0238853 U JPH0238853 U JP H0238853U JP 11739488 U JP11739488 U JP 11739488U JP 11739488 U JP11739488 U JP 11739488U JP H0238853 U JPH0238853 U JP H0238853U
- Authority
- JP
- Japan
- Prior art keywords
- external device
- doorphone
- circuit
- constant current
- bridge
- 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
- 238000006243 chemical reaction Methods 0.000 claims 2
- 230000008054 signal transmission Effects 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Devices For Supply Of Signal Current (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11739488U JPH0238853U (un) | 1988-09-08 | 1988-09-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11739488U JPH0238853U (un) | 1988-09-08 | 1988-09-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0238853U true JPH0238853U (un) | 1990-03-15 |
Family
ID=31360819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11739488U Pending JPH0238853U (un) | 1988-09-08 | 1988-09-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0238853U (un) |
-
1988
- 1988-09-08 JP JP11739488U patent/JPH0238853U/ja active Pending
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