JPH0213349U - - Google Patents
Info
- Publication number
- JPH0213349U JPH0213349U JP9072088U JP9072088U JPH0213349U JP H0213349 U JPH0213349 U JP H0213349U JP 9072088 U JP9072088 U JP 9072088U JP 9072088 U JP9072088 U JP 9072088U JP H0213349 U JPH0213349 U JP H0213349U
- Authority
- JP
- Japan
- Prior art keywords
- line
- switch
- connect
- slave units
- always
- 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
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Description
第１図は本考案の一実施例を示す図、第２図は
スイツチの例を示す図である。
１……親機、５……子機、６……スイツチ、７
……信号線、８……ばね。
FIG. 1 is a diagram showing an embodiment of the present invention, and FIG. 2 is a diagram showing an example of a switch. 1...Base unit, 5...Slave unit, 6...Switch, 7
...Signal line, 8...Spring.
Claims (1)
信号線途中に混線防止のスイツチを直列接続し、
スイツチは回線を常時オフ状態とし、作為的に回
線をオンになるるように構成したことを特徴とす
るインターホン。 Connect the master unit and two or more slave units in parallel, and connect the slave units in series with a switch to prevent crosstalk in the middle of the signal line.
The switch is an intercom characterized in that the line is always off and the line is intentionally turned on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9072088U JPH0213349U (en) | 1988-07-08 | 1988-07-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9072088U JPH0213349U (en) | 1988-07-08 | 1988-07-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0213349U true JPH0213349U (en) | 1990-01-26 |
Family
ID=31315233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9072088U Pending JPH0213349U (en) | 1988-07-08 | 1988-07-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0213349U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5031403A (en) * | 1973-07-24 | 1975-03-27 | ||
| JPS5259505A (en) * | 1975-11-10 | 1977-05-17 | Itagaki Kougiyou Kk | Speed broadcasting system |
-
1988
- 1988-07-08 JP JP9072088U patent/JPH0213349U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5031403A (en) * | 1973-07-24 | 1975-03-27 | ||
| JPS5259505A (en) * | 1975-11-10 | 1977-05-17 | Itagaki Kougiyou Kk | Speed broadcasting system |