JPS60114459U - Protection devices for transmission systems - Google Patents
Protection devices for transmission systemsInfo
- Publication number
- JPS60114459U JPS60114459U JP205584U JP205584U JPS60114459U JP S60114459 U JPS60114459 U JP S60114459U JP 205584 U JP205584 U JP 205584U JP 205584 U JP205584 U JP 205584U JP S60114459 U JPS60114459 U JP S60114459U
- Authority
- JP
- Japan
- Prior art keywords
- signal lines
- terminal devices
- transmission
- transmission systems
- protection devices
- 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
Landscapes
- Safety Devices In Control Systems (AREA)
- Small-Scale Networks (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来のシステムの伝送回路を中心とする要部の
構成例を示す図、第２図Ａは同じく交信信号のタイムチ
ャートの例を示す図、第２図Ｂは同じく交信信号の波形
例を示す図、第３図は本考案の伝送システムの伝送回路
を中心とする要部の構成例を示す図、第４図は同じ（信
号ライン間の波形例を示す図である。
１・・・センタ装置、２（２１〜２１ｎ）・・・端末装
置（端末）、ｌａ、２ａ・・・伝送制御部、３・・・電
流制限抵抗、４，５・・・送信用トランジスタ、７・・
・信号ライン、７ａ、７ｂ・・・ライン、８・・・直流
電源、Ｐ・・・非線形抵抗素子（抵抗）、９・・・アド
レススイッチ。Figure 1 is a diagram showing an example of the configuration of the main parts centering on the transmission circuit of a conventional system, Figure 2A is a diagram showing an example of a time chart of a communication signal, and Figure 2B is a waveform of a communication signal. Figure 3 is a diagram showing an example of the configuration of the main parts centering on the transmission circuit of the transmission system of the present invention, and Figure 4 is the same (a diagram showing an example of waveforms between signal lines.1. ... Center device, 2 (21 to 21n) ... Terminal device (terminal), la, 2a ... Transmission control section, 3 ... Current limiting resistor, 4, 5 ... Transmission transistor, 7.・
- Signal line, 7a, 7b... Line, 8... DC power supply, P... Nonlinear resistance element (resistance), 9... Address switch.
Claims (1)
する電源、該信号線を介して交信を行う複数の端末装置
、前記信号線を介して前記の各端末装置と交信を行うセ
ンタ装置、前記の各端末装置及びセンタ装置に設けられ
、前記２本の信号線の短絡と開放を行うことにより信号
を送出する送信用廂閉手段、からなる伝送システムにお
いて、前記の各端末装置に設けられた前記の各送信用間
−閉子段と直列に正の抵抗温度係数を有する非線形抵抗
素子を、それぞれ挿入したことを特徴とする伝送システ
ムの保護装置。A power source that supplies voltage to two common signal lines via a current limiting means, a plurality of terminal devices that communicate via the signal lines, and a center that communicates with each of the terminal devices via the signal lines. A transmission system comprising: a transmitting device, a transmission closing means provided in each of the terminal devices and the center device, and transmitting a signal by short-circuiting and opening the two signal lines; A protection device for a transmission system, characterized in that a nonlinear resistance element having a positive temperature coefficient of resistance is inserted in series with each of the transmission interlocking stages provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP205584U JPS60114459U (en) | 1984-01-11 | 1984-01-11 | Protection devices for transmission systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP205584U JPS60114459U (en) | 1984-01-11 | 1984-01-11 | Protection devices for transmission systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60114459U true JPS60114459U (en) | 1985-08-02 |
Family
ID=30475370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP205584U Pending JPS60114459U (en) | 1984-01-11 | 1984-01-11 | Protection devices for transmission systems |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60114459U (en) |
-
1984
- 1984-01-11 JP JP205584U patent/JPS60114459U/en active Pending
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