JPS6333233U - - Google Patents
Info
- Publication number
- JPS6333233U JPS6333233U JP12758186U JP12758186U JPS6333233U JP S6333233 U JPS6333233 U JP S6333233U JP 12758186 U JP12758186 U JP 12758186U JP 12758186 U JP12758186 U JP 12758186U JP S6333233 U JPS6333233 U JP S6333233U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- center unit
- switching element
- current detection
- unit
- 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
- 230000008054 signal transmission Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims 4
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Dc Digital Transmission (AREA)
- Small-Scale Networks (AREA)
- Control Of Voltage And Current In General (AREA)
- Continuous-Control Power Sources That Use Transistors (AREA)
Description
第１図は本考案によるセンタユニツトを有する
信号伝送装置の一実施例を示す結線図、第２図は
従来の信号伝送装置の結線図である。
１：センタユニツト、２ａ，２ｂ：信号線、６
，１０，１６：トランジスタ、７：制御電源、８
：電流制限抵抗、１５：抵抗、１８：電流検出抵
抗、２１：電流検出回路。
FIG. 1 is a wiring diagram showing an embodiment of a signal transmission device having a center unit according to the present invention, and FIG. 2 is a wiring diagram of a conventional signal transmission device. 1: Center unit, 2a, 2b: Signal line, 6
, 10, 16: transistor, 7: control power supply, 8
: current limiting resistor, 15: resistor, 18: current detecting resistor, 21: current detecting circuit.
Claims (1)
して信号線に接続し、この信号線に端末ユニツト
を接続して前記センタユニツトと端末ユニツトと
の交信をこのセンタユニツトと端末ユニツトとに
設けたそれぞれの信号スイツチング素子のオン、
オフにより行う信号伝送装置のセンタユニツトに
おいて、前記センタユニツトの信号スイツチング
素子に直列に接続した電流検出抵抗を有しこの電
流検出抵抗に流れる電流を検出して信号を送出す
る電流検出回路と、前記電流制限抵抗に直列に接
続した抵抗とスイツチング素子との並列回路とを
備え、前記電流検出回路の信号により前記スイツ
チング素子を制御するようにしたことを特徴とす
る信号伝送装置のセンタユニツト。 The control power source of the center unit is connected to a signal line via a current limiting resistor, and a terminal unit is connected to this signal line, so that communication between the center unit and the terminal unit is achieved by connecting the center unit and the terminal unit to each other. Turn on the signal switching element,
In a center unit of a signal transmission device that is turned off, a current detection circuit having a current detection resistor connected in series to a signal switching element of the center unit detects a current flowing through the current detection resistor and sends a signal; 1. A center unit of a signal transmission device, comprising a parallel circuit of a switching element and a resistor connected in series with a current limiting resistor, and the switching element is controlled by a signal from the current detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12758186U JPS6333233U (en) | 1986-08-21 | 1986-08-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12758186U JPS6333233U (en) | 1986-08-21 | 1986-08-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6333233U true JPS6333233U (en) | 1988-03-03 |
Family
ID=31022469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12758186U Pending JPS6333233U (en) | 1986-08-21 | 1986-08-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6333233U (en) |
-
1986
- 1986-08-21 JP JP12758186U patent/JPS6333233U/ja active Pending