JPS62173844U - - Google Patents
Info
- Publication number
- JPS62173844U JPS62173844U JP6194386U JP6194386U JPS62173844U JP S62173844 U JPS62173844 U JP S62173844U JP 6194386 U JP6194386 U JP 6194386U JP 6194386 U JP6194386 U JP 6194386U JP S62173844 U JPS62173844 U JP S62173844U
- Authority
- JP
- Japan
- Prior art keywords
- input
- output terminals
- data signal
- pair
- constant voltage
- 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
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Bidirectional Digital Transmission (AREA)
- Dc Digital Transmission (AREA)
Description
第１図は本考案に係るデータ通信装置の一実施
例を示す電気回路図、第２図は同上装置において
第１の機器から第２の機器にデータ通信を行なつ
た場合の通信線間の電圧波形図、第３図は従来の
データ通信装置の電気回路図、第４図は同上従来
装置において第１の機器から第２の機器にデータ
通信を行なつた場合の通信線間の電圧波形図であ
る。
１……第１の機器、２……第２の機器、３，１
２……データ信号供給端子、９，１７……データ
信号受信端子、１０，１１……通信線、１４……
フオトカプラ。
Fig. 1 is an electric circuit diagram showing an embodiment of the data communication device according to the present invention, and Fig. 2 shows the connection between communication lines when data communication is performed from the first device to the second device in the same device. Voltage waveform diagram, Figure 3 is an electrical circuit diagram of a conventional data communication device, and Figure 4 is a voltage waveform between communication lines when data communication is performed from the first device to the second device in the same conventional device. It is a diagram. 1...First device, 2...Second device, 3,1
2...Data signal supply terminal, 9, 17...Data signal reception terminal, 10, 11...Communication line, 14...
photo coupler.
Claims (1)
スイツチング素子と斯るスイツチング素子に上記
データ信号を供給するデータ信号供給端子と上記
スイツチング素子の出力側に接続された一対の入
出力端子とを具備する第１の機器と、 一対の入出力端子とこれらの入出力端子の一方
の入出力端子に接続された電源と他方の入出力端
子に接続されたデータ信号受信端子とを具備する
第２の機器と、 上記第１の機器の入出力端子と上記第２の機器
の入出力端子を接続する一対の通信線とを具備し
、上記スイツチング素子のオン、オフに基づいて
第１の機器から第２の機器に上記通信線を介して
データ信号を伝送するデータ通信装置において、 上記第２の機器の入出力端子間に定電圧素子を
接続し、上記第１の機器のスイツチング素子のオ
フ時に上記通信線路間の電圧が上記定電圧素子の
定電圧以下となるようにした事を特徴とするデー
タ通信装置。[Claims for Utility Model Registration] A switching element that turns on and off based on an input data signal, a data signal supply terminal that supplies the data signal to the switching element, and a pair of switching elements connected to the output side of the switching element. a first device comprising an input/output terminal, a pair of input/output terminals, a power supply connected to one input/output terminal of these input/output terminals, and a data signal receiving terminal connected to the other input/output terminal; and a pair of communication lines connecting the input/output terminals of the first device and the input/output terminal of the second device, and a pair of communication lines connecting the input/output terminals of the first device and the second device, In a data communication device that transmits a data signal from a first device to a second device via the communication line, a constant voltage element is connected between the input and output terminals of the second device, and a constant voltage element is connected between the input and output terminals of the second device. A data communication device characterized in that the voltage between the communication lines is equal to or lower than the constant voltage of the constant voltage element when the switching element is turned off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6194386U JPH046281Y2 (en) | 1986-04-22 | 1986-04-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6194386U JPH046281Y2 (en) | 1986-04-22 | 1986-04-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62173844U true JPS62173844U (en) | 1987-11-05 |
| JPH046281Y2 JPH046281Y2 (en) | 1992-02-20 |
Family
ID=30895742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6194386U Expired JPH046281Y2 (en) | 1986-04-22 | 1986-04-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH046281Y2 (en) |
-
1986
- 1986-04-22 JP JP6194386U patent/JPH046281Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH046281Y2 (en) | 1992-02-20 |
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