JPS60156465U - Signal line disconnection detection circuit - Google Patents
Signal line disconnection detection circuitInfo
- Publication number
- JPS60156465U JPS60156465U JP4488884U JP4488884U JPS60156465U JP S60156465 U JPS60156465 U JP S60156465U JP 4488884 U JP4488884 U JP 4488884U JP 4488884 U JP4488884 U JP 4488884U JP S60156465 U JPS60156465 U JP S60156465U
- Authority
- JP
- Japan
- Prior art keywords
- signal line
- disconnection detection
- disconnection
- switch means
- detection circuit
- 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
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は、信号線の断線検知回路の従来例を示す回路、
第２図は、この考案の一実施例を示す回路図である。
１・・・主信号線、２・・・断線検知信号線、３・・・
信号線、６・・・電圧発生装置、７，８・・・３ステー
トバツフアゲート、（第１、第２のスイッチ手段）、９
・・・断線表示器、１０，１１，１３，１４・・・３ス
テートバツフアゲート、−１２，１５・・・ゲート回路
（第３、第４のスイッチ手段）。FIG. 1 shows a conventional example of a signal line disconnection detection circuit.
FIG. 2 is a circuit diagram showing an embodiment of this invention. 1... Main signal line, 2... Disconnection detection signal line, 3...
Signal line, 6... Voltage generator, 7, 8... 3-state buffer gate, (first and second switch means), 9
. . . Disconnection indicator, 10, 11, 13, 14 . . . 3-state buffer gate, -12, 15 . . . Gate circuit (third and fourth switch means).
Claims (1)
前記断線検知信号線の一端を第１のスイッチ手段を介し
て前記主信号線の断線検知範囲の一端に接続すると共に
、前記主信号線の断線検知範囲の他端を第２スイッチ手
段を介して断線表示器に接続し、且つ前記主信号線の断
線検知範囲の両端を夫々第３、第４のスイッチ手段を介
して断線検知範囲外の主信号線と接続し、前記第１、第
２のスイッチ手段をオンすると共に、前記第３、第４の
スイッチ手段をオフにして前記断線検知信号線の他端か
ら直流の断線検知電流を流した時の前記断線表示器の表
示状態によって前記信号線の断線を検知するようにした
ことを特徴とする信号線の断線検知回路。In a signal line having a main signal line and a disconnection detection signal line,
One end of the disconnection detection signal line is connected to one end of the disconnection detection range of the main signal line via a first switch means, and the other end of the disconnection detection range of the main signal line is connected via a second switch means. connected to a disconnection indicator, and connecting both ends of the disconnection detection range of the main signal line to the main signal line outside the disconnection detection range via third and fourth switch means, respectively; The signal line is determined by the display state of the disconnection indicator when the switch means is turned on, the third and fourth switch means are turned off, and a DC disconnection detection current is caused to flow from the other end of the disconnection detection signal line. A signal line disconnection detection circuit is characterized in that it detects a disconnection of a signal line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4488884U JPS60156465U (en) | 1984-03-28 | 1984-03-28 | Signal line disconnection detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4488884U JPS60156465U (en) | 1984-03-28 | 1984-03-28 | Signal line disconnection detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60156465U true JPS60156465U (en) | 1985-10-18 |
Family
ID=30557876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4488884U Pending JPS60156465U (en) | 1984-03-28 | 1984-03-28 | Signal line disconnection detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60156465U (en) |
-
1984
- 1984-03-28 JP JP4488884U patent/JPS60156465U/en active Pending
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