JPS57150254A - Branching device - Google Patents
Branching deviceInfo
- Publication number
- JPS57150254A JPS57150254A JP56035695A JP3569581A JPS57150254A JP S57150254 A JPS57150254 A JP S57150254A JP 56035695 A JP56035695 A JP 56035695A JP 3569581 A JP3569581 A JP 3569581A JP S57150254 A JPS57150254 A JP S57150254A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signal
- capacitor
- resistance
- potential
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
Landscapes
- Small-Scale Networks (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
Abstract
PURPOSE:To operate the other terminal of a branch signal line without being influenced by short circuit, by disconnecting a controlling circuit in a branching device, in case short circuit has occurred in one terminal side of the branch signal line. CONSTITUTION:A main device 1 is connected to a branching device 2 by signal lines (a), (b), and the device 2 is connected to terminal circuits 3-6, 7-10 by signal lines (c), (d) and (e), (f), respectively. For instance, when a signal (d) and a grounding circuit GND2 are short-circuited, charged voltage of a capacitor C1 is discharged by a resistance R6, the capacitor C1 , the line (d), and a closed circuit of the circuit GND2. Accordingly, the potential of a point G of a transistor TR4 becomes zero potential from negative by time constants of the resistance R6 and the capacitor C1 after the short circuit. Also, as for the positive potential of an electric power supply PS, the voltage drops by a resistance R7, a current is made to flow in the DS direction of the TR4, and a pole D is set to zero potential. As a result, the collector and the emitter of a TR3 are disconnected, therefore, the signal (f) is transmitted to the main device 1 through the signal line (b).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56035695A JPS57150254A (en) | 1981-03-11 | 1981-03-11 | Branching device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56035695A JPS57150254A (en) | 1981-03-11 | 1981-03-11 | Branching device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57150254A true JPS57150254A (en) | 1982-09-17 |
JPS6355256B2 JPS6355256B2 (en) | 1988-11-01 |
Family
ID=12449024
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56035695A Granted JPS57150254A (en) | 1981-03-11 | 1981-03-11 | Branching device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57150254A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5045505A (en) * | 1973-08-27 | 1975-04-23 | ||
JPS513140A (en) * | 1974-06-26 | 1976-01-12 | Hitachi Ltd |
-
1981
- 1981-03-11 JP JP56035695A patent/JPS57150254A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5045505A (en) * | 1973-08-27 | 1975-04-23 | ||
JPS513140A (en) * | 1974-06-26 | 1976-01-12 | Hitachi Ltd |
Also Published As
Publication number | Publication date |
---|---|
JPS6355256B2 (en) | 1988-11-01 |
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