JPS5485645A - Data transmitting devicee - Google Patents

Data transmitting devicee

Info

Publication number
JPS5485645A
JPS5485645A JP15377577A JP15377577A JPS5485645A JP S5485645 A JPS5485645 A JP S5485645A JP 15377577 A JP15377577 A JP 15377577A JP 15377577 A JP15377577 A JP 15377577A JP S5485645 A JPS5485645 A JP S5485645A
Authority
JP
Japan
Prior art keywords
point
transmission line
resistance
current flows
power supply
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
Application number
JP15377577A
Other languages
Japanese (ja)
Inventor
Fumiaki Shigeoka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP15377577A priority Critical patent/JPS5485645A/en
Publication of JPS5485645A publication Critical patent/JPS5485645A/en
Pending legal-status Critical Current

Links

Landscapes

  • Bidirectional Digital Transmission (AREA)
  • Dc Digital Transmission (AREA)

Abstract

PURPOSE: To secure the two-way transmission and reception as well as to reduce number of the transmission line and the amount of the circuit component, by providing the sharing intermediate transmission line from both terminals to the transmission and reception circuits which cross each other.
CONSTITUTION: Photo coupler FC 15 and 19 are provided with the input and output directions contrary to FC9 and 3 respectively, and the both terminals share DC stabilizing power supply unit 7 connected by intermediate transmission line 26. With closure of contact 4, FC3 is actuated to turn on transistor Tr6. Then the current flows to the negative side from the positive side of unit 7 via point G- point D of resistance 16 - transmission line 24 - point F - collector and emitter of Tr6 - point I, and then via point G - resistance 8 - primary LED of FC9 - point K - transmission line 26-point E - diode 17 - Tr6 - point I respectively. On the other hand, the current flows to the negative side from the positive side of DC stabilizing power supply unit 11 via point 0 - resistance 10 - photo transistor - point P, and thus the output voltage of output terminal 12 becomes zero to transmit the signals.
COPYRIGHT: (C)1979,JPO&Japio
JP15377577A 1977-12-20 1977-12-20 Data transmitting devicee Pending JPS5485645A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15377577A JPS5485645A (en) 1977-12-20 1977-12-20 Data transmitting devicee

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15377577A JPS5485645A (en) 1977-12-20 1977-12-20 Data transmitting devicee

Publications (1)

Publication Number Publication Date
JPS5485645A true JPS5485645A (en) 1979-07-07

Family

ID=15569859

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15377577A Pending JPS5485645A (en) 1977-12-20 1977-12-20 Data transmitting devicee

Country Status (1)

Country Link
JP (1) JPS5485645A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63288530A (en) * 1987-05-20 1988-11-25 Fujitsu Ten Ltd Signal transmitter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63288530A (en) * 1987-05-20 1988-11-25 Fujitsu Ten Ltd Signal transmitter

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