JPS55123254A - Multiplex signal transmitter-receiver - Google Patents

Multiplex signal transmitter-receiver

Info

Publication number
JPS55123254A
JPS55123254A JP16391179A JP16391179A JPS55123254A JP S55123254 A JPS55123254 A JP S55123254A JP 16391179 A JP16391179 A JP 16391179A JP 16391179 A JP16391179 A JP 16391179A JP S55123254 A JPS55123254 A JP S55123254A
Authority
JP
Japan
Prior art keywords
phase
power supply
signal
power
terminals
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
Application number
JP16391179A
Other languages
Japanese (ja)
Other versions
JPS5633909B2 (en
Inventor
Tadahiko Nakamura
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.)
Sintokogio Ltd
Original Assignee
Sintokogio Ltd
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 Sintokogio Ltd filed Critical Sintokogio Ltd
Priority to JP16391179A priority Critical patent/JPS55123254A/en
Publication of JPS55123254A publication Critical patent/JPS55123254A/en
Publication of JPS5633909B2 publication Critical patent/JPS5633909B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/14—Monitoring arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

PURPOSE:To detect securely phase absence and a falut of a diode by using a n -phase AC power supply as a main signal AC power supply, by using it as a sub- signal AC power supply by inverting its phase by 180 degrees, and by providing a selection switch unit and abnormality detection circuit. CONSTITUTION:Connecting a three-phase AC power supply to power terminals 1- 3 of transmitter S obtains main signal AC power supplies shifting in phase by 120 degrees equivalent to the power phase at terminals 7, 9 and 11, and sub-signal AC power supplies further phase-inverted by 180 degrees at terminals 8, 10 and 12. Next, alternate positive and negative signal waveform voltages selected by selection switch unit 45 are extracted corresponding to the output of a high-frequency oscillator and then sent to transmission line 83. Here, a receiver is provided with an abnormality detection circut to put an abnormality detection relay into operation. Thus, when the diode of the diode matrix circuit of the transmitter or receiver gets out of order, or when the phase absence of the three-phase AC power supply or main and sub signal AC power supplies occurs, it can securely be detected.
JP16391179A 1979-12-17 1979-12-17 Multiplex signal transmitter-receiver Granted JPS55123254A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16391179A JPS55123254A (en) 1979-12-17 1979-12-17 Multiplex signal transmitter-receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16391179A JPS55123254A (en) 1979-12-17 1979-12-17 Multiplex signal transmitter-receiver

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP50006125A Division JPS5180707A (en) 1975-01-11 1975-01-11 TAJUSHINGO SOJUSHINSOCHI

Publications (2)

Publication Number Publication Date
JPS55123254A true JPS55123254A (en) 1980-09-22
JPS5633909B2 JPS5633909B2 (en) 1981-08-06

Family

ID=15783160

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16391179A Granted JPS55123254A (en) 1979-12-17 1979-12-17 Multiplex signal transmitter-receiver

Country Status (1)

Country Link
JP (1) JPS55123254A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50294A (en) * 1973-05-11 1975-01-06
JPS501409A (en) * 1973-04-10 1975-01-09

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS501409A (en) * 1973-04-10 1975-01-09
JPS50294A (en) * 1973-05-11 1975-01-06

Also Published As

Publication number Publication date
JPS5633909B2 (en) 1981-08-06

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