JPS5564462A - Data signal receiving circuit - Google Patents

Data signal receiving circuit

Info

Publication number
JPS5564462A
JPS5564462A JP13725578A JP13725578A JPS5564462A JP S5564462 A JPS5564462 A JP S5564462A JP 13725578 A JP13725578 A JP 13725578A JP 13725578 A JP13725578 A JP 13725578A JP S5564462 A JPS5564462 A JP S5564462A
Authority
JP
Japan
Prior art keywords
transformer
earth
terminal
data signal
output
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
JP13725578A
Other languages
Japanese (ja)
Inventor
Yasuyoshi Nagao
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP13725578A priority Critical patent/JPS5564462A/en
Publication of JPS5564462A publication Critical patent/JPS5564462A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0264—Arrangements for coupling to transmission lines
    • H04L25/0266—Arrangements for providing Galvanic isolation, e.g. by means of magnetic or capacitive coupling
    • H04L25/0268—Arrangements for providing Galvanic isolation, e.g. by means of magnetic or capacitive coupling with modulation and subsequent demodulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)

Abstract

PURPOSE:To realize ternary communication using marks, spaces and zero, by a circuit constitution which has input terminals insulated from the earth and provides simple balance-imbalance signal boltage conversion with exterme fidelity. CONSTITUTION:When mark data signals are applied to input terminals 30 and 31 insulated from the earth, a current at either terminal, e.g. 31 flows to input terminal 30 by way of resistance 32, diode 33, the center tap of the primary winding of transformer 34, diodes 35 and 36 providing switching operation by branching into two, both terminals of the secondary winding of transformer 37, and its center tap, thereby tuning diode switches 35 and 36 ON. Therefore, an alternating current, the output of oscillator 38, is transferred to transformer 34 by way of transformer 37, and diode switches 35 and 36 and further converted into a direct current through rectifier circuit 39, so that a data signal output of plus polarity will be sent out from output terminal 41 to the earth through resistance 40.
JP13725578A 1978-11-09 1978-11-09 Data signal receiving circuit Pending JPS5564462A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13725578A JPS5564462A (en) 1978-11-09 1978-11-09 Data signal receiving circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13725578A JPS5564462A (en) 1978-11-09 1978-11-09 Data signal receiving circuit

Publications (1)

Publication Number Publication Date
JPS5564462A true JPS5564462A (en) 1980-05-15

Family

ID=15194378

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13725578A Pending JPS5564462A (en) 1978-11-09 1978-11-09 Data signal receiving circuit

Country Status (1)

Country Link
JP (1) JPS5564462A (en)

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