JPS5664521A - Connecting circuit - Google Patents

Connecting circuit

Info

Publication number
JPS5664521A
JPS5664521A JP13932979A JP13932979A JPS5664521A JP S5664521 A JPS5664521 A JP S5664521A JP 13932979 A JP13932979 A JP 13932979A JP 13932979 A JP13932979 A JP 13932979A JP S5664521 A JPS5664521 A JP S5664521A
Authority
JP
Japan
Prior art keywords
line
circuit
amplifier
transmission
diode
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
JP13932979A
Other languages
Japanese (ja)
Inventor
Kazuo Oota
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP13932979A priority Critical patent/JPS5664521A/en
Publication of JPS5664521A publication Critical patent/JPS5664521A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/44—Transmit/receive switching
    • H04B1/48—Transmit/receive switching in circuits for connecting transmitter and receiver to a common transmission path, e.g. by energy of transmitter

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transceivers (AREA)
  • Small-Scale Networks (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PURPOSE:To exclude the switch required for the transmitter/receiver plus the con trol circuit for the switch, by connecting the ciruit to which the diode and the resistance are connected in parallel between an amplifier and the transmission line and then making use of the impedance characteristics of the diode. CONSTITUTION:The impedance control circuit to which two units of diodes 31 and 32 plus a resistance are connected in parallel is connected between the amplifier 26 and the line 32A of one side and connected to the transmission line 11. At the same time, the other line 23B connected to the line 11 is connected to the amplifier 26 as well as to the earth side of the receiving circuit 24. The transmission side of the circuit 24 is connected directly to the line 23A. Accordingly, the circuit is always connected to the line 11, and the amplifier 26 of the transmission side is also connected to the line 11 at all times via the impedance control circuit.
JP13932979A 1979-10-30 1979-10-30 Connecting circuit Pending JPS5664521A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13932979A JPS5664521A (en) 1979-10-30 1979-10-30 Connecting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13932979A JPS5664521A (en) 1979-10-30 1979-10-30 Connecting circuit

Publications (1)

Publication Number Publication Date
JPS5664521A true JPS5664521A (en) 1981-06-01

Family

ID=15242772

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13932979A Pending JPS5664521A (en) 1979-10-30 1979-10-30 Connecting circuit

Country Status (1)

Country Link
JP (1) JPS5664521A (en)

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