[go: up one dir, main page]

JPS5413716A - Signal superposing circuit - Google Patents

Signal superposing circuit

Info

Publication number
JPS5413716A
JPS5413716A JP7935877A JP7935877A JPS5413716A JP S5413716 A JPS5413716 A JP S5413716A JP 7935877 A JP7935877 A JP 7935877A JP 7935877 A JP7935877 A JP 7935877A JP S5413716 A JPS5413716 A JP S5413716A
Authority
JP
Japan
Prior art keywords
signal superposing
superposing circuit
wire
circuit
transformer
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
JP7935877A
Other languages
Japanese (ja)
Inventor
Yoshitaka Osakabe
Junji Asakura
Masami Miura
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 JP7935877A priority Critical patent/JPS5413716A/en
Publication of JPS5413716A publication Critical patent/JPS5413716A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q3/00Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

PURPOSE:To obtain a two-wire signal superposing circuit of simple constitution, by composing a hybrid transformer of single-input operational amplifiers and differential-input amplifiers, by mutually connecting four-wire parts of this transformer, and by connecting the two-wire circuit part to both outgoing and incoming circuits.
JP7935877A 1977-07-01 1977-07-01 Signal superposing circuit Pending JPS5413716A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7935877A JPS5413716A (en) 1977-07-01 1977-07-01 Signal superposing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7935877A JPS5413716A (en) 1977-07-01 1977-07-01 Signal superposing circuit

Publications (1)

Publication Number Publication Date
JPS5413716A true JPS5413716A (en) 1979-02-01

Family

ID=13687665

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7935877A Pending JPS5413716A (en) 1977-07-01 1977-07-01 Signal superposing circuit

Country Status (1)

Country Link
JP (1) JPS5413716A (en)

Similar Documents

Publication Publication Date Title
JPS52143702A (en) System for directly connecting aid of telephone circuit networks
JPS526004A (en) Amplifier circuit for telephone network
GB1545453A (en) Telephone line connecting circuit
JPS52119806A (en) Circuit for evaluating line status change for communication system such as telephone system
JPS5413716A (en) Signal superposing circuit
JPS52139302A (en) Automatic circuit switching unit
JPS5398709A (en) Test system for communicating line
JPS5386502A (en) Control unit for telephone circuit netwoek
JPS5693462A (en) Active voice circuit network for telephone set
JPS55105466A (en) Exchange system
JPS5413715A (en) Four-wire switching system
JPS5232210A (en) Detection system for subscriber response signal
JPS53123005A (en) Automatic calling circuit
JPS53133316A (en) Urgent interruption communication system
JPS5312201A (en) Push-pull photo communication system
JPS5396710A (en) Connection system for four-wire-two-wire switch terminating circuit
JPS53115111A (en) Time-space division hybrid talking switch circuit network
JPS52120709A (en) Common line signal system
JPS56160168A (en) Exchange system
JPS51132911A (en) Transfer method of an electronic switchboard
JPS53104110A (en) Radio relay set
JPS5225541A (en) Two-wire-four-wire conversion circuit
JPS5330812A (en) Multiplex communication path radio talking equipment
JPS532011A (en) Calling signal and calling tone transmitting at telephone exchange
JPS5283105A (en) Connection system for talkie trunk