JPS57174942A - Line repeater - Google Patents

Line repeater

Info

Publication number
JPS57174942A
JPS57174942A JP5914881A JP5914881A JPS57174942A JP S57174942 A JPS57174942 A JP S57174942A JP 5914881 A JP5914881 A JP 5914881A JP 5914881 A JP5914881 A JP 5914881A JP S57174942 A JPS57174942 A JP S57174942A
Authority
JP
Japan
Prior art keywords
terminal
diodes
flows
output
separated
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
JP5914881A
Other languages
Japanese (ja)
Inventor
Shigeo Okada
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 JP5914881A priority Critical patent/JPS57174942A/en
Publication of JPS57174942A publication Critical patent/JPS57174942A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/44—Arrangements for feeding power to a repeater along the transmission line

Landscapes

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

Abstract

PURPOSE:To enable to provide a sort of repeater bidirectionally, by generating a prescribed voltage to a Zener diode in incoming and outgoing transmission directions. CONSTITUTION:In a power supply circuit 1, four diodes 2, 3, 5 and 6 are connected to a bridge type full wave rectifying circuit, and a Zener diode 4 is connected between two output terminals. A power supply current flowing from a communication signal input terminal 10 is separated at an input section 8 and superimposed on the communication current via an output section through the diodes 2, 4 and 6 and flows from a communicaton signal output terminal 11. In case of flowing from the terminal 11, the current is separated at the output section and flows from the terminal 10 via the input section 8 through the diodes 5, 4 and 3. Thus, in any case, the diode 4 generates a constant voltage and the power is supplied to an amplifier 7.
JP5914881A 1981-04-21 1981-04-21 Line repeater Pending JPS57174942A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5914881A JPS57174942A (en) 1981-04-21 1981-04-21 Line repeater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5914881A JPS57174942A (en) 1981-04-21 1981-04-21 Line repeater

Publications (1)

Publication Number Publication Date
JPS57174942A true JPS57174942A (en) 1982-10-27

Family

ID=13104958

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5914881A Pending JPS57174942A (en) 1981-04-21 1981-04-21 Line repeater

Country Status (1)

Country Link
JP (1) JPS57174942A (en)

Similar Documents

Publication Publication Date Title
US4621170A (en) Means of transmitting signals along a line while also providing a direct voltage source
ES8308434A1 (en) Connecting unit for a ring bus.
KR830008448A (en) Linear Propagation Rectifier Circuit
CA2281156A1 (en) Assembly for signal transfer between a receiving station and a transmitting station as well as for power supply of the transmitting station
MY103302A (en) Direct current power supply
JPS57174942A (en) Line repeater
TW344925B (en) Circuit arrangement for direct voltage and alternating voltage decoupling
EP0084259A3 (en) Sample & hold circuit
GB1471709A (en) Microphone arrangements
ES545685A0 (en) A LINE CIRCUIT FOR THE CONNECTION OF A TELEPHONE SUBSCRIBER
KR930024345A (en) Structure to use passive line concentrator on coordinated token ring network
EP0189347A3 (en) Second order all pass network
KR820002311Y1 (en) Circuit for useing line voltage in telephone
KR890016819A (en) Door phone interface circuit in key phone system
SU1644199A1 (en) Device for data transmission and reception in a telecontrol system
SU1397955A1 (en) Device for remote control of bi-positional objects
SU1372536A1 (en) Stabilized converter
JPS5726906A (en) Distortion rejector
DE59306615D1 (en) ELECTRONIC COMPONENT
JPS647796A (en) Automatic communication equipment
FR2441302A1 (en) Telephone call charge counting circuit - uses photocoupler bridge network receiver circuit to enable counting of low and high frequency common mode charge signals while rejecting no
JPS56161724A (en) Alternating current two-wire type electronic switch
JPS56134832A (en) Two-wire photoelectric switch for alternating current and direct current
JPS6418317A (en) Digital-analog converter circuit
JPS647116A (en) Transistor constant voltage generating circuit