JPS56102152A - Channel current supplying system - Google Patents

Channel current supplying system

Info

Publication number
JPS56102152A
JPS56102152A JP426980A JP426980A JPS56102152A JP S56102152 A JPS56102152 A JP S56102152A JP 426980 A JP426980 A JP 426980A JP 426980 A JP426980 A JP 426980A JP S56102152 A JPS56102152 A JP S56102152A
Authority
JP
Japan
Prior art keywords
circuit
channel
current
voltage
channel current
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
JP426980A
Other languages
Japanese (ja)
Other versions
JPS6046910B2 (en
Inventor
Kazuo Hamasato
Shogo Usuda
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP55004269A priority Critical patent/JPS6046910B2/en
Publication of JPS56102152A publication Critical patent/JPS56102152A/en
Publication of JPS6046910B2 publication Critical patent/JPS6046910B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/001—Current supply source at the exchanger providing current to substations
    • H04M19/008—Using DC/DC converters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PURPOSE:To enable to minimize power loss in channel current supply circuits and to make it easier to form the circuit with ICs, by controlling the current to be supplied to the channel in accordance with the channel resistance. CONSTITUTION:Channel current supply circuit LCF which supplies the channel current, is equipped to terminal equipment TE through lines L1 and L2, and line voltage VL between lines L1 and L2 is detected by installing voltage detect circuit DETV using a voltage divider, etc., to this circuit LCF. Moreover, by providing a series resistance and current detect circuit DET1 using operation amplifier, etc., the detecting output from both circuits DETV and DET1 is added to operation circuit CAL and the channel current is decided by obtaining the channel resistance through the operation at circuit CAL. This channel current and the current detected at circuit DET1 are compared with each other through comparator CMP, and power loss in circuit LCF is minimized and the circuit is easily formed with ICs, by controlling power source conversion circuit CONV which supplies the voltage of wire B to lines L1 and L2 after converting the voltage into a prescribed voltage in accordance with the difference in current values compared at comparator CMP.
JP55004269A 1980-01-18 1980-01-18 Line current supply method Expired JPS6046910B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55004269A JPS6046910B2 (en) 1980-01-18 1980-01-18 Line current supply method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55004269A JPS6046910B2 (en) 1980-01-18 1980-01-18 Line current supply method

Publications (2)

Publication Number Publication Date
JPS56102152A true JPS56102152A (en) 1981-08-15
JPS6046910B2 JPS6046910B2 (en) 1985-10-18

Family

ID=11579815

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55004269A Expired JPS6046910B2 (en) 1980-01-18 1980-01-18 Line current supply method

Country Status (1)

Country Link
JP (1) JPS6046910B2 (en)

Also Published As

Publication number Publication date
JPS6046910B2 (en) 1985-10-18

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