JPS53106508A - Power supply circuit for telephone set - Google Patents

Power supply circuit for telephone set

Info

Publication number
JPS53106508A
JPS53106508A JP2126577A JP2126577A JPS53106508A JP S53106508 A JPS53106508 A JP S53106508A JP 2126577 A JP2126577 A JP 2126577A JP 2126577 A JP2126577 A JP 2126577A JP S53106508 A JPS53106508 A JP S53106508A
Authority
JP
Japan
Prior art keywords
telephone set
power supply
supply circuit
excitation
economize
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
JP2126577A
Other languages
Japanese (ja)
Other versions
JPS607428B2 (en
Inventor
Osamu Enomoto
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 JP52021265A priority Critical patent/JPS607428B2/en
Publication of JPS53106508A publication Critical patent/JPS53106508A/en
Publication of JPS607428B2 publication Critical patent/JPS607428B2/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
    • H04M19/003—Arrangements for compensation of the DC flux in line transformers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)

Abstract

PURPOSE:To make small and economize the unit, by eliminating the adverse effect due to DC excitation of core, through cancelling the excitation due to DC current flowing into the windings split into two at the telephone set side of transformer.
JP52021265A 1977-02-28 1977-02-28 Telephone power supply circuit Expired JPS607428B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52021265A JPS607428B2 (en) 1977-02-28 1977-02-28 Telephone power supply circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52021265A JPS607428B2 (en) 1977-02-28 1977-02-28 Telephone power supply circuit

Publications (2)

Publication Number Publication Date
JPS53106508A true JPS53106508A (en) 1978-09-16
JPS607428B2 JPS607428B2 (en) 1985-02-25

Family

ID=12050265

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52021265A Expired JPS607428B2 (en) 1977-02-28 1977-02-28 Telephone power supply circuit

Country Status (1)

Country Link
JP (1) JPS607428B2 (en)

Also Published As

Publication number Publication date
JPS607428B2 (en) 1985-02-25

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