JPS522109A - Dc current supplying circuit - Google Patents

Dc current supplying circuit

Info

Publication number
JPS522109A
JPS522109A JP7660375A JP7660375A JPS522109A JP S522109 A JPS522109 A JP S522109A JP 7660375 A JP7660375 A JP 7660375A JP 7660375 A JP7660375 A JP 7660375A JP S522109 A JPS522109 A JP S522109A
Authority
JP
Japan
Prior art keywords
current supplying
supplying circuit
circuit
miniaturize
constituting
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
JP7660375A
Other languages
Japanese (ja)
Inventor
Tetsuo Takeshita
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP7660375A priority Critical patent/JPS522109A/en
Publication of JPS522109A publication Critical patent/JPS522109A/en
Pending 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
    • H04M19/005—Feeding arrangements without the use of line transformers

Landscapes

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

Abstract

PURPOSE:To miniaturize the circuit and reduce the weight of the circuit by constituting a DC current supplying circuit only with electronic parts without using choke coils or the like.
JP7660375A 1975-06-24 1975-06-24 Dc current supplying circuit Pending JPS522109A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7660375A JPS522109A (en) 1975-06-24 1975-06-24 Dc current supplying circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7660375A JPS522109A (en) 1975-06-24 1975-06-24 Dc current supplying circuit

Publications (1)

Publication Number Publication Date
JPS522109A true JPS522109A (en) 1977-01-08

Family

ID=13609893

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7660375A Pending JPS522109A (en) 1975-06-24 1975-06-24 Dc current supplying circuit

Country Status (1)

Country Link
JP (1) JPS522109A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53138209A (en) * 1977-05-09 1978-12-02 Hitachi Ltd Protective system of trunk circuit
US4737988A (en) * 1984-01-26 1988-04-12 Iwatsu Electric Co., Ltd. Current supply circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53138209A (en) * 1977-05-09 1978-12-02 Hitachi Ltd Protective system of trunk circuit
JPS572236B2 (en) * 1977-05-09 1982-01-14
US4737988A (en) * 1984-01-26 1988-04-12 Iwatsu Electric Co., Ltd. Current supply circuit

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