JPS63229995A - 二線−四線変換回路 - Google Patents

二線−四線変換回路

Info

Publication number
JPS63229995A
JPS63229995A JP6240187A JP6240187A JPS63229995A JP S63229995 A JPS63229995 A JP S63229995A JP 6240187 A JP6240187 A JP 6240187A JP 6240187 A JP6240187 A JP 6240187A JP S63229995 A JPS63229995 A JP S63229995A
Authority
JP
Japan
Prior art keywords
wire
impedance
line
operational amplifier
conversion circuit
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
JP6240187A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0533880B2 (cg-RX-API-DMAC7.html
Inventor
Toshiyoshi Kitaguchi
北口　利喜
Kenji Sakai
謙二 酒井
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP6240187A priority Critical patent/JPS63229995A/ja
Publication of JPS63229995A publication Critical patent/JPS63229995A/ja
Publication of JPH0533880B2 publication Critical patent/JPH0533880B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Interface Circuits In Exchanges (AREA)
JP6240187A 1987-03-19 1987-03-19 二線−四線変換回路 Granted JPS63229995A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6240187A JPS63229995A (ja) 1987-03-19 1987-03-19 二線−四線変換回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6240187A JPS63229995A (ja) 1987-03-19 1987-03-19 二線−四線変換回路

Publications (2)

Publication Number Publication Date
JPS63229995A true JPS63229995A (ja) 1988-09-26
JPH0533880B2 JPH0533880B2 (cg-RX-API-DMAC7.html) 1993-05-20

Family

ID=13199076

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6240187A Granted JPS63229995A (ja) 1987-03-19 1987-03-19 二線−四線変換回路

Country Status (1)

Country Link
JP (1) JPS63229995A (cg-RX-API-DMAC7.html)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02246656A (ja) * 1989-03-20 1990-10-02 Toshiba Corp 電話システム
US5172411A (en) * 1990-03-27 1992-12-15 Siemens Aktiengesellschaft Two-wire/four-wire converter
US5175763A (en) * 1990-03-27 1992-12-29 Siemens Aktiengesellschaft Two-wire/four-wire converter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02246656A (ja) * 1989-03-20 1990-10-02 Toshiba Corp 電話システム
US5172411A (en) * 1990-03-27 1992-12-15 Siemens Aktiengesellschaft Two-wire/four-wire converter
US5175763A (en) * 1990-03-27 1992-12-29 Siemens Aktiengesellschaft Two-wire/four-wire converter

Also Published As

Publication number Publication date
JPH0533880B2 (cg-RX-API-DMAC7.html) 1993-05-20

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