JPS58116849A - 電話機のインタフエ−ス回路 - Google Patents

電話機のインタフエ−ス回路

Info

Publication number
JPS58116849A
JPS58116849A JP21429781A JP21429781A JPS58116849A JP S58116849 A JPS58116849 A JP S58116849A JP 21429781 A JP21429781 A JP 21429781A JP 21429781 A JP21429781 A JP 21429781A JP S58116849 A JPS58116849 A JP S58116849A
Authority
JP
Japan
Prior art keywords
circuit
transistor
diode bridge
collector
base
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
JP21429781A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0137893B2 (enExample
Inventor
Yasunobu Nakayama
中山　恭伸
Taiji Sato
泰治 佐藤
Kyoichi Nakakawara
中河原　喬一
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP21429781A priority Critical patent/JPS58116849A/ja
Publication of JPS58116849A publication Critical patent/JPS58116849A/ja
Publication of JPH0137893B2 publication Critical patent/JPH0137893B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/08—Current supply arrangements for telephone systems with current supply sources at the substations

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
JP21429781A 1981-12-29 1981-12-29 電話機のインタフエ−ス回路 Granted JPS58116849A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21429781A JPS58116849A (ja) 1981-12-29 1981-12-29 電話機のインタフエ−ス回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21429781A JPS58116849A (ja) 1981-12-29 1981-12-29 電話機のインタフエ−ス回路

Publications (2)

Publication Number Publication Date
JPS58116849A true JPS58116849A (ja) 1983-07-12
JPH0137893B2 JPH0137893B2 (enExample) 1989-08-10

Family

ID=16653393

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21429781A Granted JPS58116849A (ja) 1981-12-29 1981-12-29 電話機のインタフエ−ス回路

Country Status (1)

Country Link
JP (1) JPS58116849A (enExample)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60186743U (ja) * 1984-05-21 1985-12-11 株式会社田村電機製作所 線路結合回路
JPS6123453A (ja) * 1984-07-11 1986-01-31 Matsushita Electric Ind Co Ltd 局線とのインタ−フエ−ス回路
JPH0332851U (enExample) * 1989-08-08 1991-03-29
US5478292A (en) * 1991-08-27 1995-12-26 Kabushiki Kaisha Komatsu Seisakusho Epicycloidal gear type speed change gear system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60186743U (ja) * 1984-05-21 1985-12-11 株式会社田村電機製作所 線路結合回路
JPS6123453A (ja) * 1984-07-11 1986-01-31 Matsushita Electric Ind Co Ltd 局線とのインタ−フエ−ス回路
JPH0332851U (enExample) * 1989-08-08 1991-03-29
US5478292A (en) * 1991-08-27 1995-12-26 Kabushiki Kaisha Komatsu Seisakusho Epicycloidal gear type speed change gear system

Also Published As

Publication number Publication date
JPH0137893B2 (enExample) 1989-08-10

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