JPS5944159A - 電話機のサ−ジ防護回路 - Google Patents

電話機のサ−ジ防護回路

Info

Publication number
JPS5944159A
JPS5944159A JP15461482A JP15461482A JPS5944159A JP S5944159 A JPS5944159 A JP S5944159A JP 15461482 A JP15461482 A JP 15461482A JP 15461482 A JP15461482 A JP 15461482A JP S5944159 A JPS5944159 A JP S5944159A
Authority
JP
Japan
Prior art keywords
surge
telephone
current
switch
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
JP15461482A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6253981B2 (enrdf_load_stackoverflow
Inventor
Yutaka Nishino
豊 西野
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 JP15461482A priority Critical patent/JPS5944159A/ja
Publication of JPS5944159A publication Critical patent/JPS5944159A/ja
Publication of JPS6253981B2 publication Critical patent/JPS6253981B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/738—Interface circuits for coupling substations to external telephone lines
    • H04M1/74—Interface circuits for coupling substations to external telephone lines with means for reducing interference; with means for reducing effects due to line faults

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Protection Of Static Devices (AREA)
JP15461482A 1982-09-07 1982-09-07 電話機のサ−ジ防護回路 Granted JPS5944159A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15461482A JPS5944159A (ja) 1982-09-07 1982-09-07 電話機のサ−ジ防護回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15461482A JPS5944159A (ja) 1982-09-07 1982-09-07 電話機のサ−ジ防護回路

Publications (2)

Publication Number Publication Date
JPS5944159A true JPS5944159A (ja) 1984-03-12
JPS6253981B2 JPS6253981B2 (enrdf_load_stackoverflow) 1987-11-12

Family

ID=15588031

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15461482A Granted JPS5944159A (ja) 1982-09-07 1982-09-07 電話機のサ−ジ防護回路

Country Status (1)

Country Link
JP (1) JPS5944159A (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61154793A (ja) * 1984-12-27 1986-07-14 Kobe Steel Ltd Ｔｉｇ溶接用溶加材
JPH02192894A (ja) * 1989-01-20 1990-07-30 Nippon Steel Corp 耐火鋼用ガスシールドアーク溶接用フラックス入りワイヤ
JPH03291192A (ja) * 1990-04-04 1991-12-20 Nippon Steel Corp ガスシールドアーク溶接用フラックス入りワイヤ
JPH0647581A (ja) * 1992-06-22 1994-02-22 Lincoln Electric Co:The 煙霧の減少したコア付き電極
JPH06210491A (ja) * 1992-11-16 1994-08-02 Lincoln Electric Co:The フラックスコアガス遮蔽電極
JPH0795773B2 (ja) * 1985-07-18 1995-10-11 アルカテル・エヌ・ブイ 電話機ラインスイッチ
US6479796B2 (en) 2000-05-01 2002-11-12 Kobe Steel, Ltd. Flux-cored wire for gas-shielded arc welding of heat resisting steel

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6411592U (enrdf_load_stackoverflow) * 1987-07-08 1989-01-20
JPS6426140U (enrdf_load_stackoverflow) * 1987-08-07 1989-02-14
JPH0311637U (enrdf_load_stackoverflow) * 1989-06-20 1991-02-05

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61154793A (ja) * 1984-12-27 1986-07-14 Kobe Steel Ltd Ｔｉｇ溶接用溶加材
JPH0795773B2 (ja) * 1985-07-18 1995-10-11 アルカテル・エヌ・ブイ 電話機ラインスイッチ
JPH02192894A (ja) * 1989-01-20 1990-07-30 Nippon Steel Corp 耐火鋼用ガスシールドアーク溶接用フラックス入りワイヤ
JPH03291192A (ja) * 1990-04-04 1991-12-20 Nippon Steel Corp ガスシールドアーク溶接用フラックス入りワイヤ
JPH0647581A (ja) * 1992-06-22 1994-02-22 Lincoln Electric Co:The 煙霧の減少したコア付き電極
JPH06210491A (ja) * 1992-11-16 1994-08-02 Lincoln Electric Co:The フラックスコアガス遮蔽電極
US6479796B2 (en) 2000-05-01 2002-11-12 Kobe Steel, Ltd. Flux-cored wire for gas-shielded arc welding of heat resisting steel

Also Published As

Publication number Publication date
JPS6253981B2 (enrdf_load_stackoverflow) 1987-11-12

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