JPH0159878U - - Google Patents

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Publication number
JPH0159878U
JPH0159878U JP15434287U JP15434287U JPH0159878U JP H0159878 U JPH0159878 U JP H0159878U JP 15434287 U JP15434287 U JP 15434287U JP 15434287 U JP15434287 U JP 15434287U JP H0159878 U JPH0159878 U JP H0159878U
Authority
JP
Japan
Prior art keywords
telephone line
line
occurs
voltage
accident
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
JP15434287U
Other languages
English (en)
Other versions
JPH0611505Y2 (ja
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 filed Critical
Priority to JP1987154342U priority Critical patent/JPH0611505Y2/ja
Publication of JPH0159878U publication Critical patent/JPH0159878U/ja
Application granted granted Critical
Publication of JPH0611505Y2 publication Critical patent/JPH0611505Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【図面の簡単な説明】
第1図は本考案に係る装置の一実施例の接続図
、第2図は第1図装置を説明する為の図、第3図
は第2図装置の動作を説明する為の図、第4図は
従来のこの種の装置の作用を説明する為の図であ
る。 DS……探査装置、L……電話用電線路、Es
……基準電圧源、CG……比較積分器、g……事
故点、G……接地点、A/D……アナログ・デイ
ジタル変換器、P……表示器、SA……差電圧検
出回路、ZA1,ZA2……ゼロコンパレータ、
DA……微分回路、LED……発光ダイオード。

Claims (1)

    【実用新案登録請求の範囲】
  1. 電話用電線路に生じた事故点を、この電話用電
    線路に比較積分器を通して基準電圧を印加するこ
    とにより生じる地絡点までの電圧降下と前記電話
    用電線路全体に生じる電圧降下との比として求め
    るように構成した事故探査装置にして、前記基準
    電圧と線路印加電圧との差が一定範囲内になると
    発光する発光素子よりなるバランス状態検出回路
    を設けたことを特徴とする電線路の事故探査装置
JP1987154342U 1987-10-08 1987-10-08 電線路の事故探査装置 Expired - Lifetime JPH0611505Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987154342U JPH0611505Y2 (ja) 1987-10-08 1987-10-08 電線路の事故探査装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987154342U JPH0611505Y2 (ja) 1987-10-08 1987-10-08 電線路の事故探査装置

Publications (2)

Publication Number Publication Date
JPH0159878U true JPH0159878U (ja) 1989-04-14
JPH0611505Y2 JPH0611505Y2 (ja) 1994-03-23

Family

ID=31430987

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987154342U Expired - Lifetime JPH0611505Y2 (ja) 1987-10-08 1987-10-08 電線路の事故探査装置

Country Status (1)

Country Link
JP (1) JPH0611505Y2 (ja)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5223574U (ja) * 1975-08-05 1977-02-18
JPS5267780A (en) * 1975-12-04 1977-06-04 Sankosha Co Ltd Method of detecting damaged cable

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5223574U (ja) * 1975-08-05 1977-02-18
JPS5267780A (en) * 1975-12-04 1977-06-04 Sankosha Co Ltd Method of detecting damaged cable

Also Published As

Publication number Publication date
JPH0611505Y2 (ja) 1994-03-23

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