JPS63140744U - - Google Patents

Info

Publication number
JPS63140744U
JPS63140744U JP1987033036U JP3303687U JPS63140744U JP S63140744 U JPS63140744 U JP S63140744U JP 1987033036 U JP1987033036 U JP 1987033036U JP 3303687 U JP3303687 U JP 3303687U JP S63140744 U JPS63140744 U JP S63140744U
Authority
JP
Japan
Prior art keywords
contact
line side
terminals
holding relay
state
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
JP1987033036U
Other languages
Japanese (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 JP1987033036U priority Critical patent/JPS63140744U/ja
Publication of JPS63140744U publication Critical patent/JPS63140744U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Monitoring And Testing Of Transmission In General (AREA)
  • Monitoring And Testing Of Exchanges (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の第一実施例を示す回路図。第
２図は本考案の第二実施例を示す回路図。 Ａ１，Ａ２……駆動端子、Ａ１′，Ａ２′……
共通端子、Ｃ１，Ｃ２……コンデンサ、Ｄａ，Ｄ
ｂ……ダイオード、ｋａ１，ｋａ２……第一接点
、Ｋ，Ｋ′……保持リレー、ｋｂ１，ｋｂ２……
第二接点、Ｌ１，Ｌ２……線路側端子、Ｍａ，Ｍ
ｂ……電磁コイル、Ｒ……抵抗器、ＲＥ１……第
一リレー、ＲＥ２……第二リレー、Ｔ１，Ｔ２…
…装置側端子、ＴＣ……試験用回路。 FIG. 1 is a circuit diagram showing a first embodiment of the present invention. FIG. 2 is a circuit diagram showing a second embodiment of the present invention. A 1 , A 2 ... Drive terminals, A 1 ′, A 2 ′ ...
Common terminal, C 1 , C 2 ... Capacitor, Da, D
b...Diode, ka1 , ka2 ...First contact, K, K'...Holding relay, kb1 , kb2 ...
Second contact, L 1 , L 2 ... Line side terminal, Ma, M
b...Electromagnetic coil, R...Resistor, RE1 ...First relay, RE2 ...Second relay, T1 , T2 ...
...Equipment side terminal, TC...Test circuit.

Claims (1)

【実用新案登録請求の範囲】 一対の線路側端子Ｌ１，Ｌ２と、一対の装置側
端子Ｔ１，Ｔ２と、この線路側端子の間に試験用
ループ回路を閉成する手段とを備えた通信線路の
試験回路において、 駆動端子Ａ１，Ａ２に一方向の電流を印加する
ことにより第一接点を導通かつ第二接点を開放の
状態に転換させその電流の消滅後もその状態を保
持し、上記駆動端子に逆方向の電流を印加するこ
とより第二接点を導通かつ第一接点を開放の状態
に転換させその電流の消滅後もその状態を保持す
る保持リレーＫを備え、 上記線路側端子間に、上記保持リレーの駆動端
子（Ａ１，Ａ２）と、ガス入り放電管Ｖと、第一
のコンデンサＣ１との直列回路が接続され、 上記保持リレーの第一接点が上記線路側端子と
上記装置側端子との間に接続され、 上記保持リレーの第二接点と、第二のコンデン
サＣ２と、低抗器Ｒとの直列回路が上記線路側端
子間に接続された ことを特徹とする通信線路の試験回路。[Claims for Utility Model Registration] A pair of line side terminals L 1 and L 2 , a pair of device side terminals T 1 and T 2 , and means for closing a test loop circuit between the line side terminals. In a test circuit for a communication line equipped with the above, by applying a unidirectional current to the drive terminals A 1 and A 2 , the first contact becomes conductive and the second contact becomes open, and the state remains in that state even after the current disappears. and a holding relay K that applies a current in the opposite direction to the drive terminal to turn the second contact into a conductive state and the first contact into an open state, and maintain that state even after the current disappears, A series circuit consisting of drive terminals (A 1 , A 2 ) of the holding relay, a gas-filled discharge tube V, and a first capacitor C 1 is connected between the line side terminals, and a first contact of the holding relay is connected between the line side terminal and the device side terminal, and a series circuit of the second contact of the holding relay, the second capacitor C2 , and the low resistor R is connected between the line side terminal. A test circuit for communication lines that is specially designed to ensure that
JP1987033036U 1987-03-05 1987-03-05 Pending JPS63140744U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987033036U JPS63140744U (en) 1987-03-05 1987-03-05

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987033036U JPS63140744U (en) 1987-03-05 1987-03-05

Publications (1)

Publication Number Publication Date
JPS63140744U true JPS63140744U (en) 1988-09-16

Family

ID=30840270

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987033036U Pending JPS63140744U (en) 1987-03-05 1987-03-05

Country Status (1)

Country Link
JP (1) JPS63140744U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02174354A (en) * 1988-12-27 1990-07-05 Nippon Telegr & Teleph Corp <Ntt> Remote disconnection device
JPH03226155A (en) * 1990-01-31 1991-10-07 Nippon Telegr & Teleph Corp <Ntt> Bracketing controller
US9327347B2 (en) 2008-03-05 2016-05-03 Southwire Company, Llc Niobium as a protective barrier in molten metals
US9382598B2 (en) 2010-04-09 2016-07-05 Southwire Company, Llc Ultrasonic device with integrated gas delivery system
US9528167B2 (en) 2013-11-18 2016-12-27 Southwire Company, Llc Ultrasonic probes with gas outlets for degassing of molten metals

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02174354A (en) * 1988-12-27 1990-07-05 Nippon Telegr & Teleph Corp <Ntt> Remote disconnection device
JPH03226155A (en) * 1990-01-31 1991-10-07 Nippon Telegr & Teleph Corp <Ntt> Bracketing controller
US9327347B2 (en) 2008-03-05 2016-05-03 Southwire Company, Llc Niobium as a protective barrier in molten metals
US9382598B2 (en) 2010-04-09 2016-07-05 Southwire Company, Llc Ultrasonic device with integrated gas delivery system
US9528167B2 (en) 2013-11-18 2016-12-27 Southwire Company, Llc Ultrasonic probes with gas outlets for degassing of molten metals

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