JPH0382956U - - Google Patents

Info

Publication number
JPH0382956U
JPH0382956U JP14247289U JP14247289U JPH0382956U JP H0382956 U JPH0382956 U JP H0382956U JP 14247289 U JP14247289 U JP 14247289U JP 14247289 U JP14247289 U JP 14247289U JP H0382956 U JPH0382956 U JP H0382956U
Authority
JP
Japan
Prior art keywords
amplifier
output
outputs
telephone line
polarity
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
JP14247289U
Other languages
Japanese (ja)
Other versions
JP2553861Y2 (en
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 JP1989142472U priority Critical patent/JP2553861Y2/en
Publication of JPH0382956U publication Critical patent/JPH0382956U/ja
Application granted granted Critical
Publication of JP2553861Y2 publication Critical patent/JP2553861Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Description

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

第１図は本考案の実施例に係る電話回線用セン
サユニツトの回路図、第２図は従来例に係る電話
回線用センサユニツトの回路図である。 ３，４……リレースイツチ、５……ライントラ
ンス、６……信号処理回路、１５，１６，２２…
…端子、１７……センサユニツト、１８……検出
コイル、１９……ホール素子（磁気センサ）、２
０，２３……差動増幅器、２１……比較器、ｅ１
，ｅ２……電話回線。 FIG. 1 is a circuit diagram of a telephone line sensor unit according to an embodiment of the present invention, and FIG. 2 is a circuit diagram of a conventional telephone line sensor unit. 3, 4... Relay switch, 5... Line transformer, 6... Signal processing circuit, 15, 16, 22...
...Terminal, 17...Sensor unit, 18...Detection coil, 19...Hall element (magnetic sensor), 2
0, 23...Differential amplifier, 21...Comparator, e1
, e2...Telephone line.

Claims (1)

【実用新案登録請求の範囲】 (1) 電話回線に対しリレースイツチを介して電
話機とフアクシミリ等の他の電子機器とを選択接
続させるように構成され、かつそのリレースイツ
チは電話回線を流れる回線電流を処理する当該電
子機器内の信号処理回路により駆動されて電話回
線を電話機側または電子機器側に切り換えて接続
するネツトワーク・コントロール・ユニツトに備
えられるものであつて、 前記電話回線に挿入されてそれに流れる回線電
流ならびに該回線電流の極性をそれぞれ磁気検出
する検出コイルと、 この検出コイルに誘起された磁気から前記回線
電流を検出しかつその極性に応じて異なる検出出
力を出力する磁気センサと、 この磁気センサの出力を増幅する増幅器と、 一方の極性の回線電流に対応した前記増幅器の
第１出力と、他方の極性の回線電流に対応した前
記増幅器の第２出力とをそれぞれ対応する基準値
と比較し、前記両出力それぞれの基準値に対する
大小比較の結果をそれぞれ出力する比較器と、 前記増幅器の出力を、前記信号処理回路に出力
する端子と、 を具備したことを特徴とする電話回線用センサユ
ニツト。 (2) 前記端子には、前記増幅器とは別の増幅器
で増幅された出力が与えられることを特徴とする
請求項(1)に記載の電話回線用センサユニツト。[Scope of Claim for Utility Model Registration] (1) It is configured to selectively connect a telephone set and other electronic equipment such as a facsimile to a telephone line via a relay switch, and the relay switch A network control unit that is driven by a signal processing circuit in the electronic device that processes the telephone line and switches and connects the telephone line to the telephone side or the electronic device side, and is inserted into the telephone line. a detection coil that magnetically detects the line current flowing therein and the polarity of the line current; a magnetic sensor that detects the line current from the magnetism induced in the detection coil and outputs different detection outputs depending on the polarity; An amplifier that amplifies the output of the magnetic sensor; a first output of the amplifier corresponding to a line current of one polarity; and a second output of the amplifier corresponding to a line current of the other polarity to respective reference values. A telephone line, comprising: a comparator that outputs the results of the magnitude comparison with respect to a reference value of each of the two outputs, and a terminal that outputs the output of the amplifier to the signal processing circuit. sensor unit for (2) The telephone line sensor unit according to claim 1, wherein the terminal is provided with an output amplified by an amplifier other than the amplifier.
JP1989142472U 1989-12-07 1989-12-07 Sensor unit for telephone line Expired - Lifetime JP2553861Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989142472U JP2553861Y2 (en) 1989-12-07 1989-12-07 Sensor unit for telephone line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989142472U JP2553861Y2 (en) 1989-12-07 1989-12-07 Sensor unit for telephone line

Publications (2)

Publication Number Publication Date
JPH0382956U true JPH0382956U (en) 1991-08-23
JP2553861Y2 JP2553861Y2 (en) 1997-11-12

Family

ID=31689297

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989142472U Expired - Lifetime JP2553861Y2 (en) 1989-12-07 1989-12-07 Sensor unit for telephone line

Country Status (1)

Country Link
JP (1) JP2553861Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009048001A (en) * 2007-08-21 2009-03-05 Chugoku Electric Power Co Inc:The Sheet body supporting structure

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59211371A (en) * 1983-05-16 1984-11-30 Fujitsu Ltd Circuit for detecting incoming call
JPS611959U (en) * 1984-06-07 1986-01-08 日本電気ホームエレクトロニクス株式会社 Telephone line connection terminal device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59211371A (en) * 1983-05-16 1984-11-30 Fujitsu Ltd Circuit for detecting incoming call
JPS611959U (en) * 1984-06-07 1986-01-08 日本電気ホームエレクトロニクス株式会社 Telephone line connection terminal device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009048001A (en) * 2007-08-21 2009-03-05 Chugoku Electric Power Co Inc:The Sheet body supporting structure

Also Published As

Publication number Publication date
JP2553861Y2 (en) 1997-11-12

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term