JPS5978756U - current loop circuit - Google Patents

current loop circuit

Info

Publication number
JPS5978756U
JPS5978756U JP1982173703U JP17370382U JPS5978756U JP S5978756 U JPS5978756 U JP S5978756U JP 1982173703 U JP1982173703 U JP 1982173703U JP 17370382 U JP17370382 U JP 17370382U JP S5978756 U JPS5978756 U JP S5978756U
Authority
JP
Japan
Prior art keywords
loop circuit
current loop
transmission line
constant current
light emitting
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
JP1982173703U
Other languages
Japanese (ja)
Other versions
JPH0127311Y2 (en
Inventor
三井　博
Original Assignee
三洋電機株式会社
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 三洋電機株式会社 filed Critical 三洋電機株式会社
Priority to JP1982173703U priority Critical patent/JPS5978756U/en
Publication of JPS5978756U publication Critical patent/JPS5978756U/en
Application granted granted Critical
Publication of JPH0127311Y2 publication Critical patent/JPH0127311Y2/ja
Granted legal-status Critical Current

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  • Electronic Switches (AREA)
  • Dc Digital Transmission (AREA)
  • Optical Communication System (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

第１図、第２図は夫々従来回路を示す電気回路図、第３
図は本考案カレントループ回路の電気回路図であってＱ
はスイッチングトランジスタ、Ｔは伝送路、ＰＴはフォ
トカプラ、ＣＣは定電流回路、ＪＦジャンクションＦＥ
Ｔ、を夫々示している。Figures 1 and 2 are electrical circuit diagrams showing conventional circuits, respectively.
The figure is an electrical circuit diagram of the current loop circuit of the present invention.
is a switching transistor, T is a transmission line, PT is a photocoupler, CC is a constant current circuit, JF junction FE
T, respectively.

Claims (2)

【実用新案登録請求の範囲】[Scope of utility model registration request] （１）送信信号に応答して互に相補的にＯＮ、ＯＦＦ動
作する一対のスイッチング素子と、該各素子に伝送路を
経由して両端が接続された発光素子と、から成るカレン
トループ回路に於て、該発光素子の両端は夫々定電流素
子を介して伝送路に接続されると共に、該定電流素子の
各他端間に分流抵抗を連結した事を特徴とするカレント
ループ回路。(1) A current loop circuit consisting of a pair of switching elements that turn ON and OFF in a complementary manner to each other in response to a transmission signal, and a light emitting element whose both ends are connected to each element via a transmission line. A current loop circuit characterized in that both ends of the light emitting element are connected to a transmission line via constant current elements, and a shunt resistor is connected between each other end of the constant current element. （２）上記定電流素子はゲートを伝送路側に直結した電
界効果型トランジスタである事を特徴とした実用新案登
録請求の範囲第１項記載のカレントループ回路。(2) The current loop circuit according to claim 1, wherein the constant current element is a field effect transistor whose gate is directly connected to the transmission line side.
JP1982173703U 1982-11-16 1982-11-16 current loop circuit Granted JPS5978756U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1982173703U JPS5978756U (en) 1982-11-16 1982-11-16 current loop circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1982173703U JPS5978756U (en) 1982-11-16 1982-11-16 current loop circuit

Publications (2)

Publication Number Publication Date
JPS5978756U true JPS5978756U (en) 1984-05-28
JPH0127311Y2 JPH0127311Y2 (en) 1989-08-15

Family

ID=30378340

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1982173703U Granted JPS5978756U (en) 1982-11-16 1982-11-16 current loop circuit

Country Status (1)

Country Link
JP (1) JPS5978756U (en)

Also Published As

Publication number Publication date
JPH0127311Y2 (en) 1989-08-15

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