JPS601016U - Isolation amplifier circuit - Google Patents

Isolation amplifier circuit

Info

Publication number
JPS601016U
JPS601016U JP7045384U JP7045384U JPS601016U JP S601016 U JPS601016 U JP S601016U JP 7045384 U JP7045384 U JP 7045384U JP 7045384 U JP7045384 U JP 7045384U JP S601016 U JPS601016 U JP S601016U
Authority
JP
Japan
Prior art keywords
operational amplifier
input terminal
output
amplifier circuit
isolation amplifier
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
JP7045384U
Other languages
Japanese (ja)
Other versions
JPS6238330Y2 (en
Inventor
白石　理
及川　義則
Original Assignee
沖電気工業株式会社
日本電信電話株式会社
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 沖電気工業株式会社, 日本電信電話株式会社 filed Critical 沖電気工業株式会社
Priority to JP7045384U priority Critical patent/JPS601016U/en
Publication of JPS601016U publication Critical patent/JPS601016U/en
Application granted granted Critical
Publication of JPS6238330Y2 publication Critical patent/JPS6238330Y2/ja
Granted legal-status Critical Current

Links

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 drawings]

第１図は従来のバイアス電源を使用したアイソレーショ
ン増幅回路を示す図、第２図は本考案アイソレーション
増幅回路の一実施例を示す図である。 ＯＰｏ・・・・・・第１の演算増幅器、ＯＰｌ・・・・
・・第２の演算増幅器、Ｒｏ、　Ｒ１，Ｒ２，Ｒ３・・
・・・・抵抗、ｃｏ・・・・・・コンデンサ、ＰＣ・・
・・・・フォトカプラ、Ｅｌ、　Ｅ２．　Ｅ、・・・・
・・電源。FIG. 1 is a diagram showing an isolation amplifier circuit using a conventional bias power supply, and FIG. 2 is a diagram showing an embodiment of the isolation amplifier circuit of the present invention. OPo...First operational amplifier, OPl...
...Second operational amplifier, Ro, R1, R2, R3...
...Resistance, CO...Capacitor, PC...
...Photocoupler, El, E2. E...
··power supply.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 第１の演算増幅器の出力に、１個又は２個のフォトカプ
ラの発光素子、抵抗、電源を直列に接続し、第１の受光
素子に流れる電流が第１の演算増幅器の正入力端子へ負
帰還を行い、第２の受光素子が第２の演算増幅器に信号
を伝達するアイソレーション増幅回路において、第１の
演算増幅器の出力と、同じくその負入力端子を抵抗で接
続し、且つ負入力端子をコンデンサでアースして１個又
は２個のフォトカプラの発光素子に直流電流を重畳して
交流信号を伝達することを特徴とするアイソレーション
増幅回路。A light emitting element of one or two photocouplers, a resistor, and a power supply are connected in series to the output of the first operational amplifier, and the current flowing through the first light receiving element is negative to the positive input terminal of the first operational amplifier. In an isolation amplifier circuit in which feedback is performed and a second light receiving element transmits a signal to a second operational amplifier, the output of the first operational amplifier and its negative input terminal are connected via a resistor, and the negative input terminal is connected to the output of the first operational amplifier. An isolation amplification circuit characterized in that an AC signal is transmitted by grounding with a capacitor and superimposing a DC current on one or two photocoupler light emitting elements.
JP7045384U 1984-05-16 1984-05-16 Isolation amplifier circuit Granted JPS601016U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7045384U JPS601016U (en) 1984-05-16 1984-05-16 Isolation amplifier circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7045384U JPS601016U (en) 1984-05-16 1984-05-16 Isolation amplifier circuit

Publications (2)

Publication Number Publication Date
JPS601016U true JPS601016U (en) 1985-01-07
JPS6238330Y2 JPS6238330Y2 (en) 1987-09-30

Family

ID=30200601

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7045384U Granted JPS601016U (en) 1984-05-16 1984-05-16 Isolation amplifier circuit

Country Status (1)

Country Link
JP (1) JPS601016U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08256027A (en) * 1995-01-13 1996-10-01 Tektronix Inc Device and method for amplifying and insulating separative route

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08256027A (en) * 1995-01-13 1996-10-01 Tektronix Inc Device and method for amplifying and insulating separative route

Also Published As

Publication number Publication date
JPS6238330Y2 (en) 1987-09-30

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