JPH0464774U - - Google Patents

Info

Publication number
JPH0464774U
JPH0464774U JP10688390U JP10688390U JPH0464774U JP H0464774 U JPH0464774 U JP H0464774U JP 10688390 U JP10688390 U JP 10688390U JP 10688390 U JP10688390 U JP 10688390U JP H0464774 U JPH0464774 U JP H0464774U
Authority
JP
Japan
Prior art keywords
input current
reference resistor
shift
level shift
input
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
JP10688390U
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 JP10688390U priority Critical patent/JPH0464774U/ja
Publication of JPH0464774U publication Critical patent/JPH0464774U/ja
Pending legal-status Critical Current

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  • Measurement Of Current Or Voltage (AREA)
  • Amplifiers (AREA)

Description

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

第１図は本考案の電流変換回路の一実施例を示
す回路図、第２図は本考案の他の実施例を示す回
路図、第３図は従来の電流変換回路の一例を示す
回路図である。 １……基準抵抗、２……演算増幅器、３……レ
ベルシフト用の基準電圧源、４，５，８……抵抗
、６……ダイオード、７，７ａ……レベルシフト
回路。 Fig. 1 is a circuit diagram showing one embodiment of the current conversion circuit of the present invention, Fig. 2 is a circuit diagram showing another embodiment of the invention, and Fig. 3 is a circuit diagram showing an example of a conventional current conversion circuit. It is. DESCRIPTION OF SYMBOLS 1... Reference resistor, 2... Operational amplifier, 3... Reference voltage source for level shift, 4, 5, 8... Resistor, 6... Diode, 7, 7a... Level shift circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 入力電流値をそれに対応した電圧値に変換する
基準抵抗と、この基準抵抗を通して流れる入力電
流を演算増幅器の反転入力端子に入力し、その非
反転入力端子に基準電圧源よりレベルシフト電圧
を付与して、該演算増幅器の出力端子と前記基準
抵抗の一端との間に逆向きにダイオードを挿入し
てなるレベルシフト回路を有し、前記レベルシフ
ト回路は、入力電流が有る時そのシフト電位を一
定値に保ち、入力電流が零の時はシフト電位を大
きく変化させるようにしたことを特徴とする電流
変換回路。 A reference resistor that converts the input current value into a corresponding voltage value, and the input current flowing through this reference resistor are input to the inverting input terminal of the operational amplifier, and a level shift voltage is applied to the non-inverting input terminal from the reference voltage source. The level shift circuit includes a diode inserted in the opposite direction between the output terminal of the operational amplifier and one end of the reference resistor, and the level shift circuit maintains a constant shift potential when there is an input current. A current conversion circuit characterized in that the shift potential is maintained at a constant value and the shift potential is greatly changed when the input current is zero.
JP10688390U 1990-10-15 1990-10-15 Pending JPH0464774U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10688390U JPH0464774U (en) 1990-10-15 1990-10-15

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10688390U JPH0464774U (en) 1990-10-15 1990-10-15

Publications (1)

Publication Number Publication Date
JPH0464774U true JPH0464774U (en) 1992-06-03

Family

ID=31853161

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10688390U Pending JPH0464774U (en) 1990-10-15 1990-10-15

Country Status (1)

Country Link
JP (1) JPH0464774U (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5821208A (en) * 1981-07-30 1983-02-08 Sumitomo Electric Ind Ltd Production of image fiber

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5821208A (en) * 1981-07-30 1983-02-08 Sumitomo Electric Ind Ltd Production of image fiber

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