JPH0357616U - - Google Patents

Info

Publication number
JPH0357616U
JPH0357616U JP11831689U JP11831689U JPH0357616U JP H0357616 U JPH0357616 U JP H0357616U JP 11831689 U JP11831689 U JP 11831689U JP 11831689 U JP11831689 U JP 11831689U JP H0357616 U JPH0357616 U JP H0357616U
Authority
JP
Japan
Prior art keywords
operational amplifier
circuit
output
buffer
buffer circuit
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
JP11831689U
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 JP11831689U priority Critical patent/JPH0357616U/ja
Publication of JPH0357616U publication Critical patent/JPH0357616U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Measuring Magnetic Variables (AREA)

Description

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

第１図は本考案の一実施例を示す接続図、第２
図及び第３図はその動作の説明に供する接続図、
第４図は実施例の演算増幅回路の集積回路化例を
示す接続図、第５図及び第６図は従来の演算増幅
回路を示す接続図である。 １，２０……演算増幅回路、２……演算増幅器
、３……負帰還回路、２１，２２……バツフア回
路、Ｒ１……入力インピーダンス素子、Ｒ２，Ｃ
１……帰還インピーダンス素子、ＶＩＮ……入力
電圧、ＶＯＵＴ２０……出力電圧。 Fig. 1 is a connection diagram showing one embodiment of the present invention;
3 and 3 are connection diagrams for explaining the operation,
FIG. 4 is a connection diagram showing an example of an integrated circuit of the operational amplifier circuit according to the embodiment, and FIGS. 5 and 6 are connection diagrams showing conventional operational amplifier circuits. 1, 20... operational amplifier circuit, 2... operational amplifier, 3... negative feedback circuit, 21, 22... buffer circuit, R1... input impedance element, R2, C
1... Feedback impedance element, VIN... Input voltage, VOUT 20 ... Output voltage.

Claims (1)

【実用新案登録請求の範囲】 非反転入力端に基準電圧が入力されると共に、
反転入力端に入力インピーダンス素子を介して、
入力電圧が入力される演算増幅器と、 上記演算増幅器の出力を送出する第１のバツフ
ア回路と、 少なくとも２個以上のインピーダンス素子が直
列接続されてなり、上記第１のバツフア回路の出
力を、上記演算増幅器の上記反転入力端に帰還す
る負帰還回路と、 上記演算増幅器の出力をスイツチ素子を介して
、上記負帰還回路の所定の上記インピーダンス素
子間に供給する少なくとも１個以上の第２のバツ
フア回路と を具え、上記第２のバツフア回路の上記スイツ
チ素子をオンオフ制御して利得を可変するように
した ことを特徴とする演算増幅回路。[Claims for Utility Model Registration] When a reference voltage is input to the non-inverting input terminal,
Through the input impedance element to the inverting input terminal,
An operational amplifier to which an input voltage is input, a first buffer circuit to send out the output of the operational amplifier, and at least two or more impedance elements are connected in series, and the output of the first buffer circuit is connected to the first buffer circuit. a negative feedback circuit that feeds back to the inverting input terminal of the operational amplifier; and at least one second buffer that supplies the output of the operational amplifier between predetermined impedance elements of the negative feedback circuit via a switch element. An operational amplifier circuit comprising: a circuit, wherein the switch element of the second buffer circuit is controlled on and off to vary the gain.
JP11831689U 1989-10-11 1989-10-11 Pending JPH0357616U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11831689U JPH0357616U (en) 1989-10-11 1989-10-11

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11831689U JPH0357616U (en) 1989-10-11 1989-10-11

Publications (1)

Publication Number Publication Date
JPH0357616U true JPH0357616U (en) 1991-06-04

Family

ID=31666490

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11831689U Pending JPH0357616U (en) 1989-10-11 1989-10-11

Country Status (1)

Country Link
JP (1) JPH0357616U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010179589A (en) * 2009-02-06 2010-08-19 Zebra Pen Corp Writing utensil
JP2011046203A (en) * 2010-11-04 2011-03-10 Zebra Pen Corp Writing utensil

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5455464A (en) * 1977-10-12 1979-05-02 Shin Nippon Sokki Kk Steel plate detector
JPS609722U (en) * 1983-06-30 1985-01-23 マツダ株式会社 air outlet duct

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5455464A (en) * 1977-10-12 1979-05-02 Shin Nippon Sokki Kk Steel plate detector
JPS609722U (en) * 1983-06-30 1985-01-23 マツダ株式会社 air outlet duct

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010179589A (en) * 2009-02-06 2010-08-19 Zebra Pen Corp Writing utensil
JP4649517B2 (en) * 2009-02-06 2011-03-09 ゼブラ株式会社 Writing instrument
JP2011046203A (en) * 2010-11-04 2011-03-10 Zebra Pen Corp Writing utensil

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