JPS59114619U - Amplifier circuit with variable gain function - Google Patents

Amplifier circuit with variable gain function

Info

Publication number
JPS59114619U
JPS59114619U JP565183U JP565183U JPS59114619U JP S59114619 U JPS59114619 U JP S59114619U JP 565183 U JP565183 U JP 565183U JP 565183 U JP565183 U JP 565183U JP S59114619 U JPS59114619 U JP S59114619U
Authority
JP
Japan
Prior art keywords
amplifier
gain
variable gain
amplifier circuit
gain function
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
JP565183U
Other languages
Japanese (ja)
Other versions
JPH024507Y2 (en
Inventor
小川　規
宇野　英明
Original Assignee
横河電機株式会社
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 横河電機株式会社 filed Critical 横河電機株式会社
Priority to JP565183U priority Critical patent/JPS59114619U/en
Publication of JPS59114619U publication Critical patent/JPS59114619U/en
Application granted granted Critical
Publication of JPH024507Y2 publication Critical patent/JPH024507Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Control Of Amplification And Gain Control (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (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 drawings]

第１図は本考案に係るゲイン可変機能付増幅回路の１構
成例を示す図、第２図は第１図回路の各レンジにおける
周波数−利得特性の１例を示す図である。 Ａ、　Ｂ・・・増幅器、８１〜Ｓ３・・・スイッチ、Ｒ
１，Ｒ２・・・抵抗、１・・・比較回路、３・・・レン
ジ制御回路、５・・・帰還量制御回路。FIG. 1 is a diagram showing an example of the configuration of an amplifier circuit with a variable gain function according to the present invention, and FIG. 2 is a diagram showing an example of frequency-gain characteristics in each range of the circuit shown in FIG. A, B...Amplifier, 81-S3...Switch, R
1, R2...Resistor, 1...Comparison circuit, 3...Range control circuit, 5...Feedback amount control circuit.

Claims (1)

【実用新案登録請求の範囲】 入力信号を増幅する第１の増幅器と、この第１の増幅器
によるゲインを可変する帰還量制御回路と、入力信号の
レベルを検出しこのレベルに基づいてレンジ選択信号を
出力する手段とを備えた回路において、 前記第１の増幅器の出力段へスイッチを介して第２の増
幅器を設け、高ゲインのレンジではこの第２の増幅器部
のゲインが第１の増幅器によるゲインに加算されるよう
に前記スイッチを動作させるようにしたゲイン可変機能
付増幅回路。[Claims for Utility Model Registration] A first amplifier that amplifies an input signal, a feedback amount control circuit that varies the gain of the first amplifier, and a range selection signal that detects the level of the input signal and generates a range selection signal based on this level. A second amplifier is provided to the output stage of the first amplifier via a switch, and in a high gain range, the gain of the second amplifier section is equal to that of the first amplifier. An amplifier circuit with a variable gain function, wherein the switch is operated so that the gain is added to the gain.
JP565183U 1983-01-19 1983-01-19 Amplifier circuit with variable gain function Granted JPS59114619U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP565183U JPS59114619U (en) 1983-01-19 1983-01-19 Amplifier circuit with variable gain function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP565183U JPS59114619U (en) 1983-01-19 1983-01-19 Amplifier circuit with variable gain function

Publications (2)

Publication Number Publication Date
JPS59114619U true JPS59114619U (en) 1984-08-02
JPH024507Y2 JPH024507Y2 (en) 1990-02-02

Family

ID=30137240

Family Applications (1)

Application Number Title Priority Date Filing Date
JP565183U Granted JPS59114619U (en) 1983-01-19 1983-01-19 Amplifier circuit with variable gain function

Country Status (1)

Country Link
JP (1) JPS59114619U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011169833A (en) * 2010-02-19 2011-09-01 Stanley Electric Co Ltd Current sensor
JP2020122667A (en) * 2019-01-29 2020-08-13 株式会社東芝 Protection control device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4940460A (en) * 1972-08-22 1974-04-16

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4940460A (en) * 1972-08-22 1974-04-16

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011169833A (en) * 2010-02-19 2011-09-01 Stanley Electric Co Ltd Current sensor
JP2020122667A (en) * 2019-01-29 2020-08-13 株式会社東芝 Protection control device

Also Published As

Publication number Publication date
JPH024507Y2 (en) 1990-02-02

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