JPS59106214U - Logarithmic amplifier drift compensation circuit - Google Patents

Logarithmic amplifier drift compensation circuit

Info

Publication number
JPS59106214U
JPS59106214U JP19710782U JP19710782U JPS59106214U JP S59106214 U JPS59106214 U JP S59106214U JP 19710782 U JP19710782 U JP 19710782U JP 19710782 U JP19710782 U JP 19710782U JP S59106214 U JPS59106214 U JP S59106214U
Authority
JP
Japan
Prior art keywords
logarithmic amplifier
drift compensation
compensation circuit
input
operational 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.)
Pending
Application number
JP19710782U
Other languages
Japanese (ja)
Inventor
澤口　睦夫
上田　芳夫
Original Assignee
富士電機株式会社
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 富士電機株式会社 filed Critical 富士電機株式会社
Priority to JP19710782U priority Critical patent/JPS59106214U/en
Publication of JPS59106214U publication Critical patent/JPS59106214U/en
Pending legal-status Critical Current

Links

Landscapes

  • Amplifiers (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図は従来の対数増幅器の概略構成図、第２図は本考
案の一実施例の概略構成図、第３図は第２図のタイミン
グスケジュールである。 ３：対数増幅器、４ニドリフト補償回路、５：演算増幅
器、６：積分回路。FIG. 1 is a schematic diagram of a conventional logarithmic amplifier, FIG. 2 is a schematic diagram of an embodiment of the present invention, and FIG. 3 is a timing schedule of FIG. 3: logarithmic amplifier, 4: drift compensation circuit, 5: operational amplifier, 6: integrating circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 入力信号および基準電圧を繰返し周期的に切換えるスイ
ッチと、前記スイッチにより前記入力信号が入力されこ
の入力信号に関係した出力をする対数増幅器と、前記対
数増幅器の出力側に接続される演算増幅器と、この演算
増幅器の出力側に接続され前記スイッチの切換により前
記基準電圧が前記対数増幅器に入力された際の前記演算
増幅器の出力を前記演算増幅器の入力側に負帰還して、
ドリフト補償する積分回路とを備えたことを特徴とする
対数増幅器のドリフト補償回路。a switch that repeatedly and periodically switches an input signal and a reference voltage; a logarithmic amplifier to which the input signal is input by the switch and outputs an output related to the input signal; and an operational amplifier connected to the output side of the logarithmic amplifier; Negatively feeding back the output of the operational amplifier when the reference voltage is input to the logarithmic amplifier by switching the switch connected to the output side of the operational amplifier, to the input side of the operational amplifier;
1. A logarithmic amplifier drift compensation circuit, comprising: an integrator circuit for drift compensation.
JP19710782U 1982-12-31 1982-12-31 Logarithmic amplifier drift compensation circuit Pending JPS59106214U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19710782U JPS59106214U (en) 1982-12-31 1982-12-31 Logarithmic amplifier drift compensation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19710782U JPS59106214U (en) 1982-12-31 1982-12-31 Logarithmic amplifier drift compensation circuit

Publications (1)

Publication Number Publication Date
JPS59106214U true JPS59106214U (en) 1984-07-17

Family

ID=30422444

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19710782U Pending JPS59106214U (en) 1982-12-31 1982-12-31 Logarithmic amplifier drift compensation circuit

Country Status (1)

Country Link
JP (1) JPS59106214U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05183347A (en) * 1991-12-28 1993-07-23 Nec Corp Signal processing circuit for semiconductor sensor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05183347A (en) * 1991-12-28 1993-07-23 Nec Corp Signal processing circuit for semiconductor sensor

Similar Documents

Publication Publication Date Title
JPS59106214U (en) Logarithmic amplifier drift compensation circuit
JPS58191715U (en) isolated amplifier
JPS5982881U (en) Drift correction circuit
JPS58176424U (en) switch capacitor circuit
JPS5956572U (en) current detection device
JPS58186608U (en) oscillation circuit
JPS58123393U (en) electronic time switch
JPS58141667U (en) antenna switching circuit
JPS58184930U (en) Transistor switching circuit
JPS5837212U (en) Muting circuit
JPS58179849U (en) Automatic power cut-off device
JPS58138413U (en) Voltage/current control circuit
JPS58184966U (en) Video and audio switching control device
JPS58101445U (en) Light receiving circuit
JPS58194515U (en) oscillation circuit
JPS58116340U (en) miller integrator
JPS5927632U (en) A/D converter
JPS60166134U (en) Slider Tsuk
JPS5861522U (en) amplifier circuit
JPS5933311U (en) AM detection circuit
JPS59181950U (en) Control circuit for combustion equipment
JPS61103969U (en)
JPS6027512U (en) amplifier power supply
JPS58109792U (en) audio signal delay device
JPS6076413U (en) Oscillation circuit output control circuit