JPS5644965A - Integrator - Google Patents

Integrator

Info

Publication number
JPS5644965A
JPS5644965A JP12047579A JP12047579A JPS5644965A JP S5644965 A JPS5644965 A JP S5644965A JP 12047579 A JP12047579 A JP 12047579A JP 12047579 A JP12047579 A JP 12047579A JP S5644965 A JPS5644965 A JP S5644965A
Authority
JP
Japan
Prior art keywords
capacitor
integration
operational amplifier
raised
feedback 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
JP12047579A
Other languages
Japanese (ja)
Inventor
Kazushi Kobayashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shimadzu Corp
Original Assignee
Shimadzu Corp
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 Shimadzu Corp filed Critical Shimadzu Corp
Priority to JP12047579A priority Critical patent/JPS5644965A/en
Publication of JPS5644965A publication Critical patent/JPS5644965A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To extend the integration time constant several-ten times, by inserting a variable gain amplifier in series to the capacitor in the integrator where the capacitor is inserted into the feedback circuit of the operational amplifier.
CONSTITUTION: Input signal ei is applied to the inversion input terminal of operational amplifier A1 of a very high gain through resistance R for integration, and output eo is fed back negatively to the inversion input terminal through capacitor C for integration as a feedback circuit of operational amplifier A1, thus constituting an integrator. Here, the feedback circuit is constituted by connecting variable gain amplifier VGA in series to integration capacitor C, and the output of operational amplifier A1 is raised K times through VGA and is fed back through integration capacitor C. Therefore, the current flowed to capacitor C is raised K times, and capacitor C is raised K times equivalently, and then, the integration time constant is extended K times.
COPYRIGHT: (C)1981,JPO&Japio
JP12047579A 1979-09-19 1979-09-19 Integrator Pending JPS5644965A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12047579A JPS5644965A (en) 1979-09-19 1979-09-19 Integrator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12047579A JPS5644965A (en) 1979-09-19 1979-09-19 Integrator

Publications (1)

Publication Number Publication Date
JPS5644965A true JPS5644965A (en) 1981-04-24

Family

ID=14787087

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12047579A Pending JPS5644965A (en) 1979-09-19 1979-09-19 Integrator

Country Status (1)

Country Link
JP (1) JPS5644965A (en)

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