JPS5644965A - Integrator - Google Patents
IntegratorInfo
- 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
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
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) |
-
1979
- 1979-09-19 JP JP12047579A patent/JPS5644965A/en active Pending
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