JPS5482948A - Functional amplifier - Google Patents
Functional amplifierInfo
- Publication number
- JPS5482948A JPS5482948A JP15087277A JP15087277A JPS5482948A JP S5482948 A JPS5482948 A JP S5482948A JP 15087277 A JP15087277 A JP 15087277A JP 15087277 A JP15087277 A JP 15087277A JP S5482948 A JPS5482948 A JP S5482948A
- Authority
- JP
- Japan
- Prior art keywords
- amplifier
- output
- amplification factor
- variable
- amplifiers
- 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
Links
Landscapes
- Control Of Amplification And Gain Control (AREA)
- Amplifiers (AREA)
Abstract
PURPOSE:To suppress the approximate error of the function amplifier smaller, by constituting the amplifier with the first variable amplifier, separate function amplifier, second variable amplifier, and control amplifier and controlling the amplification factor of two variable amplifiers with the output of the control amplifier. CONSTITUTION:The input voltage x is fed to the first variable amplifier of the amplification factor g(a), the output of the amplifier 4 is to the separation function amplifier 5 having the amplification factor f(x), and the output of the amplifier 5 is fed to the second variable amplifier 6 having the amplification factor h(a). The amplification factor of the amplifiers 4 and 6 is controlled with the output of the control amplifier 7 depending on the input voltage x. When the input voltage x is comparatively small, and when the control amplifier 7 controls the amplifier 4 to g(a)=1/a, amplifier 6 to h(a)=1/f(1/f), the output of the amplifier 6 is f(x). When x is comparatively larger, and when the amplifier 7 controls the amplification factor of the amplifiers 4 and 6 so that g(a)=1 and h(a)=1, the output is f(x). Accordingly, the apporximation due to a number of polygonal lines is independently of the amplitude of x, and the error can be less.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15087277A JPS5920154B2 (en) | 1977-12-15 | 1977-12-15 | function amplifier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15087277A JPS5920154B2 (en) | 1977-12-15 | 1977-12-15 | function amplifier |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5482948A true JPS5482948A (en) | 1979-07-02 |
JPS5920154B2 JPS5920154B2 (en) | 1984-05-11 |
Family
ID=15506213
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15087277A Expired JPS5920154B2 (en) | 1977-12-15 | 1977-12-15 | function amplifier |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5920154B2 (en) |
-
1977
- 1977-12-15 JP JP15087277A patent/JPS5920154B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5920154B2 (en) | 1984-05-11 |
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