JPS5482948A - Functional amplifier - Google Patents

Functional amplifier

Info

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
Application number
JP15087277A
Other languages
Japanese (ja)
Other versions
JPS5920154B2 (en
Inventor
Masatoshi Tsunoda
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP15087277A priority Critical patent/JPS5920154B2/en
Publication of JPS5482948A publication Critical patent/JPS5482948A/en
Publication of JPS5920154B2 publication Critical patent/JPS5920154B2/en
Expired legal-status Critical Current

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.
JP15087277A 1977-12-15 1977-12-15 function amplifier Expired JPS5920154B2 (en)

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)

Also Published As

Publication number Publication date
JPS5920154B2 (en) 1984-05-11

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