JPS5787224A - Linearizer - Google Patents

Linearizer

Info

Publication number
JPS5787224A
JPS5787224A JP55162128A JP16212880A JPS5787224A JP S5787224 A JPS5787224 A JP S5787224A JP 55162128 A JP55162128 A JP 55162128A JP 16212880 A JP16212880 A JP 16212880A JP S5787224 A JPS5787224 A JP S5787224A
Authority
JP
Japan
Prior art keywords
fet
signal
input
gate
resistance
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
JP55162128A
Other languages
Japanese (ja)
Other versions
JPH0239130B2 (en
Inventor
Yasushi Fukuhara
Toshio Watanabe
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.)
Toyoda Koki KK
Original Assignee
Toyoda Koki KK
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 Toyoda Koki KK filed Critical Toyoda Koki KK
Priority to JP55162128A priority Critical patent/JPS5787224A/en
Publication of JPS5787224A publication Critical patent/JPS5787224A/en
Publication of JPH0239130B2 publication Critical patent/JPH0239130B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3205—Modifications of amplifiers to reduce non-linear distortion in field-effect transistor amplifiers

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Abstract

PURPOSE:To linearize a signal with a high precision by a simple circit, by inputting an input signal having a saturation characteristic to a voltage dividing circuit consisting of a resistance and an FET and by applying a voltage corresponding to the input signal to the gate of the FET. CONSTITUTION:A negative signal ei given to an input terminal 10 is applied to a source S of an N-channel depletion type FET through a resistance R1, and a drain D of the FET is grounded, and the signal ei is applied to a gate G of the FET also. When the resistance between the source and the gate of the FET is denoted as RSD, the output signal eo becomes the product between the input signal ei and a voltage division rate K=1/(1+R1/RSD). Since RSD is increased quadratic-functionally for the negative voltage applied acorss the gate G and the source S, the voltage division rate K is smaller than 1 for the small input ei and approaches 1 in accordance with enlargement of the input ei, and thus, the voltage division rate K is changed in respect to the saturation characteristic. Consequently, the resistance R1 is selected to change the output signal linearly for the input of the saturation characteristic.
JP55162128A 1980-11-18 1980-11-18 Linearizer Granted JPS5787224A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55162128A JPS5787224A (en) 1980-11-18 1980-11-18 Linearizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55162128A JPS5787224A (en) 1980-11-18 1980-11-18 Linearizer

Publications (2)

Publication Number Publication Date
JPS5787224A true JPS5787224A (en) 1982-05-31
JPH0239130B2 JPH0239130B2 (en) 1990-09-04

Family

ID=15748568

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55162128A Granted JPS5787224A (en) 1980-11-18 1980-11-18 Linearizer

Country Status (1)

Country Link
JP (1) JPS5787224A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4499416A (en) * 1981-11-25 1985-02-12 Tokyo Shibaura Denki Kabushiki Kaisha Reference voltage circuit for obtaining a constant voltage irrespective of the fluctuations of a power supply voltage
US5191279A (en) * 1990-03-15 1993-03-02 Ixys Corporation Current limiting method and apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4499416A (en) * 1981-11-25 1985-02-12 Tokyo Shibaura Denki Kabushiki Kaisha Reference voltage circuit for obtaining a constant voltage irrespective of the fluctuations of a power supply voltage
US5191279A (en) * 1990-03-15 1993-03-02 Ixys Corporation Current limiting method and apparatus

Also Published As

Publication number Publication date
JPH0239130B2 (en) 1990-09-04

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