JPS5787224A - Linearizer - Google Patents
LinearizerInfo
- 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
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.
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)
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 |
-
1980
- 1980-11-18 JP JP55162128A patent/JPS5787224A/en active Granted
Cited By (2)
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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