JPS57206106A - Dc amplifier - Google Patents
Dc amplifierInfo
- Publication number
- JPS57206106A JPS57206106A JP56080877A JP8087781A JPS57206106A JP S57206106 A JPS57206106 A JP S57206106A JP 56080877 A JP56080877 A JP 56080877A JP 8087781 A JP8087781 A JP 8087781A JP S57206106 A JPS57206106 A JP S57206106A
- Authority
- JP
- Japan
- Prior art keywords
- amplifier
- band
- differential
- input
- amplified
- 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
- Amplifiers (AREA)
Abstract
PURPOSE: To obtain a DC amplifier which has a gain constant from the DC through a high frequency, by realizing the characteristics of a DC band with an FET input differential amplifier as well as the characteristics of an AC band with the amplifying function of two FETs and the characteristics of a differential wide-band amplifier.
CONSTITUTION: The input signal of one side supplied through an input terminal 1 is amplified by an FET input differential amplifier 8 and then applied to a differential wide-band amplifier 7. The input signal of the other side is applied to the amplifier 7 after the AC component obtained by eliminating the DC component through a capacitor 5 is amplified by a differential amplifier consisting of the FETs 13 and 14, and then multiplied by the output the amplifier 8 to be amplified. Then the feedback is applied to the negative polarity input terminal of the amplifier and the gate terminal of the FET14 from the output of the amplifier 7 by the resistances 11 and 12. Thus a prescribed amplification factor is secured between the input terminal 1 and an output terminal 4.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56080877A JPS57206106A (en) | 1981-05-29 | 1981-05-29 | Dc amplifier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56080877A JPS57206106A (en) | 1981-05-29 | 1981-05-29 | Dc amplifier |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57206106A true JPS57206106A (en) | 1982-12-17 |
JPS6237844B2 JPS6237844B2 (en) | 1987-08-14 |
Family
ID=13730571
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56080877A Granted JPS57206106A (en) | 1981-05-29 | 1981-05-29 | Dc amplifier |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57206106A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0470104A (en) * | 1990-07-11 | 1992-03-05 | Hitachi Ltd | Wide-band amplifier |
-
1981
- 1981-05-29 JP JP56080877A patent/JPS57206106A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0470104A (en) * | 1990-07-11 | 1992-03-05 | Hitachi Ltd | Wide-band amplifier |
Also Published As
Publication number | Publication date |
---|---|
JPS6237844B2 (en) | 1987-08-14 |
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