JPS5694806A - Distortion decreasing system of amplifying circuit - Google Patents
Distortion decreasing system of amplifying circuitInfo
- Publication number
- JPS5694806A JPS5694806A JP17363279A JP17363279A JPS5694806A JP S5694806 A JPS5694806 A JP S5694806A JP 17363279 A JP17363279 A JP 17363279A JP 17363279 A JP17363279 A JP 17363279A JP S5694806 A JPS5694806 A JP S5694806A
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- amplifying circuit
- signal
- error signal
- input
- 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.)
- Pending
Links
Landscapes
- Amplifiers (AREA)
Abstract
PURPOSE: To approximate the output signal to the input signal waveform, by varying the supply voltage of an amplifying circuit with the error signal of the input/output signals.
CONSTITUTION: A comparison is given between the input and output signals by the differential amplifier 1, and the collector supply voltage of the front-stage amplifying transistor 2 is controlled by the error signal. The collector output signal of the 2nd- stage transistor 3 is attenuated by the attenuator 4 and by an amount equivalent to the gain of the amplifying circuit to secure the same level as the input signal and then supplied to the amplifier 1. At the same time, the DC level of the error signal is controlled by the transistor 5 and the Zener diode 6. The error signal is then applied to the base of the transistor 8 which is connected in series to the load resistance 7 of the transistor 2, thus varying the resistance between the collector and the emitter of the transistor 8. The amount of voltage drop is controlled by the transistor 8 to decrease the distortion component of the output waveform.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17363279A JPS5694806A (en) | 1979-12-27 | 1979-12-27 | Distortion decreasing system of amplifying circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17363279A JPS5694806A (en) | 1979-12-27 | 1979-12-27 | Distortion decreasing system of amplifying circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5694806A true JPS5694806A (en) | 1981-07-31 |
Family
ID=15964201
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17363279A Pending JPS5694806A (en) | 1979-12-27 | 1979-12-27 | Distortion decreasing system of amplifying circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5694806A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5298869A (en) * | 1992-10-22 | 1994-03-29 | Alcatel Network Systems, Inc. | Constant current and constant voltage regulating circuit for common-gate or common-base transistor devices |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4871551A (en) * | 1971-12-25 | 1973-09-27 | ||
JPS5097256A (en) * | 1973-12-25 | 1975-08-02 |
-
1979
- 1979-12-27 JP JP17363279A patent/JPS5694806A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4871551A (en) * | 1971-12-25 | 1973-09-27 | ||
JPS5097256A (en) * | 1973-12-25 | 1975-08-02 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5298869A (en) * | 1992-10-22 | 1994-03-29 | Alcatel Network Systems, Inc. | Constant current and constant voltage regulating circuit for common-gate or common-base transistor devices |
AU668213B2 (en) * | 1992-10-22 | 1996-04-26 | Alcatel N.V. | Constant current and voltage regulating circuit for common-gate or common-base transistor devices |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB909452A (en) | Improvements in small current transistor amplifiers | |
JPS5515512A (en) | Constant voltage output circuit | |
GB1413217A (en) | Circuit for shifting the dc level of a signal | |
JPS5245242A (en) | Automatic gain control circuit | |
JPS5672510A (en) | Muting circuit | |
JPS5694806A (en) | Distortion decreasing system of amplifying circuit | |
JPS5592006A (en) | Amplifier | |
JPS54142987A (en) | Protecting method from overdrive of semiconductor laser | |
JPS55117971A (en) | Level indication circuit | |
JPS54121648A (en) | Monostable multivibrator | |
SE322271B (en) | ||
JPS5442964A (en) | Automatic gain control circuit | |
JPS57208717A (en) | Control circuit for voltage control variable attenuator | |
JPS558657A (en) | Signal delay circuit | |
JPS57186811A (en) | Amplifier | |
JPS5478058A (en) | Gain control circuit | |
JPS5668806A (en) | Temperature control device | |
JPS57135511A (en) | Automatic level adjusting device | |
JPS54114157A (en) | Bias circuit | |
JPS5711507A (en) | Power supply circuit for power amplifier | |
JPS548922A (en) | Gain control circuit for chroma signal | |
JPS5537072A (en) | Semiconductor amplifier circuit device | |
JPS5326647A (en) | Automatic gain control circuit | |
JPS5484455A (en) | Automatic gain control unit | |
JPS6416006A (en) | Dc amplifier circuit |