JPS56116312A - Feedback type amplifier - Google Patents
Feedback type amplifierInfo
- Publication number
- JPS56116312A JPS56116312A JP1899180A JP1899180A JPS56116312A JP S56116312 A JPS56116312 A JP S56116312A JP 1899180 A JP1899180 A JP 1899180A JP 1899180 A JP1899180 A JP 1899180A JP S56116312 A JPS56116312 A JP S56116312A
- Authority
- JP
- Japan
- Prior art keywords
- output
- trq
- signal
- current
- circuit
- 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 enable to obtain greater signal current of low distortion factor from the output signal, by providing a transistor at the output of an amplifying circuit and obtaining the feedback signal from the emitter of this transistor and the output signal from the collector.
CONSTITUTION: An input signal VIN is fed to a noninverting input of an amplifying circuit 1, the output is fed to the base of a transistor TRQ, and a feedback circuit consisting of resistors Rf, Ri is provided between the emitter of TRQ and the inverting input. A series circuit consisting of a resistor R2 and a capacitor C setting an AC impedance is provided in parallel with a resistor R1 setting DC current with the emitter of TRQ, to obtain the output current iL. Taking the output voltage of the circuit 1 as VOUT and the AC impedance of the capacitor C as negligible, the signal curent iL can be expressed as equation I and the DC output current IL as equation II, and the currents iL, IL can independently be set. Larger output current iL can be obtained without sacrificing the dynamic range. Further, since TRQ is inserted into the feedback loop of the circuit 1, the nonlinear distortion of TRQ can be reduced.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1899180A JPS56116312A (en) | 1980-02-20 | 1980-02-20 | Feedback type amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1899180A JPS56116312A (en) | 1980-02-20 | 1980-02-20 | Feedback type amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56116312A true JPS56116312A (en) | 1981-09-12 |
Family
ID=11987031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1899180A Pending JPS56116312A (en) | 1980-02-20 | 1980-02-20 | Feedback type amplifier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56116312A (en) |
-
1980
- 1980-02-20 JP JP1899180A patent/JPS56116312A/en active Pending
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