JPS5696509A - Feedback amplifying circuit - Google Patents
Feedback amplifying circuitInfo
- Publication number
- JPS5696509A JPS5696509A JP17253179A JP17253179A JPS5696509A JP S5696509 A JPS5696509 A JP S5696509A JP 17253179 A JP17253179 A JP 17253179A JP 17253179 A JP17253179 A JP 17253179A JP S5696509 A JPS5696509 A JP S5696509A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- resistor
- resonance circuit
- impedance
- corrected
- 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
Abstract
PURPOSE: To avoid the effect of impedance of a resonance circuit, by connecting the resonance circuit and a resistor between the main electrode of a transistor at the poststage and the power supply, and feeding back the potential produced across this resistor to the prestage.
CONSTITUTION: The frequency characteristics without a feedback loop and a resonance circuit 20 are right-down ones in which the level is lowered as frequencies increase. Further, when the middle band is corrected by inserting the circuit 20, a peak is developed and it is not in good condition regardless of the effect, since high band characteristics are lowered. Thus, negative feedback is made with resistors 21 and 25 without the circuit 20. Thus, the high band part of the frequency characteristics is increased to obtain flat characteristics. With this state, when middle band is corrected through the insertion of the circuit 20, favorable characteristics in which the peaks have almost symmetry, are obtained. Further, the potential at the connecting point between resistor 21 and circuit 20 in negative feedback is independently of the impedance of the circuit 20. Thus, the frequency correction for a plurality of parts such as high and middle bands can be made by using the same amplifier.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17253179A JPS5696509A (en) | 1979-12-28 | 1979-12-28 | Feedback amplifying circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17253179A JPS5696509A (en) | 1979-12-28 | 1979-12-28 | Feedback amplifying circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5696509A true JPS5696509A (en) | 1981-08-04 |
Family
ID=15943634
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17253179A Pending JPS5696509A (en) | 1979-12-28 | 1979-12-28 | Feedback amplifying circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5696509A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56167692U (en) * | 1980-05-14 | 1981-12-11 | ||
WO2004062093A3 (en) * | 2002-12-20 | 2004-09-16 | California Inst Of Techn | Common gate with resistive feed-through low noise amplifier |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5218539A (en) * | 1975-08-05 | 1977-02-12 | Nissan Motor Co Ltd | Overheat prevntive system of exhaust treatment device |
-
1979
- 1979-12-28 JP JP17253179A patent/JPS5696509A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5218539A (en) * | 1975-08-05 | 1977-02-12 | Nissan Motor Co Ltd | Overheat prevntive system of exhaust treatment device |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56167692U (en) * | 1980-05-14 | 1981-12-11 | ||
JPS641784Y2 (en) * | 1980-05-14 | 1989-01-17 | ||
WO2004062093A3 (en) * | 2002-12-20 | 2004-09-16 | California Inst Of Techn | Common gate with resistive feed-through low noise amplifier |
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