GB487270A - Improvements in thermionic valve amplifiers employing negative feedback - Google Patents
Improvements in thermionic valve amplifiers employing negative feedbackInfo
- Publication number
- GB487270A GB487270A GB658037A GB658037A GB487270A GB 487270 A GB487270 A GB 487270A GB 658037 A GB658037 A GB 658037A GB 658037 A GB658037 A GB 658037A GB 487270 A GB487270 A GB 487270A
- Authority
- GB
- United Kingdom
- Prior art keywords
- negative feedback
- operating
- operating range
- zero
- range
- 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.)
- Expired
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
- H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
- H03F1/36—Negative-feedback-circuit arrangements with or without positive feedback in discharge-tube amplifiers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
487,270. Valve amplifying circuits. GENERAL ELECTRIC CO., Ltd., and FARREN, L. I. March 5, 1937, No. 6580. [Class 40 (v)] A multi-stage negative feedback amplifier operating over a range f1 to f2 where f1 is different from zero and f2 is not much greater than 2f1 comprises at least one stage resonant within or near the operating range and the gain once round the loop Á# is not less than 100 over the operating range. The Figure shows circuits L1C1 L2C2 resonant near the limiting frequencies of the operating range and the impedance of which at high or low operating frequencies approximates to a resistance. As shown each limb of the tuned circuits includes a resistance R one of which resistances may be zero. The Specification gives a mathematical discussion of the phase changes produced and the gain obtained and numerical data for the amplifier shown.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB658037A GB487270A (en) | 1937-03-05 | 1937-03-05 | Improvements in thermionic valve amplifiers employing negative feedback |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB658037A GB487270A (en) | 1937-03-05 | 1937-03-05 | Improvements in thermionic valve amplifiers employing negative feedback |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB487270A true GB487270A (en) | 1938-06-17 |
Family
ID=9817081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB658037A Expired GB487270A (en) | 1937-03-05 | 1937-03-05 | Improvements in thermionic valve amplifiers employing negative feedback |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB487270A (en) |
-
1937
- 1937-03-05 GB GB658037A patent/GB487270A/en not_active Expired
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