GB491389A - Improvements in and relating to thermionic valve amplifying circuits - Google Patents
Improvements in and relating to thermionic valve amplifying circuitsInfo
- Publication number
- GB491389A GB491389A GB716737A GB716737A GB491389A GB 491389 A GB491389 A GB 491389A GB 716737 A GB716737 A GB 716737A GB 716737 A GB716737 A GB 716737A GB 491389 A GB491389 A GB 491389A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- gain
- frequency range
- amplifying circuits
- stages
- 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
- H03F1/42—Modifications of amplifiers to extend the bandwidth
- H03F1/48—Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers
- H03F1/50—Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers with tubes only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
491,389. Valve amplifying circuits. SCOPHONY, Ltd., and JEFFREE, J. H. March 11, 1937, No. 7167. [Class 40 (v)] In a wideband amplifier operated from an alternating current supply an even number of valve stages is employed and the couplings of each stage are so chosen that the lower part of the frequency range, including at least the frequency of the supply, is amplified in the odd numbered stages and in the even stages the amplification of this frequency range is reduced to unity to remove hum. The overall gain of the system is arranged to be substantially the same for all parts of the frequency range. The Figure shows a valve 1 having a gain at one megacycle of 10 increasing to 100 at lower frequencies. The valve 2 at one megacycle also has a gain of 10 but at lower frequencies the gain is reduced to 1À4 at 100 kilocycles and to 1 at lower frequencies. The Specification gives the values for the components used in the couplings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB716737A GB491389A (en) | 1937-03-11 | 1937-03-11 | Improvements in and relating to thermionic valve amplifying circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB716737A GB491389A (en) | 1937-03-11 | 1937-03-11 | Improvements in and relating to thermionic valve amplifying circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB491389A true GB491389A (en) | 1938-09-01 |
Family
ID=9827901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB716737A Expired GB491389A (en) | 1937-03-11 | 1937-03-11 | Improvements in and relating to thermionic valve amplifying circuits |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB491389A (en) |
-
1937
- 1937-03-11 GB GB716737A patent/GB491389A/en not_active Expired
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