GB506652A - Improvements in electron discharge tube amplifiers - Google Patents
Improvements in electron discharge tube amplifiersInfo
- Publication number
- GB506652A GB506652A GB33202/37A GB3320237A GB506652A GB 506652 A GB506652 A GB 506652A GB 33202/37 A GB33202/37 A GB 33202/37A GB 3320237 A GB3320237 A GB 3320237A GB 506652 A GB506652 A GB 506652A
- Authority
- GB
- United Kingdom
- Prior art keywords
- length
- line
- feedback
- amplifier
- frequency
- 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)
- Microwave Amplifiers (AREA)
Abstract
506,652. Valve amplifying circuits. STANDARD TELEPHONES & CABLES, Ltd., BARNARD, R. M., and ROCHE, A. H. Dec. 1, 1937, No. 33202. [Class 40 (v)] In a negative feedback amplifier the feedback path is constituted by a transmission line of predetermined characteristic impedance and having a length not exceeding the wavelength of the maximum frequency handled or by a short-length of coaxial cable transmission line. The Figure shows an amplifier with feedback from a resistance R1 in the cathode of the output stage to a resistance R2 in the cathode circuit of the input stage. In a modification a bridge arrangement of the feedback path is used for both the input and output. The length of the line may be comparable to the wavelength used or may be a small fraction of the wavelength corresponding to the highest frequency at which the product of the gain and the feedback exceeds unity and the terminating resistances of the line may differ from its characteristic impedance. By varying the length of the line between one half and a whole wavelength corresponding to the frequency at which instability is liable to occur the frequency discrimination of the amplifier may be controlled. Specification 374,130 is referred to.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB230988X | 1937-12-01 | ||
GB140138X | 1938-01-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB506652A true GB506652A (en) | 1939-06-01 |
Family
ID=26250182
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB33202/37A Expired GB506652A (en) | 1937-12-01 | 1937-12-01 | Improvements in electron discharge tube amplifiers |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE431370A (en) |
CH (1) | CH230988A (en) |
FR (1) | FR846761A (en) |
GB (1) | GB506652A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2566057A (en) * | 1947-10-02 | 1951-08-28 | Gen Electric | Audio amplifier system |
-
0
- BE BE431370D patent/BE431370A/xx unknown
-
1937
- 1937-12-01 GB GB33202/37A patent/GB506652A/en not_active Expired
-
1938
- 1938-11-29 FR FR846761D patent/FR846761A/en not_active Expired
- 1938-11-30 CH CH230988D patent/CH230988A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2566057A (en) * | 1947-10-02 | 1951-08-28 | Gen Electric | Audio amplifier system |
Also Published As
Publication number | Publication date |
---|---|
CH230988A (en) | 1944-02-15 |
FR846761A (en) | 1939-09-26 |
BE431370A (en) |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB528179A (en) | Improvements in or relating to thermionic valve amplifiers | |
GB553847A (en) | Electric wave amplification | |
GB562396A (en) | Improvements in and relating to electron discharge amplifiers | |
GB506652A (en) | Improvements in electron discharge tube amplifiers | |
GB566844A (en) | Distortion reduction on modulated amplifiers | |
GB590443A (en) | Thermionic amplifier for coupling to balanced output circuits | |
GB540630A (en) | Negative feedback amplifier | |
GB584475A (en) | Improvements in or relating to electrical amplifiers | |
GB757669A (en) | Amplifier with mismatched interstage networks | |
GB672373A (en) | Improvements in or relating to thermionic valve circuit arrangements | |
GB626191A (en) | Improvements in negative-feedback amplifiers | |
GB489289A (en) | Improvements in or relating to thermionic amplifiers | |
US2208144A (en) | Variable gain feedback amplifier | |
US2199080A (en) | Gain control system | |
GB484423A (en) | Improvements in electric amplifiers employing thermionic or like valves | |
GB1149742A (en) | Electric signal amplifiers | |
GB589845A (en) | Improvements in and relating to push-pull thermionic valve amplifiers | |
GB520549A (en) | Improvements in or relating to thermionic amplifiers | |
GB562392A (en) | Improvements in or relating to negative feedback amplifiers | |
GB507603A (en) | Improvements in or relating to amplifying systems | |
GB617184A (en) | Improvements in or relating to thermionic valve circuits | |
GB542000A (en) | Improvements in and relating to electric wave transmission devices | |
GB634096A (en) | Improvements in or relating to amplifiers with negative feedback | |
GB612472A (en) | Improvements in interstage coupling circuit for thermionic valve amplifiers | |
GB1075013A (en) | Improvements in or relating to frequency response modifying arrangements for condenser microphones |