GB500790A - Improvements in neutralised high-frequency amplifiers - Google Patents
Improvements in neutralised high-frequency amplifiersInfo
- Publication number
- GB500790A GB500790A GB26177/38A GB2617738A GB500790A GB 500790 A GB500790 A GB 500790A GB 26177/38 A GB26177/38 A GB 26177/38A GB 2617738 A GB2617738 A GB 2617738A GB 500790 A GB500790 A GB 500790A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tuned
- circuit
- frequency
- sept
- conductors
- 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
- 239000004020 conductor Substances 0.000 abstract 2
- 230000003321 amplification Effects 0.000 abstract 1
- 238000013016 damping Methods 0.000 abstract 1
- 230000006698 induction Effects 0.000 abstract 1
- 230000003472 neutralizing effect Effects 0.000 abstract 1
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 1
- 230000010355 oscillation Effects 0.000 abstract 1
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
- H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
-
- 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
- H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
- H03F1/12—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of attenuating means
- H03F1/13—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of attenuating means in discharge-tube amplifiers
-
- 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
- H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
- H03F1/14—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of neutralising means
- H03F1/16—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of neutralising means in discharge-tube amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/22—Automatic control in amplifiers having discharge tubes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Filters And Equalizers (AREA)
- Amplifiers (AREA)
- Microwave Amplifiers (AREA)
Abstract
500,790. Valve amplifying circuits. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Sept. 7, 1938, No. 26177. Convention date, Sept. 10, 1937. [Class 40 (v)] In a high-frequency amplifier having neutralizing capacity C1 to prevent reaction between the input and output circuits and in which, for short waves, the conductors 5, 7, 11 connecting the valve electrodes.to the rest of the circuit have appreciable inductance, these leads are tuned to the frequency of the oscillations to be amplified by condensers 15, 17, 18 and the grid lead 7 has a damping resistance 19 shunted by a circuit 20, 21 tuned to the frequency to be amplified. To prevent loss of amplification by mutual induction between the conductors, a coil 22 in the cathode lead may be coupled to coil 20 in the tuned circuit 20, 21. The application to push-pull amplifiers is also described.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEN41142D DE734230C (en) | 1937-09-11 | 1937-09-11 | Radio receiver with loss compensation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB500790A true GB500790A (en) | 1939-02-15 |
Family
ID=7348337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB26177/38A Expired GB500790A (en) | 1937-09-11 | 1938-09-07 | Improvements in neutralised high-frequency amplifiers |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2257570A (en) |
| BE (1) | BE430082A (en) |
| DE (1) | DE734230C (en) |
| FR (1) | FR843184A (en) |
| GB (1) | GB500790A (en) |
| NL (1) | NL57282C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7863978B1 (en) * | 2009-09-11 | 2011-01-04 | Harris Corporation | RF amplifier system for neutralizing internal capacitance in a cavity |
-
1937
- 1937-09-11 DE DEN41142D patent/DE734230C/en not_active Expired
-
1938
- 1938-08-10 US US224063A patent/US2257570A/en not_active Expired - Lifetime
- 1938-09-07 GB GB26177/38A patent/GB500790A/en not_active Expired
- 1938-09-08 FR FR843184D patent/FR843184A/en not_active Expired
- 1938-09-08 BE BE430082D patent/BE430082A/xx unknown
- 1938-09-09 NL NL89661A patent/NL57282C/xx active
Also Published As
| Publication number | Publication date |
|---|---|
| US2257570A (en) | 1941-09-30 |
| BE430082A (en) | 1938-10-31 |
| DE734230C (en) | 1943-04-10 |
| NL57282C (en) | 1946-04-15 |
| FR843184A (en) | 1939-06-27 |
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