GB322294A - Improvements in or relating to electrical amplifying arrangements - Google Patents
Improvements in or relating to electrical amplifying arrangementsInfo
- Publication number
- GB322294A GB322294A GB3086628A GB3086628A GB322294A GB 322294 A GB322294 A GB 322294A GB 3086628 A GB3086628 A GB 3086628A GB 3086628 A GB3086628 A GB 3086628A GB 322294 A GB322294 A GB 322294A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carrier
- input
- voltage
- frequency
- amplifiers
- 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
- 238000010079 rubber tapping Methods 0.000 abstract 2
- 230000003321 amplification Effects 0.000 abstract 1
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/34—DC amplifiers in which all stages are DC-coupled
- H03F3/36—DC amplifiers in which all stages are DC-coupled with tubes only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Ac-Ac Conversion (AREA)
- Generation Of Surge Voltage And Current (AREA)
- Dc-Dc Converters (AREA)
Abstract
322,294. Dicker, S. G. S., (Naamlooze Vennootschap Philips' Gloeilampenfabrieken), Oct. 24, 1928. Thermionic amplifiers.-Re1ates to means for amplifying a direct or slowly-fluctuating voltage by superposing the input upon a high or medium frequency carrier-wave. In order to relieve the final valve rectifier 18 of the load represented by the carrier-currents, thereby allowing a more substantive amplification) of the low-frequency input 9, 10, the carrier is eliminated in a preliminary stage consisting of two balanced pushpull amplifiers 12, 13. A portion of the input voltage from the terminals 9, 10 is applied to the grids of the amplifiers 12, 13 by adjustable tappings 6, 8 across a potentiometer 7. A tapping 5 on a second potentiometer 4 is adjusted to balance the carrier frequency 1 across the tuned output circuits 14, 16 so long as there is no voltage applied across the points 9, 10. A tuned circuit 10, 20 shunted across the rectifier output bye-passes residual high-frequency components. To prevent distortion a fraction of the output voltage across the resistance 21 is fed back in phase opposition between the points 22, 23 of the input. Specification 323,823 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3086628A GB322294A (en) | 1928-10-24 | 1928-10-24 | Improvements in or relating to electrical amplifying arrangements |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3086628A GB322294A (en) | 1928-10-24 | 1928-10-24 | Improvements in or relating to electrical amplifying arrangements |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB322294A true GB322294A (en) | 1929-12-05 |
Family
ID=10314352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3086628A Expired GB322294A (en) | 1928-10-24 | 1928-10-24 | Improvements in or relating to electrical amplifying arrangements |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB322294A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2833991A (en) * | 1953-12-11 | 1958-05-06 | Rca Corp | Balanced modulator |
-
1928
- 1928-10-24 GB GB3086628A patent/GB322294A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2833991A (en) * | 1953-12-11 | 1958-05-06 | Rca Corp | Balanced modulator |
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