GB411417A - Improvements in or relating to the reproduction of sounds - Google Patents
Improvements in or relating to the reproduction of soundsInfo
- Publication number
- GB411417A GB411417A GB2410932A GB2410932A GB411417A GB 411417 A GB411417 A GB 411417A GB 2410932 A GB2410932 A GB 2410932A GB 2410932 A GB2410932 A GB 2410932A GB 411417 A GB411417 A GB 411417A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- transformer
- amplification
- degree
- modulation
- 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
- 230000003321 amplification Effects 0.000 abstract 3
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 3
- 238000000034 method Methods 0.000 abstract 2
- 238000007689 inspection Methods 0.000 abstract 1
- 230000010355 oscillation Effects 0.000 abstract 1
- 239000011800 void material Substances 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
- H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
411,417. Valve amplifying circuits. AIGNER, F., Technische Hochschule, 4, Karlsplatz, Vienna. Aug. 29, 1932, No. 24109. Void [Abridged as open to inspection under Sect. 91 of the Acts, Aug. 29, 1932]. [Class 40 (v).] Consists of a special method of reproducing recorded sound, whereby fidelity of reproduction as regards intensity differences may be attained. For this purpose, rectifiers are used in such a way as to effect a " dynamic modulation ", i.e. modulation of the degree of amplification effected by the reproducing system. As shown in the Figure a transformer T<1> applies alternating potential to the grids of two valves V<1>, V<4>, arranged in push-pull. A valve V<3>, serving as an amplifying rectifier, is connected as shown to the anode battery A, the control of the valve V<3> being effected through a transformer T<3>, the input of which is connected to the input side of the transformer T<1>. With this arrangement, using a valve V<3> with a suitable characteristic, the degree of amplification of the system is proportional to a power of the applied alternating potential. This modulation of the degree of amplification may be increased by the use of several amplifying stages. Any suitable known method of modulating high frequency oscillations may be used for carrying out the invention.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2410932A GB411417A (en) | 1932-08-29 | 1932-08-29 | Improvements in or relating to the reproduction of sounds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2410932A GB411417A (en) | 1932-08-29 | 1932-08-29 | Improvements in or relating to the reproduction of sounds |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB411417A true GB411417A (en) | 1934-06-07 |
Family
ID=10206508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2410932A Expired GB411417A (en) | 1932-08-29 | 1932-08-29 | Improvements in or relating to the reproduction of sounds |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB411417A (en) |
-
1932
- 1932-08-29 GB GB2410932A patent/GB411417A/en not_active Expired
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