GB393379A - An improved method for modulating high frequency transmitters - Google Patents
An improved method for modulating high frequency transmittersInfo
- Publication number
- GB393379A GB393379A GB583232A GB583232A GB393379A GB 393379 A GB393379 A GB 393379A GB 583232 A GB583232 A GB 583232A GB 583232 A GB583232 A GB 583232A GB 393379 A GB393379 A GB 393379A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- plate
- triode
- grid
- supersonic 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
- 230000005284 excitation Effects 0.000 abstract 2
- 230000010349 pulsation Effects 0.000 abstract 1
- 229920006395 saturated elastomer Polymers 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C1/00—Amplitude modulation
- H03C1/16—Amplitude modulation by means of discharge device having at least three electrodes
- H03C1/18—Amplitude modulation by means of discharge device having at least three electrodes carrier applied to control grid
- H03C1/20—Amplitude modulation by means of discharge device having at least three electrodes carrier applied to control grid modulating signal applied to anode
Landscapes
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
393,379. Valve modulating circuits. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and LE ROSSIGNOL, R., c/o General Electric Co., Ltd., Wembley, Middlesex. Feb. 26, 1932, No. 5832. [Class 40 (v).] The plate current of a radio transmitter valve 8 is fed from a triode valve 2 which has both its plate and grid excited at a supersonic frequency, the microphone 7 being arranged to vary the phase relation between the grid and plate excitation. The supersonic frequency may be supplied through a transformer 1 to the plate circuit of the triode 2, and may be generated by an alternator or amplified by the valve 11. The grid of the triode 2 is also excited from the transformer 1, but the phase of the excitation is variably retarded by a choke coil 5, which is variably saturated by connecting it in the joint plate circuit of a pair of anode-bend rectifiers 6 having their grids connected in push-pull to the microphone 7. The valve 2, which is of the gas-filled or vacuum type, functions as a variable rectifier of the supersonic frequency, and the supersonic pulsations are smoothed out by the condenser 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB583232A GB393379A (en) | 1932-02-26 | 1932-02-26 | An improved method for modulating high frequency transmitters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB583232A GB393379A (en) | 1932-02-26 | 1932-02-26 | An improved method for modulating high frequency transmitters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB393379A true GB393379A (en) | 1933-06-08 |
Family
ID=9803457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB583232A Expired GB393379A (en) | 1932-02-26 | 1932-02-26 | An improved method for modulating high frequency transmitters |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB393379A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE767318C (en) * | 1938-04-10 | 1952-05-23 | Lorenz A G C | Arrangement for the generation or sampling of very brief pulses, especially for the purpose of distance measurement |
-
1932
- 1932-02-26 GB GB583232A patent/GB393379A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE767318C (en) * | 1938-04-10 | 1952-05-23 | Lorenz A G C | Arrangement for the generation or sampling of very brief pulses, especially for the purpose of distance measurement |
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