GB526418A - Improvements in or relating to modulator arrangements - Google Patents
Improvements in or relating to modulator arrangementsInfo
- Publication number
- GB526418A GB526418A GB518839A GB518839A GB526418A GB 526418 A GB526418 A GB 526418A GB 518839 A GB518839 A GB 518839A GB 518839 A GB518839 A GB 518839A GB 526418 A GB526418 A GB 526418A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resistance
- valve
- modulator
- choke
- grid
- 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
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
- H03F1/04—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in discharge-tube amplifiers
- H03F1/06—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in discharge-tube amplifiers to raise the efficiency of amplifying modulated radio frequency waves; to raise the efficiency of amplifiers acting also as modulators
Abstract
526,418. Valve modulating and amplifying circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and CLOUGH, N. H. Feb. 16, 1939, No. 5188. [Class 40 (v)] A modulator or amplifier comprises a main modulator valve Vm in series with a highfrequency driven amplifier R or a loud speaker or other audio-frequency load, and a sub-modulator Vs having its anode connected through a resistance Rb to the cathode of the valve Vm. Modulation input is applied at T 1 , T 2 and the varying voltage drop across Rb is applied to the grid of the valve Vm. The resistance Rb may be replaced by a resistance, shunted by condenser, in series with a choke, the resistance giving the necessary steady bias. In this modification the choke may be constituted as an auto transformer, or as a doubly wound transformer so as to apply larger variations to the grid of the valves Vm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB518839A GB526418A (en) | 1939-02-16 | 1939-02-16 | Improvements in or relating to modulator arrangements |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB518839A GB526418A (en) | 1939-02-16 | 1939-02-16 | Improvements in or relating to modulator arrangements |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB526418A true GB526418A (en) | 1940-09-18 |
Family
ID=9791356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB518839A Expired GB526418A (en) | 1939-02-16 | 1939-02-16 | Improvements in or relating to modulator arrangements |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB526418A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8075763B2 (en) | 2005-12-23 | 2011-12-13 | Innospec Limited | Process for treating aged crude oil residue |
-
1939
- 1939-02-16 GB GB518839A patent/GB526418A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8075763B2 (en) | 2005-12-23 | 2011-12-13 | Innospec Limited | Process for treating aged crude oil residue |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB536292A (en) | Improvements in direct current amplifiers | |
| GB526418A (en) | Improvements in or relating to modulator arrangements | |
| GB491805A (en) | Improvements in or relating to methods of modulating carrier waves and circuits therefor | |
| GB445668A (en) | Improvements in or relating to high frequency telegraph transmitters | |
| GB599382A (en) | Radio transmitters with anode voltage modulation | |
| GB444050A (en) | Improvements in or relating to thermionic valve amplifiers | |
| GB550554A (en) | Improvements relating to frequency modulation | |
| GB471128A (en) | Improvements in or relating to modulated carrier wave transmitters | |
| GB410668A (en) | Improvements in or relating to radio and like modulated carrier wave transmitters | |
| GB405019A (en) | Improvements in or relating to radio and other modulated carrier wave transmitters | |
| GB556852A (en) | A improved frequency-modulated oscillation generator | |
| GB541495A (en) | Improvements in modulation limiters for radio and like transmitters | |
| GB435561A (en) | Radio transmission arrangement, more particularly for short or ultra-short wave purposes | |
| GB668825A (en) | Improvements in or relating to thermionic valve amplifiers | |
| GB707644A (en) | Improvements in or relating to tuned thermionic valve amplifiers | |
| GB435302A (en) | Improvements in or relating to modulated carrier wave apparatus | |
| GB664341A (en) | Improvements in or relating to electronic discharge-tube amplifiers | |
| GB424470A (en) | Improvements in or relating to modulating and keying systems for radio and like transmitters | |
| GB516872A (en) | Improvements in amplification control in thermionic amplifiers | |
| GB451237A (en) | Improvements in or relating to carrier wave transmitting apparatus | |
| GB528632A (en) | Improvements in or relating to thermionic valve amplifiers | |
| GB157407A (en) | Improvements in wireless telephone transmitters | |
| GB427026A (en) | Improvements in or relating to modulating carrier wave transmitters | |
| GB475621A (en) | Improvements in or relating to thermionic modulator circuit arrangements | |
| GB388756A (en) | Improvements in or relating to modulation systems suitable for use in wireless signalling and like transmission systems |