GB360305A - Improvements in or relating to radio and like high frequency receivers - Google Patents
Improvements in or relating to radio and like high frequency receiversInfo
- Publication number
- GB360305A GB360305A GB5297/31A GB529731A GB360305A GB 360305 A GB360305 A GB 360305A GB 5297/31 A GB5297/31 A GB 5297/31A GB 529731 A GB529731 A GB 529731A GB 360305 A GB360305 A GB 360305A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuits
- input
- feb
- valves
- intermediate 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
- 230000010355 oscillation Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/14—Balanced arrangements
- H03D7/1416—Balanced arrangements with discharge tubes having more than two electrodes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
360,305. Valve circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London.-(Assignees of Roberts, W. van B. ; 155, Hodge Road, Princeton, New Jersey, U.S.A.) Feb. 19, 1931, No. 5297. Convention date, Feb. 19, 1930. [Class 40 (v).] A superheterodyne receiver comprises a pair of valves 7, 8, in push-pull, a signal receiving circuit 9 and a local oscillation circuit 3, one of said circuits being symmetrically coupled with the input circuits of the valves, and the other coupled to the input of one valve only, while the intermediate frequency amplifier is differentially associated with the output inductance L1. When the oscillator 3 is inoperative no signal is passed to the intermediate frequency amplifier owing to the in-phase input and differential output; interference from undesired signals is thus eliminated. A band pass filter may be used between the aerial and circuit 9, which may be untuned.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US360305XA | 1930-02-19 | 1930-02-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB360305A true GB360305A (en) | 1931-11-05 |
Family
ID=21886208
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5297/31A Expired GB360305A (en) | 1930-02-19 | 1931-02-19 | Improvements in or relating to radio and like high frequency receivers |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB360305A (en) |
-
1931
- 1931-02-19 GB GB5297/31A patent/GB360305A/en not_active Expired
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