GB310764A - Improvements in circuit arrangements employing thermionic valves - Google Patents
Improvements in circuit arrangements employing thermionic valvesInfo
- Publication number
- GB310764A GB310764A GB230028A GB230028A GB310764A GB 310764 A GB310764 A GB 310764A GB 230028 A GB230028 A GB 230028A GB 230028 A GB230028 A GB 230028A GB 310764 A GB310764 A GB 310764A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- detecting
- valves
- centre
- input circuits
- 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
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D1/00—Demodulation of amplitude-modulated oscillations
- H03D1/14—Demodulation of amplitude-modulated oscillations by means of non-linear elements having more than two poles
- H03D1/16—Demodulation of amplitude-modulated oscillations by means of non-linear elements having more than two poles of discharge tubes
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Superheterodyne Receivers (AREA)
- Amplifiers (AREA)
Abstract
310,764. Edison Swan Electric Co., Ltd., and Soundy, L. H. Jan. 24, 1928. Thermionic detectors and amplifiers.-In a wireless receiver the incoming oscillations are supplied in parallel to the input circuits L1, L2 of a pair of detecting-valves V1, V2' which are so arranged that, when a train of oscillations produces an increase in the output current of one valve, the same train produces a decrease in the output current of the other valve, and the outputs from the valves are separately amplified and then combined to affect an indicator I. The amplified output is combined by a centre-tapped transformer T or a sound reproducer with a centre-tapped winding, and the centre-tapping is connected to the source which supplies anode current to amplifying-valves V3, V4. The aerial circuit L3 is coupled to two separate tuned input circuits, one associated with each detecting-valve, or to a single tuned input circuit common to the detecting-valves (Fig. 2, not shown), or a tuned aerial circuit is coupled to two aperiodic input circuits one associated with each detecting-valve. One detecting-valve V2 operates by grid rectification or on the upper bend of its characteristic curve, while the other V1 operates on the lower bend. Specifications 176,401 and 310,903 (Class 39 (i), Electric lamps &c.), are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB230028A GB310764A (en) | 1928-01-24 | 1928-01-24 | Improvements in circuit arrangements employing thermionic valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB230028A GB310764A (en) | 1928-01-24 | 1928-01-24 | Improvements in circuit arrangements employing thermionic valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB310764A true GB310764A (en) | 1929-04-24 |
Family
ID=9737129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB230028A Expired GB310764A (en) | 1928-01-24 | 1928-01-24 | Improvements in circuit arrangements employing thermionic valves |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB310764A (en) |
-
1928
- 1928-01-24 GB GB230028A patent/GB310764A/en not_active Expired
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