GB418033A - Improvements in or relating to wireless receiving apparatus - Google Patents
Improvements in or relating to wireless receiving apparatusInfo
- Publication number
- GB418033A GB418033A GB2017733A GB2017733A GB418033A GB 418033 A GB418033 A GB 418033A GB 2017733 A GB2017733 A GB 2017733A GB 2017733 A GB2017733 A GB 2017733A GB 418033 A GB418033 A GB 418033A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- grid
- valves
- diode
- cathode
- 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)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
418,033. Valve circuits for wireless reception. FULLER, L. G., Dunromyn, Bartons Hill, East Minster, Isle of Sheppey, Kent. July 17, 1933, No. 20177. [Class 40 (v).] A thermionic rectifier V has an output load impedance consisting of a thermionic valve VI, direct connections extending between the cathodes of each valve to an electrode of the other, and the two valves having unequal characteristics. A high frequency input circuit LC, Fig. 1, is connected across a diode V1 through a condenser C1, the cathode of valve V1 being connected to the grid of valve V whose cathode is connected to the anode of valve V1. When no signals are being received, the grid bias of valve V adjusts itself so that the grid current is equal to the space current through the diode V1, the grid acting as an anode. The characteristics of the two valves are made unequal by adjusting the temperature of the filament of valve V1 and this is stated to produce detection of a high frequency input. In a modification, the cathode of valve V, Fig. 2, is connected to the grid of valve V1 over the circuit L C, the condenser C1 of Fig. 1 being omitted. The valve V1 may be a diode or a screen grid valve, and both valves may be contained in a single envelope, Fig. 3 not shown.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2017733A GB418033A (en) | 1933-07-17 | 1933-07-17 | Improvements in or relating to wireless receiving apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2017733A GB418033A (en) | 1933-07-17 | 1933-07-17 | Improvements in or relating to wireless receiving apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB418033A true GB418033A (en) | 1934-10-17 |
Family
ID=10141662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2017733A Expired GB418033A (en) | 1933-07-17 | 1933-07-17 | Improvements in or relating to wireless receiving apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB418033A (en) |
-
1933
- 1933-07-17 GB GB2017733A patent/GB418033A/en not_active Expired
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