GB417515A - Improvements in or relating to wireless receiving systems - Google Patents
Improvements in or relating to wireless receiving systemsInfo
- Publication number
- GB417515A GB417515A GB997433A GB997433A GB417515A GB 417515 A GB417515 A GB 417515A GB 997433 A GB997433 A GB 997433A GB 997433 A GB997433 A GB 997433A GB 417515 A GB417515 A GB 417515A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diode
- filament
- anode
- valve
- potential
- 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
- 230000003321 amplification Effects 0.000 abstract 1
- 230000003111 delayed effect Effects 0.000 abstract 1
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/22—Automatic control in amplifiers having discharge tubes
Landscapes
- Electronic Switches (AREA)
- Transmitters (AREA)
- Near-Field Transmission Systems (AREA)
Abstract
417,515. Valve circuits for wireless reception. SOWERBY, A. L. M. R., 85, Westbourne Grove, Bayswater, and COSSOR, Ltd., A. C., 22, Highbury Grove, both in London. April 3, 1933, No. 9974. [Class 40 (v).] Automatic volume control of a wireless receiving system is delayed by a voltage due to the fall of potential through a directly-heated cathode. As shown the modulated carrier is applied to the two diode anodes A, B of a double-diode triode valve V, the anode A being associated with the positive leg of the filament and connected through a condenser C2 to the high-potential side of the input circuit L, C1, while the anode B is associated with the negative leg of the filament and connected directly to the same point of the input circuit. The demodulated signals produced by the diode B in its load resistance VR are fed to the grid of the valve V for amplification, and the D.C. potentials developed across the load resistance R1 of the diode A are used for automatic volume control. The diode A does not produce an appreciable output until the signal reaches a certain amplitude as its anode is normally at the same potential as the limb of the filament which forms its cathode. Specification 413,388 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB997433A GB417515A (en) | 1933-04-03 | 1933-04-03 | Improvements in or relating to wireless receiving systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB997433A GB417515A (en) | 1933-04-03 | 1933-04-03 | Improvements in or relating to wireless receiving systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB417515A true GB417515A (en) | 1934-10-03 |
Family
ID=9882195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB997433A Expired GB417515A (en) | 1933-04-03 | 1933-04-03 | Improvements in or relating to wireless receiving systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB417515A (en) |
-
1933
- 1933-04-03 GB GB997433A patent/GB417515A/en not_active Expired
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