GB256998A - Improvements in or relating to wireless receiving sets - Google Patents
Improvements in or relating to wireless receiving setsInfo
- Publication number
- GB256998A GB256998A GB765725A GB765725A GB256998A GB 256998 A GB256998 A GB 256998A GB 765725 A GB765725 A GB 765725A GB 765725 A GB765725 A GB 765725A GB 256998 A GB256998 A GB 256998A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- circuit
- plate
- coil
- battery
- 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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/22—Circuits for receivers in which no local oscillation is generated
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
256,998. Wilcockson, J., and Roberts, H. W. March 21, 1925. Thermionic amplifiers and detectors. - The aerial coil 5 is connected through a biasing battery to the grid of the first valve C and to earth, and also to a tuned loop circuit 9, which applies (1) aerial voltage variations, and (2) rectified voltages derived from the output coil 12 of the rectifying valve C, across the plate and grid of the second valve D, which carries no direct plate voltage from the battery 13. A secondary winding 11 coupled to the primary coil 9 is connected, in series with the primary 14 of the low-frequency transformer, between the plate and filament of the third valve E. The ratio of the windings of the coils 9 and 11 is 64 to 89, and this is stated to be an essential factor to the operation of the circuit. The phones T are tapped off from the plate circuit of the low-frequency amplifier E as shown, and are connected back through a loop. circuit to the coil 12 and the high-tension battery 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB765725A GB256998A (en) | 1925-03-21 | 1925-03-21 | Improvements in or relating to wireless receiving sets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB765725A GB256998A (en) | 1925-03-21 | 1925-03-21 | Improvements in or relating to wireless receiving sets |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB256998A true GB256998A (en) | 1926-08-23 |
Family
ID=9837300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB765725A Expired GB256998A (en) | 1925-03-21 | 1925-03-21 | Improvements in or relating to wireless receiving sets |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB256998A (en) |
-
1925
- 1925-03-21 GB GB765725A patent/GB256998A/en not_active Expired
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