GB275387A - Improvements in and relating to wireless receiving circuits - Google Patents
Improvements in and relating to wireless receiving circuitsInfo
- Publication number
- GB275387A GB275387A GB1664026A GB1664026A GB275387A GB 275387 A GB275387 A GB 275387A GB 1664026 A GB1664026 A GB 1664026A GB 1664026 A GB1664026 A GB 1664026A GB 275387 A GB275387 A GB 275387A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resistance
- megohms
- coupling
- valve
- order
- 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
- H04B1/163—Special arrangements for the reduction of the damping of resonant circuits of receivers
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
275,387. Garrod, A. J. July 2, 1926. Thermionic amplifiers and detectors. - In wireless receiving-circuits of the kind employing a series of resistance-coupled valves a, h, m, n with coupling-resistances e, m<2> of the order of megohms. the resistance j in the plate circuit of the detector valve is of a substantially lower value in order that a reaction coil k included in this circuit may carry effective currents. An oscillatory circuit, which may comprise a frame aerial b, loading coil c and tuning- condenser d is connected across the grid and filament of the first valve a. The grid leaks h<1>, m<1>, n<1> connected to bias batteries r may be of the order of five to ten megohms. The plate resistances e, m<2> may be of three megohms and are of the type in which the ohmic resistance does not vary substantially with the voltage applied by the battery f. The resistance j may be of 500,000 ohms. The coupling-condensers g, l, q may be of 500 m.m.f. capacity. The filaments of the valves a, m may be run at a low, temperature. A reaction coil p may be interposed between the plate of the first valve a and the coupling-condenser g as described in Specification 275,388. The high-frequency amplifier may be omitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1664026A GB275387A (en) | 1926-07-02 | 1926-07-02 | Improvements in and relating to wireless receiving circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1664026A GB275387A (en) | 1926-07-02 | 1926-07-02 | Improvements in and relating to wireless receiving circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB275387A true GB275387A (en) | 1927-08-11 |
Family
ID=10080949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1664026A Expired GB275387A (en) | 1926-07-02 | 1926-07-02 | Improvements in and relating to wireless receiving circuits |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB275387A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5678155A (en) * | 1994-03-29 | 1997-10-14 | Sharp Kabushiki Kaisha | Anti-counterfeiting device for use in an image-processing apparatus |
-
1926
- 1926-07-02 GB GB1664026A patent/GB275387A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5678155A (en) * | 1994-03-29 | 1997-10-14 | Sharp Kabushiki Kaisha | Anti-counterfeiting device for use in an image-processing apparatus |
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