GB162770A - Improvements in and relating to the reception of continuous waves in wireless telegraphy - Google Patents
Improvements in and relating to the reception of continuous waves in wireless telegraphyInfo
- Publication number
- GB162770A GB162770A GB321820A GB321820A GB162770A GB 162770 A GB162770 A GB 162770A GB 321820 A GB321820 A GB 321820A GB 321820 A GB321820 A GB 321820A GB 162770 A GB162770 A GB 162770A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- circuit
- frequency
- damping
- grid
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
162,770. Macrorie, A. K., and Appleton, W. A. Feb. 2, 1920. Audible reception of unmodulated continuous waves; thermionic valves, arrangements and connections of.-Relates to means for receiving continuous-wave signals wherein the amplitude of the received energy is directly varied at an audible frequency by means of a damping-valve controlled by a second valve oscillating at a low frequency. A triode valve C, D, E is placed across the inductance A of the tuned receiving-circuit A, B, and the effective resistance of this valve is varied by imposing a low-frequency alternation of potential upon its grid E by means of a generator valve KLM coupled to the grid circuit of the first valve through the coils G, H. Fig. 2 shows the effective result upon the amplitude of the oscillatory currents flowing in the receiving- circuit A, B, the curve V, G, V<1> representing the varying potential of the grid E. After rectification, the modified or 'damped signal-energy appears in the telephones as a series of wavetrains of audible frequency. The damping-valve' CDE may be coupled to the ancde circuit of the last valve in a high-frequency amplifying-set. Or instead of being inserted directly across the inductance A, the damping-valve :may be inductively coupled thereto by means of a step-up transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB321820A GB162770A (en) | 1920-02-02 | 1920-02-02 | Improvements in and relating to the reception of continuous waves in wireless telegraphy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB321820A GB162770A (en) | 1920-02-02 | 1920-02-02 | Improvements in and relating to the reception of continuous waves in wireless telegraphy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB162770A true GB162770A (en) | 1921-05-02 |
Family
ID=9754176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB321820A Expired GB162770A (en) | 1920-02-02 | 1920-02-02 | Improvements in and relating to the reception of continuous waves in wireless telegraphy |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB162770A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5687092A (en) * | 1995-05-05 | 1997-11-11 | Nordson Corporation | Method of compensating for changes in flow characteristics of a dispensed fluid |
-
1920
- 1920-02-02 GB GB321820A patent/GB162770A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5687092A (en) * | 1995-05-05 | 1997-11-11 | Nordson Corporation | Method of compensating for changes in flow characteristics of a dispensed fluid |
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