GB244121A - - Google Patents
Info
- Publication number
- GB244121A GB244121A GB30790/25A GB3079025A GB244121A GB 244121 A GB244121 A GB 244121A GB 30790/25 A GB30790/25 A GB 30790/25A GB 3079025 A GB3079025 A GB 3079025A GB 244121 A GB244121 A GB 244121A
- Authority
- GB
- United Kingdom
- Prior art keywords
- source
- valves
- aerial
- grid circuits
- artificial
- 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
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B19/00—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source
- H03B19/06—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes
- H03B19/08—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes by means of a discharge device
- H03B19/10—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes by means of a discharge device using multiplication only
Abstract
244,121. Telefunken Ges. f³r Drahtlose Telegraphie. Dec. 6, 1924, [Convention date]. Thermionic generators; directive signalling.- A short-wave valve transmitter comprises a number of power amplifiers connected in parallel to a common plate or aerial circuit, and with their grid circuits excited by the several phases of an n-phase source. As shown in the Figure, an oscillator H is coupled to an artificial line K, and the grid circuits E, F, G of the three valves A, B, C are coupled to the line at points giving 120 phase displacement. The common aerial or plate circuit D is tuned to a frequency three times that of the source, and the valve grids are biassed by a battery so as to pass current during only one-quarter period of the higher frequency. For directive working, a number of spaced aerials are employed, a set of valves such as A, B, C is associated with each aerial, and the grids of these valves are excited in different phases by coupling the grid circuits of each set to an artificial line K, these lines being connected in series and energized by the source H of lower frequency. The artificial lines may be omitted if standing waves of suitable length are created in the cable by the current supplied by the source H.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE244121T | 1924-12-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB244121A true GB244121A (en) | 1926-11-04 |
Family
ID=31893605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30790/25A Expired GB244121A (en) | 1924-12-06 | 1925-12-05 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1744711A (en) |
| GB (1) | GB244121A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2513910A (en) * | 1945-03-28 | 1950-07-04 | Rca Corp | Multiplex telegraph system |
| US2618772A (en) * | 1949-01-19 | 1952-11-18 | Sorensen & Company Inc | Three-phase constant frequency electronic power supply |
-
1925
- 1925-11-23 US US70729A patent/US1744711A/en not_active Expired - Lifetime
- 1925-12-05 GB GB30790/25A patent/GB244121A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1744711A (en) | 1930-01-21 |
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