GB287927A - Improvements in systems for producing high frequency electric oscillations - Google Patents
Improvements in systems for producing high frequency electric oscillationsInfo
- Publication number
- GB287927A GB287927A GB8881/28A GB888128A GB287927A GB 287927 A GB287927 A GB 287927A GB 8881/28 A GB8881/28 A GB 8881/28A GB 888128 A GB888128 A GB 888128A GB 287927 A GB287927 A GB 287927A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit
- generators
- high frequency
- anodes
- grids
- 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
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
- H03B5/10—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being vacuum tube
Landscapes
- Electrophonic Musical Instruments (AREA)
Abstract
287,927. British Thomson-Houston Co., Ltd., (Assignees of Alexanderson, E. F. W.). March 30, 1927, [Convention date]. Thermionic generators; keying systems. - A generator particularly for ultra-high frequency comprises two or more parallel connected sets of thermionic generators each consisting of a pair of push-pull connected valves. The Figure shows two pairs of valves 5, 6 and 17, 18 respectively, the filament current is supplied through transformer 27 and the anode circuits are supplied from terminals 1, the anodes being earthed. The filaments 7, 8 are interconnected by the inductive circuit 9 and the grids by the oscillatory circuit 13, 14. To maintain a comparatively low voltage on the anodes while the valve is active, a reactor 29 is conectned in the anode supply circuit. The grids 11, 12 are connected to the cathode circuit through a key 31 and a grid bias element 32, and simultaneous control of the two generators is effected by the master key 36. In a modification, Fig. 2 (not shown), each oscillator supplies current to a separate antenna instead of as shown to a common antenna 2.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US287927XA | 1927-03-30 | 1927-03-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB287927A true GB287927A (en) | 1929-05-16 |
Family
ID=21845456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8881/28A Expired GB287927A (en) | 1927-03-30 | 1928-03-23 | Improvements in systems for producing high frequency electric oscillations |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB287927A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE748785C (en) * | 1936-01-29 | 1944-11-09 | Magnetron arrangement |
-
1928
- 1928-03-23 GB GB8881/28A patent/GB287927A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE748785C (en) * | 1936-01-29 | 1944-11-09 | Magnetron arrangement |
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