GB291354A - Electron discharge tube and connections therefor - Google Patents
Electron discharge tube and connections thereforInfo
- Publication number
- GB291354A GB291354A GB15639/28A GB1563928A GB291354A GB 291354 A GB291354 A GB 291354A GB 15639/28 A GB15639/28 A GB 15639/28A GB 1563928 A GB1563928 A GB 1563928A GB 291354 A GB291354 A GB 291354A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filament
- anode
- grid
- control electrode
- cathode
- 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
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/06—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes
- H03D7/10—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes the signals to be mixed being applied between different pairs of electrodes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
- Surgical Instruments (AREA)
Abstract
291,354. Levy, L. May 30, 1927, [Convention date]. Vacuum tubes.-A valve for use as frequency changer has an anode 4, Fig. 4, and a grid 10 on one side of a filament cathode 2, and a control electrode 6 on the other side the input circuit such as an aerial 13 being connected between the grid and filament, an oscillating circuit 11 and a receiver 8, such as a telephone or amplifier, being connected between the filament and the anode battery 5, and the control electrode 6 connected to the anode-filament circuit in such a manner that its potential is below that of the filament and the difference of potential between the filament and control electrode varies in the same direction as the intensity of the anode current. As shown in Fig. 3, the anode 4 is cylindrical, the auxiliary electrode 6 of curved shape, the grid 10 is helical, and the filament 2 straight. In a modification a second grid, maintained at a positive potential, is mounted between the cathode and the grid and the auxiliary electrode is connected through a condenser with the anode and through a resistance or choking coil with the cathode. A lightsensitive electrode may be used instead of an incandescent filament. The Specification as open to inspection under Sect. 91 (3) (a) comprises also an oscillation generator having a filament disposed between an anode and a control electrode. This subjectmatter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR291354X | 1927-05-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB291354A true GB291354A (en) | 1929-08-29 |
Family
ID=8887744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB15639/28A Expired GB291354A (en) | 1927-05-30 | 1928-05-29 | Electron discharge tube and connections therefor |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1877409A (en) |
| GB (1) | GB291354A (en) |
-
1928
- 1928-05-24 US US280354A patent/US1877409A/en not_active Expired - Lifetime
- 1928-05-29 GB GB15639/28A patent/GB291354A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1877409A (en) | 1932-09-13 |
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