GB262115A - Improvements in thermionic valve generators and circuit arrangements therefor - Google Patents
Improvements in thermionic valve generators and circuit arrangements thereforInfo
- Publication number
- GB262115A GB262115A GB29755/26A GB2975526A GB262115A GB 262115 A GB262115 A GB 262115A GB 29755/26 A GB29755/26 A GB 29755/26A GB 2975526 A GB2975526 A GB 2975526A GB 262115 A GB262115 A GB 262115A
- Authority
- GB
- United Kingdom
- Prior art keywords
- grid
- condenser
- coil
- coils
- filament
- 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
- Geophysics And Detection Of Objects (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
- Constitution Of High-Frequency Heating (AREA)
- Hybrid Cells (AREA)
Abstract
262,115. Soc. Francaise Radio Electrique. Nov. 25, 1925, [Convention date]. Addition to 256,653. Thermionic generators, particularly for short waves, are arranged so that the plate, the high and low tension sources, and other bulky apparatus are at earth potential so far as high-frequency currents are concerned, thereby reducing dielectric losses. For the single-valve arrangement shown in Fig. 1, the earthed filament battery 2 is connected to the filament 10 through coils 9 (shown as straight wires). The plate 12 is connected to earth through an ammeter 3 and high-tension source 1, the large shunting-condenser 4 maintaining the plate at zero highfrequency potential. The grid 11 is connected to earth through a coil 9<a> (shown as a straight wire), a high-frequency ammeter 8, a direct-current ammeter 7 and grid-leak 5, the usual condenser 6 being shunted across the elements 5 and 7. In this way all the apparatus except the filament 10, grid 11, and inductances 9, 9<a> carry substantially no high-frequency potentials. The coils 9, 9<a> are tightly coupled and no capacity beyond the interelectrode capacities need be employed. A grid condenser 14 may however be used for increasing the wave-length, or a coil 15 for reducing it. The additional coil 15 may form an extension of the grid coil 9<a>, the grid being connected to an intermediate point of a short-circuited coil. Fig. 4 shows a symmetrical arrangement of two valves. 13, 13<1>. The plates are connected to each other and are earthed through the source 1 shunted by the condenser 4. The filament supply passes from the earthed battery 2 through the coils 9. 9<1> in parallel. The grid circuits comprise the coils 9<a>, 9b and the common grid leak 5 and condenser 6. Points of opposite potential may be used for exciting symmetrical aeriaJs.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR256653T | 1925-08-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB262115A true GB262115A (en) | 1927-08-11 |
Family
ID=31897687
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB19752/26A Expired GB256653A (en) | 1925-08-10 | 1926-08-10 | |
GB29755/26A Expired GB262115A (en) | 1925-08-10 | 1926-11-24 | Improvements in thermionic valve generators and circuit arrangements therefor |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB19752/26A Expired GB256653A (en) | 1925-08-10 | 1926-08-10 |
Country Status (5)
Country | Link |
---|---|
US (2) | US1755386A (en) |
DE (1) | DE579408C (en) |
FR (2) | FR614231A (en) |
GB (2) | GB256653A (en) |
NL (1) | NL20149C (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2145735A (en) * | 1936-01-29 | 1939-01-31 | Gen Electric | Short wave radio transmitter |
DE967391C (en) * | 1942-03-01 | 1957-11-07 | Fernseh Gmbh | Circuit for generating deflection currents |
US2431179A (en) * | 1942-10-03 | 1947-11-18 | Rca Corp | Multitube self-pulsing oscillator |
NL103747C (en) * | 1955-06-03 | |||
US3437931A (en) * | 1965-12-16 | 1969-04-08 | Gates Radio Co | Shunt fed pi-l output network |
-
0
- NL NL20149D patent/NL20149C/xx active
-
1925
- 1925-08-10 FR FR614231D patent/FR614231A/en not_active Expired
- 1925-11-25 FR FR31599D patent/FR31599E/en not_active Expired
-
1926
- 1926-04-05 US US99740A patent/US1755386A/en not_active Expired - Lifetime
- 1926-08-10 DE DES75658D patent/DE579408C/en not_active Expired
- 1926-08-10 GB GB19752/26A patent/GB256653A/en not_active Expired
- 1926-11-06 US US146620A patent/US1776381A/en not_active Expired - Lifetime
- 1926-11-24 GB GB29755/26A patent/GB262115A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US1776381A (en) | 1930-09-23 |
FR614231A (en) | 1926-12-09 |
DE579408C (en) | 1933-06-27 |
GB256653A (en) | 1927-05-12 |
US1755386A (en) | 1930-04-22 |
FR31599E (en) | 1927-03-17 |
NL20149C (en) |
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