GB369167A - Improvements in or relating to thermionic amplifiers and oscillation generators - Google Patents
Improvements in or relating to thermionic amplifiers and oscillation generatorsInfo
- Publication number
- GB369167A GB369167A GB31587/31A GB3158731A GB369167A GB 369167 A GB369167 A GB 369167A GB 31587/31 A GB31587/31 A GB 31587/31A GB 3158731 A GB3158731 A GB 3158731A GB 369167 A GB369167 A GB 369167A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oscillator
- line
- grid
- amplifier
- varying
- 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
- 230000010355 oscillation Effects 0.000 title 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract 1
- 239000005864 Sulphur Substances 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 230000003472 neutralizing effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 abstract 1
- 238000010079 rubber tapping Methods 0.000 abstract 1
- 238000012216 screening Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
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
- H03B5/18—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising distributed inductance and capacitance
- H03B5/1817—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising distributed inductance and capacitance the frequency-determining element being a cavity resonator
- H03B5/1835—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising distributed inductance and capacitance the frequency-determining element being a cavity resonator the active element in the amplifier being a vacuum tube
Landscapes
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
369,167. Valve generating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London. -(Assignees of Finch, J. L.; Patchogue, and Conklin, J. W. ; Rocky Point, both in Long Island, New York, U.S.A.) Nov. 14, 1931, No. 31587. Convention date, Dec. 3, 1930. [Class 40 (v).] In a thermionic amplifier or oscillator stabilized in frequency by the use of a long electrical line connected between input and output, stray and interelectrode feed-back is reduced by (a) neutralizing, (b) the use of valves in push-pull. The line may include a U-shaped or trombone slide for varying the length and may consist wholly or in part of lumped capacity and inductance. Fig. 1 shows a neutralized oscillator 8 modulated by a transformer and stabilized by the line 10 coupled to a power amplifier 22. In a modification, Fig. 2 (not shown), keying is effected by varying the grid bias of the amplifier or the oscillator. Fig. 4 shows a screen-grid push-pull oscillator 47, 49 in which the lines are adjusted by members 58, 60 and are inductively coupled to the input and output of the oscillator. Modulation is effected by varying screen-grid potential and the tappings to the line may be made at points remote from the ends by one quarter of the working wave-length to avoid difficulty in obtaining aperiodic transfer due to the end turns. The line may be used to couple the output of the amplifier following the oscillator back to the oscillator grid. The line may comprise an inductance 116, Fig. 6, shunted by condensers 118 or separate lumped inductances may be used in one or both the leads between each pair of condensers. The inductances may be shielded by a screening member 120. Alternatively the line may comprise concentric tubes with water, oil or sulphur as a dielectric. Specification 342,976 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US369167XA | 1930-12-03 | 1930-12-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB369167A true GB369167A (en) | 1932-03-17 |
Family
ID=21891379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB31587/31A Expired GB369167A (en) | 1930-12-03 | 1931-11-14 | Improvements in or relating to thermionic amplifiers and oscillation generators |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR727534A (en) |
| GB (1) | GB369167A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE762168C (en) * | 1934-11-02 | 1954-08-16 | Aeg | Feedback circuit for generating constant amplitude oscillations over a wide frequency range |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1078635B (en) * | 1938-03-22 | 1960-03-31 | Philips Patentverwaltung | Circuit for the generation or amplification of ultra-high frequency oscillations, in which an oscillating circuit with distributed self-induction and capacitance is switched on in the grid circuit of a discharge tube |
-
1931
- 1931-11-14 GB GB31587/31A patent/GB369167A/en not_active Expired
- 1931-11-17 FR FR727534D patent/FR727534A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE762168C (en) * | 1934-11-02 | 1954-08-16 | Aeg | Feedback circuit for generating constant amplitude oscillations over a wide frequency range |
Also Published As
| Publication number | Publication date |
|---|---|
| FR727534A (en) | 1932-06-20 |
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