GB420830A - Improvements in or relating to thermionic oscillation generators - Google Patents
Improvements in or relating to thermionic oscillation generatorsInfo
- Publication number
- GB420830A GB420830A GB1648633A GB1648633A GB420830A GB 420830 A GB420830 A GB 420830A GB 1648633 A GB1648633 A GB 1648633A GB 1648633 A GB1648633 A GB 1648633A GB 420830 A GB420830 A GB 420830A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit
- grid
- anode
- cathode
- condenser
- 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 abstract 2
- 239000013078 crystal Substances 0.000 abstract 3
- 101000619542 Homo sapiens E3 ubiquitin-protein ligase parkin Proteins 0.000 abstract 1
- 102000045222 parkin Human genes 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
- H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
- H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
- H03B5/34—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being vacuum tube
Landscapes
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
420,830. Valve generating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London, and PARKIN, T. D., The Haven, Mill Lane, Broomfield, near Chelmsford, Essex. June 8, 1933, No. 16486. [Class 40 (v)] A valve generator 1 having a tuned circuit LC in its anode-cathode circuit, a piezo-electric crystal X4, of resonant frequency substantially different from that of the circuit LC, in its anode-grid circuit, and a resistance R1 in its grid-cathode circuit, has its effective gridcathode capacity reduced by a condenser C3 connected between the grid and cathode. This increases the amplitude of the oscillations produced across the tuned circuit LC and is particularly useful when the crystal X4 is one of a plurality capable of being inserted in the anode-grid circuit. The selecting switch S short-circuits the unused crystals with a condenser CD.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1648633A GB420830A (en) | 1933-06-08 | 1933-06-08 | Improvements in or relating to thermionic oscillation generators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1648633A GB420830A (en) | 1933-06-08 | 1933-06-08 | Improvements in or relating to thermionic oscillation generators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB420830A true GB420830A (en) | 1934-12-10 |
Family
ID=10078218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1648633A Expired GB420830A (en) | 1933-06-08 | 1933-06-08 | Improvements in or relating to thermionic oscillation generators |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB420830A (en) |
-
1933
- 1933-06-08 GB GB1648633A patent/GB420830A/en not_active Expired
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