GB399716A - Improvements in or relating to thermionic oscillation generators - Google Patents
Improvements in or relating to thermionic oscillation generatorsInfo
- Publication number
- GB399716A GB399716A GB6931/33A GB693133A GB399716A GB 399716 A GB399716 A GB 399716A GB 6931/33 A GB6931/33 A GB 6931/33A GB 693133 A GB693133 A GB 693133A GB 399716 A GB399716 A GB 399716A
- Authority
- GB
- United Kingdom
- Prior art keywords
- condenser
- grid
- crystal
- march
- series
- 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
- 230000003412 degenerative effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000003472 neutralizing effect Effects 0.000 abstract 1
- 238000010079 rubber tapping Methods 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
- Oscillators With Electromechanical Resonators (AREA)
Abstract
399,716. Valve generating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London.- (Assignees of Goldstine, H. E. and Conklin, J. W. ; Rocky Point, New York, U.S.A.) March 7, 1933, No. 6931. Convention date, March 9, 1932. [Class 40 (v).] In a thermionic generator comprising a back-coupled valve 16, Fig. 1, whose input circuit includes a parallel tuned circuit 8 in series with a piezo-electric crystal 6, the capacitive reactance of the crystal and its electrodes is compensated, preferably by a condenser 14 in parallel with the crystal and in series with the tuned circuit 8. Preferably the circuit is made slightly degenerative by over compensation. A low impedance, comprising a resistance 30 and a condenser 32, in shunt with the grid leak 28, prevents generation of spurious oscillations through its bypassing effect. In a modification, the cathode is connected to the junction of condensers 13, 15, Fig. 2, instead of to a tapping on the inductance 10, Fig. 1, and the compensating condenser 14 may be eliminated, the neutralizing connection being made to an intermediate point on the grid tuning condenser. The compensating condenser 14 may be connected between the grid and a coil coupled to either the plate or grid coils 18, 10. Specification 401,563 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US399716XA | 1932-03-09 | 1932-03-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB399716A true GB399716A (en) | 1933-10-12 |
Family
ID=21908373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6931/33A Expired GB399716A (en) | 1932-03-09 | 1933-03-07 | Improvements in or relating to thermionic oscillation generators |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB399716A (en) |
-
1933
- 1933-03-07 GB GB6931/33A patent/GB399716A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB502830A (en) | Improvements in or relating to deflecting circuits for cathode ray tubes | |
| GB603437A (en) | Improvements in or relating to frequency discriminator circuits | |
| GB367978A (en) | Improvements in or relating to methods and means for generating electrical oscillations | |
| GB399716A (en) | Improvements in or relating to thermionic oscillation generators | |
| GB415804A (en) | Improvements in or relating to thermionic oscillation generators | |
| US1650250A (en) | Two-way circuit arrangement for wireless telephony | |
| GB428581A (en) | Improvements in or relating to electrical oscillation generators | |
| GB415716A (en) | Improvements in or relating to thermionic oscillation generators | |
| US1784857A (en) | Electron-tube circuits | |
| US2676258A (en) | Harmonic crystal oscillator | |
| GB463625A (en) | Improvements in or relating to electrical oscillation generators | |
| GB348941A (en) | Improvements in thermionic generators | |
| GB380144A (en) | Improvements in and relating to thermionic valves and circuits for the generation, modulation and controlling of electric oscillations | |
| US2379201A (en) | Timing modulation | |
| GB413335A (en) | Improvements in or relating to electrical oscillating systems | |
| GB413973A (en) | Improvements in or relating to short wave thermionic valve transmitter arrangements | |
| GB462329A (en) | Improvements in or relating to thermionic oscillation generators | |
| GB452583A (en) | Improvements in or relating to electron discharge device oscillators | |
| GB437671A (en) | Improvements in or relating to thermionic oscillation generators | |
| GB412154A (en) | Improvements in or relating to electron discharge device oscillation generators | |
| GB414836A (en) | Improvements in or relating to thermionic oscillation-generators and the like | |
| GB382316A (en) | Improvements in thermionic generators | |
| GB383546A (en) | Improvements in or relating to electrical oscillation generators | |
| US1710235A (en) | Radio transmitting circuit | |
| GB481064A (en) | Improvements in or relating to demodulating circuit arrangements for phase modulated waves |