GB364658A - Improvements in or relating to oscillation generators - Google Patents
Improvements in or relating to oscillation generatorsInfo
- Publication number
- GB364658A GB364658A GB2715230A GB2715230A GB364658A GB 364658 A GB364658 A GB 364658A GB 2715230 A GB2715230 A GB 2715230A GB 2715230 A GB2715230 A GB 2715230A GB 364658 A GB364658 A GB 364658A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- frequency
- cycles
- oscillation
- crystal
- 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 6
- 239000013078 crystal Substances 0.000 abstract 3
- 230000003321 amplification Effects 0.000 abstract 1
- 238000003199 nucleic acid amplification method 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
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Oscillators With Electromechanical Resonators (AREA)
Abstract
364,658. Valve generating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London. -(Albersheim, W.; 175, .Riverside Drive, New York, U.S.A.) Sept. 11, 1930, No. 27152. [Class 40 (v).] Oscillations of low frequency are stabilized by the use of a piezo-crystal or like vibrator operating, at a higher frequency, an harmonic' of the low-frequency oscillations being modulated by a crystal-controlled oscillator, and the resulting difference frequency fed back to maintain the low-frequency oscillation. For example, a valve 10 oscillating at 20000 cycles feeds an harmonic producer 13 the plate circuit of which is tuned to 80000 cycles. This oscillation after amplification by the valve 17 is combined with an oscillation of 100,000 cycles produced by the valve 19 under the control of a crystal 20. The difference frequency of 20000 cycles resulting from this combination is fed back from the valve 19 to the valve 10, and the strength of the feed back is such that valve 10 is forced to oscillate at the difference frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2715230A GB364658A (en) | 1930-09-11 | 1930-09-11 | Improvements in or relating to oscillation generators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2715230A GB364658A (en) | 1930-09-11 | 1930-09-11 | Improvements in or relating to oscillation generators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB364658A true GB364658A (en) | 1932-01-11 |
Family
ID=10255053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2715230A Expired GB364658A (en) | 1930-09-11 | 1930-09-11 | Improvements in or relating to oscillation generators |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB364658A (en) |
-
1930
- 1930-09-11 GB GB2715230A patent/GB364658A/en not_active Expired
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