GB428581A - Improvements in or relating to electrical oscillation generators - Google Patents
Improvements in or relating to electrical oscillation generatorsInfo
- Publication number
- GB428581A GB428581A GB28076/34A GB2807634A GB428581A GB 428581 A GB428581 A GB 428581A GB 28076/34 A GB28076/34 A GB 28076/34A GB 2807634 A GB2807634 A GB 2807634A GB 428581 A GB428581 A GB 428581A
- Authority
- GB
- United Kingdom
- Prior art keywords
- grid
- coil
- tapping
- crystal
- point
- 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
- 238000010079 rubber tapping Methods 0.000 abstract 5
- 239000013078 crystal Substances 0.000 abstract 4
- 230000003534 oscillatory effect Effects 0.000 abstract 2
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
428,581. Valve generating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London.-(Assignees of Finch, J. L. ; Patchogue, Long Island, New York, U.S.A.) Oct. 1, 1934, No. 28076. Convention date, Oct. 19, 1933. [Class 40 (v)] A crystal - controlled valve oscillator is arranged to generate an harmonic of the crystal frequency by including the crystal 16 in series in the feed-back connection 30 from the plate coil 14 to the tuned grid circuit 38 which latter is tuned to the desired harmonic. The plate coil tapping 32 is at a point of low oscillatory potential, and the grid coil tapping 36 is also at a point of low oscillatory potential opposite to that of the grid, on account of the intermediate connection to the cathode. The crystal electrode-capacity is balanced by the capacity 15. The screen-grid is kept at earth potential by a condenser 12, which may with the inductance of the screen-grid lead constitute an acceptor circuit for the desired harmonic. The plate tapping may be at a point beyond the cathode connection of the coil 14, and the grid tapping at a point on the grid side of the coil 38 (Fig. 2 not shown). The grid coil tapping may be omitted and the lead 30 may include a coil inductively coupled to the coil 38, an electrostatic screen being interposed (Fig. 3 not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US428581XA | 1933-10-19 | 1933-10-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB428581A true GB428581A (en) | 1935-05-15 |
Family
ID=21924109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB28076/34A Expired GB428581A (en) | 1933-10-19 | 1934-10-01 | Improvements in or relating to electrical oscillation generators |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB428581A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2506762A (en) * | 1943-05-28 | 1950-05-09 | Rauland Corp | Piezoelectric crystal oscillator |
| US3210685A (en) * | 1962-04-25 | 1965-10-05 | Bell Telephone Labor Inc | Cross-coupled crystal-controlled square wave oscillator |
-
1934
- 1934-10-01 GB GB28076/34A patent/GB428581A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2506762A (en) * | 1943-05-28 | 1950-05-09 | Rauland Corp | Piezoelectric crystal oscillator |
| US3210685A (en) * | 1962-04-25 | 1965-10-05 | Bell Telephone Labor Inc | Cross-coupled crystal-controlled square wave oscillator |
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