GB341922A - Improvements in and relating to wireless transmitters - Google Patents
Improvements in and relating to wireless transmittersInfo
- Publication number
- GB341922A GB341922A GB3220829A GB3220829A GB341922A GB 341922 A GB341922 A GB 341922A GB 3220829 A GB3220829 A GB 3220829A GB 3220829 A GB3220829 A GB 3220829A GB 341922 A GB341922 A GB 341922A
- Authority
- GB
- United Kingdom
- Prior art keywords
- units
- power units
- push
- pull
- class
- 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
- 239000013078 crystal Substances 0.000 abstract 1
- 230000003472 neutralizing effect Effects 0.000 abstract 1
- 230000010355 oscillation Effects 0.000 abstract 1
- 230000011664 signaling Effects 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
341,922. Valve generating circuits. SALMOND, J. S. C., SHEARING, G., and URE, W., H.M. Signal School, Royal Naval Barracks, Portsmouth. Oct. 23, 1929, No. 32208. [Class 40 (v).] A high-frequency generating system comprises a plurality of controlled push-pull power units F2 .. F5 with means for controlling the phase of any of the units. The units are excited from a push-pull oscillator A, B, controlled by a piezoelectric crystal D, through push-pull amplifiers Q, R, L1, M1, and valves A1 B1 for producing an odd harmonic of the original frequency. The amplifiers L1, M1 are coupled to the power units through condensers A2, B2 and a Lecher wire system G4, G5, by which the phase of the power units can be adjusted. Impedances C3, C4 in series with neutralizing condensers D2, E2, T1, V1 check spurious oscillations. The power units excite separate aerials M3, M4, or a single aerial by symmetrical arrangement (Fig. 3, not shown). Specification 304,382, [Class 40 (v), Wireless signalling &c.], is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3220829A GB341922A (en) | 1929-10-23 | 1929-10-23 | Improvements in and relating to wireless transmitters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3220829A GB341922A (en) | 1929-10-23 | 1929-10-23 | Improvements in and relating to wireless transmitters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB341922A true GB341922A (en) | 1931-01-23 |
Family
ID=10334978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3220829A Expired GB341922A (en) | 1929-10-23 | 1929-10-23 | Improvements in and relating to wireless transmitters |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB341922A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2467778A (en) * | 1944-09-29 | 1949-04-19 | Westinghouse Electric Corp | Tunable coupling network for pushpull amplifiers |
-
1929
- 1929-10-23 GB GB3220829A patent/GB341922A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2467778A (en) * | 1944-09-29 | 1949-04-19 | Westinghouse Electric Corp | Tunable coupling network for pushpull amplifiers |
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