GB501114A - Frequency changers of the electron discharge tube type - Google Patents
Frequency changers of the electron discharge tube typeInfo
- Publication number
- GB501114A GB501114A GB19574/38A GB1957438A GB501114A GB 501114 A GB501114 A GB 501114A GB 19574/38 A GB19574/38 A GB 19574/38A GB 1957438 A GB1957438 A GB 1957438A GB 501114 A GB501114 A GB 501114A
- Authority
- GB
- United Kingdom
- Prior art keywords
- frequency
- grid
- parallel
- harmonic
- screen
- 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
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
- H03B19/00—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source
- H03B19/06—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes
- H03B19/08—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes by means of a discharge device
- H03B19/10—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes by means of a discharge device using multiplication only
Landscapes
- Amplifiers (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
501,114. Valve generating and modulating circuits. STANDARD TELEPHONES & CABLES, Ltd. July 1, 1938, No. 19674. Convention date, Aug. 5, 1937. [Class 40 (v)] In a frequency multiplier space current is arranged to flow in the discharge device for a substantial portion, preferably during 180, of each cycle of the base frequency and means are provided to apply to an additional grid the harmonic frequency in phase opposition to the anode voltage. Fig. 2 shows a pentode with the input applied to the control grid and the output circuit 11, 12 tuned to a harmonic. Energy at the multiplied frequency is applied to the screen grid, the steady potential being adjusted by resistance 20 or supplied through a choke. As shown, a modulation voltage may be applied to the suppressor grid. Fig. 3 shows an arrangement for producing odd harmonics in which the screen grids are fed from tappings on the tuned circuit 26, 27. In a modification, even harmonics are produced, Fig. 4 (not shown), in which case the output is taken from the anodes in parallel and the feedback to the screen grids is also in parallel.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US157499A US2162806A (en) | 1937-08-05 | 1937-08-05 | Frequency changer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB501114A true GB501114A (en) | 1939-02-21 |
Family
ID=22563999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19574/38A Expired GB501114A (en) | 1937-08-05 | 1938-07-01 | Frequency changers of the electron discharge tube type |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2162806A (en) |
| FR (1) | FR841648A (en) |
| GB (1) | GB501114A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2536794A (en) * | 1943-03-16 | 1951-01-02 | Gen Electric | Frequency multiplier |
| US2425165A (en) * | 1943-05-15 | 1947-08-05 | Rca Corp | Stabilized harmonic oscillator |
| US2505182A (en) * | 1945-04-12 | 1950-04-25 | George L Haller | Control apparatus |
| US2578613A (en) * | 1947-01-24 | 1951-12-11 | Rca Corp | Second and third harmonic generator |
| US2710345A (en) * | 1951-12-21 | 1955-06-07 | Stephens Robert Lee | Radio link sound pickup |
| US2913670A (en) * | 1957-12-30 | 1959-11-17 | Edwin F Laine | Wide band regenerative frequency divider and multiplier |
| DE1086300B (en) * | 1958-12-17 | 1960-08-04 | Siemens Ag | Circuit arrangement for frequency division and multiplication |
| FR2554994B1 (en) * | 1983-11-15 | 1989-05-26 | Thomson Csf | DEVICE FOR GENERATING A FRACTIONAL FREQUENCY OF A REFERENCE FREQUENCY |
-
1937
- 1937-08-05 US US157499A patent/US2162806A/en not_active Expired - Lifetime
-
1938
- 1938-07-01 GB GB19574/38A patent/GB501114A/en not_active Expired
- 1938-08-02 FR FR841648D patent/FR841648A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR841648A (en) | 1939-05-24 |
| US2162806A (en) | 1939-06-20 |
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