GB140449A - Improvements relating to the production of electric oscillations - Google Patents
Improvements relating to the production of electric oscillationsInfo
- Publication number
- GB140449A GB140449A GB8081/20A GB808120A GB140449A GB 140449 A GB140449 A GB 140449A GB 8081/20 A GB8081/20 A GB 8081/20A GB 808120 A GB808120 A GB 808120A GB 140449 A GB140449 A GB 140449A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit
- electric
- resistance
- amplifier
- fundamental frequency
- 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)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
- Particle Accelerators (AREA)
Abstract
140,449. Western Electric Co., (Assignees of Scriven, E. 0.). June 4, 1917, [Convention date]. Electric oscillations, producing. - A high ohmic resistance 13, Fig. 1, is connected in series with the source of current 10 in the plate circuit of a valve generator G, thereby maintaining the direct current through the valve practically constant in spite of slight variations in the electric constants of the apparatus used, and in parallel with the plate circuit is arranged a circuit of low impedance. In the arrangement shown in Fig. 1, this circuit comprises a condenser 18 and a low resistance 19 connected to the grid circuit of an amplifier A. The resistance 19 may be replaced by an inductance 32, Fig. 2, the impedance of which increases with a rise in frequency, so that harmonics of the fundamental frequency are emphasized in the grid circuit of the amplifier A. The secondary circuit of the transformer 39 has a number of parallel branch circuits tuned respectively to the fundamental frequency and the several harmonics, which can be obtained from the circuits 45, 50, 52, &c.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13953016 US1446752A (en) | 1916-12-29 | 1916-12-29 | Generator and the generation of multiple frequencies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB140449A true GB140449A (en) | 1921-02-24 |
Family
ID=33538662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8081/20A Expired GB140449A (en) | 1916-12-29 | 1920-03-18 | Improvements relating to the production of electric oscillations |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1446752A (en) |
| DE (1) | DE393637C (en) |
| FR (2) | FR508976A (en) |
| GB (1) | GB140449A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2513760A (en) * | 1939-02-02 | 1950-07-04 | Toulon Pierre Marie Gabriel | Generator of multiple voltages at different frequencies |
| US2465407A (en) * | 1943-03-30 | 1949-03-29 | Arthur A Varela | Rectangular wave impulse generator |
| US2475909A (en) * | 1943-08-18 | 1949-07-12 | Morrison Montford | Multiple reactor filter section |
| US2607851A (en) * | 1947-11-18 | 1952-08-19 | Bell Telephone Labor Inc | Mop-up equalizer |
| US2541320A (en) * | 1948-04-23 | 1951-02-13 | Bell Telephone Labor Inc | Multifrequency generator |
| US2868977A (en) * | 1954-12-21 | 1959-01-13 | Hahnel Alwin | Crystal controlled spectrum generator |
| US2897451A (en) * | 1958-02-27 | 1959-07-28 | Robert B Hammett | Multifrequency devices and systems associated therewith |
| US3495158A (en) * | 1968-05-23 | 1970-02-10 | Us Navy | Harmonic generator system |
-
1916
- 1916-12-29 US US13953016 patent/US1446752A/en not_active Expired - Lifetime
-
1919
- 1919-02-13 FR FR508976A patent/FR508976A/en not_active Expired
-
1920
- 1920-02-22 DE DEB92960D patent/DE393637C/en not_active Expired
- 1920-03-08 FR FR22814A patent/FR22814E/en not_active Expired
- 1920-03-18 GB GB8081/20A patent/GB140449A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR22814E (en) | 1921-08-23 |
| FR508976A (en) | 1920-10-28 |
| DE393637C (en) | 1924-04-08 |
| US1446752A (en) | 1923-02-27 |
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