GB309508A - Improvements relating to thermionic valve amplifying systems - Google Patents
Improvements relating to thermionic valve amplifying systemsInfo
- Publication number
- GB309508A GB309508A GB11226/29A GB1122629A GB309508A GB 309508 A GB309508 A GB 309508A GB 11226/29 A GB11226/29 A GB 11226/29A GB 1122629 A GB1122629 A GB 1122629A GB 309508 A GB309508 A GB 309508A
- Authority
- GB
- United Kingdom
- Prior art keywords
- amplifier
- grid
- point
- oscillation circuit
- circuit
- 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 abstract 6
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
- H03F1/14—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of neutralising means
- H03F1/16—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of neutralising means in discharge-tube amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/06—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes
- H03D7/08—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes the signals to be mixed being applied between the same two electrodes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
Abstract
309,508. British Thomson-Houston Co., Ltd., (Assignees of Andrews, P. D.). April 11, 1928, [Convention date]. Thermionic oscillators.-A thermionic valve circuit includes an amplifying valve 2 having its input circuit supplied with oscillations from an oscillating valve 1 and a coupling through a capacity 21 from the output circuit of the amplifier to a point 22 on the oscillation circuit of the generator to prevent the amplifier generating oscillations. The point should have a potential 180‹ out of phase with the potential supplied to the grid 19 of the amplifier. The oscillation circuit comprises an inductance 6 and a plurality of series-connected capacities 3, 4, 5 between the grid 7 and anode 8 of the oscillator, and connections are made from the grid 19 of the amplifier to a point on the oscillation circuit separated from the point 22 by the pair of capacities 4, 5. According to a modification the connections shown of the grid and anode of the amplifier to the oscillation circuit are reversed to eliminate the coupling-condenser 20 in the grid connection (Fig. 2, not shown)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US269147A US1817795A (en) | 1928-04-11 | 1928-04-11 | Amplifying system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB309508A true GB309508A (en) | 1930-09-11 |
Family
ID=23025997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB11226/29A Expired GB309508A (en) | 1928-04-11 | 1929-04-11 | Improvements relating to thermionic valve amplifying systems |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1817795A (en) |
| BE (1) | BE359760A (en) |
| FR (3) | FR671308A (en) |
| GB (1) | GB309508A (en) |
-
0
- BE BE359760D patent/BE359760A/xx unknown
-
1928
- 1928-04-11 US US269147A patent/US1817795A/en not_active Expired - Lifetime
-
1929
- 1929-03-12 FR FR671308D patent/FR671308A/en not_active Expired
- 1929-03-27 FR FR36816D patent/FR36816E/en not_active Expired
- 1929-04-11 GB GB11226/29A patent/GB309508A/en not_active Expired
- 1929-06-01 FR FR37094D patent/FR37094E/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR671308A (en) | 1929-12-11 |
| FR36816E (en) | 1930-09-20 |
| US1817795A (en) | 1931-08-04 |
| BE359760A (en) | |
| FR37094E (en) | 1930-10-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2266668A (en) | Undamped wave generator | |
| US2013806A (en) | Frequency multiplier | |
| US2051936A (en) | Oscillation generator | |
| US2792498A (en) | Stabilized two-stage oscillators | |
| GB651220A (en) | Improvements in circuits for modulating or interrupting radio frequency oscillations | |
| US2048723A (en) | Thermionic oscillation generator | |
| GB309508A (en) | Improvements relating to thermionic valve amplifying systems | |
| GB483890A (en) | Improvements in or relating to circuits for multiplying or dividing the frequency of high frequency and ultra-high frequency oscillations | |
| US2570840A (en) | Radio-frequency oscillator organization | |
| US2353204A (en) | Wave length modulation | |
| US2675476A (en) | Oscillator | |
| US2124595A (en) | Oscillation system | |
| US2543067A (en) | Oscillator converter | |
| US2329069A (en) | Space discharge type harmonic generator | |
| US1893605A (en) | Transmitter arrangement | |
| US2318979A (en) | Frequency modulator | |
| GB373632A (en) | Improvements in or relating to thermionic oscillation generators | |
| US2067365A (en) | Oscillatory circuit | |
| GB246892A (en) | Improvements in and relating to thermionic oscillation generators | |
| US2223416A (en) | Balanced radio frequency circuit | |
| US1788560A (en) | Wave generating and modulating system | |
| GB528105A (en) | Improvements in or relating to electrical oscillation generators | |
| GB488508A (en) | Improvements in and relating to thermionic oscillation generators | |
| US1739165A (en) | Piezo-electric crystal circuits | |
| GB352357A (en) | Improvements in and relating to high frequency signalling systems |