GB435561A - Radio transmission arrangement, more particularly for short or ultra-short wave purposes - Google Patents
Radio transmission arrangement, more particularly for short or ultra-short wave purposesInfo
- Publication number
- GB435561A GB435561A GB9250/34A GB925034A GB435561A GB 435561 A GB435561 A GB 435561A GB 9250/34 A GB9250/34 A GB 9250/34A GB 925034 A GB925034 A GB 925034A GB 435561 A GB435561 A GB 435561A
- Authority
- GB
- United Kingdom
- Prior art keywords
- grid
- circuit
- voltage
- short
- 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
- H03C—MODULATION
- H03C1/00—Amplitude modulation
- H03C1/16—Amplitude modulation by means of discharge device having at least three electrodes
- H03C1/18—Amplitude modulation by means of discharge device having at least three electrodes carrier applied to control grid
- H03C1/24—Amplitude modulation by means of discharge device having at least three electrodes carrier applied to control grid modulating signal applied to different grid
Landscapes
- Transmitters (AREA)
- Microwave Amplifiers (AREA)
Abstract
435,561. Valve generating and modulating circuits. RADIOAKT.-GES., D. S. LOEWE, 10, Wiesenweg, Steglitz, Berlin. March 24, 1934, No. 9250. Convention date, March 29, 1933. [Class 40 (v)] A frequency-doubling valve 1 has a fundamental wave from a source 9 applied in pushpull to two input grids 2, 3 of equal control on the electron stream, thus creating a wave of double frequency in the plate circuit, and modulating voltage is applied to an outer or screening grid 4. The input grids 2, 3 are connected to opposite ends of a circuit 8, 10 tuned to the frequency of the source 9 and connected through earth to the cathode at its mid-point. The input grids are biassed by a battery 11 so that only positive impulses affect the plate current. The output circuit 14 is tuned to double the frequency of the source 9 and may be coupled to an amplifier 26. Modulation voltage applied at terminals 17, 18 reaches the screen grid 4 through a choke 19 and condenser 20; and the positive voltage on the grid 4 is maintained by a.tapping on the potentiometer 23. A suppressor grid may be interposed between the grid 4 and anode 5 ; or if the circuit is operated so that the screen voltage never rises above the plate voltage, the suppressor grid may be omitted. The circuit is intended for use with short or ultra-short waves.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE435561X | 1933-03-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB435561A true GB435561A (en) | 1935-09-24 |
Family
ID=6506785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9250/34A Expired GB435561A (en) | 1933-03-29 | 1934-03-24 | Radio transmission arrangement, more particularly for short or ultra-short wave purposes |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2063196A (en) |
| FR (1) | FR770626A (en) |
| GB (1) | GB435561A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2515916A (en) * | 1950-07-18 | Coded carrier signaling apparatus | ||
| DE754789C (en) * | 1935-04-30 | 1954-12-13 | Opta Radio A G | Modulation circuit |
| DE763241C (en) * | 1935-04-30 | 1955-08-11 | Opta Radio A G | Modulation circuit for shortwave television transmitters with synchronization by suppressing the carrier shaft (gap synchronization) |
-
1934
- 1934-03-24 FR FR770626D patent/FR770626A/en not_active Expired
- 1934-03-24 GB GB9250/34A patent/GB435561A/en not_active Expired
- 1934-03-26 US US717309A patent/US2063196A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2063196A (en) | 1936-12-08 |
| FR770626A (en) | 1934-09-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB445558A (en) | Improvements in or relating to thermionic valve circuit arrangements | |
| GB435561A (en) | Radio transmission arrangement, more particularly for short or ultra-short wave purposes | |
| US2223430A (en) | Modulation system | |
| GB543550A (en) | Improvements in frequency multiplier valve circuit arrangements | |
| GB467915A (en) | Improvements in or relating to electron discharge devices and to circuits therefor | |
| GB783124A (en) | Improvements in or relating to electron discharge device circuit arrangements | |
| GB426855A (en) | Modulation system for high frequency wireless transmission | |
| GB437804A (en) | Improvements in or relating to thermionic valves for use in radio signalling systems | |
| GB392425A (en) | Improvements in or relating to very short wave electrical oscillation generating arrangements | |
| GB450057A (en) | Television radio transmitter | |
| GB515271A (en) | Circuit arrangements and thermionic valves for amplifying electrical oscillations | |
| GB471306A (en) | Improvements in and relating to thermionic valve circuits | |
| GB399074A (en) | Improvements in or relating to modulated carrier wave transmitters | |
| GB413973A (en) | Improvements in or relating to short wave thermionic valve transmitter arrangements | |
| GB707644A (en) | Improvements in or relating to tuned thermionic valve amplifiers | |
| GB335615A (en) | Improvements in or relating to picture and like telegraph systems and apparatus for use therein | |
| GB473042A (en) | Multi-element electron discharge apparatus and systems | |
| GB453852A (en) | Improvements in or relating to thermionic valve oscillator arrangements | |
| GB424470A (en) | Improvements in or relating to modulating and keying systems for radio and like transmitters | |
| GB361351A (en) | Improvements in thermionic valve circuits as applied to radiotelephonic systems and apparatus | |
| GB556852A (en) | A improved frequency-modulated oscillation generator | |
| GB514286A (en) | Improvements in or relating to electric oscillation generators | |
| GB464768A (en) | Improvements in or relating to modulating systems for wireless apparatus | |
| GB267941A (en) | Improvements in or relating to thermionic valves and circuits therefor | |
| GB651478A (en) | Improvements in or relating to thermionic valve circuits for deriving two equal voltages of opposite phase |