GB506109A - Improvements in or relating to carrier wave modulating circuit arrangements - Google Patents
Improvements in or relating to carrier wave modulating circuit arrangementsInfo
- Publication number
- GB506109A GB506109A GB19613/38A GB1961338A GB506109A GB 506109 A GB506109 A GB 506109A GB 19613/38 A GB19613/38 A GB 19613/38A GB 1961338 A GB1961338 A GB 1961338A GB 506109 A GB506109 A GB 506109A
- Authority
- GB
- United Kingdom
- Prior art keywords
- grids
- output
- valve
- july
- pull
- 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
- H03C1/52—Modulators in which carrier or one sideband is wholly or partially suppressed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/10—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Amplitude Modulation (AREA)
Abstract
506,109. Valve modulating circuits. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. July 1, 1938, No. 19613. ,Convention date, July 3, 1937. [Class 40 (v)] A modulation circuit arrangement comprises two valves with at least three grids, the carrier frequency being applied between the cathodes and control grids 1, 1a in parallel, while the modulating frequency is applied to the distribution grids 3, 3a, in push-pull. Modulated output is taken off, by means of the push-pull or divided primary transformer T, from the anodes and positively biassed grids 2, 2a the output circuits of each valve being cross-connected in parallel.' The degree of carrier suppression obtained in the output is controlled by the bias of grids 3, 3a. This circuit has the advantage over a single valve arrangement that each half of the output transformer is loaded with both a screen grid and an anode, and differences in their internal impedances do not produce unequal loading of the two halves. The ends of the output transformer may be connected to another positively biassed grid located between grids 2 and 3 in each valve. Specification 491,805 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE506109X | 1937-07-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB506109A true GB506109A (en) | 1939-05-23 |
Family
ID=6546492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19613/38A Expired GB506109A (en) | 1937-07-03 | 1938-07-01 | Improvements in or relating to carrier wave modulating circuit arrangements |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR840119A (en) |
| GB (1) | GB506109A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE516986A (en) * | 1952-04-30 | |||
| DE1262372B (en) * | 1964-02-06 | 1968-03-07 | Rohde & Schwarz | Modulator for electromagnetic oscillations |
-
1938
- 1938-07-01 FR FR840119D patent/FR840119A/en not_active Expired
- 1938-07-01 GB GB19613/38A patent/GB506109A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR840119A (en) | 1939-04-19 |
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