GB464768A - Improvements in or relating to modulating systems for wireless apparatus - Google Patents
Improvements in or relating to modulating systems for wireless apparatusInfo
- Publication number
- GB464768A GB464768A GB29193/35A GB2919335A GB464768A GB 464768 A GB464768 A GB 464768A GB 29193/35 A GB29193/35 A GB 29193/35A GB 2919335 A GB2919335 A GB 2919335A GB 464768 A GB464768 A GB 464768A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit
- grid
- valve
- microphone
- shunt
- 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
Landscapes
- Transmitters (AREA)
Abstract
464,768. Valve modulating circuits. SCHUCHTER, K. Oct. 23, 1935, No. 29193. Convention date, Sept. 12. [Class 40 (v)] To increase signal range, the carrier oscillations produced by the back-coupled valve 1, Fig. 1, are modulated twice by the same signal, which is applied first from a microphone 8 to the grid, and then, after amplification, as a variable load on the main oscillatory circuit 4, 5. The low-frequency components resulting from the grid modulation are transferred at 11 to a shunt-circuit coil 13, which is in series with a rectifier 12 and is coupled to the coil 5 and variably damps the circuit 4, 5, by absorption. In Fig. 2, switches 14, 15, 16 enable the valve 1 to be used either for transmission or reception. Alternatively the microphone voltage may be applied to one of the grids of a tetrode valve, the other grid being connected to the main oscillatory circuit. The first modulation may also be applied as a variable load to the main oscillatory circuit, instead of coupling the microphone directly to the grid. The second modulating circuit may be directly connected in shunt to the circuit 4, 5.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT464768X | 1935-09-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB464768A true GB464768A (en) | 1937-04-23 |
Family
ID=3674640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29193/35A Expired GB464768A (en) | 1935-09-12 | 1935-10-23 | Improvements in or relating to modulating systems for wireless apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB464768A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10422457B2 (en) | 2016-04-14 | 2019-09-24 | Medtronic Xomed, Inc. | Swivel knuckle connection |
-
1935
- 1935-10-23 GB GB29193/35A patent/GB464768A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10422457B2 (en) | 2016-04-14 | 2019-09-24 | Medtronic Xomed, Inc. | Swivel knuckle connection |
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