GB430507A - Improvements in wireless receiving sets - Google Patents
Improvements in wireless receiving setsInfo
- Publication number
- GB430507A GB430507A GB44934A GB44934A GB430507A GB 430507 A GB430507 A GB 430507A GB 44934 A GB44934 A GB 44934A GB 44934 A GB44934 A GB 44934A GB 430507 A GB430507 A GB 430507A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- input impedance
- potential
- grid
- 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
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G5/00—Tone control or bandwidth control in amplifiers
- H03G5/16—Automatic control
- H03G5/18—Automatic control in untuned amplifiers
- H03G5/20—Automatic control in untuned amplifiers having discharge tubes
Landscapes
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Abstract
430,507. Valve circuits for wireless reception. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, BLIGH, N. R., and SMYTH, C. N., c /o General Electric Co., Wembley, Middlesex. Jan. 5,1934, No. 449. [Class 40 (v)] The relative response of a receiver to high audio-frequencies is decreased automatically as the carrier strength decreases by varying the input impedance of a valve, said impedance being part of the main transmission path of the signals preceding the final demodulator. As shown the input circuit 15 of a high frequency amplifying valve 5 has the input impedance of a valve 6 connected thereacross. The valve 6 has a load circuit 9 comprising an inductance 10 shunted by a resistance 11 and its input impedance is varied by varying its grid potential, the grid lead 8 being connected to a source of A.V.C. potential which also controls the potential of the grid of valve 5 for gain regulation. As the signal strength rises the input impedance of the valve 6 rises making the circuit 15 more selective and hence reducing the high-note response. The functions of the two valves 5 and 6 may be performed by a single valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB44934A GB430507A (en) | 1934-01-05 | 1934-01-05 | Improvements in wireless receiving sets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB44934A GB430507A (en) | 1934-01-05 | 1934-01-05 | Improvements in wireless receiving sets |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB430507A true GB430507A (en) | 1935-06-20 |
Family
ID=9704535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB44934A Expired GB430507A (en) | 1934-01-05 | 1934-01-05 | Improvements in wireless receiving sets |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB430507A (en) |
-
1934
- 1934-01-05 GB GB44934A patent/GB430507A/en not_active Expired
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