GB477303A - Improvements in amplification control for radio receivers - Google Patents
Improvements in amplification control for radio receiversInfo
- Publication number
- GB477303A GB477303A GB826936A GB826936A GB477303A GB 477303 A GB477303 A GB 477303A GB 826936 A GB826936 A GB 826936A GB 826936 A GB826936 A GB 826936A GB 477303 A GB477303 A GB 477303A
- Authority
- GB
- United Kingdom
- Prior art keywords
- amplifier
- fed
- rectifier
- controls
- stages
- 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
- 230000003321 amplification Effects 0.000 title abstract 2
- 238000003199 nucleic acid amplification method Methods 0.000 title abstract 2
- 239000011800 void material Substances 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G1/00—Details of arrangements for controlling amplification
- H03G1/04—Modifications of control circuit to reduce distortion caused by control
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/22—Automatic control in amplifiers having discharge tubes
Landscapes
- Circuits Of Receivers In General (AREA)
- Control Of Amplification And Gain Control (AREA)
Abstract
477,303. Valve circuits for wireless reception. HAZELTINE CORPORATION. March 19, 1936, No. 8269. Void. Convention date, April 23, 1935. [Class 40 (v)] Two independent systems of automatic volume control are provided in a receiver and fed from points of differing selectivity. In one embodiment, Fig. 1, one A.V.C. rectifier 17, is fed through a broad band amplifier 16 from the input circuit of the narrow band signal amplifier 12, and controls one or more stages of the latter, at a point 19. A second A.V.C. rectifier 22 is fed from the output of the amplifier 12, and controls another stage or stages of the latter at a point 24. In a second embodiment, Fig. 2, a superheterodyne receiver comprises a radio frequency amplifier 30 and selective I.F. amplifier 31, the first A.V.C. rectifier 36 being fed through a broad band amplifier 35 from the input of the amplifier 31 and controlling the amplifier 30. The second A.V.C. rectifier 41 is fed from the output of the amplifier 31 and controls the amplification of the latter. Circuit details of the embodiment of Fig. 2, are described, Fig. 5 (not shown). British Specifications 293,462, [Class 40 (v)], and 438,797 and U.S.A. Specification 1,921,088 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US755771XA | 1935-04-23 | 1935-04-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB477303A true GB477303A (en) | 1937-12-23 |
Family
ID=22126667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB826936A Expired GB477303A (en) | 1935-04-23 | 1936-03-19 | Improvements in amplification control for radio receivers |
Country Status (4)
| Country | Link |
|---|---|
| AT (1) | AT153327B (en) |
| DE (1) | DE755771C (en) |
| FR (1) | FR805679A (en) |
| GB (1) | GB477303A (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE579666C (en) * | 1929-09-12 | 1933-06-30 | Electrical Res Prod Inc | Process for reducing the disruptive effect, in particular of pipe noise, in cascade amplifiers |
| GB377307A (en) * | 1931-03-28 | 1932-07-28 | Marconi Wireless Telegraph Co | Improvements in or relating to automatic gain control devices for use in high frequency receivers |
| AT138518B (en) * | 1932-08-25 | 1934-08-10 | Rca Corp | Radio receiver with selective automatic intensity control. |
| AT140018B (en) * | 1932-12-22 | 1934-12-27 | Rca Corp | Radio receiver with automatic intensity or volume control and noise suppression. |
| DE671169C (en) * | 1933-09-30 | 1939-02-02 | Rca Corp | Receiver with simultaneous shrinkage and severity control |
| DE673988C (en) * | 1935-03-16 | 1939-04-01 | Emi Ltd | Multi-circuit receiver with automatic shrinkage control |
-
1936
- 1936-03-19 GB GB826936A patent/GB477303A/en not_active Expired
- 1936-04-20 AT AT153327D patent/AT153327B/en active
- 1936-04-22 DE DEH147355D patent/DE755771C/en not_active Expired
- 1936-04-22 FR FR805679D patent/FR805679A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR805679A (en) | 1936-11-26 |
| AT153327B (en) | 1938-05-10 |
| DE755771C (en) | 1953-05-26 |
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