GB575188A - Improvements in and relating to noise balancing circuits for signal translating systems - Google Patents
Improvements in and relating to noise balancing circuits for signal translating systemsInfo
- Publication number
- GB575188A GB575188A GB17624/43A GB1762443A GB575188A GB 575188 A GB575188 A GB 575188A GB 17624/43 A GB17624/43 A GB 17624/43A GB 1762443 A GB1762443 A GB 1762443A GB 575188 A GB575188 A GB 575188A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resistance
- condenser
- noise
- signal
- resistances
- 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
- H03G11/00—Limiting amplitude; Limiting rate of change of amplitude ; Clipping in general
- H03G11/04—Limiting level dependent on strength of signal; Limiting level dependent on strength of carrier on which signal is modulated
Landscapes
- Noise Elimination (AREA)
Abstract
575,188. Wireless receiving circuits. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 26, 1943, No. 17624. Convention date, Oct. 31, 1942. [Class 40 (v)] In a noise-reducing system for a signalmodulated carrier-wave receiver, signal-modulated waves are fed from the tuned secondary 15 to the cathodes 19, 20 of a double diode 11. The signal anode 17 has a load resistance 22 ,and H.F. byepass condenser 23. The noise anode 18 feeds a load circuit comprising a resistance 24 and audio byepass condenser 26 in series with a resistance 25 and H.F. byepass condenser 27, the common point of the resistances being earthed. The resistance-capacity combinations 22, 23 and 25, 27 are identical, but resistance 24 is about 100 times as large as resistances 22, 25, and condenser 26 is large compared with condensers 23 and 27. The audio frequency signal is taken from leads 12, that is across anode 17 and earth, and includes the voltages across resistances 22 and 25 in series but of opposed polarity. For normal signals, since resistance 25 is only one hundredth of resistance 24, only one per cent of the audio frequency signal voltage appears across resistance 25; and so 99 per cent of the signal appears across leads 12. Noise impulses, however, are completely byepassed by large condenser 26 and appear across resistance 25 with the same magnitude as across resistance 23, but of opposite polarity, and so do not appear in the output.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US575188XA | 1942-10-31 | 1942-10-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB575188A true GB575188A (en) | 1946-02-07 |
Family
ID=22011070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB17624/43A Expired GB575188A (en) | 1942-10-31 | 1943-10-26 | Improvements in and relating to noise balancing circuits for signal translating systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB575188A (en) |
-
1943
- 1943-10-26 GB GB17624/43A patent/GB575188A/en not_active Expired
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