GB345931A - Improvements in thermionic valve signal receiving systems - Google Patents
Improvements in thermionic valve signal receiving systemsInfo
- Publication number
- GB345931A GB345931A GB31892/29A GB3189229A GB345931A GB 345931 A GB345931 A GB 345931A GB 31892/29 A GB31892/29 A GB 31892/29A GB 3189229 A GB3189229 A GB 3189229A GB 345931 A GB345931 A GB 345931A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- resistance
- variable
- amplifying
- circuits
- 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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B15/00—Suppression or limitation of noise or interference
- H04B15/005—Reducing noise, e.g. humm, from the supply
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
- Devices For Medical Bathing And Washing (AREA)
- Amplifiers (AREA)
Abstract
345,931. Valve amplifying and detecting circuits. HAYDEN, H. R., 1001, Ocean Avenue, Brooklyn, New York, U.S.A. Oct. 21, 1929, No. 31892. Convention date, March 19. [Class 40 (v).] In a multistage thermionic valve receiver in which the valve cathodes are heated by alternating current disturbances are reduced by arranging the couplings so that the disturbances in one valve circuit are cancelled by those in the next. The Figure shows high-frequency amplifying valves 16, 34 stabilized bv resistances 30, 42 and biased by resistance 109. The detector 47 is indirectly heated and biased by resistance 120 and provided with a variable grid condenser and a variable grid leak. The lowfrequency amplifiers are resistance coupled and variable resistance 93 is provided in shunt to the grid leak of the last valve to vary the volume in the loud-speaker 90. High-frequency chokes 58, 59, 60 are provided in the detector and highfrequency amplifying valve circuits and variable resistances 170 are provided in the filament and heater circuits to allow a balancing of the current to reduce hum. Specification 326,859, [Class 40 (v), Wireless signalling &c.], is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US348279A US1921226A (en) | 1929-03-19 | 1929-03-19 | Signal receiving system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB345931A true GB345931A (en) | 1931-03-23 |
Family
ID=23367343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB31892/29A Expired GB345931A (en) | 1929-03-19 | 1929-10-21 | Improvements in thermionic valve signal receiving systems |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1921226A (en) |
| GB (1) | GB345931A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109889167B (en) * | 2019-03-01 | 2023-09-12 | 陈东平 | Direct-heating type electronic tube alternating-current lighting bottom noise control method and device |
-
1929
- 1929-03-19 US US348279A patent/US1921226A/en not_active Expired - Lifetime
- 1929-10-21 GB GB31892/29A patent/GB345931A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1921226A (en) | 1933-08-08 |
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