GB281633A - Improvements in or relating to electrical amplification systems - Google Patents
Improvements in or relating to electrical amplification systemsInfo
- Publication number
- GB281633A GB281633A GB30714/27A GB3071427A GB281633A GB 281633 A GB281633 A GB 281633A GB 30714/27 A GB30714/27 A GB 30714/27A GB 3071427 A GB3071427 A GB 3071427A GB 281633 A GB281633 A GB 281633A
- Authority
- GB
- United Kingdom
- Prior art keywords
- condenser
- frequency
- primary
- frequencies
- transformer
- 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
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/163—Special arrangements for the reduction of the damping of resonant circuits of receivers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J3/00—Continuous tuning
- H03J3/02—Details
- H03J3/06—Arrangements for obtaining constant bandwidth or gain throughout tuning range or ranges
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
- Microwave Amplifiers (AREA)
Abstract
281,633. Westinghouse Electric & Manufacturing Co., (Assignees of Beers, G. L.). Nov. 30, 1926, [Convention date]. Thermionic amplifiers.-In order to obtain a straight-line selectivity characteristic in a highfrequency amplifier, the inter-valve coupling comprises a transformer having a primary with a natural frequency lower than the mid-range frequency of the system, and preferably lower than the lowest frequency the system is intended to amplify. The transformer primary is a multilayer coil 40, Fig. 2, and the secondary a singlelayer solenoid 41. The inductance of the primary 12, Fig. 1, is such that at the higher frequencies for which the system is designed, the reactance is capacitative, thus tending to cause negative feed-back at such frequencies. A certain amount of positive feed-back is ensured by the use of a condenser 11, which at the lower frequencies acts . as a neutralizing condenser in known manner. The condenser 11 thus has the double function of balancing both the positive and negative feedback, depending upon the frequency to which the system is tuned. Specification 147,147 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US151722A US1907478A (en) | 1926-11-30 | 1926-11-30 | Amplification system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB281633A true GB281633A (en) | 1928-06-14 |
Family
ID=22539981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30714/27A Expired GB281633A (en) | 1926-11-30 | 1927-11-15 | Improvements in or relating to electrical amplification systems |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US1907478A (en) |
| GB (1) | GB281633A (en) |
| NL (1) | NL24590C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3125285A (en) * | 1964-03-17 | Safety device for refrigeration compressors |
-
0
- NL NL24590D patent/NL24590C/xx active
-
1926
- 1926-11-30 US US151722A patent/US1907478A/en not_active Expired - Lifetime
-
1927
- 1927-11-15 GB GB30714/27A patent/GB281633A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL24590C (en) | |
| US1907478A (en) | 1933-05-09 |
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