GB677260A - Improvements in thermionic amplifiers of the band pass type - Google Patents
Improvements in thermionic amplifiers of the band pass typeInfo
- Publication number
- GB677260A GB677260A GB26975/49A GB2697549A GB677260A GB 677260 A GB677260 A GB 677260A GB 26975/49 A GB26975/49 A GB 26975/49A GB 2697549 A GB2697549 A GB 2697549A GB 677260 A GB677260 A GB 677260A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuits
- damping
- stages
- primary
- impedances
- 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
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/0153—Electrical filters; Controlling thereof
- H03H7/0161—Bandpass filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/42—Modifications of amplifiers to extend the bandwidth
- H03F1/48—Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers
- H03F1/50—Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers with tubes only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Electron Tubes For Measurement (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
677,260. Valve amplifying circuits. DUMONT LABORATORIES, Inc., A. B. Oct. 20, 1949 [Dec. 17, 1948], No. 26975/49. Classes 40 (v) and 40 (vi). In an amplifier comprising three or more stages coupled by pairs of tuned circuits 16, 17, 18 respectively, damping impedances 21, 22, 23 are so disposed as to minimize change in the frequency response when the grid bias is varied; according to the invention the number of damping impedances connected across primary circuits differs from the number put across secondaries, while the ratio of the product of the damping factors of the primary circuits to the corresponding product for the secondaries is made unity. As shown, the circuits are tuned by the valve capacities and two damping impedances 21, 22 are connected across primary circuits and one, 23, across a secondary. The Specification as open to inspection under Sect. 91 also refers to amplifiers comprising an even number of stages, in which the stages are compensated in pairs by applying damping resistances alternately to primary and secondary circuits in successive stages. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US677260XA | 1948-12-17 | 1948-12-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB677260A true GB677260A (en) | 1952-08-13 |
Family
ID=22077981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB26975/49A Expired GB677260A (en) | 1948-12-17 | 1949-10-20 | Improvements in thermionic amplifiers of the band pass type |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR998854A (en) |
| GB (1) | GB677260A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1043388B (en) * | 1952-04-26 | 1958-11-13 | Standard Coil Prod Co Inc | Broadband stabilized amplifier for use in the input stages of television sets |
-
1949
- 1949-10-20 GB GB26975/49A patent/GB677260A/en not_active Expired
- 1949-11-02 FR FR998854D patent/FR998854A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1043388B (en) * | 1952-04-26 | 1958-11-13 | Standard Coil Prod Co Inc | Broadband stabilized amplifier for use in the input stages of television sets |
Also Published As
| Publication number | Publication date |
|---|---|
| FR998854A (en) | 1952-01-24 |
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