GB600884A - Improvements in and relating to amplifiers employing multi-grid valves - Google Patents
Improvements in and relating to amplifiers employing multi-grid valvesInfo
- Publication number
- GB600884A GB600884A GB3140445A GB3140445A GB600884A GB 600884 A GB600884 A GB 600884A GB 3140445 A GB3140445 A GB 3140445A GB 3140445 A GB3140445 A GB 3140445A GB 600884 A GB600884 A GB 600884A
- Authority
- GB
- United Kingdom
- Prior art keywords
- grid
- anode
- grids
- valve
- stage
- 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
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
- H03F1/36—Negative-feedback-circuit arrangements with or without positive feedback in discharge-tube amplifiers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
600,884. Valve amplifiers. SNEATH, O. B. Nov. 21, 1945, No. 31404. [Class 40 (vi)] A two-stage cascade amplifier (Fig. 1) utilizes a single multi-grid valve which has input signals (from microphone 8) fed to the inner control grid 2, while grid 3 acts as a first anode which is coupled by capacitor 13 to the second control grid 4 lying external to grids 2 and 3. Screen grid 5 is connected to the gridanode 3 and the output is taken from the final anode 7 which has load 15 high relative to the grid-anode load 10. Resistor 14 provides negative feed-back between the " anodes " of each stage. With heptodes without an internal grid-cathode connection, the grids may be selected to provide a screen grid between the inner control grid and the grid-anode, while multi-grid valves with a separate triode section may have the inner control grids of each section strapped together and the triode anode connected to the cathode or grid-anode of the first amplifying stage. A pentode valve may be used in which a close-meshed outer control grid replaces the conventional suppressor grid.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB600884A true GB600884A (en) | 1948-04-21 |
Family
ID=1742540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3140445A Expired GB600884A (en) | 1945-11-21 | Improvements in and relating to amplifiers employing multi-grid valves |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB600884A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2664471A (en) * | 1951-06-12 | 1953-12-29 | Hazeltine Research Inc | Wide-band direct-current repeater |
-
1945
- 1945-11-21 GB GB3140445A patent/GB600884A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2664471A (en) * | 1951-06-12 | 1953-12-29 | Hazeltine Research Inc | Wide-band direct-current repeater |
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