GB344096A - Improvements in thermionic valve amplifying and/or detecting systems - Google Patents
Improvements in thermionic valve amplifying and/or detecting systemsInfo
- Publication number
- GB344096A GB344096A GB3839629A GB3839629A GB344096A GB 344096 A GB344096 A GB 344096A GB 3839629 A GB3839629 A GB 3839629A GB 3839629 A GB3839629 A GB 3839629A GB 344096 A GB344096 A GB 344096A
- Authority
- GB
- United Kingdom
- Prior art keywords
- grid
- valve
- potentiometer
- resistance
- cathode
- 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
- H03F1/42—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)
- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
344,096. Valve amplifying circuits. MIDGLEY, A. H., Fairfield, Harefield Road, Uxbridge, Middlesex. Dec. 14, 1929, No. 38396. [Class 40 (v).] In a thermionic amplifier or detector a single supply source H1, H2 furnishes both anode potential and grid-biasing potential, while the grids of the valves after the first are connected directly to a resistance connected between the negative terminal of the source and the plate of the preceding valve. The Figure shows resistances I, I1 shunted by condensers C1, C2 of low impedance at the marking frequency of the amplifier arranged to render the cathodes positive with regard to the negative terminal of the source so that the grid may be negatively biased. The impedance I3 for the last valve may be the field winding of a moving coil loud-speaker. By making the impedances in the cathode leads common to a pair of valves and by suitable choice of the nature of these impedances high or low frequencies may be accentuated or suppressed. Grid bias for the first valve may be obtained from potentiometer P and resistance K as shown or a resistance may be connected between the cathode and the potentiometer at a point of approximately the same potential as the cathode. The grid is biased from the potentiometer as previously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3839629A GB344096A (en) | 1929-12-14 | 1929-12-14 | Improvements in thermionic valve amplifying and/or detecting systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3839629A GB344096A (en) | 1929-12-14 | 1929-12-14 | Improvements in thermionic valve amplifying and/or detecting systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB344096A true GB344096A (en) | 1931-03-05 |
Family
ID=10403202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3839629A Expired GB344096A (en) | 1929-12-14 | 1929-12-14 | Improvements in thermionic valve amplifying and/or detecting systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB344096A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2496881A (en) * | 1946-03-28 | 1950-02-07 | Gen Electric | Compensated degenerative control circuit |
| DE898456C (en) * | 1937-12-18 | 1953-11-30 | Fernseh Gmbh | Arrangement for automatic image brightness control in circuits with cathode ray tubes for image reproduction, especially television transmission equipment |
-
1929
- 1929-12-14 GB GB3839629A patent/GB344096A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE898456C (en) * | 1937-12-18 | 1953-11-30 | Fernseh Gmbh | Arrangement for automatic image brightness control in circuits with cathode ray tubes for image reproduction, especially television transmission equipment |
| US2496881A (en) * | 1946-03-28 | 1950-02-07 | Gen Electric | Compensated degenerative control circuit |
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