GB490656A - Improvements in broad band amplifiers - Google Patents
Improvements in broad band amplifiersInfo
- Publication number
- GB490656A GB490656A GB12078/38A GB1207838A GB490656A GB 490656 A GB490656 A GB 490656A GB 12078/38 A GB12078/38 A GB 12078/38A GB 1207838 A GB1207838 A GB 1207838A GB 490656 A GB490656 A GB 490656A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stage
- valves
- broad band
- output
- band amplifiers
- 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)
- Amplifiers (AREA)
Abstract
490,656. Valve amplifying circuits. HAZELTINE CORPORATION. April 22, 1938, No. 12078. Convention date, May 11, 1937. [Class 40 (v)] A broad-band amplifier comprises an amplifying stage the output of which has appreciable shunt capacitance and is coupled in the common cathode circuit of the following stage, so that the amplifier stages have complementary response characteristics. The Figure shows a first stage comprising valves 14, 15, 16 in parallel having an output resistance 23 which produces negative feedback in the stage 17. The cathode of the stage 17 is directly connected to the preceding anodes so that for direct current the valves are in series.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US141916A US2174234A (en) | 1937-05-11 | 1937-05-11 | Broad band amplifier |
Publications (1)
Publication Number | Publication Date |
---|---|
GB490656A true GB490656A (en) | 1938-08-18 |
Family
ID=22497798
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB12078/38A Expired GB490656A (en) | 1937-05-11 | 1938-04-22 | Improvements in broad band amplifiers |
Country Status (6)
Country | Link |
---|---|
US (1) | US2174234A (en) |
BE (1) | BE428005A (en) |
CH (1) | CH206321A (en) |
DE (1) | DE763749C (en) |
GB (1) | GB490656A (en) |
NL (1) | NL58460C (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE878670C (en) * | 1941-04-03 | 1953-06-05 | Klangfilm Gmbh | Circuit arrangement for coupling an electrostatic speech power source |
GB617184A (en) * | 1946-04-30 | 1949-02-02 | Eric Lawrence Casling White | Improvements in or relating to thermionic valve circuits |
US2552884A (en) * | 1947-01-21 | 1951-05-15 | Western Union Telegraph Co | Oscilloscope system |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1896534A (en) * | 1927-05-13 | 1933-02-07 | Gen Electric | Electrical system |
US2057998A (en) * | 1927-11-18 | 1936-10-20 | Telefunken Gmbh | Vacuum tube circuits |
GB337830A (en) * | 1929-06-08 | 1930-11-10 | Radio Frequency Lab Inc | Electrical amplifier circuits |
GB349483A (en) * | 1930-01-23 | 1931-05-26 | Patrick Henry | Improvements in the design of radio and sound reproducing apparatus and the like |
DE584782C (en) * | 1931-01-06 | 1933-09-23 | Telefunken Gmbh | Amplifier circuit |
GB425553A (en) * | 1933-09-18 | 1935-03-18 | Emi Ltd | Improvements in and relating to thermionic valve amplifiers |
GB465118A (en) * | 1935-10-30 | 1937-04-30 | British Thomson Houston Co Ltd | Improvements in and relating to amplifying circuits suitable in connection with television |
-
0
- NL NL58460D patent/NL58460C/xx active
- BE BE428005D patent/BE428005A/xx unknown
-
1937
- 1937-05-11 US US141916A patent/US2174234A/en not_active Expired - Lifetime
-
1938
- 1938-04-22 GB GB12078/38A patent/GB490656A/en not_active Expired
- 1938-05-02 CH CH206321D patent/CH206321A/en unknown
- 1938-05-04 DE DEH155706D patent/DE763749C/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CH206321A (en) | 1939-07-31 |
US2174234A (en) | 1939-09-26 |
NL58460C (en) | |
DE763749C (en) | 1953-05-04 |
BE428005A (en) |
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