GB471549A - Improvements in or relating to thermionic valve amplifiers - Google Patents
Improvements in or relating to thermionic valve amplifiersInfo
- Publication number
- GB471549A GB471549A GB682236A GB682236A GB471549A GB 471549 A GB471549 A GB 471549A GB 682236 A GB682236 A GB 682236A GB 682236 A GB682236 A GB 682236A GB 471549 A GB471549 A GB 471549A
- Authority
- GB
- United Kingdom
- Prior art keywords
- impedance
- valve
- voltage
- output
- lecher
- 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
- 235000017060 Arachis glabrata Nutrition 0.000 abstract 1
- 241001553178 Arachis glabrata Species 0.000 abstract 1
- 235000010777 Arachis hypogaea Nutrition 0.000 abstract 1
- 235000018262 Arachis monticola Nutrition 0.000 abstract 1
- 241001522296 Erithacus rubecula Species 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 abstract 1
- 239000000969 carrier Substances 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000037431 insertion Effects 0.000 abstract 1
- 238000003780 insertion Methods 0.000 abstract 1
- 235000020232 peanut Nutrition 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/50—Amplifiers in which input is applied to, or output is derived from, an impedance common to input and output circuits of the amplifying element, e.g. cathode follower
- H03F3/52—Amplifiers in which input is applied to, or output is derived from, an impedance common to input and output circuits of the amplifying element, e.g. cathode follower with tubes only
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
471,549. Valve amplifying circuits. KOLSTER-BRANDES, Ltd., and ROBIN, H. K. March 6, 1936, No. 6822. [Class 40 (v)] The output load impedance r is included in common with the anode - cathode and cathode-grid circuits so as to give a feedback voltage to the grid equal to that across the output impedance and in phase opposition to the input control voltage. By this means the valve is enabled to work directly into a low output impedance of approximately 100 ohms such as a transmission line, and although the voltage V2 may only be half the voltage V1, yet with a 40 to 1 step up input transformer S a power gain of 20 decibels can be obtained. The system greatly reduces crossmodulation when the valve is used for amplifying a number of carriers received on a common aerial before distribution to the respective receiving sets, and is also suitable for use as a television or as a high quality amplifier. A system using two such amplifiers in push-pull is disclosed and also a Lecher wire system with pea-nut valves arranged every quarter wave length in a concentric system, the low impedance input to the Lecher wires being directly connected to the impedance r and the virtual high-impedance output of the Lecher wire allowing of direct coupling to the next valve without the insertion of the step-up transformer S.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE419028D BE419028A (en) | 1936-03-06 | ||
| NL47702D NL47702C (en) | 1936-03-06 | ||
| GB682236A GB471549A (en) | 1936-03-06 | 1936-03-06 | Improvements in or relating to thermionic valve amplifiers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB682236A GB471549A (en) | 1936-03-06 | 1936-03-06 | Improvements in or relating to thermionic valve amplifiers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB471549A true GB471549A (en) | 1937-09-06 |
Family
ID=9821388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB682236A Expired GB471549A (en) | 1936-03-06 | 1936-03-06 | Improvements in or relating to thermionic valve amplifiers |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE419028A (en) |
| GB (1) | GB471549A (en) |
| NL (1) | NL47702C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2488417A (en) * | 1943-08-26 | 1949-11-15 | Westinghouse Electric Corp | Pulse amplifier |
-
0
- BE BE419028D patent/BE419028A/xx unknown
- NL NL47702D patent/NL47702C/xx active
-
1936
- 1936-03-06 GB GB682236A patent/GB471549A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2488417A (en) * | 1943-08-26 | 1949-11-15 | Westinghouse Electric Corp | Pulse amplifier |
Also Published As
| Publication number | Publication date |
|---|---|
| BE419028A (en) | |
| NL47702C (en) |
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