GB148995A - Improvements in electrical systems involving three electrode thermionic tube elements - Google Patents
Improvements in electrical systems involving three electrode thermionic tube elementsInfo
- Publication number
- GB148995A GB148995A GB20892/20A GB2089220A GB148995A GB 148995 A GB148995 A GB 148995A GB 20892/20 A GB20892/20 A GB 20892/20A GB 2089220 A GB2089220 A GB 2089220A GB 148995 A GB148995 A GB 148995A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resistance
- voltage
- terminals
- tube
- value
- 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
- H03F1/38—Positive-feedback circuit arrangements without negative feedback
- H03F1/40—Positive-feedback circuit arrangements without negative feedback in discharge-tube amplifiers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
- Secondary Cells (AREA)
Abstract
148,995. Latour, M. Dec. 16, 1918, [Convention date]. Void [Published under Sect. 91 of the Act]. Thermionic relays and repeaters.-Relates to a thermionic tube system intended to create the effect of a negative resistance. The plate circuit of the tube 1 comprises two batteries 3, 5, and .a resistance 12, and the voltage of the battery 5 is arranged to compensate normally for the drop of potential between the terminals 10, 11 of the resistance 12 so that normally the voltage between the terminals is zero. The two batteries 4, 6 and the resistance 15 are similarly connected in the plate circuit of the tube 2 so that the voltage between terminals 13, 14 of the resistance 15 is zero. If a current (value i) flows through imped- .ance 9 (value z) it produces a voltage z i between the grid and filament of tube 1, and it is stated that this voltage, successively amplified by the two tubes 1, 2, results in producing the equivalent of a negative resistance between the terminals 13, 14. This negative resistance may be obtained of any desired value by making impedance 9 of a suitable value and any desired number of pairs of tubes may be used. The device may be inserted in a telephone line to balance the impedance of the line.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR470910X | 1922-12-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB148995A true GB148995A (en) | 1922-01-12 |
Family
ID=8902559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB20892/20A Expired GB148995A (en) | 1922-12-05 | 1920-07-12 | Improvements in electrical systems involving three electrode thermionic tube elements |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE470910C (en) |
| FR (2) | FR501472A (en) |
| GB (1) | GB148995A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE744087C (en) * | 1938-02-18 | 1944-01-08 | Aeg | Negative AC resistance |
-
1918
- 1918-12-16 FR FR501472A patent/FR501472A/en not_active Expired
-
1920
- 1920-07-12 GB GB20892/20A patent/GB148995A/en not_active Expired
-
1922
- 1922-12-05 FR FR27358D patent/FR27358E/en not_active Expired
-
1923
- 1923-12-05 DE DEL59079D patent/DE470910C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR501472A (en) | 1920-04-15 |
| DE470910C (en) | 1929-02-07 |
| FR27358E (en) | 1924-06-24 |
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