GB185167A - Improvements in and relating to amplifying systems employing electron discharge devices - Google Patents
Improvements in and relating to amplifying systems employing electron discharge devicesInfo
- Publication number
- GB185167A GB185167A GB1406321A GB1406321A GB185167A GB 185167 A GB185167 A GB 185167A GB 1406321 A GB1406321 A GB 1406321A GB 1406321 A GB1406321 A GB 1406321A GB 185167 A GB185167 A GB 185167A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- electrode
- anode
- circuit
- resistance
- 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
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/54—Amplifiers using transit-time effect in tubes or semiconductor devices
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Measurement Of Radiation (AREA)
Abstract
185,167. British Thomson - Houston Co., Ltd., (General Electric Co.). May 19, 1921. Thermionic relays.-In an amplifier comprising a three-electrode valve of the dynatron type, means common to both the cathode-anode and cathode-third-electrode circuits are provided whereby the potential of the cathode is varied in accordance with the oscillations to be amplified with respect to both the anode and third electrode. This allows of the exclusion from the negative resistance circuit of all inductance so that the tendency to self-oscillate is destroyed. In an example Fig. 1, the valve 1 is so connected that the plate 5 has a higher potential than the grid which acts as the secondary cathode. Oscillations to be amplified are applied to the transformer 8. The negative resistance may be balanced by a positive resistance 9 and potential variations across this applied to the grid of an amplifier or detector 10. The secondary of transformer 8 may be shunted by a variable condenser 12 fcr tuning. In a modification in which the functions of the electrodes 4, 5 are interchanged, a resistance is included in the cathodethird electrode circuit and the telephones in the cathode-anode circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1406321A GB185167A (en) | 1921-05-19 | 1921-05-19 | Improvements in and relating to amplifying systems employing electron discharge devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1406321A GB185167A (en) | 1921-05-19 | 1921-05-19 | Improvements in and relating to amplifying systems employing electron discharge devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB185167A true GB185167A (en) | 1922-08-21 |
Family
ID=10034318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1406321A Expired GB185167A (en) | 1921-05-19 | 1921-05-19 | Improvements in and relating to amplifying systems employing electron discharge devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB185167A (en) |
-
1921
- 1921-05-19 GB GB1406321A patent/GB185167A/en not_active Expired
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