GB573348A - Improvements in or relating to thermionic valve circuits - Google Patents
Improvements in or relating to thermionic valve circuitsInfo
- Publication number
- GB573348A GB573348A GB18359/43A GB1835943A GB573348A GB 573348 A GB573348 A GB 573348A GB 18359/43 A GB18359/43 A GB 18359/43A GB 1835943 A GB1835943 A GB 1835943A GB 573348 A GB573348 A GB 573348A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resistance
- valve
- voltage
- cathode
- output
- 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
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
- H03F1/04—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in discharge-tube amplifiers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
- Rectifiers (AREA)
Abstract
573,348. Thermionic valve circuits. HADFIELD, B. M. Nov. 5, 1943, No. 18359. [Class 40 (v)] [Also in Group XXXV] A valve having an electrode screening another electrode in the path of the electronic current, is adapted to function as a valve with a reduced number of electrodes by connecting the two electrodes together by a resistance and and making the effective anode connection to the junction of the screen electrode and the resistance, so that the total electrode dissipation of the valve may be substantially increased. The value of the resistance is equal to the anode resistance of the valve divided by a factor corresponding to the ratio of the maximum working cathode current to the cathode current when the grid cathode potential is zero. In this way, a pentode or tetrode valve may be used as a triode amplifier. As a cathode follower, low-frequency amplifier, Fig. 2 (not shown), an output of five times that obtainable without the resistance may be obtained. Fig. 3 shows the application to a cathode follower used as an electronic voltage stabilizer. In this arrangement, a low impedance source, is provided and the stability is increased since the output voltage includes a term 1/Á times that of the supply voltage where Á is the amplification factor of the valve. The output may be taken across the anode resistance R or across the cathode resistance L3. If the supply is derived from some form of gas discharge tube stabilizer device and a voltage proportional to the change in output is applied to the control grid in place of the voltage E, an output almost completely independent of supply voltage variation may be obtained, and the permissible dissipation of the valve can be raised five times by the provision of the resistance according to the invention. A voltage e1 may be derived proportional to changes in output voltage to increase the stability. Fig. 4 shows the application to a rectifier, in this arrangement the control grid may be connected to the cathode through a limiting resistance or the grid may be omitted. Specification 162,773, [Class 40 (v)], is referred to.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB18359/43A GB573348A (en) | 1943-11-05 | 1943-11-05 | Improvements in or relating to thermionic valve circuits |
| US556878A US2467474A (en) | 1943-11-05 | 1944-10-02 | Thermionic valve circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB18359/43A GB573348A (en) | 1943-11-05 | 1943-11-05 | Improvements in or relating to thermionic valve circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB573348A true GB573348A (en) | 1945-11-16 |
Family
ID=10111104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB18359/43A Expired GB573348A (en) | 1943-11-05 | 1943-11-05 | Improvements in or relating to thermionic valve circuits |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2467474A (en) |
| GB (1) | GB573348A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2671176A (en) * | 1948-12-08 | 1954-03-02 | Fred S Landauer | Switch arrangement for electrotherapeutic treatment plants |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB450136A (en) * | 1934-12-04 | 1936-07-06 | Murphy Radio Ltd | Improvements in variable thermionic impedances |
| US2198464A (en) * | 1936-03-31 | 1940-04-23 | Rca Corp | Distortion reducing circuit |
| US2245616A (en) * | 1938-12-05 | 1941-06-17 | William H Woodin Jr | Amplification system |
| US2349881A (en) * | 1941-11-27 | 1944-05-30 | Rca Corp | Frequency modulation receiver |
| US2343753A (en) * | 1942-09-25 | 1944-03-07 | Bell Telephone Labor Inc | Receiving circuit for telegraph signaling systems |
-
1943
- 1943-11-05 GB GB18359/43A patent/GB573348A/en not_active Expired
-
1944
- 1944-10-02 US US556878A patent/US2467474A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2467474A (en) | 1949-04-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB579685A (en) | Improvements in or relating to thermionic amplifiers | |
| US2525632A (en) | Low-frequency amplifier | |
| GB573348A (en) | Improvements in or relating to thermionic valve circuits | |
| GB630123A (en) | Improvements relating to thermionic valve control circuits | |
| GB559078A (en) | Improvements in or relating to thermionic valve amplifying circuits | |
| GB840288A (en) | Improvements in or relating to electric circuits including electron discharge devices having at least one secondary emissive electrode | |
| GB765932A (en) | Improvements in or relating to a pulse responsive electronic circuit | |
| GB499206A (en) | Improvements in and relating to systems of voltage amplification | |
| GB578046A (en) | An improved electric circuit arrangement including a cathode-ray tube | |
| GB520882A (en) | Improvements in and relating to amplifier circuits | |
| US2604552A (en) | Multigrid amplifier with constant ratio of cathode current to anode current | |
| GB564250A (en) | Improvements in or relating to thermionic valve amplifier circuit arrangements | |
| GB650445A (en) | Improvements in or relating to television circuit arrangements | |
| US2550029A (en) | Electron discharge valve amplifier | |
| GB622238A (en) | Improvements in thermionic valve amplifiers | |
| GB471672A (en) | Improvements in or relating to electron discharge devices | |
| GB624886A (en) | Improvements in or relating to circuit-arrangements for the expansion of electrical oscillations | |
| GB639543A (en) | Improvements relating to thermionic valve amplifiers utilising electron multiplier valves | |
| GB722516A (en) | Improvements in or relating to electronic trigger circuits | |
| GB620847A (en) | Improvements in or relating to circuit for amplifying electrical oscillations | |
| GB406292A (en) | Improvements in or relating to thermionic valves and circuit arrangements therefor | |
| GB698278A (en) | Improvements in or relating to electrical circuit arrangements for standard frequency sources | |
| GB676454A (en) | Improvements in or relating to amplifying circuits | |
| GB628601A (en) | Improvements in thermionic valve amplifiers | |
| GB816664A (en) | Improvements in or relating to amplifying circuits |