GB549125A - Improvements in and relating to electrical control systems employing vacuum tubes operating with secondary emission - Google Patents
Improvements in and relating to electrical control systems employing vacuum tubes operating with secondary emissionInfo
- Publication number
- GB549125A GB549125A GB8909/41A GB890941A GB549125A GB 549125 A GB549125 A GB 549125A GB 8909/41 A GB8909/41 A GB 8909/41A GB 890941 A GB890941 A GB 890941A GB 549125 A GB549125 A GB 549125A
- Authority
- GB
- United Kingdom
- Prior art keywords
- change
- secondary emission
- resistance
- valve
- current
- 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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Lasers (AREA)
Abstract
549,125. Valve relay circuits. BRITISH THOMSON-HOUSTON CO., Ltd. July 14, 1941, No. 8909. Convention date, July 13, 1940. [Class 40 (v)] In a thermionic relay circuit in which a utilization device is connected between the cathode and the secondary emission electrode of a valve, the secondary emission current is caused to change rapidly by changing the operating conditions so as to bring the valve into or out of the range of stable operation: In Fig. 5 the utilization device 44 is connected in series with a resistance 40 between the cathode 31 andthe secondary emission electrode 34. A battery 43 and switch 44 are provided for starting the arrangement. Then a change in potential provided by a device 46 in the control grid circuit causes the tube to pass out of the range of stable operation and the current through resistance 40' and device 41 abruptly ceases: The devicemay be connected in parallel with resistance 40 and the change in current may be brought about by a change in anode potential. In a further modification, the change is. produced by altering the value of resistance 40 by means of a tap moved by a servomotor (Fig. 7, not shown). Specification 526,848 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US549125XA | 1940-07-13 | 1940-07-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB549125A true GB549125A (en) | 1942-11-06 |
Family
ID=21994324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8909/41A Expired GB549125A (en) | 1940-07-13 | 1941-07-14 | Improvements in and relating to electrical control systems employing vacuum tubes operating with secondary emission |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB549125A (en) |
-
1941
- 1941-07-14 GB GB8909/41A patent/GB549125A/en not_active Expired
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