GB642600A - Improvements in or relating to electron discharge apparatus - Google Patents
Improvements in or relating to electron discharge apparatusInfo
- Publication number
- GB642600A GB642600A GB20133/47A GB2013347A GB642600A GB 642600 A GB642600 A GB 642600A GB 20133/47 A GB20133/47 A GB 20133/47A GB 2013347 A GB2013347 A GB 2013347A GB 642600 A GB642600 A GB 642600A
- Authority
- GB
- United Kingdom
- Prior art keywords
- space
- charge electrode
- anode
- control grid
- cathode
- 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
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J21/00—Vacuum tubes
- H01J21/02—Tubes with a single discharge path
- H01J21/06—Tubes with a single discharge path having electrostatic control means only
- H01J21/065—Devices for short wave tubes
Landscapes
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
Abstract
642,600. Thermionic valves. WESTERN ELECTRIC CO., Inc. July 25, 1947, No. 20133. Convention date, March 31, 1939. [Class 39 (i)] A positive space-charge electrode 22, 23, Fig. 3, between negative control grid 24 and cathode 27 is adjusted to provide a negative capacitance between these electrodes. A theoretical discussion shows that to do this the electrons must leave the space-charge electrode with a finite velocity and in a retarding field. The spacing of the space-charge electrode from the control grid must be at least 1.5 times its spacing from the cathode; as shown, it is three times. Characteristic curves are given, which exhibit also negative resistance and transconductance under certain conditions. The electrodes are aligned cylindrical grids supported within a cylindrical anode 17 by mica spacers, the anode being supported by a stem clamp. As shown, the space-charge electrode is two grids 22, 23, connected together. A screen-grid 40, Fig. 11, may be provided between the anode and control grid.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US642600XA | 1939-03-31 | 1939-03-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB642600A true GB642600A (en) | 1950-09-06 |
Family
ID=22054670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB20133/47A Expired GB642600A (en) | 1939-03-31 | 1947-07-25 | Improvements in or relating to electron discharge apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB642600A (en) |
-
1947
- 1947-07-25 GB GB20133/47A patent/GB642600A/en not_active Expired
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