GB619767A - Improvements in electronic discharge devices - Google Patents
Improvements in electronic discharge devicesInfo
- Publication number
- GB619767A GB619767A GB34581/45A GB3458145A GB619767A GB 619767 A GB619767 A GB 619767A GB 34581/45 A GB34581/45 A GB 34581/45A GB 3458145 A GB3458145 A GB 3458145A GB 619767 A GB619767 A GB 619767A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cylinder
- cathode
- electrodes
- grid
- supporting disc
- 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
- H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
- H01J19/42—Mounting, supporting, spacing, or insulating of electrodes or of electrode assemblies
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
- H01J2893/0002—Construction arrangements of electrode systems
Landscapes
- Discharge Lamp (AREA)
Abstract
619,767. Thermionic valves. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 20, 1945, No. 34581. Convention date, Dec. 29, 1944. [Class 39 (i)] In an electron discharge device in which all the electrode leads pass through a base member of the envelope, the base member supports a metal tube in which are mounted a cathode, a control grid and an anode, all being planar and parallel, and which shields the anode lead from the other electrodes and their leads. As shown in Fig. 1, the planar electrodes 4, 5, 6, 7, 8 of a pentode are supported inside the metal cylinder 3 which is mounted on the base plate 2 of the envelope 1. The suppressor grid 5 is directly connected to the cylinder 3, the screen grid 6 is connected to the cylinder through byepass condenser formed by an insulating washer 13 and a flange 12 on the screen grid supporting disc 11, and the cathode 8 is connected to the cylinder through a byepass condenser formed by an insulating washer 17, the flanged base portion 16 of the cathode and a metal washer 17<1> contacting the cylinder. The anode lead 27 passing down the outside of the cylinder 3, and the other electrode leads passing down inside the cylinder, are sealed through the base plate 2. The electrodes and the members supporting them may be assembled in the cylinder 3 by pressing them together to form a composite electrode structure, Fig. 2 (not shown), the insulating washer 13 being extended to separate the screen grid supporting disc 11 from the suppressor grid supporting disc 10. Specification 445,087 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US619767XA | 1944-12-29 | 1944-12-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB619767A true GB619767A (en) | 1949-03-15 |
Family
ID=22039424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34581/45A Expired GB619767A (en) | 1944-12-29 | 1945-12-20 | Improvements in electronic discharge devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB619767A (en) |
-
1945
- 1945-12-20 GB GB34581/45A patent/GB619767A/en not_active Expired
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