GB238265A - Improvements in thermionic generators of high frequency electric oscillations - Google Patents
Improvements in thermionic generators of high frequency electric oscillationsInfo
- Publication number
- GB238265A GB238265A GB903424A GB903424A GB238265A GB 238265 A GB238265 A GB 238265A GB 903424 A GB903424 A GB 903424A GB 903424 A GB903424 A GB 903424A GB 238265 A GB238265 A GB 238265A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shield
- bulb
- deposited
- high frequency
- copper
- 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
- H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
- H01J5/02—Vessels; Containers; Shields associated therewith; Vacuum locks
- H01J5/08—Vessels; Containers; Shields associated therewith; Vacuum locks provided with coatings on the walls thereof; Selection of materials for the coatings
Landscapes
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Abstract
238,265. Gill, E. W. B., and Green, E. April 9, 1924. Addition to 201,585. Vacuum tubes.-In an oscillation-generating valve of the type described in the parent Specification, a conducting shield is provided which extends over practically the whole of the outside or inside of the bulb; the shield short-circuits the high resistance film deposited on the inside of the bulb and reduces eddy-current losses. The shield may consist of strips b of copper, or copper gauze which may be in contact with the bulb. Connection between the shield and the deposited film is not usually necessary. The shield may cover a grid lead brought out through a side tube. A negative potential may be applied to the shield to prevent bombardment of the bulb by electrons. In another arrangement the shield consists of a metallic coating deposited on the inner surface of the bulb. According to the Provisional Specification the shield may be connected with the deposited film by a wire sealed through the bulb.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL18427D NL18427C (en) | 1924-04-09 | ||
| GB903424A GB238265A (en) | 1924-04-09 | 1924-04-09 | Improvements in thermionic generators of high frequency electric oscillations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB903424A GB238265A (en) | 1924-04-09 | 1924-04-09 | Improvements in thermionic generators of high frequency electric oscillations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB238265A true GB238265A (en) | 1925-08-10 |
Family
ID=9864112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB903424A Expired GB238265A (en) | 1924-04-09 | 1924-04-09 | Improvements in thermionic generators of high frequency electric oscillations |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB238265A (en) |
| NL (1) | NL18427C (en) |
-
0
- NL NL18427D patent/NL18427C/xx active
-
1924
- 1924-04-09 GB GB903424A patent/GB238265A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL18427C (en) |
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