GB922533A - Improvements relating to thermionic valves - Google Patents
Improvements relating to thermionic valvesInfo
- Publication number
- GB922533A GB922533A GB1448859A GB1448859A GB922533A GB 922533 A GB922533 A GB 922533A GB 1448859 A GB1448859 A GB 1448859A GB 1448859 A GB1448859 A GB 1448859A GB 922533 A GB922533 A GB 922533A
- Authority
- GB
- United Kingdom
- Prior art keywords
- getter
- lead
- envelope
- deposit
- cathode lead
- 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
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/38—Exhausting, degassing, filling, or cleaning vessels
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Abstract
922,533. Thermionic valves. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. April 14, 1960 [April 28, 1959], No. 14488/59. Class 39 (1). In a thermionic valve in which the cathode lead extends through the upper portion of the envelope a getter is located above the electrode assembly and an electrical lead extending between a position on the inner surface of the upper portion of the envelope, where the getter deposit is produced, and earth, or a point of low potential, so as to earth the getter deposit. The getter lead reduces noise due to sparkover between the cathode lead 9 and the getter deposit 10. The getter deposit 10 is preferably connected to the cathode lead 9 but may alternatively be connected to the lead of another electrode if earthed. As shown, a conductive wire or strip 11 connects the getter deposit 10 with the cathode lead 9 and conductor strip 8 and abuts against the inner surface of the tube envelope. Wire or strip 11 is preferably resilient and is welded at its mid-point to 8, 9. In assembly the electrode assembly is pushed upwards; this causes the arms of 11 to bow and lie along the inner surface of the envelope. The getter ring 6 is shielded from the electrodes by a screen 7.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1448859A GB922533A (en) | 1959-04-28 | 1959-04-28 | Improvements relating to thermionic valves |
| DE1960A0015021 DE1824762U (en) | 1959-04-28 | 1960-04-27 | GLOW CATHODE TUBE. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1448859A GB922533A (en) | 1959-04-28 | 1959-04-28 | Improvements relating to thermionic valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB922533A true GB922533A (en) | 1963-04-03 |
Family
ID=10042101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1448859A Expired GB922533A (en) | 1959-04-28 | 1959-04-28 | Improvements relating to thermionic valves |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1824762U (en) |
| GB (1) | GB922533A (en) |
-
1959
- 1959-04-28 GB GB1448859A patent/GB922533A/en not_active Expired
-
1960
- 1960-04-27 DE DE1960A0015021 patent/DE1824762U/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1824762U (en) | 1961-01-12 |
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