GB442649A - Indirectly heated cathode for electric discharge tubes - Google Patents
Indirectly heated cathode for electric discharge tubesInfo
- Publication number
- GB442649A GB442649A GB18437/35A GB1843735A GB442649A GB 442649 A GB442649 A GB 442649A GB 18437/35 A GB18437/35 A GB 18437/35A GB 1843735 A GB1843735 A GB 1843735A GB 442649 A GB442649 A GB 442649A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- pins
- cathode
- indirectly heated
- heater
- 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
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/13—Solid thermionic cathodes
- H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
Landscapes
- Hair Curling (AREA)
- Resistance Heating (AREA)
- Secondary Cells (AREA)
Abstract
442,649. Thermionic cathodes. EGYESULT IZZOLAMPA ES VILLAMOSSAGI RESZVENYTARSASAG, Ujpest, near Budapest. June 27, 1935, No. 18437. Convention date, June 28, 1934. [Class 39 (i)] In an indirectly heated cathode the cathode body is formed of a tube 1 supported by pins 2a, 3a integral with plugs 2, 3 or caps which fit in or on the ends of the tube ; slots 1a, 1b at the lower end of the tube allow the heater wires to pass out. The heater may be of hair-pin or spiral shape, and is insulated by a tube 4 or by material burned on the heater wire. One of the pins is used as the cathode lead. The pins are received in mica end spacers and at least one of the pins is of varying cross -see - tion to jam in the hole in the spacer. The cathode may be used with multi-grid valves. Discs of zirconium oxide may be fitted on the ends of the plugs where they enter the tube to further insulate them from the cathode body.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HU442649X | 1934-06-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB442649A true GB442649A (en) | 1936-02-12 |
Family
ID=10979179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB18437/35A Expired GB442649A (en) | 1934-06-28 | 1935-06-27 | Indirectly heated cathode for electric discharge tubes |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR791661A (en) |
| GB (1) | GB442649A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2436907A (en) * | 1945-06-23 | 1948-03-02 | Nasa | Indirectly heated cathode |
-
1935
- 1935-06-24 FR FR791661D patent/FR791661A/en not_active Expired
- 1935-06-27 GB GB18437/35A patent/GB442649A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2436907A (en) * | 1945-06-23 | 1948-03-02 | Nasa | Indirectly heated cathode |
Also Published As
| Publication number | Publication date |
|---|---|
| FR791661A (en) | 1935-12-14 |
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