GB474179A - Indirectly heated high-voltage cathodes for electric discharge devices - Google Patents
Indirectly heated high-voltage cathodes for electric discharge devicesInfo
- Publication number
- GB474179A GB474179A GB26774/36A GB2677436A GB474179A GB 474179 A GB474179 A GB 474179A GB 26774/36 A GB26774/36 A GB 26774/36A GB 2677436 A GB2677436 A GB 2677436A GB 474179 A GB474179 A GB 474179A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electric discharge
- discharge devices
- layer
- indirectly heated
- heated high
- 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
- Solid Thermionic Cathode (AREA)
- Furnace Details (AREA)
- Resistance Heating (AREA)
Abstract
474,179. Electric heating resistances for electric discharge devices. RADIOAKT.-GES. D. S. LOEWE. Oct. 2, 1936, No. 26774. Convention date, Oct. 2, 1935. [Class 39 (iii)] The cathode 4 is heated by current passed through a layer of hard carbon 7 deposited on the inside of the tube, Fig. 3, or deposited on a thin ceramic rod 1 arranged in the tube, Fig. 1. Terminal caps 3 are arranged over graphite or metal coatings 2 provided over the ends of the layer. The carbon deposit is obtained by the decomposition of benzole vapour in a furnace in which are arranged the tubes or rods to be coated. Heating of the layer is effected at 1000 C. for a certain period of time after deposition.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DER94368D DE724812C (en) | 1935-10-02 | 1935-10-02 | Heating element for indirectly heated high-voltage cathodes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB474179A true GB474179A (en) | 1937-10-27 |
Family
ID=7419148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB26774/36A Expired GB474179A (en) | 1935-10-02 | 1936-10-02 | Indirectly heated high-voltage cathodes for electric discharge devices |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2083196A (en) |
| DE (1) | DE724812C (en) |
| FR (1) | FR811528A (en) |
| GB (1) | GB474179A (en) |
| NL (1) | NL47731C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110218987A (en) * | 2019-07-24 | 2019-09-10 | 合肥百思新材料研究院有限公司 | A kind of cold wall method CVD deposition equipment and its working method |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2563573A (en) * | 1951-08-07 | Hot cathode electron tube which re | ||
| US2528425A (en) * | 1950-10-31 | Electron tube cathode heater | ||
| US2817605A (en) * | 1947-03-24 | 1957-12-24 | Manuel C Sanz | Method for sealing the pores in a carbon body |
| GB962926A (en) * | 1962-03-19 | 1964-07-08 | Rank Bush Murphy Ltd | Improvements in thermionic cathodes and in methods of manufacturing such cathodes |
| GB1204316A (en) * | 1966-09-26 | 1970-09-03 | Atomic Energy Authority Uk | Improvements in or relating to electron emitting cathodes for irradiation machines |
| US3534218A (en) * | 1967-03-30 | 1970-10-13 | Atomic Energy Authority Uk | Electron emitting cathodes for irradiation machines |
-
1935
- 1935-10-02 DE DER94368D patent/DE724812C/en not_active Expired
-
1936
- 1936-09-29 US US103120A patent/US2083196A/en not_active Expired - Lifetime
- 1936-09-30 NL NL79420A patent/NL47731C/xx active
- 1936-10-01 FR FR811528D patent/FR811528A/en not_active Expired
- 1936-10-02 GB GB26774/36A patent/GB474179A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110218987A (en) * | 2019-07-24 | 2019-09-10 | 合肥百思新材料研究院有限公司 | A kind of cold wall method CVD deposition equipment and its working method |
Also Published As
| Publication number | Publication date |
|---|---|
| US2083196A (en) | 1937-06-08 |
| FR811528A (en) | 1937-04-16 |
| DE724812C (en) | 1942-09-05 |
| NL47731C (en) | 1940-02-15 |
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