FR869470A - Secondary emission cathode - Google Patents
Secondary emission cathodeInfo
- Publication number
- FR869470A FR869470A FR869470DA FR869470A FR 869470 A FR869470 A FR 869470A FR 869470D A FR869470D A FR 869470DA FR 869470 A FR869470 A FR 869470A
- Authority
- FR
- France
- Prior art keywords
- emission cathode
- secondary emission
- cathode
- emission
- 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
- H01J1/32—Secondary-electron-emitting electrodes
-
- 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
- H01J9/02—Manufacture of electrodes or electrode systems
- H01J9/12—Manufacture of electrodes or electrode systems of photo-emissive cathodes; of secondary-emission electrodes
- H01J9/125—Manufacture of electrodes or electrode systems of photo-emissive cathodes; of secondary-emission electrodes of secondary emission electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2201/00—Electrodes common to discharge tubes
- H01J2201/32—Secondary emission electrodes
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE869470X | 1940-02-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR869470A true FR869470A (en) | 1942-02-03 |
Family
ID=6802940
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR869470D Expired FR869470A (en) | 1940-02-16 | 1941-01-23 | Secondary emission cathode |
Country Status (2)
Country | Link |
---|---|
BE (1) | BE440557A (en) |
FR (1) | FR869470A (en) |
-
0
- BE BE440557D patent/BE440557A/xx unknown
-
1941
- 1941-01-23 FR FR869470D patent/FR869470A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BE440557A (en) |
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