GB484900A - Improvements in or relating to electric discharge tubes - Google Patents
Improvements in or relating to electric discharge tubesInfo
- Publication number
- GB484900A GB484900A GB5432/38A GB543238A GB484900A GB 484900 A GB484900 A GB 484900A GB 5432/38 A GB5432/38 A GB 5432/38A GB 543238 A GB543238 A GB 543238A GB 484900 A GB484900 A GB 484900A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrode
- cathode
- plate
- electric discharge
- electrons
- 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
- H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
- H01J43/02—Tubes in which one or a few electrodes are secondary-electron emitting electrodes
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
- Solid Thermionic Cathode (AREA)
- Microwave Tubes (AREA)
Abstract
484,900. Discharge apparatus. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Feb. 21, 1938, No. 5432. Convention date, Feb. 23, 1937. [Class 39 (i)] In an electric discharge tube having an electrode system which comprises a secondaryemission electrode and a plate-shaped anode arranged outside the paths of the electrons travelling from the cathode to the secondaryemission electrode, there is provided a gridshaped electrode which is conductively connected to the anode. Electrons emitted by the cathode 1 are caused by a suitable potential applied to a screen 8 to travel over the curved paths shown to the secondary-emission electrode 5, from whence secondary electrons pass to the plate 7. The grid 6, which is located a short distance in front of the electrode 5 and is connected to the plate 7, serves to withdraw the secondary electrons produced from the neighbourhood of the electrode 5. A screen 9 prevents material vaporized from the cathode from reaching the electrode 5.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL200824X | 1937-02-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB484900A true GB484900A (en) | 1938-05-11 |
Family
ID=19778330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5432/38A Expired GB484900A (en) | 1937-02-23 | 1938-02-21 | Improvements in or relating to electric discharge tubes |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US2146607A (en) |
| AT (1) | AT160558B (en) |
| BE (1) | BE426512A (en) |
| CH (1) | CH200824A (en) |
| DE (1) | DE740422C (en) |
| FR (1) | FR834094A (en) |
| GB (1) | GB484900A (en) |
| NL (1) | NL48109C (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR857575A (en) * | 1939-02-27 | 1940-09-19 | Materiel Telephonique | Electronic discharge devices and circuits using them |
| BE450216A (en) * | 1942-04-17 | |||
| FR894732A (en) * | 1942-05-16 | 1945-01-04 | Philips Nv | Electric discharge tube comprising a secondary emission electrode |
| US2422088A (en) * | 1944-04-03 | 1947-06-10 | Rca Corp | Electronic discriminator |
| US2577164A (en) * | 1945-03-20 | 1951-12-04 | Rca Corp | Electronic device |
| NL72121C (en) * | 1945-10-24 | |||
| GB683061A (en) * | 1948-01-24 | 1952-11-19 | Emi Ltd | Improvements relating to thermionic valves utilising secondary electron emission amplification |
| US2559395A (en) * | 1948-07-15 | 1951-07-03 | Electrons Inc | Controllable electron discharge tube having low tube losses |
| US2679592A (en) * | 1948-08-31 | 1954-05-25 | Rca Corp | Generator and frequency control |
| US2559524A (en) * | 1948-10-20 | 1951-07-03 | Rca Corp | Electron discharge device of the beam deflection type |
| US2864026A (en) * | 1953-03-20 | 1958-12-09 | Philips Corp | Electric discharge tube |
| US2802127A (en) * | 1954-02-03 | 1957-08-06 | Dobischek Dietrich | Dynode coating |
| US3008218A (en) * | 1957-04-22 | 1961-11-14 | Nat Broach & Mach | Gear tooth chamfering tool |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB443777A (en) * | 1934-07-05 | 1936-03-05 | James Dwyer Mcgee | Electron discharge amplifiers |
| US2141322A (en) * | 1935-06-25 | 1938-12-27 | Rca Corp | Cascaded secondary electron emitter amplifier |
-
0
- AT AT160558D patent/AT160558B/en active
- BE BE426512D patent/BE426512A/xx unknown
- NL NL48109D patent/NL48109C/xx active
-
1937
- 1937-03-20 DE DEN40507D patent/DE740422C/en not_active Expired
-
1938
- 1938-02-15 US US190531A patent/US2146607A/en not_active Expired - Lifetime
- 1938-02-21 GB GB5432/38A patent/GB484900A/en not_active Expired
- 1938-02-21 CH CH200824D patent/CH200824A/en unknown
- 1938-02-22 FR FR834094D patent/FR834094A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2146607A (en) | 1939-02-07 |
| CH200824A (en) | 1938-10-31 |
| FR834094A (en) | 1938-11-10 |
| BE426512A (en) | |
| NL48109C (en) | |
| AT160558B (en) | 1941-07-25 |
| DE740422C (en) | 1943-10-20 |
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