DE1639354A1 - Mikroheizelemente,insbesondere fuer Kathoden von Elektronenroehren - Google Patents
Mikroheizelemente,insbesondere fuer Kathoden von ElektronenroehrenInfo
- Publication number
- DE1639354A1 DE1639354A1 DE19681639354 DE1639354A DE1639354A1 DE 1639354 A1 DE1639354 A1 DE 1639354A1 DE 19681639354 DE19681639354 DE 19681639354 DE 1639354 A DE1639354 A DE 1639354A DE 1639354 A1 DE1639354 A1 DE 1639354A1
- Authority
- DE
- Germany
- Prior art keywords
- cathodes
- heating elements
- silicon carbide
- electron tubes
- micro heating
- 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.)
- Pending
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
- H01J1/22—Heaters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/02—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient
- H01C7/022—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient mainly consisting of non-metallic substances
-
- 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
- H01J1/15—Cathodes heated directly by an electric current
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Solid Thermionic Cathode (AREA)
- Carbon And Carbon Compounds (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL6703548A NL6703548A (ja) | 1967-03-07 | 1967-03-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1639354A1 true DE1639354A1 (de) | 1970-06-04 |
Family
ID=19799479
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19681639354 Pending DE1639354A1 (de) | 1967-03-07 | 1968-02-06 | Mikroheizelemente,insbesondere fuer Kathoden von Elektronenroehren |
Country Status (7)
Country | Link |
---|---|
US (1) | US3495120A (ja) |
CH (1) | CH469351A (ja) |
DE (1) | DE1639354A1 (ja) |
ES (1) | ES351239A1 (ja) |
FR (1) | FR1558677A (ja) |
GB (1) | GB1222887A (ja) |
NL (1) | NL6703548A (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018141458A1 (de) * | 2017-02-01 | 2018-08-09 | Epcos Ag | Ptc-heizer mit verringertem einschaltstrom |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5118983A (en) * | 1989-03-24 | 1992-06-02 | Mitsubishi Denki Kabushiki Kaisha | Thermionic electron source |
NL9100327A (nl) * | 1991-02-25 | 1992-09-16 | Philips Nv | Kathode. |
GB2404128B (en) | 2003-07-16 | 2005-08-24 | Kanthal Ltd | Silicon carbide furnace heating elements |
US20200066474A1 (en) * | 2018-08-22 | 2020-02-27 | Modern Electron, LLC | Cathodes with conformal cathode surfaces, vacuum electronic devices with cathodes with conformal cathode surfaces, and methods of manufacturing the same |
CN111243917B (zh) * | 2020-01-19 | 2021-12-07 | 中国科学院电子学研究所 | 一种阴极热子组件及其制备方法 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1814759A (en) * | 1926-02-10 | 1931-07-14 | Frederick S Mccullough | Cathode structure |
US3380936A (en) * | 1965-10-18 | 1968-04-30 | Matsushita Electric Ind Co Ltd | Silicon carbide varistors |
-
1967
- 1967-03-07 NL NL6703548A patent/NL6703548A/xx unknown
-
1968
- 1968-02-06 DE DE19681639354 patent/DE1639354A1/de active Pending
- 1968-02-20 US US706897A patent/US3495120A/en not_active Expired - Lifetime
- 1968-03-04 GB GB00292/68A patent/GB1222887A/en not_active Expired
- 1968-03-04 CH CH315468A patent/CH469351A/de unknown
- 1968-03-05 ES ES351239A patent/ES351239A1/es not_active Expired
- 1968-03-06 FR FR1558677D patent/FR1558677A/fr not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018141458A1 (de) * | 2017-02-01 | 2018-08-09 | Epcos Ag | Ptc-heizer mit verringertem einschaltstrom |
CN110235210A (zh) * | 2017-02-01 | 2019-09-13 | Tdk电子股份有限公司 | 具有减小的接通电流的ptc加热器 |
EP3577662B1 (de) | 2017-02-01 | 2022-08-17 | TDK Electronics AG | Ptc-heizer mit verringertem einschaltstrom |
Also Published As
Publication number | Publication date |
---|---|
FR1558677A (ja) | 1969-02-28 |
CH469351A (de) | 1969-02-28 |
US3495120A (en) | 1970-02-10 |
ES351239A1 (es) | 1969-06-01 |
GB1222887A (en) | 1971-02-17 |
NL6703548A (ja) | 1968-09-09 |
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