GB1190957A - Triggerable Vacuum Gap Devices - Google Patents
Triggerable Vacuum Gap DevicesInfo
- Publication number
- GB1190957A GB1190957A GB26149/67A GB2614967A GB1190957A GB 1190957 A GB1190957 A GB 1190957A GB 26149/67 A GB26149/67 A GB 26149/67A GB 2614967 A GB2614967 A GB 2614967A GB 1190957 A GB1190957 A GB 1190957A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gap
- plasma
- trigger
- hydrogen
- nozzle
- 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
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T2/00—Spark gaps comprising auxiliary triggering means
- H01T2/02—Spark gaps comprising auxiliary triggering means comprising a trigger electrode or an auxiliary spark gap
Abstract
1,190,957. Cold-cathode tubes; vacuum switches. GENERAL ELECTRIC CO. 6 June, 1967 [21 Sept., 1966], No. 26149/67. Headings H1D and H1N. In a triggerable vacuum gap device provided with a restricted diameter nozzle leading to a central cavity containing a trigger gap for injecting a pulse of plasma into the primary gap upon receipt of an electrical signal, the trigger gap 54 is shielded by the wall 45 of the nozzle and comprises a groove scored in a coating extending over a ceramic insulator 46. The coating may be of hydrogen-storing material, such as titanium, or of metal such as copper or beryllium having a low vapour pressure. When the gap is fired a plasma is formed and the magnetic field produced by the current loop of the firing pulse propels the plasma through the nozzle. In Fig. 5, the trigger electrode 49 is cup-shaped and the trigger gap 54 is arranged vertically to give protection against the fall of liquid arc electrode material. The electrodes may be mounted rigidly in an envelope (Fig. 1, not shown), or one of them may be mounted on a bellows (Fig. 6, not shown) so that its position can be adjusted. The assembly of the complete device may be made in a hydrogen furnace in one atmosphere pressure of hydrogen so that the active gas storing material collects the trapped gas as it cools and lowers the pressure to 10<SP>-5</SP> mm. or less. Alternatively, a tubulation (23, Fig. 1) may be provided so that the device may be evacuated, filled and sealed subsequent to the formation of ceramic-to-metal seals in the envelope. If low vapour pressure metal is used the processing may be conducted entirely in vacuo.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US58099866A | 1966-09-21 | 1966-09-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1190957A true GB1190957A (en) | 1970-05-06 |
Family
ID=24323484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB26149/67A Expired GB1190957A (en) | 1966-09-21 | 1967-06-06 | Triggerable Vacuum Gap Devices |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3465192A (en) |
| JP (1) | JPS485545B1 (en) |
| DE (1) | DE1640255A1 (en) |
| GB (1) | GB1190957A (en) |
| SE (1) | SE324187B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5994850A (en) * | 1995-09-08 | 1999-11-30 | Eev Limited | Switching arrangements wherein a cylindrical trigger electrode is arranged around a gap between an anode and cathode for establishing a discharge therebetween |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3581142A (en) * | 1969-03-19 | 1971-05-25 | Gen Electric | Triggered vacuum gap device with means for reducing the delay time to arc-over the main gap |
| US3657600A (en) * | 1970-05-18 | 1972-04-18 | United Aircraft Corp | Auxiliary ionization of dc electric discharge electrode boundary sheaths |
| FR2120211A5 (en) * | 1970-09-16 | 1972-08-18 | Comp Generale Electricite | |
| US3758803A (en) * | 1972-02-18 | 1973-09-11 | M O Valve Co Ltd | Electric discharge devices |
| US4126808A (en) * | 1977-09-02 | 1978-11-21 | Electric Power Research Institute, Inc. | High voltage two stage triggered vacuum gap |
| US4958365A (en) * | 1981-10-21 | 1990-09-18 | Elscint Ltd. | Medical imaging device using triggered plasma cathode flash X-ray source |
| US4592079A (en) * | 1981-10-21 | 1986-05-27 | Elscint Ltd. | Medical imaging device using triggered plasma cathode flash X-ray sources |
| US4924102A (en) * | 1987-12-25 | 1990-05-08 | Mitsubishi Denki Kabushiki Kaisha | Apparatus for generating negatively charged species |
| US5089707A (en) * | 1990-11-14 | 1992-02-18 | Ism Technologies, Inc. | Ion beam generating apparatus with electronic switching between multiple cathodes |
| US20090134129A1 (en) * | 2007-11-27 | 2009-05-28 | General Electric Company | Ablative plasma gun apparatus and system |
| US8319136B2 (en) * | 2010-06-29 | 2012-11-27 | Schneider Electric USA, Inc. | Arcing fault and arc flash protection system having a high-speed switch |
| RU2520614C1 (en) * | 2012-12-29 | 2014-06-27 | Открытое акционерное общество "Научно-исследовательский институт газо-разрядных приборов "Плазма" (ОАО "Плазма") | Triggered spark gap |
| GB201803338D0 (en) * | 2018-03-01 | 2018-04-18 | Secr Defence | A switching device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3188514A (en) * | 1961-05-10 | 1965-06-08 | Gen Electric | Gas generating electric discharge device |
| US3087092A (en) * | 1961-05-10 | 1963-04-23 | Gen Electric | Gas generating switching tube |
| US3303376A (en) * | 1965-11-30 | 1967-02-07 | Gen Electric | Triggered vacuum gap device employing gas evolving electrodes |
-
1966
- 1966-09-21 US US580998A patent/US3465192A/en not_active Expired - Lifetime
-
1967
- 1967-06-06 GB GB26149/67A patent/GB1190957A/en not_active Expired
- 1967-08-30 SE SE12032/67A patent/SE324187B/xx unknown
- 1967-09-20 DE DE19671640255 patent/DE1640255A1/en active Pending
- 1967-09-21 JP JP6083267A patent/JPS485545B1/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5994850A (en) * | 1995-09-08 | 1999-11-30 | Eev Limited | Switching arrangements wherein a cylindrical trigger electrode is arranged around a gap between an anode and cathode for establishing a discharge therebetween |
Also Published As
| Publication number | Publication date |
|---|---|
| US3465192A (en) | 1969-09-02 |
| DE1640255A1 (en) | 1970-08-13 |
| JPS485545B1 (en) | 1973-02-17 |
| SE324187B (en) | 1970-05-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |