GB542393A - Improvements in electric discharge apparatus - Google Patents
Improvements in electric discharge apparatusInfo
- Publication number
- GB542393A GB542393A GB12294/40A GB1229440A GB542393A GB 542393 A GB542393 A GB 542393A GB 12294/40 A GB12294/40 A GB 12294/40A GB 1229440 A GB1229440 A GB 1229440A GB 542393 A GB542393 A GB 542393A
- Authority
- GB
- United Kingdom
- Prior art keywords
- grid
- cathode
- discharge
- anode
- envelope
- 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
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/505—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
- H02M7/51—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using discharge tubes only
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J13/00—Discharge tubes with liquid-pool cathodes, e.g. metal-vapour rectifying tubes
- H01J13/02—Details
- H01J13/04—Main electrodes; Auxiliary anodes
- H01J13/16—Anodes; Auxiliary anodes for maintaining the discharge
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J17/00—Gas-filled discharge tubes with solid cathode
- H01J17/38—Cold-cathode tubes
- H01J17/40—Cold-cathode tubes with one cathode and one anode, e.g. glow tubes, tuning-indicator glow tubes, voltage-stabiliser tubes, voltage-indicator tubes
- H01J17/44—Cold-cathode tubes with one cathode and one anode, e.g. glow tubes, tuning-indicator glow tubes, voltage-stabiliser tubes, voltage-indicator tubes having one or more control electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0072—Disassembly or repair of discharge tubes
- H01J2893/0088—Tubes with at least a solid principal cathode and solid anodes
- H01J2893/0094—Electrode arrangements; Auxiliary electrodes
Abstract
542,393. Converting. BRITISH THOMSONHOUSTON CO., Ltd. July 29, 1940, No. 12294. Convention date, July 29, 1939. [Class 38 (ii)] [Also in Group XL] In high voltage gas or vapour filled arc discharge apparatus, in which the discharge is controlled by a grid 37, premature break-down between the control grid and the anode 19 is prevented by sub-dividing the voltage drop between them by an intermediate grid electrode 36 to which is imparted a fixed potential relationship to the anode and cathode, as by connecting it through a resistance 58 to the mid point of a potential divider 59 across the supply lines 48, 49. The functioning of the grid 36 is enhanced by the provision of a third grid 35 and means, such as the transformer 62, whereby the grid 35 is made negative relatively to the grid 36 when the control grid becomes negative with respect to the cathode. The functioning of the control grid is facilitated by an associated grid 38, energized from the same transformer 51, the resistances 54, 55 being such that the current flow in the discharge space tends to maintain the grid 37 negative with respect to the grid 38. The discharge device may have a solid cathode, or, as shown a mercury pool cathode 23 serving also as the source of ionizable vapour. A fixed gas, such as argon, may be used as an auxiliary ionizing medium. The cathode is carried in a metal container 12 insulated from the main body of the envelope 10 by an insulator 13, which is protected from the deposit of condensed mercury, by a drip baffle 25. The cathode lead is a heavy stud 27, the ignition electrode 28 is of the immersion type, and an auxiliary anode 31 has a lead 32 protected from the discharge by an insulating sleeve 33. The envelope 10 is surrounded by a cooling coil 16 and has an exhaust duct 17 for connection to an evacuating system. The anode 19 is substantially enclosed by the grids 35, 36, and the leads consist of concentric tubes 20, 40, 41, and metal lead-in rings 42, 43 having glass-tometal seals with the envelope. The seals are protected from the discharge by shields 44. Specification 488,209, [Group XL], is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US287341A US2209819A (en) | 1939-07-29 | 1939-07-29 | Electric discharge apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB542393A true GB542393A (en) | 1942-01-07 |
Family
ID=23102478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12294/40A Expired GB542393A (en) | 1939-07-29 | 1940-07-29 | Improvements in electric discharge apparatus |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2209819A (en) |
| GB (1) | GB542393A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3437863A (en) * | 1965-07-29 | 1969-04-08 | Filipp Ivanovich Butaev | High-voltage mercury-arc rectifier |
| CN102109590B (en) * | 2011-01-19 | 2013-05-22 | 四川电力科学研究院 | Solid foaming insulation direct-current standard voltage divider for extra-high voltage field |
| CN111764063A (en) * | 2020-06-30 | 2020-10-13 | 高邮萤火贸易有限公司 | Industrial sewing machine with prevent static workstation |
-
1939
- 1939-07-29 US US287341A patent/US2209819A/en not_active Expired - Lifetime
-
1940
- 1940-07-29 GB GB12294/40A patent/GB542393A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2209819A (en) | 1940-07-30 |
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