GB420872A - Improvements in or relating to vapour or gaseous electric discharge devices - Google Patents
Improvements in or relating to vapour or gaseous electric discharge devicesInfo
- Publication number
- GB420872A GB420872A GB14247/34A GB1424734A GB420872A GB 420872 A GB420872 A GB 420872A GB 14247/34 A GB14247/34 A GB 14247/34A GB 1424734 A GB1424734 A GB 1424734A GB 420872 A GB420872 A GB 420872A
- Authority
- GB
- United Kingdom
- Prior art keywords
- anode
- shield
- condenser
- tubes
- vapour
- 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
- H01J13/00—Discharge tubes with liquid-pool cathodes, e.g. metal-vapour rectifying tubes
- H01J13/02—Details
- H01J13/34—Igniting arrangements
-
- 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
- H01J13/48—Circuit arrangements not adapted to a particular application of the tube and not otherwise provided for
-
- 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
- H01J2893/0073—Discharge tubes with liquid poolcathodes; constructional details
- H01J2893/0074—Cathodic cups; Screens; Reflectors; Filters; Windows; Protection against mercury deposition; Returning condensed electrode material to the cathodic cup; Liquid electrode level control
- H01J2893/0087—Igniting means; Cathode spot maintaining or extinguishing means
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
420,872. Converting. WESTINGHOUSE ELECTRIC & MANUFACTURING CO., East Pittsburg, U.S.A.-(Assignees of Ludwig, L. R. ; 738, Princeton Boulevard, Wilkinsburg, Pennsylvania, U.S.A.) May 11, 1934, No. 14247. Convention date, May 27, 1933. [Class 38 (ii)] [See also Group XL] The exciting anode 4 of a mercury vapour discharge tube is surrounded by a shield 7 which extends close to the cathode 3 ; the shield is insulated from the anode 4 by spacing or a quartz inset, and its potential is controlled by a switch 11. The main discharge to the anode 2 cannot be instigated even if this anode is at a positive potential, until the shield is made positive. As shown in Fig. 1 the main discharge is interrupted by means of a circuit including a condenser 13, battery 16 and switch 15 ; a spark-gap 14 is placed across the condenser 13. For use in converting continuous to alternating current, two discharge tubes 1, 1<1>, Fig. 2. are connected to the ends of an inductance 24 in the alternating circuit, the mid-point 23 being connected to the generator 21. A condenser 27 connected between resistances 26, 26<1> in circuits to the shields 7 controls the potentials of these shields and the working of the tubes. Instead of mercury cathode and vapour filling, thermionic cathodes and gaseous filling may be used. The shield need not completely surround the anode 4. A number of anodes in one tube can be controlled by a single shield 7. In an inverter system using two tubes the arc in one can act as the extinguishing means for the arc in the other.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US420872XA | 1933-05-27 | 1933-05-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB420872A true GB420872A (en) | 1934-12-10 |
Family
ID=21919959
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB14247/34A Expired GB420872A (en) | 1933-05-27 | 1934-05-11 | Improvements in or relating to vapour or gaseous electric discharge devices |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB420872A (en) |
-
1934
- 1934-05-11 GB GB14247/34A patent/GB420872A/en not_active Expired
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