GB470481A - Improvements in and relating to control devices for electric circuits - Google Patents
Improvements in and relating to control devices for electric circuitsInfo
- Publication number
- GB470481A GB470481A GB30816/35A GB3081635A GB470481A GB 470481 A GB470481 A GB 470481A GB 30816/35 A GB30816/35 A GB 30816/35A GB 3081635 A GB3081635 A GB 3081635A GB 470481 A GB470481 A GB 470481A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ignition
- nov
- cycle
- welding
- relating
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/24—Electric supply or control circuits therefor
- B23K11/248—Electric supplies using discharge tubes
-
- 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
- H01J13/36—Igniting arrangements having resistive or capacitative igniter
- H01J13/38—Igniting arrangements having resistive or capacitative igniter having resistive igniter only
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding Control (AREA)
Abstract
470,481. Control systems for welding- arcs. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 7, 1935, No. 30816. Void. Convention date, Nov. 7, 1934. [Class 38 (iv)] In supplying a load such as a welding circuit 14 with controlled A.C. through oppositely connected gaseous discharge devices 6, 7, the latter. are rendered conductive either by applying a starting potential to an auxiliary electrode each conducting half-cycle, or by exciting a " spring ignition anode " so as to form a cathodic spot at the commencement of the conducting period. In the former case ignition impulses are supplied by transformers 4, 5, excited by a common transformer 3, the primary circuit of which is completed for predetermined periods by a variable speed motor-driven rotary switch 9, 10. Variation of the moment of ignition during each cycle may be effected by phase-shifting condensers 15, 16.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE470481X | 1934-11-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB470481A true GB470481A (en) | 1937-08-13 |
Family
ID=6541130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30816/35A Expired GB470481A (en) | 1934-11-07 | 1935-11-07 | Improvements in and relating to control devices for electric circuits |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB470481A (en) |
-
1935
- 1935-11-07 GB GB30816/35A patent/GB470481A/en not_active Expired
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