GB558814A - Improvements in and relating to control systems for electric welding and other circuits - Google Patents
Improvements in and relating to control systems for electric welding and other circuitsInfo
- Publication number
- GB558814A GB558814A GB8353/42A GB835342A GB558814A GB 558814 A GB558814 A GB 558814A GB 8353/42 A GB8353/42 A GB 8353/42A GB 835342 A GB835342 A GB 835342A GB 558814 A GB558814 A GB 558814A
- Authority
- GB
- United Kingdom
- Prior art keywords
- current
- inductance
- circuit
- voltage
- june
- 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
- B23K11/26—Storage discharge welding
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding Control (AREA)
- Generation Of Surge Voltage And Current (AREA)
Abstract
558,814. Control systems for resistance welding &c. BRITISH THOMSON-HOUSTON CO., Ltd. June 18, 1942, No. 8353. Convention date, June 19, 1941. [Class 38 (iv)] Thermionic control.-An impulse of current is obtained from an inductance, such as the primary winding of a transformer feeding a welding circuit, by interrupting unidirectional current flowing in the inductance when the current in an A.C. supply circuit furnishing it has reached a predetermined value. A valve 34 is maintained non- conductive by a grid bias voltage derived from a potentiometer 42 in shunt with a voltage stabilizing glow discharge tube 40 supplied from a D.C. source comprising a condenser 30. When a switch 51 is opened a coil 32, energized across a resistance 39 in series with the tube 40, is deenergized and a relay 19 operates to connect the inductance 17 to a polyphase rectifier circuit 3. As the current rises in the inductance a current transformer 45 superposes an alternating voltage on the grid of valve 34 which, accordingly, becomes conducting at a current value predetermined by the potentiometer tap and energizes the coil 32 to cause the relay 19 to interrupt the current through the inductance. The rectifiers may have immersion-ignitor control members and the voltage of the D.C. furnished may be determined by controlling or adjusting the timing of the impulses supplied by the exciting circuit 15 to these members.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US558814XA | 1941-06-19 | 1941-06-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB558814A true GB558814A (en) | 1944-01-24 |
Family
ID=22000781
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8353/42A Expired GB558814A (en) | 1941-06-19 | 1942-06-18 | Improvements in and relating to control systems for electric welding and other circuits |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB558814A (en) |
-
1942
- 1942-06-18 GB GB8353/42A patent/GB558814A/en not_active Expired
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