POWER SUPPLY SOURCE FOR ARC WELDING Russian patent published in 1996 - IPC

FIELD: welding. SUBSTANCE: invention refers specifically to A. C. electric welding gears. power supply source for arc welding includes transformer which primary winding is connected through thyristors in parallel opposition to terminals of single-phase A.C. network, which secondary winding and circuit of capacitor and inductance coil are connected in series. Source is supplemented with additional winding connected in series magnetically coupled to inductance coil. Capacitor and inductance coil are connected in parallel to thyristors. Total mass of welding gear assembled in agreement with this circuit is 17.0 kg with welding current of 130 A. EFFECT: simplified design, enhanced operational stability and reliability. 3 dwg