UA42469A - Device for arc welding - Google Patents

Abstract

A device for arc welding contains input diode for connection to the power system, filters-capacitors, keys, an arc welding transformer, a capacitor, an output rectifier, a choke, terminals. The primary winding of arc welding transformer by one end is connected through the capacitor to the common point of keys in-series connected between them and connected in parallel to filters-capacitors also in-series connected between them and connected by common point formed with one of the keys, to the anode of input diode. Another common point is formed by another key and another filter-capacitor, for connection to the neutral conductor of the power system. The primary winding of arc welding transformer is connected by another end with the midpoint of filters-capacitors. The secondary winding of arc welding transformer is connected in parallel through the output rectifier and in-series through the choke to the terminals for connection with the arc space.