UA40947A - Device for arc welding - Google Patents

Abstract

A device for arc welding contains an input rectifier with inputs for connection to a supply system, filters-capacitors, keys, an arc welding transformer, capacitors, an output rectifier, a choke, terminals. The primary winding of arc welding transformer by one end is connected with a common point of capacitors, been connected in series between them and connected with one side through the key to the common point of filter-capacitor. From other side the capacitors are connected through another key to the common point of another output of input rectifier and another filter-capacitor. Other side of the primary winding of arc welding transformer is connected to the common point of filters-capacitors connected together for connection of this point to the neutral conductor of the supply system. The secondary winding of arc welding transformer is connected in parallel through the input rectifier, capacitor and in series through the choke to the terminal for connection with the arc space.