POWER SOURCE FOR MANUAL ARC WELDING Russian patent published in 2001 - IPC

FIELD: electrical engineering, namely, processes of electric arc welding by means of piece electrodes in conditions of small workshops and in home. SUBSTANCE: power source for manual electric arc welding includes bridge-type rectifier, power step-down transformer, smoothing choke and two sets of capacitors whose second terminals are connected with the same terminal of secondary winding of transformer. Smoothing choke with split windings is connected between branches of diode bridge. It provides reduced voltage of idle mode and enhanced operational mode of electrolytic capacitors. EFFECT: possibility for reducing output voltage of power source in idle mode until safety value, enhanced reliability due to lowered alternating current component of electric current for recharging electrolytic capacitors, light weight and reduced size of source that may operate without high power mains. 1 dwg