POWER SUPPLY SOURCE FOR MECHANIZED WELDING Russian patent published in 2007 - IPC B23K9/00 H01F29/08 

FIELD: units of electric equipment, namely transformers and rectifiers for power supplying to welding electric arc at mechanized and automatic gas-shield welding and at automatic welding under flux layer.

SUBSTANCE: power source includes power transformer with constant outer characteristics and saturation choke whose windings are connected in series with windings of power transformer. A part of magnetic circuit of saturation choke is made with possibility of motion relative to its remaining stationary part without cutting off magnetic circuit of choke and without forming air gap. Mutual displacement of parts of magnetic circuit changes working cross section of magnetic circuit and therefore saturation phase of magnetic circuit.

EFFECT: simple and reliable process for regulating outlet voltage of power source.

2 dwg