Usually the Hi-power arc welding inverter's single-ended pulse transformers require the transformer cores with low high frcqucncy loss, high Bs and low Br so that to achicvc bigger A B. Output filter and energy stored inductancc required the characteristics of high Bs, low loss and constant permeability, in this case, we made horizontal magnetic treatment on Nano-crystalline alloy to manufacture the transformer cores with low Br and constant permeability.
